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ISSN (Print): 1381-6128
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Thank you for the high quality of your services and it was such a pleasure and learning experience working with you.
(School of Basic Medical Science, Beijing University of Chinese Medicine, Beijing 100029, China)
5 Abstract Ahead of Print are available electronically
50 Articles Ahead of Print are available electronically
Both central and peripheral immune tolerance mechanisms are crucial in maintaining the non-self-reactivity of T and B-cells and in
eliminating self-reactive T and B-cells, respectively. Failure of such immune tolerance mechanisms results in autoimmunity leading to the
development of autoimmune diseases (ADs). ADs are a heterogeneous set of chronic diseases with shared aetiology in which the immune
system may mistakenly attack an individual’s own organ or affect the whole body. The increasing incidence and prevalence make ADs as one
of the leading causes of disability and mortality worldwide. To date, there are more than 100 ADs collectively reported, affecting almost 4.5%
individuals globally [1, 2].
Genetic and environmental factors are believed to play important roles in the development of Ads [3, 4]. Shared immunogenic pathogenesis
are frequently observed making the differentiation of two unlike ADs a challenge. Different cytokines, pro-inflammatory cytokines,
chemokines, enzymes, eicosanoids, immune cells and inflammatory mediators take part in the inflammatory pathogenesis of ADs, ultimately
leading to devastating and life-threatening clinical manifestations [5, 6].
The main therapeutic goals in treating ADs are to maintain autoimmunity-derived different clinical manifestations and to sustain immunological
homeostasis. Using the current knowledge of immune-mediated pathogenesis of ADs, several novel strategies for the therapeutic
intervention of the said disease have been conducted. Administration of immunosuppressive drugs is one of such strategies. Specific-targeted
treatments involving administration of inflammatory mediator-specific monoclonal antibodies have also been tested and found to be potentially
promising in both preclinical and clinical applications. Recently, researches on immunosuppressive or regulatory immune cell-based
therapy and exploration of new biomarkers including autoantibodies in ADs have gained much attention [7-9].
In this special issue of Current Pharmaceutical Design (CPD), Giemza-Stokłosa et al.  represented an update on the role of ferritin in
inflammatory and autoimmune diseases including adult onset Still’s diseases, macrophage activation syndrome, catastrophic antiphospholipid
syndrome and sepsis with an emphasis to hyperferritinaemic syndrome. Cavestro et al.  provided an insightful review focusing on pathogenesis
of migraine from the origin of the neuro-inflammatory theory, to the modern pathophysiological model and the latest therapies. In an
interesting review, Khan et al.  summarized the role of chemokines and their receptors in pathogenesis of rheumatoid arthritis (RA) and
also indicated the possible interactions of chemokines or receptors with various synthetic and natural compounds that might be used as potential
therapeutic targets in treatment of RA. Kechida  critically reviewed the common factors in the pathogenesis of autoimmune diseases
aiming towards developing better treatment strategies.
To sum up, we would like to complete this editorial by thanking Dr. William A. Banks, the Editor-in-Chief, as well as Mr. Kazim Baig,
the director of CPD, along with all the contributing authors who have enthusiastically responded to our request by contributing to this special
issue of CPD. In addition, we would like to thank all the reviewers who evaluated the submitted manuscripts for this special issue and provided
their evaluation based on novelty and scientific contribution in the fields of autoimmunity.
Therapeutic Potentials of Adenosine Receptors: The State of The Art
The endogenous purine nucleoside adenosine is ubiquitously present throughout the body; where it is implicated in mediating various
physiological functions by interactions with four G-protein coupled receptors (GPCRs) denoted as A1, A2A, A2B and A3 adenosine receptors
(ARs) [1-3]. Biological actions of A1 and A3 ARs are mainly mediated by the inhibition of adenylyl cyclase (AC) activity followed by reduction
of cyclic AMP (cAMP). In contrast, A2A and A2B ARs mediated physiological actions are linked to the activation of AC activity and a
consequent increase of cAMP [4-6].
Agonists of A1 AR have been found to be useful as neuro- and cardio-protective agents for the treatment of cardiac arrhythmias, type-2
diabetes (T2D), and glaucoma, pain, epilepsy, Huntington’s disease, and acute renal injury, whereas A1 AR antagonists are envisioned to be
beneficial for the treatment of asthma, chronic obstructive pulmonary disease (COPD), acute heart failure and as diuretics [7-11]. However,
off-target tissue activation, tachyphylaxis and cardiovascular side effects related to the chronic use of A1 AR agonists paved the way to the
design and discovery of various potential partial agonists and allosteric modulators of A1 AR to overcome the unintentional side effects .
Partial agonists like capadenoson, neladenoson, and its prodrug neladenoson bialanate (BAY 1067197) are under various stages of clinical
trial investigations for the treatment of various diseases like T2D, and heart failure ; whereas allosteric modulators like T-62 has been
investigated as a potential anti-nociceptive agent . It is interesting to note that both agonists and antagonist have been found to be useful
for the treatment of cancer based on the type of tumor and metastasis .
In recent years, much effort have been paid towards developing novel non-dopaminergic therapeutic approaches to cure neurodegenerative
movement disorders such as Parkinson’s disease (PD) and Huntington’s disease to overcome the adverse reactions associated with the
classical dopaminergic drugs. Among various non-dopaminergic strategies, the selective antagonism of A2A AR is found to be highly beneficial
for not only enhancing dopamine D2 receptor-dependent signalling and improving motor disabilities but also reducing dyskinesia from
long-term use of neuroleptic and dopaminergic drugs [15, 16].
The A2B AR antagonists on the other hand are being investigated for the treatment of T2D, asthma and gastrointestinal disorders [17-19].
Similarly, agonists selective for A3 AR are currently under investigation for the treatment of autoimmune inflammatory disorders (rheumatoid
arthritis, psoriasis), liver cancer, dry eye disease including cardioprotection, whereas A3 AR antagonists are being developed for the treatment
of asthma, inflammatory bowel disease, glaucoma as well as cerebroprotective agent [20, 21].
It is worth mentioning that in past two decades, numerous innovative ligand-based and structure-based computer aided drug design
(CADD) strategies have been employed in the pursuit of discovery and design of high affinity AR-specific ligands [22-30]. In this regard, the
discovery of 3D X-ray crystal structures of A2A AR followed by A1 AR has not only enhanced researchers’ understanding about these receptors
but also greatly facilitated structure-based CADD approaches towards the discovery of various novel potential ligands [31-33].
This thematic issue highlights the various aspects of recent advances made in the area of design, discovery and development of agonists,
partial agonists, antagonists and allosteric modulators of all the four subtypes of adenosine receptors (A1, A2A, A2B and A3 ARs) as potential
therapeutic agents. In particular, the medicinal chemistry and therapeutic potential of agonists/partial agonists, antagonists and allosteric
modulators of A1 AR have been thoroughly discussed with special emphasis on their current status and future perspectives in clinical settings
. Omar et al., discussed the recent developments of various ligands targeting A2A AR, including their structure-activity relationship (SAR)
and therapeutic potentials. Also, molecular modeling approaches utilized in the design of A2AAR ligands have been highlighted with various
recent examples . Balakumar et al. (2019), elaborated the recent advancement made in the development of agonists and antagonists of
A2B AR with particular emphasis on the therapeutic potentials of selective A2B AR ligands in the management of airway inflammatory conditions
and cancer . Finally, Raghuprasad et al. (2019), discussed the progress in the pursuit of discovery and development of novel potential
ligands belonging to diverse chemical classes selectively targeting A3 AR as a potential drug target for the treatment of various pathological
conditions such as cardiovascular disorders, inflammation, cancer and pain . Recent updates given in this thematic issue might augment
the understanding of the researchers from academia and industries for the design and development of high affinity ligands specifically
targeting ARs as novel potential therapeutic agents.
In the continuation of our previous issue emerging trends on Nanoparticles and Nano-materials in biomedical applications -I , this
mini-thematic issue consists of six different review articles from the young and expert’s researchers in the field across the world. These articles
highlights the advantages, limitations and prospects related to drug delivery system, importance of actino-bacteria in the nanoparticles
fabrication, multimodal imaging, and biomedical applications of silver nanoparticles (AgNPs) and application of nanoparticles enzyme immobilization.
At first review, Saravaranakumar et al.,  depicted that emerging strategies in tailored ligand functionalized stimuli-responsive nanocarriers
as the drug delivery system DDS for cancer therapies. As the conventional DDS has the several limitations such as leakage of the drug
and toxicity to normal cells, loss of drug efficiency, while the smart stimuli responsive DDS is non-toxic to cells, prevent the leakage and
degradation of drug because of its targeted drug delivery in pathological site. Thus, nanomaterial chemistry enabled to the development of
smart stimuli responsive DDS over the conventional DDS. Stimuli responsive DDS are ensured the spatial or temporal, on demand drug delivery
in targeted cancer cells. These are engineered using the organic (synthetic polymers, liposomes, peptides, aptamer, micelles, dendrimers)
and inorganic (zinc oxide, gold, magnetic, quantum dots, metal oxides) material. Principally, these nanocarriers are releasing the drug at
targeted cells in response to external and internal stimuli’s (temperature, light, ultrasound and magnetic field, pH value, redox potential (glutathione),
enzyme). The most recent findings are indicated that multi-stimuli responsive DDS is better than the single stimuli responsive DDS,
which extensively increasing the drug release and accumulation in the targeted cancer cells resulting the better tumor cell ablation. These
investigations are demonstrating that the multi-stimuli responsive DDS is more promising in cancer therapy. In addition, a handful of multistimuli
responsive DDS are in clinical trial for further approval. However, the comprehensive review is addressing the existing knowledge
about multi-stimuli responsive DDS.
Sivasankar et al.,  described that comprehensive review, which will spotlight the potential of actinobacteria-mediated nanoparticles in
the field of Nanomedicine. Nanoparticles have gained significant consideration in the past two decades, due to their multifaceted applications
in the field of nanomedicine. As our ecosystem and habitats changed due to the global warming, many new diseases are emerging. Treating
those costs a lot and mostly ended up in failure. In addition, the frequent use of antibiotics to control the emerging diseases led the pathogens
develop resistance to the antibiotics. Hence, the nanoparticles are targeted to treat such diseases instead of the costly antibiotics, where the
make resistant strains. In particular, the biosynthesized nanoparticles have considerable attention due to their simple, eco-friendly, and promising
activity. To highlight, microbial mediated nanoparticles were found to possess higher antimicrobial activity and thus have promising
role in the antimicrobial therapy to fight against the emerging drug resistant pathogens. In this context, this review article was aimed to provide
the role of nanoparticles in the field of nanomedicine and importance of actinobacteria in the nanoparticle fabrication and their need in
Pan et al.,  comprehensively illustrated the application of different form nanoparticles in various medical imaging techniques. Multimodal
imaging plays an important role in the diagnosis of brain disorders. Neurological disorders need to be diagnosed at an early stage for
their effective treatment as later, it is very difficult to treat them. If possible, diagnosing at an early stage can be much helpful in curing the
disease with less harm to the body. There is a need for advanced and multimodal imaging techniques for the same. This paper provides an
overview of conventional as well as modern imaging techniques for brain diseases, specifically for tumor imaging. In this paper, different
imaging modalities are discussed for tumor detection in the brain along with their advantages and disadvantages. Conjugation of two and
more than two modalities provides information that is more accurate rather than a single modality. They can monitor and differentiate the
cellular processes of normal and diseased condition with more clarity. The advent of molecular imaging, including reporter gene imaging, has
opened the door of more advanced noninvasive detection of brain tumors. Due to specific optical properties, semiconducting polymer-based
nanoparticles also play a pivotal role in imaging tumors. The objective of this paper is to review nanoparticles mediated brain imaging and
disease prognosis by conventional as well as modern modal imaging techniques.
Shanmuganathan et al.,  depicted that emphasizes the synthesis methods, modes of action under dissipative conditions and the various
biomedical applications of AgNPs. Generally, silver is considered as a noble metal used for treating burn wound infections, open wounds and
cuts. However, the emerging nanotechnology has made a remarkable impact by converting metallic silver into AgNPs for better applications.
The advancement in technology has improved the synthesis of nanoparticles using a biological method instead of physical and chemical
methods. Nonetheless, synthesizing AgNPs using biological sources is eco-friendly and cost effective. Until date, AgNPs are widely used as
antibacterial agents; therefore, a novel idea is needed for the successful use of AgNPs as therapeutic agents to uncertain diseases and infections.
In biomedicine, AgNPs possess significant advantages due to their physical and chemical versatility. Indeed, the toxicity concerns regarding
AgNPs have created the need for non-toxic and ecofriendly approaches to produce AgNPs. The applications of AgNPs in nanogels,
nanosolutions, silver-based dressings and coating over medical devices are under progress. Still, an improvised version of AgNPs for extended
applications in an eco-friendly manner is the need of the hour.
Bhavaniramya et al.,  comprehensively reviewed different form of nanoparticles on enzyme immobilization. Enzymes possess a great
potential on catalytic activity of several physiological process. Utilization of immobilized enzymes has great attention in several food industries
due to their excellent functional properties, simple processing and cost effectiveness during past decades. Though it possesses several
applications, still have some challenges. To overcome the challenges, nanoparticles with their unique physicochemical properties act as very
attractive carriers for enzyme immobilization. Enzyme immobilization method is not only widely used in food industry and a component
methodology in pharmaceutical industry. Compared to free enzymes immobilized form shows more robust and more resistant to environmental
changes. In this method, the mobility of enzymes is artificially restricted to change their structure and properties. Due to the sensitive
nature, the classical immobilization methods are still limited because of reduction of enzyme activity. In order to improve the enzyme activity
and their properties, nanomaterials are used as carrier for enzyme immobilization. Recently, much attention has been directed towards the
research on potentiality of the immobilized enzymes in the food industry. Hence, the present review, emphasizeon the different types of immobilization
methods, which are presently used in food industry and other applications. Various types of nanomaterials such as nanofibers, nanoflowers and magnetic nanoparticles are significantly used as a support material in the immobilization methods. However, several numbers
of immobilized enzymes are used in food industries to improve the processing methods, which not only reduces the production cost but
also the effluents from the industry.
Finally, Baskaran et al.,  briefly described about antioxidant, antidiabetic, anti-inflammatory and anticancer properties of biocompatible
nanoparticles. Nano-pharmaceuticals have rapidly emerged to cure several diseases. There are numerous reports describing the development
and application of nano-pharmaceuticals. Here, we discuss nanoparticles synthesis and the mechanisms to scavenge free radicals. We
also discuss their major properties and list several commercially available nano-medicines. Reactive oxygen and hydrogen species are formed
during normal metabolism, and excessive reactive species can damage proteins, lipids and DNA and cause disease. Plant and microbe-based
nanoparticles, which can protect tissues from free radical damage, have recently gained research momentum because they are inexpensive and
We hope multidisciplinary topics on nanomaterials discussed with the theme issue will promote further discussion among researchers in
nano-therapeutics and drug delivery. As the guest editors, we would like to thank all the authors and co-authors for their excellent contributions.
Besides, we would like to thank a group of scientific experts in computation and cancer drug delivery who offered their strong comments
and suggestions to improve the quality of this special issue. Finally, we would like to express our sincere appreciation to the Director
Kazim Baig, Editorial Assistant Aamer M. Khan, copy-editors and all the editorial staffs in Current Pharmaceutical Design, Bentham Science
Publishers for the excellent opportunity, experience while working with this thematic issue.
Diabetes is known as the major worldwide problem currently. Insulin deficiency, insulin resistance, obesity etc. are major pathologies
contributing factors. Diabetes causing a high rate of mortality and morbidity worldwide and currently affected more than 1/4 world’s adult
population. Diabetes also associated with several diabetic complications which are difficult to treat. Treatment of diabetes includes lifestyle
alterations, insulin therapy and oral hypoglycemic agents besides that now needed to develop new medications or formulations to combat the
toxicities associated with the existing drugs. In current thematic issue entitled as “Current pharmaceutical interventions and drug design in the
management of diabetes and diabetic complications”, we have been enclosed valued articles which discuss the inventions and exploration
carried out on the management of diabetes and its complications.
Six exhaustive reviews were included from the expert in the field of drug design, formulations and pharmacology covering the recent
updates on the drug development, formulation and pharmacological interventions in the treatment of diabetes.
Dua K. and colleagues  have been focused their discussion on alpha-glucosidase and its inhibitor in the management of diabetes. They
described the role of this pancreatic enzyme which involves in the anabolism of carbohydrate and converting into glucose along with its inhibitors
interestingly helps to prevent postprandial hyperglycemia, particularly in type 2 diabetes.
Sivakumar & Prabhakar  have been describing the protein tyrosine phosphatase-1B (PTP1B) and its inhibitors which govern the insulin
signaling pathways. PTP1B supposed to works by dephosphorylating the tyrosine of insulin receptor and suppress the insulin signaling cascade
and currently emerging therapeutic strategy for the diabetes management.
Peroxisome proliferator-activated receptors (PPARs) involved in lipid and glucose metabolism and thus its agonists have a significant
role in the management of diabetes as extensively described by Ahsan W. , A critical analysis on recently reported thiazolidinone derivatives
as PPAR- γ agonist has been also elaborated.
Taliyan R. & co-workers  exhaustively covered the fibroblast growth factor 21 (FGF21) which found to be efficacious in the treatment
of diabetes mellitus and obesity. It is a circulating endocrine hormone shows its effect after binding with FGFR1 and co-receptor. Its role as a
neuroprotectant and potential metabolic regulator has been a major focus of their review.
An important contribution by Giri N. and co-workers  includes the dendrimer as nanocarrier containing hypoglycaemic drugs. They
described how these provide improved diabetes management with minimum risk of associated side effects due to better drug delivery via
nanosized structures like dendrimers.
Another important inclusion in this issue is from Kumar A. and co-workers  who described the ATP dependent and independent proteases
involved in the regulation of mitochondrial function which is found to be important in the management of diabetes and diabetic complications.
They emphasize on anterograde pathways as well as on retrograde pathways helpful in mitochondrial function via ATP dependent
and independent proteases which are the keys for balancing anterograde to retrograde signalling.
We had a great pleasure to work with the Director Kazim Baig and his team specially Editorial Assistant Aamer M. Khan. We express our
sincere gratitude for them for providing us the opportunity to work as the Guest Editors in the journal Current Pharmaceutical Design. We
wish that this thematic issue will be fruitful for the enormous readership and may assist the researcher as a good information source in the
field of diabetes, and its management.
Dietary antioxidants have been the focus of major attention over the last decades due to their potential effects on human health. Several
vitamins and phenolic compounds have been considered responsible for the benefits of plant-based dietary patterns and plant-derived beverages
[1, 2]. Due to the impact on general population, it is imperative to define the mechanisms underlying these effects, providing a strong
rationale and biological plausibility to the observational evidence from epidemiological studies.
There are a variety of pathways through which antioxidants may act at cellular level depending on their chemical structure. Counteracting
oxidative stress and inflammation represent the main targets of antioxidants activity and it is undoubtedly the most studied by far . However,
potentially beneficial effects have been hypothesized in a multitude of conditions, including cardiovascular disease, cancer, and neurodegenerative
disorders, thus suggesting that specific pathways depending on the organ systems may exist [4-7]. Moreover, the impact of
certain antioxidants (i.e., polyphenols) on the microbiome as well as the effect of the microbiome on the (bacterial) metabolites of polyphenols
and their importance for the bioactivity of many phytochemicals may deserve certain attention . Among others, vitamin D has been
demonstrated to exert immunomodulatory effects leading to potentially metabolic benefits and cancer prevention .
In this special issue, we invited researchers to contribute with breaking through reviews on the most innovative discoveries regarding
dietary antioxidants, including epidemiological evidence and mechanisms of action for individual outcomes. Specifically, Valer-Martinez
et al.  and Giampaolino et al.  investigated the potential effects of vitamin D toward metabolic disorders, including gynecological
complications, such as endometriosis. Among other potential benefits of antioxidants and antioxidant-rich foods, Dominguez et al.  reviewed
the existing evidence on their potential association with cognitive decline, Machado et al. with coronary heart disease , Yamagata
with vascular and endothelial health , Chisari et al. with bone health . Finally, the studies of Cianci et al. and Reyes-Muñoz et al.
provided a summary of dietary intervention and treatment approaches for specific clinical conditions, such as gestational diabetes  and
sarcopenia in cervical cancer patients , respectively.
Many types of pathologies and disorders affect skin, spanning from dehydration, inflammation or itching to tumors, such as melanoma.
The importance of skin as a barrier for body protection is well known, as well as the limits associated to the local administration of synthetic
drugs, often resulting in poor efficacy or toxicity problems. In recent years research efforts have been devoted to the development of therapeutic
strategies aimed at treating skin by “green” approaches. Particularly several studies have focused on the possibility of treating the skin
by administering specialized delivery systems loaded with phytoconstituents and made of biodegradable excipients. In the second part of the
present issue, Puglia and colleagues have summarized the innovative strategies for the delivery of skin cosmetics and cosmeceutics , particularly
the authors focused on the novel association between nanoparticles and phytocompounds, demonstrating its suitability for the treatment
of skin disorders. Concerning the possibility to treat skin pathologies by innovative drug delivery systems, Esposito and colleagues have
reported researches on nanotechnological approaches based on the use of lipid nanoparticles for the delivery of plant-derived molecules,
spanning from solid lipid nanoparticles to monoolein aqueous dispersions . Moreover, the Touitou group has reported the use of ethosomes
for dermal administration of natural active molecules. Interestingly, ethosome enables to treat many skin disorders, such as skin bacterial and
fungal infections, skin inflammation, acne vulgaris, arthritis, and skin cancer, assuring good safety profile and lack of toxicity or irritation .
At last in this issue two contributes have been reported about the physical-chemical characterization of topical vehicles. Indeed, this kind of
studies exerts a crucial role in the design of pharmaceutical and cosmetic formulations suitable for cutaneous administration. For instance, the
skin permeation of the active molecules, as well as the vehicle stability, can be strongly influenced by viscosity and inner structure of the
formulations. At this regard, the review by Huang has provided a practical understanding of key rheological concepts and parameters ,
while Carducci and colleagues have highlighted the importance of the structural characterization of nano-formulations by X-ray scattering
I would like to thank all the authors for their excellent contributions and the Current Pharmaceutical Design publishing team for their
The skin is the largest organ in the body and provides a barrier protecting the body from both physical and environmental threats. However,
the skin is involved in many disorders and pathological conditions [1, 2]. Synthetic drugs to treat skin pathologies always imply multidrug
resistance, with a consequent relatively low success rate. In this view it is particularly important the possibility to find safe and effective
compounds and formulations . Nature offers a tremendous potential in medicine, nutraceutical as well as cosmetic field. In the last few
years researchers have been focusing on the health benefits of natural products, for instance algae, spice and citrus fruits. Innovative pharmaceutical
forms and strategies can solubilize and deliver bioactive compounds from natural sources, protecting them for degradation and
controlling their delivery onto the skin [4, 5]. This issue relies on new challenges to treat skin, based on the use of molecules of plant origin
and on delivery systems suitable for cutaneous administration. Particularly, some technological aspects are emphasized, such as the skin
structural changes after exposure to molecules of natural origin, as well as the production and characterization of semisolid systems for
cutaneous administration and the use of nanotechnological devices based on components derived from natural sources.
The issue is divided in two parts, assembling ten manuscripts from nine countries, describing research studies on the treatment of skin
disorders by different approaches.
In the first part, Svitina and colleagues have summarized in vitro and in vivo studies, demonstrating that the use of Aloe materials (i.e. gel,
whole leaf, isolated polysaccharides and anthraquinones) has attractive potential for the treatment of skin related disorders and for cosmetic
applications . The review by Styrczewska and colleagues has outlined the suitability of oil seed plants in treatment of various inflammatory
skin disease, such as actinic keratosis, skin barrier repair and wound healing. In addition, the mechanism of action for fatty acids, selected
mono-, sesqui-, di-and triterpenes, carotenoids, tocopherol and polyphenols are described . Notably Lim and colleagues have reported on
the positive effects of ozonated oils on wound healing, underling the importance of the ozonated degree of the oil. Indeed, it has been demonstrated
that ozonated oils possess bactericidal, antiviral, and antifungal properties . Bruschi and his research group have presented the possibility
to treat psoriasis by photodynamic therapy, using molecules from vegetable sources as photosensitizer agent. The authors outlined
that, although photodynamic therapy is widely utilized for the treatment of psoriasis, few photosensitizers from plant sources have been utilized
(i.e. chlorophyll derivatives and hypericin) representing a safe and cheap alternative for the successful photodynamic treatment of this
pathology . Concerning the cosmeceutical field, Zaid and Al Ramahi have summarized the actual state of the art about the antiaging treatment,
UV protection and depigmentation by natural molecules. Indeed, many plant-derived molecules can influence melanin synthesis by
different mechanisms (e.g. Arbutin, Licorice extract, Glabridin, Liquiritin and Kojic acid), furthermore natural antioxidants have anti-aging
properties, due to their capability to counteract the effects of reactive oxygen species in skin cells . The authors have underlined the importance
of developing an appropriate vehicle to ensure suitable absorption of these natural products.
I would like to thank all the authors for their excellent contributions and the Current Pharmaceutical Design publishing team for its help.
Pharmacologic innovation is an integral part of health care innovation and is continually changing the way we practice medicine. In the
field of anesthesia, critical care and perioperative pain management, a solid understanding of the indications, mechanism of action, side effects,
and contraindications of pharmacologic agents is essential for the safe and effective management of our patients. This issue titled
“Pharmacologic Agents in the Perioperative Period: New Medications and New Indications” includes a review of pertinent topics to the perioperative
physician and focuses on perioperative management topics where introduction of new pharmacologic agents (e.g.: sugammadex,
angiotensin II) or the expansion in the indication of other agents (e.g.: liposomal bupivacaine for management of postoperative shoulder pain)
has revolutionized our practice. This issue also has a dedicated review of direct oral anticoagulants (also called non vitamin K dependent oral
anticoagulants) and the management of patients taking these classes of medications in the perioperative period, including reversal options for
this class of medications. Furthermore, a separate review of advances in indications and types of prohemostatic agents in the perioperative
period is presented including the management of direct oral anticoagulant induced bleeding in the perioperative period, an increasing challenge
faced by anesthesiologists.
In addition, this issue outlines perioperative management approaches in two specific patient populations, the pediatric population because
of the increasing concern about the potential deleterious effects of anesthetic medications on the developing brain and the obese patient
population undergoing bariatric surgery because of the different pharmacokinetic and pharmacodynamic properties of anesthetic medications
that influence the choice of medications and drug dosing in this patient population. Ultimately, the goal of this issue is to further improve our
surgical patient outcomes by advancing our knowledge of new pharmacologic agents in the perioperative period.
Many thanks to all our authors for their contribution to this issue and to the editorial team at “Current Pharmaceutical design” for their
diligence in ensuring a high quality product for the readers of this journal. Here is an introductory list to the authors and their review articles
that are included in this special issue of journal Current Pharmaceutical Design. We hope the readers of this journal will find these reviews
pertinent and useful.
Alvarez A. et al.  from the Hospital Italiano in Buenos Aires, Argentina and his colleagues provide an in depth review of the choice of
perioperative anesthetic medications in patients undergoing bariatric surgery . The authors present a thorough overview of the influence of
body weight on the pharmacokinetics and pharmacodynamics of anesthetic medications including recommendations on drug dosing in this
Farag E.  and his colleagues from the Cleveland Clinic in Cleveland, USA present a review on multimodal analgesia for perioperative
management of patients presenting for spine surgery  including opioid sparing strategies as essential components of enhanced recovery
after surgery pathways.
Knotzer H. et al. from the Klinikum Wels in Austria and his colleagues present a comprehensive review on “Pharmacologic Agents for
the Treatment of Vasodilatory Shock”  including the newly introduced pharmacologic agent angiotensin II which showed promising results
in recent trials.
Maged Argalious M. and his colleagues  at the Cleveland Clinic in Cleveland, USA provide an in depth review of sugammadex, including
its current indications, mechanism of action, limitations, side effects and contraindications. This review titled “Sugammadex for Reversal
of Neuromuscular Blockade: Uses and Limitations”  also describes the use of sugammadex in special situations, including the
dreaded “cannot intubate cannot oxygenate” scenario.
Lamperti M. et al.  from the Cleveland Clinic in Abu Dhabi, United Arab Emirates and his coauthors provide an evidence based overview
of the perioperative management of patients receiving new anticoagulants . This timely topic provides guidance to the practicing
perioperative physician on the most recent guidelines regarding the perioperative use of non-vitamin K dependent oral anticoagulants (also
called direct oral anticoagulants) and perioperative management strategies of patients receiving these pharmacologic agents.
Kietaibl and Kietaibl  from the Evangelical Hospital in Vienna, Austria and her coauthor present a comprehensive review of new prohemostatic
agents, the indication for their use in the perioperative period,  including a review of targeted reversal agents specifically approved
for the management of specific direct oral anticoagulants.
Finally, Hansen T.G. et al.  from Odense University Hospital, Odense, Denmark, together with his coauthors from Aberdeen, Scotland
in the United Kingdom present their review article on “Anesthesia for the Growing Brain”  including an evidence based approach with
support from animal and human studies that tackle the effect of exposure to anesthetic agents and its impact on neurodevelopment in the pediatric
population as well as measures to minimize harm to the pediatric patient undergoing anesthesia.
Obesity is defined as abnormal or excessive fat tissue accumulation that may impair health and well-being and also increases death risk.
Obesity occurs as a result of physiological responses of the organism in situations when the caloric intake is greater than energy expenditure
consumption over an extended period of time, resulting in energy conservation. According to the World Health Organization (WHO), overweight
and obesity are the fifth of the leading risk factors for global deaths and they could be defined as a chronic metabolic disorder associated
with cardiovascular diseases (CVD) and increased risk of morbidity and mortality.
Today, it is accepted that obesity is closely related to Insulin Resistance (IR). Metabolic and hormonal changes occurring first of all with
increased visceral obesity which is a characteristic of metabolic syndrome, lead to IR development in adipose, liver and muscle tissue. It is
assumed that IR, which occurs due to obesity, represents the first step in CVD development. Partly, IR increases the risk for CVD development
due to the presence of multiple risk factors as hypertension and dyslipidemia, and changes in adipocytokines lead to blood vessel inflammation.
Besides that, obesity adversely affects hemodynamic, structure and function of the cardiovascular system (CVS). Cardiovascular
complications associated with obesity greatly contribute to increased risk of morbidity and mortality.
Due to the rising number of obese patients and also the presence of IR and CVD in these patients, the study of adipose tissue and its effects
on the development of various pathophysiological states as IR and CVD represents a very important area of biomedical research which
would lead to new therapeutic approaches in these conditions. Also, in order to prevent obesity development and associated disorders, prevention
and education are of great importance.
In this special edition of the journal Current Pharmaceutical Design, the following reviews are included:
Ioanna Gouni-Berthold  from the Polyclinic for Endocrinology, Diabetes and Preventive Medicine, University Hospital of Cologne,
(Cologne, Germany) and co-author, review the current options for the pharmacotherapy of obesity. They presented data on available therapies
in detail. They pointed out that although the prevalence of obesity is now more than 30% in many industrialized countries, the number of
pharmacological options for its treatment remains limited.
Djordje Radak  from the Vascular Surgery Clinic, “Dedinje” Cardiovascular Institute (Belgrade, Serbia), with co-authors reviewed
the Obesity-associated Risk in Open and Endovascular Repair of Abdominal Aortic Aneurysm. In this review, the authors provided evidence
from the current literature concerning the outcomes of open and endovascular treatment of abdominal aneurysm in obese patients. In conclusion
authors stated that associated comorbidities inevitably lead to a selection bias leaning towards endovascular abdominal aortic repair
(EVAR), as a less invasive treatment option, which makes it hard to single out obesity as an independent risk factor. EVAR seems like a more
feasible treatment option than OR for obese patients with AAA, due to lower overall morbidity and mortality rates, as well as reduced woundrelated
Manfredi Rizzo  from the PROMISE Department, the University of Palermo (Palermo. Italy) and co-authors presented up-to-date
information about relationships between the microbiome and obesity. In this manuscript, authors tackle important topics related to the understanding
of the impact of resident microorganisms on human physical health and present medical treatment to restore metabolic health.
Moreover, this review discusses possible mechanisms linking gut microbiota dysbiosis and obesity, since there is a dual interaction between
the two of them. Furthermore, comments on bariatric surgery, as a favorable model to understand the underlying metabolic and inflammatory
effects, as well as its association with changes in the composition of the gut microbiota, are also included.
Niki Katsiki  from the First Department of Internal Medicine, Division of Endocrinology and Metabolism, Diabetes Center, Medical
School, AHEPA University Hospital ( Thessaloniki, Greece), and co-author review the relationship between the metabolic syndrome and the
risk of microvascular complications in diabetic patients. Precisely, in their narrative review they discussed the associations of obesity and
Mets (as well as NAFLD) with diabetic kidney disease (DKD), diabetic retinopathy (DR) and diabetic peripheral neuropathy (DPN) as well
as cardiac autonomic neuropathy (CAN). The available data on the effects of lifestyle measures and bariatric surgery on these diabetic complications
are also briefly considered.
Ying Tan  from the Department of Emergency Medicine, Department of Burns, Nanfang Hospital, Southern Medical University,
(Guangzhou, China) and co-authors summarize the recent experimental and clinical progress on myocardial mitochondrial morphology and
function in sepsis and discuss possible underlying mechanisms, as well as the contemporary interventional options. In addition, the authors
also review the research progress on changes of mitochondrial morphology and function during sepsis, assess its fundamental principles and
generally discuss the present interventions.
Gordana Jaksic  from the Institute Vinca, (Belgrade, Serbia) and co-authors review the potential of Gentiana lutea in Treatment of
Obesity-Associated Diseases. Authors reported the effects of Gentiana lutea extract on molecular signaling altered in obesity, diabetes mellitus,
and other diabetic complications. They concluded that GL extract has significant potential as a functional food in the prevention and treatment
of obesity, diabetes and CVD complications.
Jun Ren  from the Center for Cardiovascular Research and Alternative Medicine, University of Wyoming College of Health Sciences,
(Laramie, USA) and co-authors in their work aimed to identify the effects of trehalose on mTOR-independent autophagy in an Akt2 knockout-
induced model of insulin resistance. This study was designed to examine the effect of the mTOR-independent autophagy inducer trehalose
on kidney and skeletal muscle (Gastrocnemius) injury in an Akt2 knockout-induced model of insulin resistance. Akt2 knockout
(Akt2-/-) and adult WT mice were treated with trehalose (1 mg/g/d) intraperitoneally for 2 days, followed by 2% trehalose in drinking water
for 2 months. Intraperitoneal glucose tolerance test (IPGTT) and protein carbonyl content were examined. Apoptosis and autophagy protein
markers were monitored using Western blot analysis. Akt2 ablation impaired glucose tolerance and protein carbonyl formation in the kidney
and skeletal muscles, associated with pronounced apoptosis and overt autophagy, the effects of which, with the exception of IPGTT, were
greatly ameliorated or negated by trehalose treatment. Moreover, phosphorylation of mTOR was downregulated in both kidney and skeletal
muscles from Akt2-/- mice, the effect of which was attenuated by trehalose. Levels of Akt (pan and Akt2) were much lower in Akt2-/- mice,
the effect of which was unaffected by trehalose treatment although trehalose itself upregulated pan Akt levels. Taken together, these data
suggest that the autophagy inducer trehalose rescued against insulin resistance-induced kidney and skeletal muscle injury, apoptosis, and excessive
autophagy, possibly in association with restored mTOR phosphorylation without affecting Akt.
Active nanotargeting is now one of the best approaches in many serious therapies such as cancer, inflammatory and gene disorders, with
the advantage to specifically deliver active molecules to the target tissues or organs, improving the therapy efficiency and decreasing the exposure
of patients to toxics. In this issue, we would highlight some of the more recent and advanced strategies for active nanotargeting, also
trying to focus on those pathologies for which the current and conventional treatments still exhibit limited efficacy and safety.
Alterations into the articular cartilage lead to osteoarthritis, a severe joint disease only currently treated for symptoms or with surgery.
The first review article  presents an overview of the composition, the causes and treatments of osteoarthritis, with a special emphasis on
nanomaterials as carriers of drugs and cells, which reduce inflammation, promote the activation of biochemical factors and ultimately contribute
to the total restoration of articular cartilage. In particular, locally administered nanobiomaterials, such as hydrogels and nanohydrogels
can promote in situ cartilage regeneration by in situ release cells, anti-inflammatory drugs, and growth factors.
Targeting brain is one of the most unsolved challenges in therapy. Biochemical studies more recently revealed the effects of Lysosomal
storage disorders (LSDs), a group of serious genetic diseases characterized by the accumulation of non-catabolized compounds in the
lysosomes. LDs mainly affect the central nervous systems (CNS), which is difficult to reach with drugs and biological molecules due to the
presence of the blood-brain barrier (BBB). A review  aims to examine the strategies successfully developed during the last decade for the
treatment of LDs. Among the LD treatments, this review also analyzed the challenges of the study to design new drug delivery systems for
the effective treatment of the LDs. Polymeric nanoparticles and liposomes are explored from their technological point of view and for the
most relevant preclinical studies showing that they are excellent choices to protect active molecules and transport them through the BBB to
target specific brain substrates for the treatment of LDs.
Macrophages play a role in almost every disease such as cancer, infections, injuries, metabolic and inflammatory diseases and are becoming
an attractive therapeutic target. However, understanding macrophage diversity, tissue distribution and plasticity will help in defining
precise targeting strategies and effective therapies. Active targeting of macrophages using nanoparticles for therapeutic purposes is still at its
infancy but holds promises since macrophages have shown high specific uptake of nanoparticles. Here we highlight recent progress in active
nanotechnology-based systems gaining pivotal roles to target diverse macrophage subsets in diseased tissues .
In the last few years, immunotherapy has become a promising strategy to fight cancer, as its goal is to reprogram or activate anti-tumour
immunity to kill tumour cells, without damaging the normal cells and provide long-lasting results where other therapies fail. However, the
immune-related adverse events due to the low specificity in tumour cell targeting, strongly limit immunotherapy efficacy. In this regard,
nanomedicine offers a platform for the delivery of different immunotherapeutic agents specifically to the tumour site, thus increasing efficacy
and reducing toxicity . Indeed, playing with different material types, several nanoparticles can be formulated with different shape, charge,
size and surface chemical modifications making them the most promising platform for biomedical applications. In particular, leukocyte infiltration
plays a role in controlling tumour development and is now considered as one of the hallmarks of cancer. In this review, we will summarize
different types of cancer immunotherapy currently in clinical trials or already approved for cancer treatment. Then, we will focus on
the most recent promising strategies to deliver immunotherapies directly to the tumour site using nanoparticles.
Increasing evidence has suggested that extracellular vesicles (EV) mediated bidirectional transfer of functional molecules (such as proteins,
different types of RNA, and lipids) between cancer cells and tumor stromal cells (immune cells, endothelial cells, fibroblasts, stem
cells) and strongly contributed to the reinforcement of cancer progression. Thus, intercellular EV-mediated signaling in tumor microenvironment
(TME) is essential in the modulation of all processes that support and promote tumor development like immune suppression, angiogenesis,
invasion and metastasis, and resistance of tumor cells to anticancer treatments. Besides EV potential to revolutionize our understanding of
the cancer cell-stromal cells crosstalk in TME, their ability to selectively transfer different cargos to recipient cells has created excitement in
the field of tumor-targeted delivery of specific molecules for anticancer treatments. Therefore, in tight connection with previous findings, this
review brought insight into the dual role of EV in modulation of TME. Thus, on one side EV create a favorable phenotype of tumor stromal
cells for tumor progression; however, as future new class of anticancer drug delivery systems, EV could re-educate the TME to overcome the
main supportive processes for malignancy progression .
Multifunctional nanocomposites have a controlled drug release property . Interestingly, the upconversion emission intensity of the
multifunctional carrier increases with the released amount of model drug, thus allowing the release process to be monitored and tracked by
the change of photoluminescence intensity. This composite can act as a multifunctional drug carrier system, which can realize the targeting
and monitoring of drugs simultaneously.
The first part of this Special Issue on redox active nutraceuticals and their impact on nutrition and health in modern society has considered
some of the rather prominent nutritional components and supplements. It has provided evidence that certain diets, such as the famous Mediterranean
diet, appear to be healthier than others. Still, such findings are not entirely uncontroversial. It is therefore worthwhile to consider
such diets and nutritional strategies both, in more detail and also with a wider angle. This dual approach may, at first sight, appear paradoxical.
Still, a more detailed consideration of the underlying biochemistry may, for instance, bestow us with information on why such diets may
be superior to others. In contrast, a wider angle on nutrition and designer foods appears necessary, as such changing habits will also impact on
society as a whole, from agriculture and farming to resources and the environment, social and cultural issues, personal preferences and even
philosophy. These discussions are not always entirely uncontroversial and often require more research and debate. We will therefore highlight
some of the studies of and approaches to these more difficult issues, such as antioxidants and causality, with the aim to raise awareness that
nutrition is not just what we eat during the day. Indeed, sausages do not grow during the night in the local supermarket, they have a history,
and also go somewhere after they have left us again. Please enjoy your meal and the second part of the Special Issue.
So far, a major section of the Special Issue has focussed on diets rich in fish, as these appear to be particularly beneficial to human health.
Although such diets are widespread across Southern Europe, the Mediterranean and many other regions in the world featuring a coast, there
are also places where fish is seen as exotic and a culinary niche product. There is, for instance, no “fish and Sauerkraut” in Germany, and any
attempt of serving a healthy fish sausage with honey mustard at the Oktoberfest in Bavaria may have you stripped of(f) your Lederhosen,
literally. Other culinary delights, mostly plants, have therefore become a focus of special interest - and not only for Bavarians or vegetarians.
These include the pomegranate, reviewed here by Vesna Vučić and her colleagues from University of Belgrade and oils and extracts from
oregano, a medicinal culinary herb and spice popular in many cuisines across the Globe, reviewed here by Armen Trchounian and his colleagues
from Yerevan State University [1, 2]. In many of these studies, the focus resides on antioxidants, as these substances may counteract
oxidative stress - in turn being considered as a prime cause of many age-related disorders, ranging from chronic inflammation to degenerative
diseases. Essential aspects of antioxidant supplementation include a mechanistic study on the impact of antioxidant natural compounds on the
thyroid gland and Keap1/Nrf2 signalling pathway by Gerasimos Sykiotis and colleagues from Lausanne University Hospital . Rosario
Pastor and Pep Tur subsequently consider adaptive responses to training, which may interplay with antioxidant supplementation . Similarly,
Izabela Koss from Gdansk University of Technology and her colleagues raise the essential question if and why fruits and vegetables
may be superior to dietary supplements and isolated phytochemicals .
These aspects of nutraceuticals pave the way to more applied aspects of food and health and to philosophical, often bioethical and epistemological
questions. A contribution by Armen Trchounian and colleagues considers in vitro culture in form of callus as a rich source of secondary
metabolites, some of which may differ from the ones found in the corresponding intact plant and may also exhibit activity against
antibiotic-resistant bacteria . Moving into a different direction of “applied nutraceuticals”, a meta-analysis of biochemical interactions from
the perspective of epistemology highlights just some of the less obvious investigations possible and certainly necessary in this field. The study
by Barbara Osimani from Marche Polytechnic University and her colleagues on the concept of “mechanistic evidence” demarcates new interfaces
of current nutraceutical design, with philosophy and also with psychology, sociology, economics, ecology, politics and other disciplines
across the spectrum of natural and social sciences . Oguz Bayraktar and collegues from Ege University focus on a more practical approach
by providing valuable insights into drug delivery of natural products .
Together, these contributions, spanning various sections of this Special Issue, cover a vast range of topics from hyperbaric oxygen therapy
and selenium on the one side to the ethics of adulterated German sausages and an epistemological view on mechanism on the other. They also
underline the challenges and requirements - and especially the excitement and opportunities - associated with this emerging field of research.
No doubt, there are many important topics in current pharmacological design, from antibiotic resistances to inflammation. Still, once we consider
the prevention of diseases and maintaining quality of life for billions of ageing people, we are playing in a league where simple rules of
pharmacy, such as administering effective drugs for a short time and ignoring some side-effects, give way to regular spiced and spiked diets
assembled on an individual basis from the global food store, and considered for their ethical, social, cultural, economical and ecological acceptance.
This Special Issue may therefore serve as an appetizer to raise interest and awareness of the field of nutraceuticals. In 2020, Bentham
will launch a new journal of the Current series and with “Current Nutraceuticals” will stay firmly at the forefront of these developments
As an outcome of globalisation and advances in modern medicine, the 21st Century is witnessing dramatic demographic changes in societies
across the Globe. Whilst a sharp increase in populace in many developing countries raises the demand for more, and more advanced
medications against common illnesses and epidemic outbreaks of infectious diseases, already developed societies are faced with - often rapidly
- ageing and fragile populations. The average life expectancy in many European countries, for instance, has risen from around 52 years in
1900 to 80 years in 2000, and similar developments are seen in the US, Japan and many other countries [1, 2]. And although this situation of
ageing is intrinsically positive, it is also accompanied by new challenges related to healthy ageing and age, and the quality of life in persons
above 70 or 80 years old with their own age-specific biology and needs [3-8]. Indeed, countries or regions with large populations in this age
group face numerous social, political, ecological and economical challenges, which culminate in the demand for comprehensive medical support
[6, 8-10]. From a scientific perspective, solutions to these challenges are far from trivial. In Germany, for instance, a majority of persons
above the age of 60 regularly take five to six different medications to maintain their health, often resulting in adverse interactions and side
effect caused by poly-medication [11, 12]. At the same time, the demand for medications places a serious burden on the economy, and the
pollution of the environment with disposed medications and excreted metabolites is also no longer entirely negligible. This situation is far
from satisfactory and is likely to deteriorate further as more societies worldwide begin to age.
Not surprisingly, there have been various attempts to provide alternatives to extensive over-medication of vast parts of the - elderly -
population. One particularly promising approach involves the design and implementation of so-called “healthy diets” for individual sections
of the population [13-15]. The idea of “healthy eating” has a long tradition, and besides being “natural” and therefore generally socially
acceptable, also has certain advantages from a fairly practical, “pharmaceutical” perspective. First of all, food is consumed regularly and in
considerable amounts of around two to three kilogrammes per adult a day. Any biologically active ingredients stowed away in such a quantity
of tasty food are therefore also taken up regularly, in equally good quantities and even with pleasure, and without any issues regarding “compliance”.
Secondly, plants harbour many biologically active secondary metabolites, and some of them have served as lead structures of modern
medicines . It is therefore not implausible to expect some health benefits from the substances found in our daily diets. Such notions
are not new. Still, the challenges of ageing on the one side, and the opportunities arising from a global food marketplace on the other, have
provided new impetus to consider more inclusive and perhaps exotic designer foods and diets based on ingredients harvested from different
regions and corners across the Globe.
At this point, a thorough scientific investigation of biologically active ingredients in food, so-called “nutraceuticals” clearly needs to be
placed high on the menu and before any cross-continental mishmash is served. Here, the chemical composition of such foodstuff, from colourful
herbs and spices to exotic and often smelly foods needs to be analysed, biologically active ingredients need to be identified, quantified
and their biological activities and modes of action studied comprehensively. In parallel, biomarkers of disorders or diseases, for instance of
oxidative stress, need to be defined and monitored in the sick and elderly - and also in response to diet and dietary changes. The awareness of
these nutraceuticals, and their impact on human health, in prevention and also as a remedy, will then, and only then, enable us to propose and
design diets adequate for healthy eating - and to support healthy ageing. These recommendations will be developed on an individual basis or
for cohorts, rather than universally, as today still is commonly the case in popular medicine advertised by self-proclaimed “nutritionalists”.
Besides “chemistry” and “biology”, such a scientifically sound and comprehensive approach will also need to address social and cultural aspects
. Just imagine the Queen faced with a tender sliced Durian laced with a rich garlic sauce at a State Banquet, or a vegetarian confronted
with an equally healthy fishy Mediterranean Diet, and the message will be clear: Nutraceutics is a highly interdisciplinary field intertwined
with pharmacy, spanning across disciplines from basic chemistry and cell biology to medicine, psychology, sociology and even philosophy,
and always with considerable impact on the individual on one side and society on the other.
It is therefore my great pleasure to welcome you to this Special Issue on “Redox active Nutraceuticals”, with contributions reflecting the
current excitement in this multi-cultural and multi-disciplinary field of research. This Special Issue is authored by the many colleagues and
close friends of the EU COST Action 16112 “Personalized Nutrition in aging society: redox control of major age-related diseases”, acronym
“NutRedOx”, who have been essential for the success of this collection and to whom I am deeply indebted to for their many excellent contributions
The Special Issue is divided into two parts. In the first part, we will consider some of the rather prominent approaches to nutrition and
health, from the “usual suspects”, such as vitamins and trace elements, to diets traditionally associated with “healthy eating”. Here, the Mediterranean
diet stands out, as it goes easy on meat, animal fat, salt and carbohydrates and, as an interesting alternative, is rich in fish, unsaturated
vegetable oils, spices and legumes. The second part of the Special Issue will then turn towards more controversial issues, such as the
natural uptake or supplementation of antioxidants and wider issues surrounding nutrition. In this section, more applied aspects, from manufacture
to philosophy are combined to illustrate that nutrition is not - just - great food, it is also a matter of society, ecology, agriculture, culture
and economics. So welcome to the first part, and bon appétit!
Parasitic infections caused by helminths and protozoans are worldwide distributed, mainly in tropical and subtropical areas. They are
strongly associated with high morbidity and mortality rates, in spite of continuous advances on traditional therapeutic approaches . More
recently, parasitic infections have been demanding even more attention due to their opportunistic pattern when associated with HIV/AIDS,
organ transplantation or administration of prolonged regimens with immunosuppressive drugs. In such conditions the balance between the
host and the parasites is enormously affected, culminating in worse prognosis or even in fatal outcomes. Traditional chemotherapeutic agents
used to treat many infections present limited efficacy but high toxicity to the host, elevated costs and increasing parasitic resistance. In many
cases, these drugs are intravenously administered with long cycles of treatment, resulting on low adherence and therapeutic failure . For
that reason, nanoscaled drug delivery systems (NDDS) have been denoted as novel therapeutic tools. Studies on NDDS have increased exponentially
in last few years and demonstrated some noticeable advantages of these systems over classical drug formulations. For instance, biocompatible
materials have been used with increased surface of contact and potential specific targeting to the site of infection. Despite of
amazing advances in the nanomedicine field, many aspects regarding the development and the clinical implementation of the NDDS, such as
the mechanisms of action, the immunomodulatory properties, the material stability and the optimization of potential nanodevices needs further
In this special edition of the journal Current Pharmaceutical Design, the development and the use of NDDS as novel therapeutic strategies
against parasitic diseases are revised. For this Thematic Issue, leishmaniasis was chosen as a model parasitic disease due to its complex hostparasite
interaction, outdated but still adopted therapeutic strategies, increasing reports of drug-resistant parasites and diverse spectrum of
clinical forms distributed worldwide. Then, a final review about the recent advances of nano-delivery of plant extracts against a larger group
of parasitic diseases serves as an indication about the future directions towards the treatment of parasitic diseases.
In the first article of this series, Wagner et al.  discusses the potential application of nanoscale drug delivery systems (specifically
lipid-, polymer- and metal-based systems) for treatment of leishmaniases, a complex parasitic disease which affects millions of people
worldwide. Authors elegantly present how the advancement of the nanotechnology would solve the current pharmacological problems in
leishmaniasis treatment: decreased bioavailability of drugs, elevated toxicity to patients and parasite resistance to existing chemotherapeutic
Expanding the discussion over the drawback healthcare professionals face during the treatment of leishmaniasis, Rodríguez-Carlos et al.
, revises the potential use of antimicrobial peptides-based NDDS as an approach for controlling Leishmania spp. infection. Authors demonstrate
how human host defense peptides (HDP) can be included given their antimicrobial and immunomodulatory activities.
Finally, Gondim et al.  discussed the use of plant extracts loaded in NDDS as an alternative to current therapies for treating parasitic
diseases. Authors compile the most recent data on biological activities of these nanoscaled systems and discuss how the NDDS might interfere
in the stability, solubility, bioavailability and release of the plant compounds when tested against models of parasitic infections in vitro
and in vivo.
Furthermore, Araújo et al. , developed an Amphotericin-B-containing nanoemulsion with exciting in vitro efficacy on the promastigote
form of Leishmania chagasi. Their oil/water nanoemulsion efficiently encapsulated the drug resulting in a spherical morphology and nanometer-
sized structure. This strategy would serve to exemplify the potentialities of NDDS to overcome systemic delivery and bioavailability of
hydrophobic and toxic drugs currently used in the treatment of parasitic diseases.
It was a great pleasure working with the Director Kazim Baig and Editorial Assistant Aamer M. Khan for the opportunity to publish in the
journal Current Pharmaceutical Design. We would like to acknowledge the contributions of others who took care of editing and processing
the manuscripts to obtain the best final quality at the time of publication.
Nanoparticles and Nano-materials are emerging resources involving in the various therapeutic applications including diagnosis, biomarker
mapping, molecular imaging, and gene and drug delivery. The different form of nano-materials involves in the mentioned applications
as the usage of nanoparticles, nanoemulsions, nanosensors, liposomes, polymeric nanoparticles, carbon nanotubes, quantum dots, dendrimers,
and others. The special issue will cover a selection of invited original reviews from the young and expert’s researchers in the field across the
Recently, several nanomaterials have proposed for the development of suitable platforms for mRNA delivery, such as lipids, polymers,
peptides, and inorganic nanoparticles. However, lipid-based vectors are the most frequently used carriers for in vivo RNA delivery. In these
issues, Guevara et al.  discussed the mRNA as a promising novel class of therapeutic molecule with prospective applications in cancer
therapy. The most common classes of lipid-based nanocarriers such as lipoplexes (LPs), lipid nanoparticles (LNPs) and lipopolyplexes (LPPs)
have been discussed for the mRNA cancer vaccine delivery. The authors also portrayed the various parameters that ought to be considered
during the design of lipid-based vectors (LbVs) as delivery platforms for mRNA-based anti-cancer vaccines. The key factors include lipid
composition, structural organization of LBVc, particle size, surface charges, and lipid bilayer fluidity respectively. In addition, it highlighted
the current clinical trials and its overview of lipid-based vectors for the development of therapeutic mRNA-based anti-tumor vaccines.
Carbon-based quantum dots (CQDs) with their zero-dimensional nanostructure have become the focus of intensive research based on
their excellent luminescent properties, good solubility, and biocompatibility. These quasi-spherical nanoparticles (<10 nm) caught considerable
attention based on their physicochemical properties along with their unique wavelength-dependent photoluminescence. Generally, CQDs
are derived from chemical precursor materials, but recently researchers have focused their attention on the production of CQDs from waste
biomass materials due to the economic and environmental exigency. In this review, Thangaraj et al.  discussed recent advances in the
synthesis of CQDs by using the top-down and bottom-up approaches from waste biomass materials, functionalization, and modulation of
CQDs. Also, the potential application of CQDs as biosensors for accurate and precise detection of tumors, pathogens, elevated blood glucose
levels has been discussed. This review also brings out some challenges and future perspectives for developing smart biosensing gadgets based
Metal nano-shells offer exciting perspectives to counteract tumor cells owing to their unique features. Matteis et al.  were described the
current state-of-art of nanosystems embodying gold shells, regarding methods of synthesis, bio-conjugation, bio-distribution, imaging and
photothermal effects (in vitro and in vivo). Moreover, this article discussed the significance of targeted AuNSs enhanced the quality of imaging
contrast by their strong absorption of AuNSs; the diffuse optical tomography was used to localize cancerous site.
Cancer is one of the biggest globally challenging diseases that revolt many lives every day. Notably, the magnetic liposomes (MLS) are
the combination of magnetic nanoparticles (MNPs) with liposomes, which are endowed with advantages of both MNPs and liposomes for
cancer therapy. Anilkumar et al.  reviewed the applicable synthesis methods of MNPs and MLS, followed by a comprehensive assessment
of current strategies to apply MLS for different types of cancer treatments. The authors expanded their view on various applications of MLS
in gene delivery, photothermal/photodynamic therapy or magneto-phototherapy, combined gene therapies, targeted photothermal/
photodynamic therapy, cancer imaging, and therapy.
The high cost of a chemotherapeutics, devoid of early diagnosis, and insufficient awareness about screening programmes are responsible
for the increased mortality and incidence rates of cancer. One of the recent trends in modern medicine is “Theranostics,” which is a combinatorial
term of therapeutics and diagnosis, to reduce the mortality rate of cancer cases. The extensive interest on iron oxide nanoparticles in
cancer theranostics has been increased due to their biocompatibility, superparamagnetism, less-toxicity, enhanced programmed cell death, and
auto-phagocytosis of the cancer cells. Kaliamurthi et al.  highlight the mechanism of action of iron oxide nanoparticles in cancer therapy
through passive and active targeting drug delivery. Also, the physical property and various route of synthesis of the magnetic nanoparticles
has been provided. Besides, the theranostic application of the magnetic nanoparticles with a dual and multi-modal imaging system for earlier
diagnosis and treatment of various cancer types includes breast, cervical, glioblastoma and lung cancer also conferred. Shortly, the theranostic
potential of magnetic nanoparticles with the multimodality imaging techniques may enhance the acuity of personalized medicine in the diagnosis
and treatment of individual patients.
With the emergence of synthetic methods for new molecule synthesis in chemistry and better screening methods, the number of poorly
water-soluble compounds has dramatically expanded in the last few years. In this review, Paudwal et al.  reported the manufacturing and
characterization process of the most promising solid dispersion technology (SDT) to enhance the dissolution characteristics and bioavailability
of poorly water-soluble drugs. The clinical success of SDT has been witnessed in the manuscript by various commercially available marketed
products. Furthermore, the advantages, limitations, classification, various methods and carriers, and mechanism of drug release in stable
dispersion have been illustrated. These advantages illustrate the present commitments and future capability of solid dispersion technology
towards better treatments for an assortment of necessary therapeutic conditions being treated by poorly water-soluble drugs.
The superiority of integrating nanotechnology into proteomics, including ultralow detection, high-throughput capability, real-time detection,
and low sample consumption, can achieve rapid detection on low abundance biomarkers. Nano-assisted mass spectrometry (MS) remarkably
enhanced detection efficiency of proteins or peptides and contributed to the precision diagnostics. Due to the quantitative and dynamic
information provided for human proteome, MS-based quantitative proteomic technique has been a powerful tool for nanomedicine.
Tang et al.  reported the recent trends of progress and development in the nanomedicine of proteomics from quantification techniques and
publicly available resources or tools. Moreover, a variety of favorite protein quantification techniques including labeling and label-free strategies
applied to nanomedicine studies are overviewed and systematically discussed. The authors depicted the numerous protein profiling tools
for data processing and post-biological statistical analysis and publicly available data repositories for providing enrichment MS raw data information
sources are also conferred.
Mycobacterial infection is the etiology of several diseases, and each of the underlying species is having different antibiotic resistance
status to negotiate by formulating an effective alternative therapeutic strategy. Minakshi et al.  provides a detailed account of multiple
nanocarriers includes liposome, micelles, dendrimers, solid lipid NPs, niosomes, polymeric nanoparticles, nano-suspensions, nano-emulsion,
mesoporous silica, and alginate-based drug delivery systems for the treatment of the mycobacterial infections was evidenced in vitro cell lines
and in vivo experimental animal models. Besides, this review illustrated the mechanism of action, etiology of various mycobacterium species
associated diseases, therapeutic drugs and reports of resistance. Further, the multi-faced benefits of the nano antimicrobials in nano-diagnostic
platforms and nanoparticles-based vaccines are also growing in importance to negotiate mycobacterial infections.
We hope multidisciplinary topics on nanomaterials discussed with the theme issue will promote further discussion among researchers in
nano-therapeutics and theranostics applications in drug discovery. As the guest editors, we would like to thank all the authors and co-authors
for their excellent contributions. Besides, we would like to thank a group of scientific experts in computation and cancer drug delivery who
offered their strong comments and suggestions to improve the quality of this special issue. Finally, we would like to express our sincere appreciation
to the Director Kazim Baig, Editorial Assistant Aamer M. Khan, copy-editors and all the editorial staffs in Current Pharmaceutical
Design, Bentham Science Publishers for the excellent opportunity, experience while working with this thematic issue.
Resveratrol and Flavonoids: Therapeutic Studies
The biomedical industry is in constant need of innovative biomaterials. Natural polymers that are biocompatible, biodegradable and safe
for human consumption are presently the high-demand materials. Seaweed industry has an estimated total annual production value of about 6
billion US$ with Asia alone contributing about 87% of the world production . Algae or seaweeds are a diverse group of organisms that are
ubiquitous to oceans and are considered a huge, underexplored reservoir of biomaterials including polysaccharides. These polysaccharides
have traditionally been used as food additives viz. emulsifiers, stabilisers, gelling agents, and thickeners. However, in recent years, algal polysaccharides
have received growing interest of scientific community for its health-related applications with 1 billion US$ market as of in 2010
. Going by the recent number, 30% increase in seaweed market is reported by Food and Agriculture Organization (FAO) in 2016 .
Apart from being biocompatible and biodegradable, these polysaccharides do not have any terrestrial plants equivalent and resemble the
chemical and biological properties of mammalian glycosaminoglycans . This unique property of algal polysaccharides form basis for their
recent biomedical applications in drug delivery, wound dressings, and tissue engineering. Their demand is increasing and they represent a
potential, very inexpensive, resource for these applications.
The present thematic issue is an honest endeavour of the editors to present before the readers a collection of carefully selected and written
twelve reviews highlighting recent advances in therapeutic applications of algal polysaccharides.
A first in the line is a review by Muhamad et al.  revisiting the general information existing on algal-derived polysaccharides including
their source, the structural features, extraction/isolation methods, physicochemical properties, and their multi-functional biological activities.
The next article by Geng et al.  discuss in detail about porphyrans, a sulfated polysaccharide derived from red alga Pyropia. This polysaccharide
is consumed very commonly as food in asian countries and has diverse potential applications ranging from anticancer, neuroprotection,
anti-aging, hypoglycemic and hypolipidemic effects. A review by Qureshi et al.  comprehensively summarizes the recent advancements
in the use of one more sulfated polysaccharide, carrageenan, for designing targeted drug delivery systems. An article by Bouissil et al.
 gives a view of the current therapeutic as well as agricultural applications (fertilizer, bio-elicitor, stimulators, signaling molecules and
activators) of algal polysaccharides and/or their oligosaccharide derivatives obtained by chemical, physical and enzymatic processes. An article
by Venkatesan et al.  highlights the applications of sulfated polysaccharides in bone tissue repair and regeneration. They conclude that
sulfated polysaccharides have exceptional properties in terms of hydrogel forming ability, scaffold formation, and thus mimic the extracellular
matrix required for stem cell differentiation during bone tissue regeneration. In the review by Sajadimajd et al. , the recent progress in
therapeutic application of algal polysaccharide as anticancer agents, is outlined coupled with discussion on the underlying cellular and molecular
mechanisms of their action. Further, the authors illustrate the role of structural chemistry of important polysaccharides like fucoidans,
carageenans, and ulvan in their anticancer activities.
Recent advances in wound healing dynamics suggest that preventing early infection, increasing blood flow, and providing nutrient/growth
factors to the tissue can result in faster wound healing . A comprehensive review by Kumar and Berthiaume  suggested that availability
of a range of mechanical and physical properties along with excellent biocompatibility and biodegradability make algal polysaccharides a
potential candidates for wound dressings or scaffolds for drug delivery. Authors emphasized that other beneficial properties like anti-viral,
anti-bacterial, and anti-fungal activities; ability to modulate coagulation, oxidative stress, inflammatory and immune responses; favorable
oxygen permeability; ability to stimulate local endogenous growth factors, cytokines, and pro-angiogenic factors further strengthen their candidature
to be explored and studied vigorously for wound healing. A review by Gill et al.  discusses the technological advancement observed
in the use of algal polysaccharides, especially alginates, as biomaterials in fabricating 3D scaffolds for drug delivery. Solid free forming
(SFF) technique also called additive manufacturing (AM) fabrication process which is immensely popular owing to its high accuracy,
precision and reproducibility has been discussed at length . The review presents the recent advances in the use of alginate based bioinks
for various SFF techniques (like stereolithography, selective laser sintering, laser direct write, electrodeposition and electrochemical lithography,
extrusion printing, and inkjet printing) in creating 3D structures by its layer by layer processing. Next in the line is a review by Geskovski
et al.  which presents the integrative approaches for the design of biomimetic drug delivery systems based on different algal polysaccharides
that exert multiple biological functions and improved therapeutic and theranostic effects. The authors highlight the fact that although
versatility in the polysaccharide chemical composition ensures it’s bioactive interactions with a variety of biomolecules and cells,
however, the increase in bioactivity array is at the expense of the biomechanical and structural function of the polysaccharide. Therefore, in
order to employ the algal polysaccharides both as drug delivery system building blocks and conveyor of the biomimicking properties, enhancement
of either the structural capabilities or bioactivity are needed. An interesting contribution by Li et al.  describes the structural
and biological features of functionally modified brown algal polysaccharides with special emphasis on recently developed approaches used to
obtain the oligo- and polysaccharides with defined structures. They reemphasized the fact that functional modification of these polysaccharides
can broaden their applications as biomedical materials for controlled release and targeted drug delivery as concluded by Geskovski et al.
The last two article in the collection majorly discuss the pharmaceutical aspects of algal polysaccharides. A review by Severino et al. 
discusses different aspects related to the use of alginate nanoparticles for drug delivery and targeting and how their toxicological profile determines
the therapeutic outcome of the drug delivery system. The last article by Rahmati et al.  reviews possible applications of algalbased
polysaccharides (especially alginate, agar, carrageenan, galactan, fucoidan, ulvan, and porphyran) in controlled drug delivery systems.
In the end, I take this opportunity to most sincerely thank the contributors of this issue, both for complying with the journal instructions of
submission and for providing their manuscripts in time. The intellectual and expert input of worthy reviewers is also highly appreciated. Hope
the readers derive the same level of scientific pleasure that we derived while compiling this thematic issue.
Unique Approaches to Drug Development, Design, and Production
Unique Therapeutic Approaches to Cancer
Adenosine receptors (ARs) belong to the G protein coupled receptors (GPCRs) and are classified into four subtypes viz. A1, A2A, A2B and
A3 ARs . These receptors show different tissue distribution and signalling pathways, and are considered as pivotal drug targets for developing
potential therapeutic agents for modulating several physiological and pathological processes involving cardiovascular, respiratory, renal,
immune and central nervous system . Thus, it is essential to gain proper insight into the active site topology of these receptors along with
the physicochemical properties of ligands required for effective binding and modulating the ARs.
Several case studies from the failure of plenty of potential lead molecules at different stages of the development process of clinical trials
suggested that major emphasis should be given at the early stages of rational drug design and discovery process for identifying new drug-like
molecules in order to save time as well as to enhance the success rate of novel drug development . In this regard, continuous advancement
of computational techniques and algorithms have made computer-aided drug design (CADD) strategies as potential and reliable approach for
rational discovery of new drugs, facilitating a deeper insight into the complex biological events that are experimentally difficult to comprehend
. Moreover, the discovery of the 3D X-ray crystal structure of the A2A AR (PDB:3EML)  has not only augmented researchers’
insight about this receptor but also facilitated the construction of improved homology models and understanding of other AR subtypes .
Several molecular docking and molecular dynamics (MD) simulation strategies  employing either the 3D crystal structure or homology
models of ARs are mainly being used in the pursuit of rational structure-based drug design (SBDD) and discovery of molecules with novel
chemotypes selectively targeting ARs [8-10]. In particular, MD simulation studies are considered as the most valuable in silico approach due
to its diverse reliable applications such as evaluation of binding interactions, kinetics and affinities of agonists/antagonists and allosteric
modulators of ARs, lead optimisation, and refinement of homology models among many others [11, 12]. Further, the recent discovery of 3D
X-ray crystal structure of A1 AR [13, 14] has opened a new arena to computational medicinal chemists, anticipating more SBDD studies in
near future. Ligand-based drug design (LBDD) strategies like 3D-QSAR [15, 16] and pharmacophore modelling have been extensively explored
to gain insight into the physicochemical requirements as well as to predict the binding affinities of ligands particularly for A2B and A3
ARs as their crystal structures are not yet resolved (including A1 AR until the recent discovery of its 3D crystal structure) . Various
LBDD tools are also employed as part of virtual High Throughput Screening (vHTS) to predict the ADMET (absorption, distribution, metabolism,
excretion and toxicity) properties of molecules in order to consider their drug-likeness as a measure reduce the rate of failure of
drug development .
However, several studies revealed that the use of both SBDD and LBDD techniques together with each other [19, 20] increases the robustness
of in silico modelling as compared to the use of either techniques alone. Pabitra et al. in their review illustrated the current use of
both the SBDD and LBDD approaches, highlighting the importance of in silico-in vitro-in vivo correlation (Fig. 1) to rationally design, and
develop novel drugs . It is worth mentioning that advantages of such combined approaches are not being properly explored due to the lack
of availability of various software tools including other required resources to researchers.
Ligand-based in silico techniques including their robustness and limitations in search of novel and selective ligands for ARs have been
discussed in details with specific examples by Pabitra et al.  and Nikhil et al. . Extensive reviews by Nizar et al.  and Mohammed
et al.  provide special emphasis on the several aspects of SBDD strategies that are currently being explored including homology modelling,
molecular docking and MD studies of ARs. This thematic issue highlights the recent advancement, strengths and limitations of various
in silico approaches towards ARs in order to facilitate the researchers to design and develop new strategies for the discovery of novel potential
therapeutic agents selectively targeting AR subtypes.
Сancer and cardiovascular disease (CVD) are noncommunicable diseases and are the leading causes of global mortality and the major
factors affecting life expectancy worldwide [1,2]. Correspondingly, these pathologies remain the focus of biomedical research, with thousands
of studies published every year. In this part of the Thematic Issue, we present a collection of reviews on the latest achievements in the
field. In addition to cancer and CVD, this issue includes two interesting reviews on depression therapy.
Ya-Hui Hu, Lin Zhou, Shan-Shan Wang, Xia Jing, Hong-Li Guo, Fang Sun, Yong Zhang, Feng Chen, Jing Xu, and Xing Ji from China in
their review “Genetic variants of drug transporters impacting methotrexate disposition in pediatric patients with acute lymphoblastic leukemia:
what we have learn?” focus on genetic polymorphisms of methotrexate-disposition involved transporters and discuss the potential association
between the genetic variants and methotrexate efficacy, toxicity, pharmacokinetics of methotrexate treatment .
Veronika A. Myasoedova, Vasily N. Sukhorukov, Andrey V. Grechko, Dongwei Zhang, Elena B. Romanenko, Varvara A. Orekhova,
and Alexander N. Orekhov from Russia and China in their review “Inhibitors of DNA methylation and histone deacetylation as epigenetically
active drugs for anticancer therapy” briefly discuss the mechanisms of cancer-associated epigenetic modifications as well as existing in clinical
practice and prospective epigenetically-active anti-cancer agents .
Authors from Qatar and India Uzma Zaheer, Muhammed Faheem, Ishtiaq Qadri, Nargis Begum, and Shilu Mathew in their review “Expression
profile of microRNA: an emerging hallmark of cancer” discuss the role of miRNAs in cancer biology and their potential as diagnostic
and prognostic biomarkers and therapeutic tools .
Authors from China Lei Fang, Fengzhou Li, and Chundong Gu in their review “GDF-15 is a multifunctional modulator and potential
therapeutic target in cancer” discuss the multifunctional roles of growth differentiation factor-15 (GDF-15) in tumor and its value in practical
treatment. They postulate that GDF-15 can be used as a tool for the diagnosis and therapy of a wide range of cancers .
In a short review “Cellular and molecular basis of osteoblastic and vascular niches in the processes of hematopoiesis and bone remodeling
(A short review of modern views)”, a group of Russian authors Yurova К.А, Khaziakhmatova О.G., Melaschenko Е.S., Malashchenko V.V.,
Shunkin E.O., Shupletsova V.V., Ivanov P.A., Khlusov I.А., and Litvinova L.S. present the ideas about the evolutionary formation of osteoblastic
and hematopoietic niches that are rarely discussed in the literature. The authors discuss the molecular mechanisms of the regulation
of these processes .
Priscila de Souza, Luisa Mota da Silva, Sérgio Faloni de Andrade, and Arquimedes Gasparotto Junior from Brazil in their review “Recent
advances in knowledge of natural-derived bioactive as modulating agents of the renin-angiotensin-aldosterone system: therapeutic benefit in
cardiovascular diseases” focus on medicinal properties of natural compounds as modulating agents of the renin-angiotensin-aldosterone system.
The authors provide information that bioactive compounds isolated from natural products act either by inhibiting the angiotensinconverting
enzyme or directly by modulating the AT1 receptors of angiotensin II, which consequently changes the entire classical axis of this
A Japanese team of Shunsuke Miyauchi, Michiaki Nagai, Keigo Dote, Masaya Kato, Noboru Oda, Eiji Kunita, Eisuke Kagawa, Aya Yamane,
Tasuku Higashihara, Arinori Takeuchi, Akane Tsuchiya, and Kosuke Takahari dedicated their review article “Visit-to-visit blood pressure
variability and arterial stiffness: which came first: the chicken or the egg?” to the analysis of the literature on the usefulness of visit-tovisit
blood pressure variability in the relationship to arterial stiffness. The relationship between visit-to-visit blood pressure variability and
coronary arterial remodeling was reviewed for the first time .
A Russian team of authors Margarita A. Sazonova, Anastasia I. Ryzhkova, Vasily V. Sinyov, Marina D. Sazonova, Zukhra B. Khasanova,
Nadezhda A. Nikitina, and Igor A. Sobenin in their article “Creation of cultures containing mutations linked with cardiovascular diseases
using transfection and genome editing” review the existing approaches to create cell cultures containing mutations associated with cardiovascular
Shuangshuang Zhang, Yong Wang, Jinsong Cheng, Ning Huangfu, Ruochi Zhao, Zhenyu Xu, Fuxing Zhang, Wenyuan Zheng, and Dandan
Zhang from China in their review “Hyperuricemia and cardiovascular disease” focus on the physiology and epidemiology of
hyperuricaemia and discuss its relationship with cardiovascular disease. They also discuss the treatment for reducing urate levels in cases of
cardiovascular disease and hyperuricaemia .
E.V. Konstantinova, N.S. Chipigina, M.H. Shurdumova, E.I. Kovalenko, and A.M. Sapozhnikov from Russia in their review article “Heat
shock protein 70 kDa as a target for diagnostics and therapy of cardiovascular and cerebrovascular diseases” summarize the latest findings on
the protective role of HSP-70 chaperone in several cardiovascular diseases: myocardial and cerebral ischemia and atherosclerosis .
Hai-Yue Lan, Bin Zhao, Yu-Li Shen, Xiao-Qin Li, Su-Juan Wang, Li-Jun Zhang, and Hong Zhang from China in their review article
“Phytochemistry, pharmacological activities, toxicity and clinical application of Momordica cochinchinensis” provide a comprehensive overview
of Momordica cochinchinensis in phytochemistry, pharmacological activities, toxicity and clinical application .
The review article entitled, “The low molecular weight brain derived neurotrophic factor mimetics with antidepressant-like activity” by
T.A. Gudasheva, P. Povarnina, A.V. Tarasiuk, and S.B. Seredenin from Russia is focused on several low molecular weight mimetics of brain
derived neurotrophic factor and review their potential use as antidepressants. The current advances in the development of potential antidepressants
are also considered .
International team of authors from Iran and UK Zohre Fathinezhad, Robert D.E Sewell, Zahra Lorigooini, and Mahmoud Rafieian-Kopaei
in their review “Depression and treatment with effective herbs” revise the treatment of depression with the use of medicinal plants and discuss
the possible mechanism of action, efficacy on depression and toxicity of herbs .
In this issue, several teams of international experts discussed the most novel topics relating to the problem of drug target discovery and
treatment of cancer, CVD and depression which makes this special issue interesting for a wide range of potential readers.
Pharmacotherapy is a very powerful tool to improve medical outcome of pregnant women as well as their fetuses and infants. Unfortunately,
only 5% of available drugs have been properly monitored, tested and labelled for use during pregnancy and lactation . Pregnant or
lactating women are usually excluded from trials, resulting in an unacceptable situation where pregnant women and their fetuses or infants are
exposed to drugs that lack sufficient information about safe and effective use [1, 2].
Therapeutic misadventures such as the thalidomide disaster stimulated the development of pharmacovigilance systems, but these systems
do not fully serve pregnant or lactating women. The same can be concluded for product specific pregnancy registries, commonly mandated to
characterize and quantify maternal, fetal and neonatal risks post marketing. Six years after the Pregnancy and Lactation Labeling Rule was
published, the Food and Drug Administration (FDA) reported that registries commonly fail to provide relevant information, usually caused by
low enrollment. Only 7/59 (12%) registries resulted in a label update, while only 22/59 (37%) registries reported their observations in peerreviewed
journals . As a consequence, information to support decisions on pharmacotherapy during pregnancy or lactation remains very
limited. Women of childbearing potential and their health care providers have to make poorly informed decisions because pregnant or lactating
women get ill, and ill women get pregnant or prefer to breastfeed [2, 4].
In a first review, Ceulemans et al. explore perspectives of patients (women’s belief about medicines, adherence) and pharmacists (how to
communicate) on this setting . This issue subsequently focuses on various scientific approaches that can be tailored to pregnancy and lactation
in order to generate more knowledge on drug exposure and effects. This includes pharmacokinetic (PK) modelling approaches during
pregnancy and/or estimation of fetal exposure. Dallmann et al. discuss the relevance of pharmacometric tools, and highlight key elements to
tailor these tools to improve pharmacotherapy . Along the same line, Bouazza et al. provide an overview on PK approaches to evaluate
fetal drug exposure, including in vitro placental transfer studies . Such models are relevant, since PK studies in pregnant women - and especially
when related to the fetal compartment - are very difficult to conduct because only scattered information is available. Moreover, the
placenta has not only a barrier and transport function, but placental dysfunction in itself may result in maternal pre-eclampsia, caused by abnormal
placentation and involving a cascade of dysregulated pathways in placental vasculature. Studies on human placental vascular reactivity,
its variability and the mechanisms involved may therefore serve as an ex vivo model to learn more about pre-eclampsia, a disease typically
confined to pregnancy, but potentially having cardiovascular consequences in later life for both the former pregnant woman and her
Similarly, pharmacometric models are developed to quantify and predict drug exposure during lactation. This emerging research field for
infant drug exposure through human breast milk is discussed by Ito , while Ventrella et al. describe how to generate information on nonclinical
models to determine drug transfer into human breast milk. This covers both in vitro tools like trans-epithelial mammary drug transport
as well as in vivo studies in lactating animals . These observations can subsequently be integrated in physiology-based (PB)-PK models.
Since the infant ingests human milk, a subsequent link with neonatal PB-PK models is needed to turn these models into useful tools to predict
exposure in the infant [11, 12].
The next section discusses pharmacotherapeutic aspects of maternal or fetal medical conditions during pregnancy or at delivery. This
starts with a paper on novelties in postpartum hemorrhage. Data on tranexamic acid and fibrinogen concentrate in postpartum hemorrhage
were summarized by Philips et al., highlighting strengths and limitations . The full spectrum of PK, placental and breastmilk transfer of
antiretroviral drugs in pregnant and lactating women living with Human Immunodeficiency Virus (HIV) and areas in need of additional research
are discussed by Hodel et al. . This is followed by two papers on preterm delivery prevention and long-term outcome following
prenatal lung maturation, respectively. The safety and efficacy of tocolytic drugs to treat spontaneous preterm labor are reviewed by Lamont
and Jørgensen. Since the authors conclude that the perfect tocolytic drug does not yet exist, this review subsequently covers currently explored
research lines, including progesterone, prostaglandin F2α antagonists or statins, linking to another recent special issue of this journal
[15, 16]. This is followed by an overview on antenatal corticosteroids for fetal maturity, with a call for long-term pharmacovigilance. It is
well established that antenatal corticosteroids shortly before delivery reduce neonatal mortality and morbidity in neonates if born preterm.
However, long term effects are poorly understood, particularly since about 50% of women who receive antenatal corticosteroids subsequently
deliver at term . The final paper of this section describes a repurposing drug development program of sildenafil for antenatal treatment of
congenital diaphragmatic hernia. This program includes studies in animal models (rat, rabbit) and in vitro placental transfer studies to subsequently
develop a PB-PK model to support studies during pregnancy .
Obviously, pharmacological research in pregnancy and during the postpartum period can only be performed within a regulatory framework.
There is therefore an obvious need to facilitate therapeutic development by regulatory science . Roca et al. discuss the most recent FDA guidance on scientific and ethical considerations for inclusion of pregnant women in clinical trials, and the recently initiated Task Force
on Research Specific to Pregnant Women and Lactating Women (PRGLAC) . Finally, mobile health applications for prenatal assessment
and maternal-fetal monitoring are emerging as valid tools to generate knowledge, and also can be used in clinical drug registration studies
. We should avoid that this population is again ‘forgotten’ in the product development of wearable devices as new tools of data collection
in healthcare .
We hope that this special issue provides the reader with state-of-the-art reviews on various aspects of perinatal pharmacology. More relevant,
we hope that this stimulates collaboration to take the steps to shift from best guess practices to evidence-based knowledge on pharmacotherapy
for pregnant women, their fetuses and infants.
In addition to my teaching activities at the Euro Academy in Pößneck (Germany), I have been collaborating with Dr. Rafael Coveñas
(Institute of Neurosciences of Castilla and León (INCYL), Salamanca, Spain) since 2002. Our collaboration has been focused on the neural
networks involved in neurological and psychiatric diseases. In September 2004, I published my first abstract entitled “Theoretical reflections
about the reciprocal influence of neurotransmitters upon each other” that was presented in the German congress on clinical neurophysiology
(Jena). Because there is no laboratory technique to develop exactly neural networks, we use the therapeutic effects of CNS drugs exerting an
agonistic or antagonistic effect, at a specific receptor, to develop these networks. In physiological brain function, classical neurotransmitters
and neuropeptides show a transmitter balance with slight and short-time alterations of the transmitter levels. In psychiatric and neurological
diseases, transmitter imbalance occurs, for example in generalized epilepsy, Parkinson’s disease and in two important psychiatric diseases:
schizophrenia and major depression. In both latter diseases, the development of improved CNS drugs can be justified by the neural networks.
Second-generation antipsychotic drugs have made progress in treating psychotic symptoms by minimizing movement disturbance, the extrapyramidal
symptoms. Because one third of depressive patients cannot be successfully treated by available antidepressant drugs, multimodal
antidepressant drugs can improve the antidepressant pharmacotherapy. In February 2013, I presented at the 5th ICDDT conference in Dubai an
oral presentation about multimodal pharmacotherapy by examinig neural networks. Generalized epilepsy is not completely treated by available
antiepileptic drugs. The derived neural network in the hippocampus, cerebral cortex, thalamus and hypothalamus was presented in meetings
that were hold in Dubai, Salamanca and Munich. Our aim is to enlarge neural networks by considering all the involved classical neurotransmitters
and neuropeptides, in order to improve the current pharmacotherapy by using CNS drugs. In 2018, we completely improved the
neural network in the extrapyramidal system, because the anti-Parkinsonian pharmacotherapy is not yet satisfactory. As well in this neurodegenerative
disease, we suggest a multimodal pharmacotherapy.
In this special edition of the journal Current Pharmaceutical Design, the following reviews are included.
Ana Velasco from the Institute of Neurosciences of Castilla and León (Salamanca, Spain) and co-workers review the current pharmacological
treatment of multiple sclerosis . They present the pharmaceutical preparation named GEMSP, which consists of fatty acids, antioxidants,
free radical scavengers and amino acids. In first clinical studies, 72% of the patients with multiple sclerosis had a better outcome compared
to patients who did not receive this treatment. In this review, the authors show a biochemical analysis of the constituents of GEMSP.
Domenico de Beradis from the Department of Mental Health belonging to the Psychiatric Service of Diagnosis and Treatment (Teramo,
Italy) and co-workers present the involvement of glutamatergic drugs in the treatment of major depression. Most antidepressant drugs are reuptake
inhibitors of monoamines, such as serotonin, dopamine and noradrenaline. However, one third up to half of the depressive patients
cannot be treated successfully with these available antidepressant drugs . Domenico de Beradis presents NMDA (N-methyl-D-aspartate)
antagonists, for example ketamine, which produce a rapid, long-lasting antidepressant effect. Besides, the authors review new glutamatergic
drugs, which also show antidepressant properties.
Felix-Martin Werner from the Euro Akademie Pößneck and Rafael Coveñas from the Institute of Neurosciences of Castilla and León update
the alterations of neurotransmitters and neuropeptides in the brainstem and hippocampus involved in major depression . They have
previously published several reviews about the neural networks involved in major depressive disorder. They included not only monoamines
such as serotonin, dopamine and noradrenaline, but also gamma-aminobutyric acid (GABA), glutamate and neuropeptides. The neural networks
in the brain centers involved in major depression are up-dated. The mechanisms of action of new antidepressant drugs, for example
NMDA and m5Glu (subtype 5 of the metabotropic glutamatergic receptor) antagonists, neurokinin-1 receptor antagonists and M1 mACh
(muscarinic cholinergic receptor) antagonists are explained according to their therapeutic effects and to the neural networks. NMDA antagonists
combined with M1 mACh antagonists can produce a rapid and long-lasting antidepressant effect.
Felix-Martin Werner and Rafael Coveñas up-date the neural networks involved in generalized epilepsy and present novel antiepileptic
drugs . The neurotransmitter and neuropeptide alterations in the hippocampus, cerebral cortex, thalamus and hypothalamus are actualized.
In a second step, neural networks are up-dated in these brain areas. Novel antiepileptic drugs, for example an allosteric positive modulator of
the GABAB receptor, perampanel (an AMPA (alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) receptor antagonist) and brivaracetam
are described according to their mechanisms of action and therapeutic effects. It was a great pleasure working with the Director Kazim Baig and for the opportunity to publish in the journal Current Pharmaceutical
Design. It was a wonderful experience working with Editorial Assistant Aamer M. Khan at the time of submission and processing of the
manuscripts. I would like to acknowledge the contributions of others who took care of editing and processing the manuscripts to obtain the
best final quality at the time of publication.
This Thematic Issue is focused on the current progress in genetic studies, drug discovery and drug application in non-communicable
(chronic) diseases. Taken together, non-communicable diseases are the leading cause of morbidity and mortality worldwide. During the recent
years, great advances in genetic studies and the accumulating pool of available data made possible the discovery of molecular mechanisms
of a number of chronic human pathologies, investigation of genetic predispositions to various disorders, and identification of numerous
potential therapeutic targets. This progress in turn was followed by a number of preclinical and clinical trials that collected important data on
safety and efficacy of new drugs. Research articles provide numerous examples of successful development and application of drugs and gene
therapies of cardiovascular diseases, cancer, and other human pathologies. Moreover, a significant amount of data is coming from clinical
applications and molecular studies of traditional medicines. Part of these exciting findings were summarized in this Thematic Issue, which
covers the following topics.
International team of authors from Russia and China Victor G, et al. present a very interesting review “Transcriptional characteristics of
activated macrophages” discussing the results of a macrophage transcriptome study. Transcriptome analysis might reveal the exact role of
different genes in macrophage biology, which, in turn, might help in discovering new drug targets for treatment of inflammatory diseases .
In a non-systematic review “The role of genetic polymorphism in the formation of arterial hypertension, type 2 diabetes and their comorbidity”
by a Ukrainian team of authors Shalimova A, et al. the role of genetic polymorphisms in the formation of type 2 diabetes mellitus,
arterial hypertension and their comorbidity is discussed. Study of gene polymorphisms proved to be very important for diagnosis and treatment
of arterial hypertension and type 2 diabetes mellitus, yet this problem requires further research .
Accardi G, et al. (Italian group) in their review “Genotypic and phenotypic aspects of longevity: results from a Sicilian survey and implication
for the prevention and the treatment of age-related diseases” provided a detailed description of the phenomenon of longevity in the
island of Sicily and described different aspects of Sicilian population. The authors discussed social and physiological features linked to longevity
and pointed the aspects that can represent the most valuable targets for prevention and treatment of age-related diseases .
A Chinese team of authors Liu C, Sun Y, and Shao Z. in their review “Current concepts of the pathogenesis of aplastic anemia” focused
on recent research of abnormal activation of the immune system in the pathogenesis of aplastic anemia. The authors hypothesized that such
factors as genetic background, viral infection and abnormal bone marrow hematopoietic microenvironment play a role in the pathogenesis of
aplastic anemia .
A Japanise team of Shibata K, et al. in their review “Thrombolytic therapy for acute ischemic stroke: Past and future” highlighted the
pathophysiologic features of ischemic stroke, described the future of thromboembolic ischemia stroke research, and the available therapies.
The authors reviewed the current thrombolytic drugs and the available historical background .
Russian authors Gusev E. Yu and Zotova NV. made an impressive work on the analysis of hundreds of papers. In their review entitled
“Cellular stress and general pathological processes” authors discussed the involvement of cellular and tissue stress in the majority of the human
diseases through the participation in the inflammation. They elaborated on different aspects of cellular stress and discussed the possible
ways of cell and tissue stress therapy .
Kim DV, Makarova AV, Miftakhova RR, and Zharkov DO. (a Russian group) in their review “Base excision DNA repair deficient cells:
From disease models to genotoxicity sensors” discussed the current knowledge on the base excision DNA repair pathway. Furthermore, the
authors briefly described the current state of the ongoing study on BER-deficient cell lines and their use for genetic toxicology needs .
Yamagishi S, et al. (a Japanese team of authors) in their review “Therapeutic potential of pigment epithelium-derived factor in cancer”
focused on pigment epithelium-derived factor and its role in the pathology of diverse types of cancer. Moreover, the authors discussed the
therapeutic perspectives of using the pigment epithelium-derived factor for the treatment of cancer .
The review paper “Treatments for iron deficiency (ID): Prospective organic iron fortification” by D. Wan, Q. Wu, H. Ni, G. Liu, Z. Ruan,
and Y. Yin from China focuses on the problem of iron deficiency and discusses iron bioavailability and iron supplement therapies .
Shahcheraghi SH, et al. from Iran present the review “Therapeutic potential of curcumin in the treatment of glioblastoma multiforme”.
The authors focus on the problem of glioblastoma multiforme treatment. The recent observations on the therapeutic effects of curcumin
against glioblastoma are considered, as well as the combination therapy with chemotherapeutics .
An international team of authors from China and the US Guo H-L, et al. in their review “Valproic acid and the liver injury in patients
with epilepsy: an update” summarize the data regarding the side effects of valproic acid administration in epileptic patients. The valproic
acid-induced hepatotoxicity mechanisms are also explained .
Sedighi M, et al. an international team of authors from Iran and the UK) in their review “A review of the most important medicinal plants
effective on cardiac ischemia-reperfusion injury” discussed the current state of research and treatment of ischemic disease. Moreover, the
authors give a broad overview of potential medicinal plants effective on ischemia .
Wang S-J, et al. from China and the UK in their review “Prunella vulgaris: A comprehensive review of chemical constituents, pharmacological
effects and clinical applications” analyze the chemical constituents, clinical applications, and pharmacological activities of Prunella
Thus, in this special issue, several teams of international experts discussed the most novel topics relating to the problem of drug target
discovery and treatment of non-communicable diseases. We would like to thank the contributors to this issue for their participation. We hope
that this issue will be valuable for the readers.
Drug delivery systems are or increasing interest in medicine because can assure targeted, optimized release of the desired biological active
agent and can reduce or even avoid systemic toxicity. In most of these cases, triggering factors can assure smart delivery at the desired
situs and with the desired rate. For instance, pH, temperature, enzyme, magnetic field, light, etc. can act as triggering factors, these drug delivery
systems being suitable for the treatment of cancer, infections, hepatitis C, neurodegenerative diseases, inflammations or other diseases.
Drug delivery systems can be useful for the administration of various drugs, drug delivery systems are especially important for the administration
of toxic drugs, such as cytostatics, antibiotics or when the drugs should be administered for a longer period of time and is important to
maintain a certain concentration [1-11].
The current special issue is especially focused on presenting some of the most important and recent advances in the field of drug delivery
systems based on organic and inorganic materials (such as metal nanoparticles, oxides, polymeric vesicles, carbon-based materials, composite
and hybrid materials, etc.) with a focus on the treatment of cancer, diabetes, rheumatoid arthritis, diseases associated with colon (such as
Crohn’s disease, ulcerative colitis, colon cancer), infections, thyroid disfunctions, etc. Certainly, the treatment of these diseases requires different
biological active agents, both synthetic and natural agents being effective and highlighting advantages and disadvantages.
Most of the manuscripts are mainly related to the treatment of certain diseases while two of them are focusing on the potential therapeutic
activity of some extracellular vesicles and respectively to the exploiting of natural bioactive agents derived from walnut. Due to many reasons,
cancer therapy by using drug delivery systems are of great importance and two papers are fully dedicated to this purpose while two of
the papers are partially devoted to this topic. Also, it is important to mention that even topics such as drug delivery systems for diabetes or
inflammation are presented, such topics being not so well reviewed in the scientific literature.
Aruda et al.  present the potential benefits and highlights the necessity to use cardio-protective agents when doxorubicin is used in
cancer treatment. It is important to mention that even if important improvements were obtained in the field cancer treatment, the survival rate
increasing considerably in the last decades, especially after the development of cisplatin and its FDA approval nowadays a special attention is
paid to a better administration and reduced toxicity [13, 14].
Croitoru et al.  made an overview of the biological active agents available in the walnut, their therapeutic activity as well as the current
state of the art associated with the drug delivery systems developed starting from these agents. Organic, inorganic as well as composite
support materials were considered in this review while the drug delivery systems became efficient for antioxidant, antibacterial, antitumor
activity and many other pharmacological and medical applications.
Surman et al.  focused their extensive review to highlight the importance of the extracellular vesicles as drug delivery systems for
potentials biomedical applications such as: cancer, hepatitis C, neurodegenerative diseases, inflammations, etc. According to their manuscript,
some of the main factors inducing the effectiveness of the drug delivery systems are related to the chemical stability in the circulation and
intracellular space and the ability to reach and internalize into the target tissues/organs and cells. Also, many other advantages of using
biomimetic vesicles are also highlighted but, certainly, numerous challenges are still to be undertaken.
Stimuli responsive drug delivery systems are also applied in the treatment of different diseases, including rheumatoid arthritis . According
to this study, the need of developing new drug delivery systems should be considered, these new drug delivery systems should accomplish
some general and specific criteria such as biocompatibility, safe, stable in blood circulation, bioaccumulation and targeted, fast delivery
in arthritic tissue while the degradation products of the support could further support the cartilage and bone healing.
Diabetes also attract the interest of the researchers because an increasing number of patients is diagnosed year by year. The conventional
administration of insulin is problematic, and therefore new administration routes are desired, drug delivery systems conferring some important
challenges for this purpose . Zaric et al.  present the challenges in the field of diabetes treatment. Subcutaneous, buccal, ocular,
pulmonary, ileum and colon, nasal, vaginal or rectal insulin delivery systems are described from the point of view of current state of the art
but especially highlighting the new trends assured by the evolution of the nanotechnology.
Over the past years, Inflammatory Bowel Disease (IBD), has become one of the most innovative chapters in Gastroenterology. Not only
because its frequency has been exponentially rising worldwide, but mainly due to a great improvement on the knowledge about the diversity
of immunologic mechanisms, leading to multiple inflammatory pathways, involved in the physiopathology of the disease, thus, making it
possible to develop novel drugs targeting several steps of this “spider web”. Moreover, IBD is of great interest because of its impact on the
quality of life of affected individuals, as they are mostly at a young and productive age, requiring a global approach and close monitoring,
intended to improve quality of life, prevent disease progression and disability, and disease-related costs. It is with great pleasure that we conclude
this special team work, with collaboration of many dedicated professionals who made the effort to provide such a complete issue on the
Novel Targets For Therapeutic Intervention in Inflammatory Bowel Disease.
In this issue Argollo et al.  and Lakatos et al. , approach interesting topics on biosimilars in IBD. The first chapter describes, in a
very academic manner, the equivalence in clinical efficacy of adalimumab-biosimilars questioning the importance of defining the ideal patient’s
profile to receive or to be switched to a biosimilar, choosing one biosimilar vs. another, or cross-switching among biosimilars, which
they considered the next challenge in IBD. The second chapter also describes available data on the efficacy and safety profile of infliximab
biosimilars, and more, authors add that from a financial point of view, the use of biosimilars could lead to substantial cost savings and ultimately
wider access to biological therapies.
The review of D’amico and co-workers  analyses the mechanism of action of anti-adhesion molecules and nicely expose results from
pivotal trials on the efficacy and safety profile of this class of drugs on the management of IBD. Authors suggest that gut specificity is pivotal
to reduce adverse events and increase efficacy.
An overview on interleukin (IL)-23 blockage for the treatment of CD by Argollo et al.  confirm the role of IL-23 as a key mediator in
chronic intestinal inflammation and suggest the potential benefit of this class of drugs as promising alternatives in the treatment of Crohn’s
disease and ulcerative colitis.
Panes and co-workers  present a clear summary of all available data on the efficacy and safety of the novel class of small molecules
inhibiting the Janus Kinase pathway, as a potential alternative approach for the treatment of IBD patients, in addition to their intrinsic characteristics
making them an attractive option based on their oral administration, short plasma half-life, lack of immunogenicity and predictable
Kotze and colleagues  brilliantly discuss the management of complex perianal fistulas in Crohn’s with the use of mesenchymal stem
cells (MSCs), as an emerging new therapeutic strategy, summarizing the evidence of MSCs in complex CD fistulas, exploring in detail the
various types of cells that can be used and their modes of delivery.
The review entitled “Anti-fibrotic drugs for Crohn’s disease: Ready for prime time?”  is focused on intestinal fibrosis in CD and gives
a complete explanation on the mechanisms involved in intestinal inflammation vs. intestinal fibrosis, suggesting this topic as the novel potential
target for future research in the IBD field.
With the emergence of biologic therapies many adverse events have been detected. The article by Yzet et al.  review how to best assess
the safety parameters of new IBD medications, from the earliest stage of development to population-based registries, with a focus on the special
populations often excluded from the evaluation process.
This review by Lindholm CR and Siegel CA  discuss biomarkers, current prognosticating tools, and tools that determine response to
therapy and question if incorporating these into clinical trials will bring real benefit for the management of IBD patients.
Last but not least, a key chapter in the IBD field is presented by Dan Turner  and express the importance of recruiting pediatric patients
to participate in clinical trials and offers possible solutions to age-specific pitfalls in performing trials in this specific population.
As executive guest editors, we had the honor to work with a great team of experts and young promising leaders in the IBD field and
would like to thank all of them for their dedication and compromise to conclude an excellent work. In addition, we would kindly thank and
acknowledge the group of experts and dear colleagues who offered their substantial reviewing efforts and suggestions. Finally, we would like
to express our ad- miration to the Bentham Science Publishers for recognizing and honoring the importance of high level publication in the
IBD field. The nice team of professionals, especially Director Kazim Baig and Editorial Assistant Aamer M. Khan, made this experience possible and turned initial ideas into a very special issue, giving us all the support provided. We would also like to express our gratitude to all
the contributions that took care of editing and processing the manuscripts that resulted in high quality material at the time of publication.
Mineralocorticoid receptor antagonists (MRAs) were initially introduced six decades ago, when spironolactone, a first generation nonselective
MRA was developed . MRAs were immediately placed at the epicenter of cardiovascular medicine, mainly, due to their blood
pressure lowering effects. Thereafter, a great scientific effort lead to a thorough evaluation of such agents, resulting in a stable evolve of this
category of drugs, as well as in vast clinical experience. Recently, MRAs emerged at the epicenter of scientific interest after the approval of
finerone (a third generation, non-steroidal MRA), and the development of novel hypokalemic agents [2-6].
Nowadays, all the abovementioned scientific efforts have provided three generations of MRAs, along with a well-established benefit in
several crucial cardiovascular comorbidities and life expectancy, featuring a quite useful option in the armamentarium of physicians in everyday
clinical practice. More specific, MRAs are currently considered as a second-line drug for the management of arterial hypertension, while
they portrait the most efficacious add-on therapy for the management of drug resistant arterial hypertension [7-9]. Moreover, MRAs are the
gold-standard therapy in patients with bilateral primary aldosteronism . Accumulating data suggests that both spironolactone and eplerenone
result in amelioration of mortality outcomes in patients with heart failure with reduced ejection fraction, and left ventricular dysfunction
after myocardial infarction [11-16]. Furthermore, MRAs are indicated for the management of albuminuria in concomitant administration
with renin-angiotensin system blockers [17, 18].
Altogether, MRAs are ascertained as a fundamental class of drugs for the multifactorial management of patients with cardiovascular disease;
however, their usage remains quite restricted. The point behind this fact lies in the potential life-threatening side effects of such agents,
as hyperkalemia and acute kidney injury. In this end, the recently developed third generation, more selective, and non-steroidal MRAs seem
to offer a substantial cardiorenal protection with a parallel promising safety in terms of the abovementioned side effects [19-27].
In the current special issue published by the Current Pharmaceutical Design, we sought to: a) highlight the pleiotropic effects of MRAs in
the management of cardiovascular risk, b) critically discuss clinically meaningful aspects and to conclude in useful tips for everyday clinical
practice, c) present novel perspectives with the introduction of more selective agents, such as the lately approved finerenone, d) discuss new
perspectives about the safety of these agents with the use of new hypokalemic agents, e) suggest clinically meaningful implications for physicians,
and f) underline the major aspects for further evaluation in the upcoming randomized controlled clinical trials.
In this end, Professor Lovic and co-authors drafted a review article to thoroughly present the impact of mineralocorticoid receptors on the
progression of cardiovascular disease, as well as the pathophysiological role of MRAs in the management of such deterioration . Professor
Faselis et al discussed about the effects of MRAs in the management of essential hypertension, while they innovatively present data on the
use of MRAs in resistant hypertension compared with other second-line antihypertensive agents, and of major interest versus renal sympathetic
denervation . Professor Doumas and colleagues highlight the most important clinical aspects and future perspectives in the management
of primary aldosteronism with such agents . Prof Papademetriou and co-authors provide state of the art evidence and summarize
future perspectives of the MRAs in the management of heart failure with reduced ejection fraction . Likewise, Professor Tziomalos et al
present data assessing the impact of these agents on heart failure with preserved ejection fraction . Moreover, Professor Sarafidis and
associates conducted a very useful review article on the role of MRAs in the treatment of chronic kidney disease and albuminuria, focusing on
the new advantages by the development of the third-generation MRAs and novel hypokalemic agents . Prof Manolis and colleagues conducted
an interesting review on the MRAs side effects, providing significant guidance for the prevention and management of such events
. Professor Karagiannis et al innovatively present all the new perspectives on the potential wider use of MRAs, secondary tothe development
of new hypokalemic agents; namely zirconium, and patiromer . Last but not least, Professor Tsioufis and colleagues investigated the
future perspectives with the ongoing evaluation of the third generation, non-steroidal MRAs, unveiling significant aspects that need to be
further investigated in future randomized controlled trials .
This Thematic Issue summarizes the current progress in the development of organ-on-chips for pre-clinical drug screening and personalized
medicine research. In the past five decade, the advantages of organs-on-chips over conventional three-dimensional (2D) or threedimensional
(3D) cell culture systems and animal models have attracted more and more interest of physicians and pharmaceutic scientists .
To make a precisely controlled and biomimetic microenvironment in vitro, an organ-on-a-chip technology showed the potential for recapitulating
human physiological environment. Additionally, rapid development in tissue engineering and stem cell researches also advances the
fabrication techniques of biomimetic organs and in vitro diseases chip models for use in drug screening and personalized medicine .
Organ-on-a-chip technology has been used to fabricate the minimized functional organ-based systems with the physical, cellular and biochemical
microenvironments to mimic native organs such as lung, kidney, heart, blood vessels and others . Therefore, an artificial bottomup
approach is frequently used to build organ-on-a-chip with progressive complexity by exploitation of cellular differentiation, self-assembly
or cell-cell interactions to recapitulate native physiological features . Additionally, for disease modeling, patient-derived cells can bypass
significant intra-species differences between humans and animals . Based on these information, patient-tailored disease-on-a-chip models
enables development of personalized medicine for the generation of more reliable efficient individual compound screening outcomes and
Aizheng Chen and his co-workers emphasized the microfluidic models based organ-on-a-chip platforms . They gave a brief overview
of the limitations associated with the current drug development pipeline that include drug screening methods, in vitro molecular assays, cell
culture platforms and in vivo models. Further, they discussed various organ-on-a-chip platforms, highlighting their benefits and performance
in the preclinical stages. Next, they also emphasized their current applications toward pharmaceutical benefits including the drug screening as
well as toxicity testing, and advances in personalized precision medicine as well as potential challenges for their commercialization.
Yu Shrike Zhang et al. reviewed the current strategies, including the bioprinting and microfabrication technologies, that allow for fabrication
of blood vessel-on-a-chip . In addition, the diseased vascular states, such as thrombosis, may also be modeled by integrating cues that
simulate the microenvironment of vascular disorders. These engineering technologies for development of biomimetic in vitro vascular structures
will potentially offer a new strategy to study complex endovascular intervention problems which are hard to address via existing models.
In Ning Hu and co-workers’ review, they introduced the heart-on-a-chip in the sensor-free or sensor-based strategy, and illustrated the
advantages of sensor-based heart-on-a-chip in details by taking the examples of the recent studies . They also provided a perspective on the
integration of the organ-on-a-chip technology and biosensor platform.
Ali A and his co-workers discussed lung-on-a-chip models that combine the technologies of bioengineering, microbiology, polymer science,
and microfluidics disciplines to mimic physicochemical features, microenvironments, and cell-cell interfaces of a human lung . Specifically,
they further analyzed in detail the recent state of the construction steps, advantages, prospect of art technology for usage in lung-ona-
chip models and diseases.
Weitao Jia and his colleagues focus on the recent advances of microfluidic techniques that have been applied in the field of orthopedic
tissue engineering . After an extensive literature search, they discussed the culture of osteocyte cells and chondrocytes on the microfluidic
platforms. Moreover, the incubation and studying of bone metastasis models in microfluidic platforms were also discussed in their review
Lee I-Chi gave an overview of the innovations, development and limitations of tumor-on-a-chip . They described the combination of
3D tumor-like organoid and microfluidic techniques to achieve in vitro models for mimicking tumor microenvironment and chemotherapy
drug screening. Furthermore, they discussed the developmental directions and technical challenges in the tumor-on-a-chip field. They demonstrated
that tumor-on-a-chip models could offer a better sufficient clinical predictive power and would bridge the gap between proof-ofconcept
studies and a wider implementation within the drug development for pathophysiological applications.
Yi-Chen Ethan Li and his co-workers reviewed the fundamental strategies adopted for brain-on-a-chip devices fabrication including photolithography,
micromachining, and 3D printing technology . Then, they discussed the state-of-the-art of brain-on-a-chip platforms including
their role in the study of the functional brain architecture such as blood-brain barrier and neurodegenerative diseases like Alzheimer’s
and Parkinson’s disease. Furthermore, they also discussed the current limitations and future perspectives of the brain-on-a-chip platforms for
the development of new drugs and neurodegenerative diseases modeling.
Ayca Bal Ozturk and her colleagues focused on the contribution of skin-on-chip platforms in fundamental and applied medical researches
. In addition, they also highlighted the technical and practical difficulties needed to be overcome for improving the current skin-on-chip
platforms, for example, embedding electrical measurements or an improved modeling of human diseases as well as of new drug discovery
Junmok Seo and his colleagues reviewed current trends in screening platform such as a high-throughput system composed of engineered
microarray devices for investigating cell-biomaterial interactions . Furthermore, they provided versatile methods to achieve a continual
monitoring of cell behaviors via integration of biosensors and high-throughput platforms. Consequently, the future perspectives of highthroughput
screening platforms is also discussed.
Su Ryon Shin et al. discussed the role of the body-on-chips in overall drug discovery process at preclinical and clinical stage, as well as
outline remaining challenges . They discussed the combination of multiple organs-on-chips to explore their crosstalk in the drug metabolism.
In conclusion, in this special issue, a team consisted of the international experts from different research areas discuss the existing challenges
and the most novel development of organ-on-a-chip. We would like to thank the contributors to this issue for their participation. We
hope that this issue will be helpful for the development of novel drug screening and personalized medicine.
This thematic issue on redox regulation and cancer therapy summarizes current information on the role of redox regulation in cancer therapy.
Although some important aspects of novel approaches to cancer therapy are covered, some of them such as development of resistance
against certain drugs or generation of metastatic processes are missing. Redox regulation includes important mechanisms for cellular homeostasis
that are involved in the treatment of many diseases and recent research in redox biology aims at manipulating the redox balance to increase
its translational potential [1, 2]. However, in contrast to popular belief and early work done on the subject, recent knowledge suggests
that reactive oxygen and nitrogen species (ROS and RNS) are not only harmful for the cell but also have important roles as signaling molecules
. Thus, our cells have different ways of coordinating and regulating ROS generation/elimination. This is essential for vitality of both
cells and the organisms. When different approaches are used against a particular disease, targeting redox regulation and ROS at specific time
points and locations is essential so that only diseased cells will be affected. This has recently been possible by use of targeted antioxidants
which scavenge ROS at specific sites . Thus, under physiological conditions redox homeostasis can be achieved by careful control of production
and elimination. In cancer therapy, reactive species may influence redox homeostasis and promote tumor formation by initiating an
aberrant induction of signaling networks causing tumorigenesis. One must not forget that although modulation of reactive species has promising
anti-cancer therapy potential, redox regulation is at the same time a double-edged sword for cancer progression and therapy. In this aspect,
ROS and RNS are important tools as signaling molecules but they can turn to be cytotoxic if present at wrong locations and in high
amounts. Oxidative stress results from an imbalance in the production of reactive oxygen species (ROS) and antioxidant defenses of the cells,
and is implicated in the etiology of cancer . However, ROS may also deregulate the redox homeostasis and promote tumor formation by
initiating an aberrant induction of signaling networks that cause tumorigenesis. Cancer stem cells may then take the advantage of the aberrant
redox system and spontaneously proliferate. It has been shown that oxidative stress and gene-environment interactions play a significant role
in the development of breast, prostate, pancreatic and colon cancer. Therefore, manipulating ROS metabolism and ROS dependent pathways
may be an effective approach for supporting cancer treatment . The authors of the reviews published in this issue have considered different
aspects of the developments and problems encountered in redox regulation and cancer therapy. Some of the approaches presented in the reviews
have already found application in clinical practice. But others need to be improved and more information is needed in the near future
for their therapeutic use. In their review on the role of antioxidants in cancer, Poljsak and Milisav  indicate that antioxidants are able to
decrease the risk of cancer formation by quenching ROS. But there is also evidence showing that antioxidants assist survival of cancer cells
after malignant transformation. Antioxidants have roles in cancer initiation, they may interfere with cancer treatment and may also be beneficial
during cancer treatment. In the second review, Schröter and Höhn  discussed the role of advanced glycation end-products (AGEs) in
carcinogenesis and their therapeutic implications. They note that aging is one of the main risk factors for major prevalent diseases such as
cardiovascular diseases, neurodegeneration and cancer. However, due to the complex and multifactorial nature of the aging process the molecular
mechanisms underlying age-related diseases are not fully deciphered. AGEs significantly increase inflammation in the body which has
long been associated with the development of cancer. The involvement of redox regulation in cancer therapy and use of proteasome inhibitors
is reviewed by Kaplan, Okat, Sahin and Karademir . As already discussed, redox homeostasis is an important process for the maintenance
of cell survival. The redox system works in balance under physiological conditions and involves activation of many different signaling molecules.
Proteasomal system is crucial in the regulation of these signaling molecules. Many proteasome targeting molecules have been developed
over the years and some of them are already being used in the clinic for cancer treatment. In the final review of this mini-thematic issue,
Manda et al.  have discussed redox networks in oncologic photodynamic therapy (PDT). PDT is a promising anti-cancer therapy modality
that is based on a provoked singlet oxygen burst. It exhibits a better toxicological profile than chemo- and radiotherapy. Important gaps in the
knowledge on molecular mechanisms underlining PDT impedes on its translation towards clinical applications in cancer. The authors have
critically analyzed the present knowledge on redox networks underlining PDT and its outcome(s) related to cancer cell death as well as resistance
to therapy. They have also presented the transcription factor NRF2 as a promising pharmacologic target for developing co-therapies
designed to increase the efficacy of PDT.
Drug delivery deals with the methods or processes of administering drug(s) for enhanced efficacy and safety . The science of drug
delivery has revolutionized the healthcare system and a variety of nanotechnology-based products are now available in market all over the
globe . It is being estimated that the market for novel drug delivery systems would rise to $ 178 billion by the year 2019 . Looking into
the increasing research in this domain and numerous success stories, along with the commercial potential, the present thematic issue on
Nanotechnology-based Drug Delivery Products: Need, Design, Pharmacokinetics and Regulations has been planned. This issue covers the
vital aspects of the science of drug delivery in an updated manner.
The historical aspects, need, classification, basic formulation approaches and success stories of drug delivery systems is presented in the
first manuscript authored by Modgil et al. This manuscript beautifully also explains the pros and cons of various drug delivery carriers in a
succinct manner . Variety of topical drug delivery carriers with an emphasis on dermal pharmacokinetics specially designed for infectious
diseases have been discussed by Katare et al. in the second manuscript of the issue . The contribution by Chandasana et al., explores and
explain the utility of nanocrystals as a tool in drug delivery . The challenges and advancements in the ticklish protein and peptide drug
delivery have been explained in the review article submitted by Babu et al. , whereas as the nanotechnology-based drug delivery of next
generation peptide nucleic acids has been presented by Bahal et al. . The concept and advances in the pharmacokinetic modeling with a
special emphasis on the nanocarriers have been covered by Mukker and Singh . Mahmood et al. contributed a manuscript dedicated to
nanocosmetics and nanocosmeceuticals with a special consideration to gallic acid . An advanced account on the material aspects of the
nanodrug delivery, especially the materials from the biological origin has been presented by Singh et al. . Grushevskaya and Krylova
came up with a fascinating account on the carbon nanotubes, the inherited potentials and promises, and the usefulness of these inorganic
nanoconstructs in the delivery of anticancer quinones . The regulatory aspects of the nanomedicine in the present global perspective have
been updated by Garg et al. . This thematic issue will assist the formulation scientist and the researchers in the allied domains to advance
the know-how and subsequent apply the same in the design and development of safer and effective nanocarriers in a federal compliant manner.
The introduction of three-dimensional (3D) printing technology to the pharmaceutical sector has the potential to cause a paradigm shift in
how medicines are designed, formulated, manufactured and used by the end consumer. The interest in the 3D printing in pharmaceutical field
has grown substantially since the Food and Drug Administration (FDA) approval of the first 3D printed drug Spritam® (levetiracetam) in 2015
. 3D printing technique is an additive manufacturing method whereby successive layers of material deposited/solidified to form a 3D object.
Three major 3D printing techniques (such as laser-based writing systems, printing-based inkjet systems and nozzle-based deposition
systems) were exploited to design pharmaceutical product and its various applications in drug delivery .
Laser-based writing system, also termed stereolithography is a system, which utilizes laser and based on the technology of UV laser for
photo-polymerization of liquid polymer plastic resin. Consequently, the resin is polymerized and superimposed layers of the solid resin are
built by repeating the process over and again to obtain desired 3D structure. As there is a strict requirement of biocompatible resin for drug
delivery system, the choices are limited. The most suitable choice is low molecular weight polyacrylate polymers. Inkjet printing is a digital
system capable of controlling, generating and depositing small droplets on a selected substrate . Inkjet technology can either be continuous
(continuous inkjet printing or CIJ) having continuous jetstream of droplets or drop-on-demand (DOD) letting stream in response to a trigger
signal. Here, the droplet behavior is affected by inertia, surface tension and viscosity of the liquid.In case of 3D printing, the powder-bed
technologies have been mainly utilized for inkjet printing where droplets bind to a powder base to form layer over layer and give a 3D construct.
The power bed technology delivers high resolution prints. However, the powder bed layers undergo rapid solidification that is a major
disadvantage. Further, there is issue of compliance of entire formulation with jetted liquid. There is another technology based on nozzle extrusion
of solid components to form 3D layered structure [4,5]. The nozzle system can have Fused Deposition Modeling (FDM) or Pressure-
Assisted Microsyringe (PAM) also called semisolid extrusion (SSE) . While the former extrudes filaments of melted solids, the latter uses
pressure to extrude paste. FDM can only utilize thermoplastic components and there are chances of drug degradation at high temperatures.
Even for the thermostable products, the high drug loading is challenge. Further, the biocompatible/biodegradable polymers that are printable
with FDM for drug delivery are limitation. On the other hand, PAM technology is being increasingly utilized for the development of drug
delivery systems. It has the advantage of compatibility with a variety of pharmaceutical excipients. It can provide a continuous flow of such
excipients at room temperature. PAM-based 3D printing can serve as an important tool in design and development of high drug loaded formulation
utilizing various pharmaceutical excipients. The advantages particularly with adaptability in the pharmaceutical field have enabled the
development of 3D printed dosage forms with novel designs and geometries, multiple payloads, customized drug release as well as customized
dose and personalized medicine [6-8].
Thus, this thematic issue presents a concise yet very focus discussion to guide the researchers to know about advancement in 3D printing
technology based drug delivery and use of this novel technique in pharmaceutical product development. The inter-individual variability observed
in population pharmacodynamics due to differing metabolic efficiencies and other factors is a global concern in the pharmacotherapy.
In such cases, empirical methods are widely used for adjusting doses. However, there are high chances of undesirable side effects with empirical
methods. The advent of 3D printed formulations as a tool for personalized therapy based on individual needs and requirements has
been an important discovery. It can take into account not only pharmacogenetics and pharmacokinetic factors but also consider co-morbidity
as well. Therefore, this pragmatic tool can be exploited for designing customized drug delivery systems to achieve personalized treatments.
Indeed, an insight into the technical challenges facing the various 3D printing techniques (such as the formulation and processing parameters)
is need to be identified and addressed. In addition, the different regulatory challenges that need to be surmounted for 3D printing to fulfill its
real potential in the pharmaceutical manufacturing and drug delivery application. This special issue is dedicated to the use of 3D printing
technology for pharmaceutical product development as well as drug delivery application.
Warsi MH et al, have discussed in detail about the various 3D printing method for pharmaceuticals along with product development opportunity
and related challenges . Another author, El Aita I et al, have provided a comprehensive overview of the different 3D printing
techniques for pharmaceutical applications, including information about the required material along with advantages and disadvantages of the
respective technique . Moreover, Jain A et al, have discussed about the various polymers utilized to fabricate 3D printed pharmaceuticals
including their processing consideration, and challenges in fabrication of high throughput 3D printing based drug delivery systems . Another
contributor to this special issue, Algahtani MS et al, have highlighted specifically the extrusion-based 3D printing method to produce a
novel dosage form with properties that are difficult to achieve using the conventional industrial methods . However, Ameeduzzafar et al,
have highlighted how product and process understanding can facilitate the development of a control strategy for various 3D printing techniques
in design of various pharmaceutical products . Similarly, Zeeshan F et al, have provided the in-depth discussion regarding the use
of 3-D printing technology in the fabrication of tablets, polypills, implants, solutions, nanoparticles as well as targeted and topical dug delivery
device . Another author, Alam MS et al, have also provided a comprehensive overview of the use of 3D printing technology for the
development of novel drug delivery system . In the continuation, another contributor of this thematic issue, Kotta S et al, have highlighted
the recent progress in 3D printing technology for various drug delivery application. Authors summarized the applications of 3D printing technology
in personalized drug dosing, complex drug-release profiles, 3D printed polypills, personalized topical treatment devices, novel dosage
forms as well as drug delivery devices . Khan FA et al have discussed about the current state of the art of 3D printing in pharmaceuticals
as well as highlighted the use of 3D printing technique to develop a truly customized drug delivery system . In addition, Afsana et al,
have highlighted the application of 3D printing technology to develop personalized medicines which could play vital role in treatment of life
threatening diseases. Author further discussed about the 3D printing based personalized drug delivery system that could be investigated in
chemotherapy of cancer patients with added advantage of reduction in adverse effects . The contribution to this special issue by Haque S
et al, have provided the detail applications of 3D printing technique in pulmonary drug delivery and treatment of various respiratory disorders.
Authors have further extend their discussion on how 3D printing technique can be used to deconstruct the complex anatomy of the lungs
and improve understanding of its physiological mechanisms, cell interactions and disease pathophysiology . Mirza MA et al, have discussed
about the regulatory perspective of 3D printing in pharmaceuticals. Author further highlighted that the current situation demands concerted and cautious efforts to bring in foolproof regulatory guidelines which would ultimately lead to the success of this revolutionary technology
in pharmaceutical sector .
As a closing remark, we would like to thank Kazim Baig and complete Publications team of Bentham Science Publishers. Further, we
would like to acknowledge the support of reviewers in conducting timely peer review. Thus, as a result of the collective efforts of all experts,
we are able to bring up valuable scientific information in the area of 3D printing technology for pharmaceuticals.
A growing understanding of the roles of different chemical agents in treatment of retinal diseases has led to remarkable progress in ophthalmology
in recent years. Retinal pharmacotherapies is an enlarging field covering distinct medicines and different disorders, including
neovascular age-related macular degeneration (AMD), myopic choroidal neovascularization, central serous chorioretinopathy (CSC), choroidal
neovascularization (CNV) due to uncommon causes, vitreomacular traction, diabetic retinopathy (DR), postsurgical cystoid macular
edema (PCME), and pharmacological adjuncts to vitrectomy surgery. Nowadays many of these disorders, at least in some patients, are controllable
with pharmacological treatment. Several therapeutic strategies for retinal diseases are based on vascular endothelial growth factor
(VEGF) inhibitors, drugs well known and present in ophthalmology for about 15 years. Anti-VEGF therapy brought a breakthrough to the
treatment of CNV in different diseases. Currently in the United States of America and in some European countries the number of annual anti-
VEGF intravitreal injections has exceeded the number of cataract surgeries [1,2].
This theme issue provides an overview on the main developments in pharmacology of retinal diseases. Savastano et al. present pharmacological
adjuncts to vitrectomy surgery, which may bring benefits before, during and after the surgery . Isildak et al. discuss pharmacotherapy
of myopic CNV, in which anti-VEGF agents the mainstay of treatment . The review by Moisseiev and Loewenstein discusses
novel pharmacotherapy for neovascular AMD beyond currently available anti-VEGF agents . Iacono et al. present in detail the contemporary
treatment approaches to chronic CSC .
Wan and associates discuss the pharmacotherapy of vitreomacular traction, which occurs due to incomplete or anomalous posterior vitreous
detachment . Ho and Lai review the pharmacotherapy for CNV due to uncommon causes, including uveitis, angioid streaks, intraocular
tumors, hereditary chorioretinal dystrophies, or of idiopathic origin .
Grzybowski & Kanclerz analyze the role of corticosteroids and nonsteroidal anti-inflammatory drugs in the prevention and treatment of
PCME, which remains one of the most common vision threatening complications of cataract surgery . Villegas & Schwartz in their review
present current and future pharmacologic therapies for DR, which is the leading cause of permanent visual loss in working-age adults in industrialized
This issue seeks to review the current understanding of retinal pharmacotherapies and to provide some insights into future areas of research.
Our planet was formed as a condensed mass of cosmic debris about 4.5 billion years ago; it had a primitive ocean, an atmosphere, clime
and a recurrent cataclysmic process. This cyclic and apparently endless inferno progressively became more suitable for life, albeit a life without
oxygen. Oxygen imposed its presence on the Earth primarily as a result of the disruption of water (H2O) into hydrogen (H2) and oxygen
(O2) mediated by solar radiation; later through a more sophisticated mechanism; oxygen became abundant as a byproduct of the photosynthetic
process . The presence of oxygen on earth implied a mass extinction of anaerobic species. The role of oxidative stress on biological
systems; important organic functions, and the origin and developments of chronic diseases are discussed in this special issue of Current
Pharmaceutical Design entitled “Oxidative Stress: an update on its controversial relationship with organic functions”.
Galvez Cabezas et al.  focused their work on atherosclerosis, the major underlying mechanism driving the onset and maintenance of
cardiovascular diseases; taking into consideration the role of oxidative stress in this process. This paper correlates cell damage caused by
oxidative stress to atheromatous plaque formation, as well as an in-depth analysis of high-density lipoproteins. The paper also explores the
role of enzymatic and non-enzymatic antioxidants on atherosclerosis prevention and their failure to reverse this process.
Kumar et al.  have emphasized in aging and neurodegenerative diseases caused by excess of oxidative stress, explaining all the effects
of telomere shortening and the pathways of neurodegeneration as well as neuropsychiatric diseases. This paper also reviews the effect of lifestyle
change and activation of antioxidant pathways.
Tangvarasittichai et al.  present the consequence of excessive oxidative stress in the physiology and function of the eyes. Oxidative
stress induced ocular cells/tissues changes such as ECM accumulation, cell dysfunction, cell death, advanced senescence, disarrangement or
rearrangement of the cytoskeleton and release of inflammatory cytokines. Increased inflammation may be a critical contributor of the development
of Diabetic Retinopathy (DR).
Gangaraju et al.  focused on the integrity of the blood retinal barrier (BRB) and its role on retinal cellular function and accurate vision.
The paper reviews the effect of oxidative stress in relationship to endothelial activation in retinal diseases and BRB condition.
Romá-Mateo et al.  have dedicated their work to the influence of oxidative stress at the epigenetic level, in the unleashing of progeroid
syndromes in which cell senescence, oxidative stress and epigenetic mechanisms are severely impaired and the current pharmacological approaches
that either target or use oxidative stress-related factors or epigenetic regulators as strategies for disease treatment.
Cancer is a major cause death worldwide and their etiology of cancer is related in part by genetic inheritance, but mostly by environmental
causes where oxidative stress plays a fundamental role. That is the topic developed by Klaunig  which discussed the importance of
single nuclear polymorphisms for oxidative DNA repair and enzymatic antioxidants in determining potential human cancer risk role.
Pinheiro Ferreira et al.  bring a study of the effects of sulforaphane on prostate cancer. This compound displays antioxidative,
chemopreventive and antitumor properties; sulforaphene has been isolated from cruciferous plants. Often plants suffer from “excess
respiration” and produce numerous compounds with similar properties like sulforaphane.
The kidneys has a key function in organisms: to maintain plasma homeostasis by filtering plasma and reabsorbing other compounds essential
for life maintenance in a highly active transmembrane consuming process. This process is presented by Coppolino et al.  were they
highlight the link between kidney and oxidative stress accruing evidences that pints to the kidney as a fundamental organ in reactive oxygen
species (ROS) production.
Fritsch Neves et al.  paid attention to ROS as a common mechanism for endothelial dysfunction, vascular inflammation and arterial
stiffness, resulting in early vascular aging and cardiovascular diseases as well as the importance of nutrition and active exercise in its prevention.
Rosado-Pérez et al.  worke focuses on the powerful antioxidant naringenin, a flavonoid with a high antioxidant capacity present in the
chayote plant (Chayota edulis (Jacq.)). The chayote plant is an example of edible fruits and vegetables with relevant antioxidant content.
One of the reviews presents how known hepatoprotectors act as antioxidants and immune stimulators in animals. De la Riva et al. 
used mice to develop a preventive treatment to be tested and used in livestock based on the hepatoprotective and antioxidative properties as
well as the immune modulation effect of yeast β-glucans in animals. The study included perspectives on animal health care.
Gastrointestinal cancers are one of most common chronic diseases and are among the top three causes of mortality in the world. Despite
extensive improvements in surgery, chemotherapy, radiotherapy and target therapy over the last decades, the outlook for patients remains
miserable, with short survival in advanced cancer stages and recurrence. Long non-coding RNAs (lncRNAs) are non-protein coding RNA
molecules more than 200 nucleotides which regulate gene expression.lncRNAs plays an important role in initiation, development and metastatic
behavior of various tumors. MicroRNAs (miRNAs) are evolutionary conserved, short (~22 nucleotides in length), single-stranded RNA
molecules that attributed to the big family of small non-coding RNAs. MiRNAs contribute in the tumorgenesis as either tumor suppressors
(oncosuppressor) or oncogenes (oncomiR), lncRNAs may function as competing endogenous RNAs (ceRNAs) to attract miRNAs, therewith
modulating the derepression of target miRNA. LncRNAs and micro-RNAs can be circulated in body fluid, suggesting their values as noninvasive
predictor marker of cancer diagnosis, classification, prognosis, and response to treatment.
The thematic issue provide the readers working in basic biomedical sciences as well as clinicians a comprehensive overview on diagnostic,
prognostic significance and targeting lncRNAs and miRNAs in gastrointestinal cancers.
In this issue, Garajová and co-workers  provide an overview about association of noncoding RNA in pancreatic cancer with respect to
their application as diagnosis, prognosis and therapeutic target. Furthermore they discuss the influence of non-coding RNAs in the metastatic
behavior of pancreatic cancer, and the role of diet in epigenetic regulation of non-coding RNAs, which can lead to the development of novel
prevention approaches or targets for cancer therapy.
The review entitled “Role of regulatory oncogenic or tumor suppressor miRNAs of PI3K/AKT signaling axis in the pathogenesis of colorectal
cancer” explored the regulatory miRNAs of PI3K/AKT/mTOR signaling as represent novel biomarkers for new patient diagnosis and
obtaining clinically invaluable information from post-treatment CRC patients for improving therapeutic strategies .
Moradi-Marjaneh and co-authors review TGF-β signaling pathway which plays an important role in normal intestinal tissue function and
development of CRC. In this study, they summarized the data of interaction between TGF-β signaling pathway and miRNAs to better understand
the molecular mechanisms in CRC .
Ghanaatgar-Kasbi et al., investigated the therapeutic potential of targeting c-mesenchymal-epithelial transition factor (c-MET) pathway
via novel HGF/Met inhibitors in pancreatic cancer, since this pathway is among the key dysregulated pathway in pancreatic cancer and its
overexpression is reported to be associated with poor prognosis and chemo-resistance .
Another study entitled “Phytosomal curcumin elicits anti-tumor properties through suppression of angiogenesis, cell proliferation and
induction of oxidative stress in colorectal cancer” investigated the anticancer activity of phytosomal curcumin, in colorectal cancer . Curcumin
is a bioactive compound of the spice-herb turmeric or Curcuma longa and has been widely investigated for its anticancer activities in
various types of cancer cell lines and in vivo tumor models. However, curcumin application in the clinic has been limited due to its poor solubility,
low oral bioavailability and rapid metabolism which has resulted in attempts to improve curcumin formulations. Phytosomal curcumin
is a novel formulation could overcome the limitations of conventional delivery systems, exerts sustained release and optimize the curcumin
absorption and bioavailability. Moreover, phytosomal technology enhances absorption following oral administration and also has a liver protective
effect due to phosphatidylcholine used to its preparation. Khazaei et al. showed that phytosomal curcumin has anti-tumor properties
through suppression of VEGF signaling regulatory miRNAs, cell proliferation and induction of oxidative stress in colorectal cancer.
Helicobacter pylori infection is considered as the most important risk factor for gastric cancer (GC). Although H. pylori is associated with
acute and chronic inflammation of gastric epithelium, it has been recognized as an important carcinogen for GC. There is growing body of
data showing that H. pylori is related with dysregulation of microRNAs expression. Parizadeh and co-workers provide an overview about
recent studies investigated the different expression of tissues miRNAs depends on Helicobacter pylori infection and effect of these different
expression on development and progression of Gastric cancer .
The review of Javadinia et al., summarized the current status on Phosphatidylinositol 3-kinase/AKT/Mammalian Target of Rapamycin
(PI3K/AKT/mTOR) pathway and their cross regulation with a focused on the value of targeting this pathway as a potential therapeutic target
in treatment of esophageal cancer, since overexpression of this pathway is associated in the development, and prognosis of esophageal cancer
Asgharzadeh and colleagues investigated the therapeutic application of Angiotensin-converting enzyme and angiotensin receptor
(ACEIs/ARIs) inhibitors in the treatment of colorectal cancer .
Fani et al. discussed the interaction of dysregulated miRNA by different viral infection, such as EBV, HSV1&2, KSHV, MHV68, CMV,
Polyoma virus, Adeno Virus, HBV, HAV, EBOV .
Another study by Amerizadeh et al., explored discuss current circumstances and future outlooks of targeting angiogenesis using novel
VEGF inhibitors and small noncoding microRNAs in gastrointestinal cancers .
Rezaei and colleagues present recent advances on electrochemical detection assays, which has strikingly gained the ultrahigh sensitivity
and selectivity. This review summarizes the drawback of current detection methods and also highlights the recent advances on the biosensory
methods as point-of-care devices which can able to measure the circulating miRNAs in various cancers .
Finally we hope these multidisciplinary topics discussed with the theme issue, promote further discussion among current status and future
prospective of Long non-coding RNA and microRNAs as novel potential biomarker and therapeutic target in the treatment of gastrointestinal
cancers. As the guest editors, we would like to thank all the authors and co-authors for their excellent contributions. furthermore, we would
sincerely thank and acknowledge the diverse group of experts and colleagues who offered their substantial reviewing efforts and suggestions.
Last but not least, we would like to express our gratitude to the Bentham Science Publishers for the wonderful experience on this thematic
issue and Prof. William A. Banks, Editor-in-Chief of Current Pharmaceutical Design to give us this opportunity to publish this issue. Also It was a great pleasure working with the Director Kazim Baig, for the opportunity to publish in Current Pharmaceutical Design. It was a wonderful
experience working with Editorial Assistant Aamer M. Khan at the time of submission and processing of the manuscripts. I would like
to acknowledge the contributions of others who took care of editing and processing the manuscripts to obtain the best final quality at the time
Arterial and venous thrombosis affect a significantly underreported number of people worldwide, leading to million deaths per annum .
Cardiovascular disease is the leading cause of death, especially in low- and middle-income population . Venous thromboembolism (VTE)
is the cause for half a million deaths per year in the European Union, alone.
A plethora of different mechanisms involving the coagulation cascade and platelets play various roles in thrombosis. The coagulation
mechanism consists of activation, adhesion, and aggregation of platelets along with deposition and maturation of fibrin.
For decades, acetylsalicylic acid, warfarin and heparin were the only available pharmaceutical agents to prevent arterial and venous
thrombosis. Despite the fact that these medications saved millions of lives, they had – and still have - significant side effects; warfarin had a
narrow therapeutic window, the need for regular monitoring, risk of bleeding and numerous interactions with other medication. Unfractionated
heparin also requires continuous monitoring and had a short half-life. Acetylsalicylic acid is available for oral administration and its intravenous
form is only a precursor molecule and not an active ingredient.
The development of novel pharmaceutical agents answers to the clinical need for better control over the anti-thrombotic effect, improved
hemodynamics and safer outcomes for patients.
Novel oral anticoagulants (NOACs or DOACs from Direct Oral Anticoagulants) and novel antiplatelets (NAs) are new additions to the
clinical armament for cardiac and vascular patients. These new drugs have been developed in order to address the limitations of the previous
generation of anti-thrombotic medication. They do not need routine monitoring and interact less frequently with other medications. In 2010,
the Food and Drug Administration (FDA) approved its first NOAC, dabigatran (Boehringer Ingelheim) ). By 2015, FDA had approved
three more NOACs: rivaroxaban (Johnson & Johnson and Bayer Healthcare AG), apixaban (Bristol-Meyers Squibb & Pfizer Inc.), and edoxaban
(Savaysa/Lixiana, Daiichi Sankyo). At present, clinical data and patients’ outcomes are being collected and the different NOACs and
NAs are supported by different levels of evidence leading to fine differences in national guidelines on their use [4-7].
Despite the fact that the clinical use of most NOACs and a number of NAs is already regulated by the continuously updated guidelines,
questions remain about the safety and the indication of their use on vascular patients presenting with peripheral arterial disease (PAD), VTE,
and symptomatic or asymptomatic carotid disease. Vascular patients frequently present with various synchronous comorbidities and are often
required to undergo more than one surgical or endovascular procedures in relatively short periods of time. As a result, the perioperative management
of NOACs and NAs is still under careful assessment for this group of patients. Krasinski et al.  examine the administration of
NOACs in patients with chronic kidney disease (CKD), a comorbidity frequently present in vascular patients.
PAD affects approximately 10% of patients over 60 years of age . Until recently, patients affected by PAD have traditionally been
prescribed antiplatelets (acetylsalicylic acid and/or clopidogrel) and in cases of intermittent claudication cilostazol. Koutsoumpelis et al. 
provide us with the latest updates on how the COMPASS and other trials are currently altering our existing knowledge on pharmaceutical
treatment of PAD. The COMPASS trial mentions for the first time that adding a NOAC (rivaroxaban) to the established treatment of PAD
improves patient outcomes, but it leaves some pending questions on which subgroup of patients are benefited the most . Tsilimigras et al.
 comment further on the clinico-economical impact of the COMPASS trial.
It is essential for anaesthetists and vascular surgeons to know the properties of NOACs and NAs. The perioperative period is associated
with significant prothrombotic and bleeding risks, both potentially leading to complications or death, if not efficiently and timely addressed.
The peri-operative management of the NOACs in arterial surgery is discussed by Kouvelos et al. . Regarding the peri-operative management
of NOACs in venous procedures, Drebes et al.  focus on interventions for ilio-femoral deep vein thrombosis.
As long as NOACs are concerned, peri-operative and post-traumatic bleeding is thought to be more complicated to control compared to
traditional anticoagulants, although recent publications do not support this hypothesis . Not all NOACs have a fully reversible effect or a
direct inhibitor of their action. The management of post-traumatic or peri-operative bleeding is addressed in two publications by Zimmermann
et al.  and Palaiodimos et al. .
Resistance to older antiplatelet agents is well known and recorded in previous publications . Markel et al.  described how this
resistance can be quantified and measured. NAs are capable of addressing this limitation of classic antiplatelet agents and providing better
outcomes for vascular patients. Patelis et al.  provides an update on the use of already established NAs and also reports on experimental
Cardiovascular prevention strategies may consider that beyond treating hypertension per se, the benefit of evaluating subclinical organ
damage and reverse these damage, is an important endpoint in the cardiovascular continuum from a risk factor to evident disease. The importance
of subclinical organ damage lies on the reversible of the damage in many cases and this can be a protective factor for future CV health.
As all human beings are in an atherosclerosis progress from birth to the end of life, it is important to have intermediate end points in this procedure
that can predict future disease. prevent complications or delay the procedure. Different treatment approach of the hypertensive disease
may relate to the regression or progression of subclinical organ damage. This special issue try to analyze the current evidence in treating
hypertensive patients with organ damage.
Treatment of hypertension induced target organ damage in children and adolescents is important because young patients that are already
have cardiac or vessel disease are going to have more serious cardiovascular complications in the near future. The most prevalent subclinical
hypertensive target organ damage in children and adolescents is left ventricular hypertrophy and adequate blood pressure control with antihypertensive
therapy may result in the regression of the damage . Arterial stiffness is a marker of cardiovascular disease associated with
cardiovascular events. Increased vascular ageing is the acceleration of arterial damage for a given chronological age. Reduced progression of
vascular ageing may include physical exercise, moderate alcohol consumption, reduced salt consumption, weight reduction and appropriate
control of vascular damaging risk factors with antihypertensive, lipid lowering and anti-diabetic treatment . Vascular factors contribute to
the onset and progression of cognitive decline with advancing age. Hypertension is the most prevalent CV risk factor for cerebral macrovascular
and microvascular complications factors for Alzheimer disease and vascular dementia. Evidence support that antihypertensive drug
treatment may play a role in the prevention of cognitive impairment.
Regression of hypertension-induced left ventricular hypertrophy reduces cardiovascular morbidity and mortality. Adequate blood pressure
control reduces cardiac hypertrophy and future heart failure. Blockers of the renin-angiotensin-aldosterone system reduce cardiac remodeling
beyond their blood pressure reduction. Such drugs are important in the regression of left ventricular hypertrophy but the most important factor
is to reduce BP back to the normal levels . Prevention of atrial fibrillation is important and hypertensions, a modifiable risk factor, may
reduce new and recurrent atrial fibrillation. Renin-angiotensin system blockers prevent new-onset AF in patients at high cardiovascular risk,
left ventricular hypertrophy or heart failure . Finally, albuminuria is associated with cardiovascular and renal risk. Endothelial dysfunction
of the renal vessels is increasing albumin excretion. Changes in albuminuria were considered to have moderate prognostic value. Angiotensin
converting enzyme inhibitors and angiotensin receptor blockers are the drug of choice, while mineralocorticoid receptor blockers can be considered
in uncontrolled hypertensive patients with albuminuria. CCBs can be used in addition to the RAAS blockade as a second step and
then all other drug classes if BP is not controlled. The effect of other antihypertensive drugs classes on the onset and reduction of albuminuria
is driven from the BP reduction .
Subclinical organ damage is an evidence of a good or bad long term blood pressure control. Future research may focus in these patients to
prevent disease and despite that we have many randomized clinical trials in hypertension, studies on long term effects on BP induced intermediate
end points are lacking.
Keywords: Hypertension, target organ damage, antihypertensive treatment, early vascular ageing, pulse wave velocity, left ventricular hypertrophy,
Plants have assured for centuries the treatment and prevention of several illnesses, and are still used on current days in traditional medicine.
Phytochemical studies have disclosed the presence of bioactive secondary metabolites, some with cytotoxic properties, that prove the
medicinal value of natural products. As such, their bioactivity and versatility have attracted researchers to perform all kinds of studies. The
unmodified structures of cytotoxic natural products allowed the discovery and modulation of new cellular targets, and also the elucidation
mechanisms of action, but their applications are limitless. The biological value of this type of molecules has inspired the modulation of their
activity through structural modifications or the synthesis and design of new compounds with the aim of mimicking their properties.
For this reason, this thematic issue focuses on recent discoveries related to cytotoxic natural products. Therefore, biological cancer-related
targets, clarification of the signal transduction pathways of cell death, structural elucidation and drug design of new plant-derived natural
products with proven activity cover the scope of this issue.
Moreover, chemoprevention is the long-term pharmacological control on the risk of cancer. On this matter, several plants, together with
their compounds, have been investigated for their antitumor potential.
As it is well known, natural products represent a unique source of lead compounds for pharmaceutical drug design. In fact, several medicinal
plants have been studied and their beneficial effects and have been rediscovered for the development of new drugs. Current research in
drug discovery has been inspired by the vast ethnopharmacological applications of natural products, providing new and important leads
against various pharmacological targets.
Despite the recent interest in synthetic chemistry techniques by the pharmaceutical companies, the natural products and particularly medicinal
plants, remains an important source of new drugs, new drug leads, and new chemical entities. At least one-third of the current top
twenty drugs on the market are derived from a natural source, mainly plants, and approximately 50% of the marketed drugs are classified as
naturally derived or designed on the basis of natural compounds .
Being that so, this special issue will cover current research articles on natural products from renowned researchers in the field of medicinal
chemistry drug development. The works chosen in this proposal will evidence that natural products research can lead to advances in synthetic
methodologies and to the possibility of making analogs of the original lead compound with improved pharmacological properties,
which can prompted further pharmaceutical developments. The complex architectural scaffolds and densely deployed functional groups, affording
the maximal number of interactions with molecular targets, often lead to exquisite selectivity against tumor cells.
Considering all these facts, this thematic issue covers different natural products compounds such as:
1. Garcia et al. manuscript covers a vast range of Plectranthus-derived diterpenes and focusing on those that possess antiproliferative,
antitumoral or cytotoxic potential. Previous studies have already proven the cytotoxic potential of diterpenes, some of which are
herein reported, namely the abietane diterpene 6,7-dehydroroyleanone .
2. Prieto and Silveira, reviewed the cytotoxic and/or antitumoral activities of diterpenes in melanoma. Many such compounds -
particularly Phorbol esters- have been known for their activity against skin malignancies since ancient times, and have provided humans
with one of the most potent anticancer drugs ever (Taxol). The recent approval of the diterpene ingenol mebutate for the chemoprevention
of melanoma in actinic keratosis patients renews the interest in this megadiverse class of secondary compounds as potential
sources of future melanoma chemotherapy .
3. Mori et al. reviewed the use of natural products as a unique source of lead compounds in the identification of small molecule inhibitors
of signaling pathways implicated in cancer stem cells proliferation, such as Notch and Hedgehog .
4. Duarte et al. in their review “Cytotoxic Stilbenes and Derivatives as Promising Antimitotic Leads for Cancer Therapy” presents an
overall overview regarding the discovery of natural stilbenes, its development as lead compounds and its mechanism of action. A
global review about the synthetic methodologies and structure-activity relationships for the antimitotic cis-stilbenes combretastatins
and derivatives is also referred. A special emphasis was made in the analysis of preclinical studies and clinical trials of the most promising
candidates. In addition, recent nanotechnology procedures and particularly different types of nanocarriers for targeted delivery
of combretastatins is extensively reviewed .
5. Domínguez-Martín et al. in their review Anticancer Hybrid Combinations: Mechanisms of Actions, Implications and Future Perspectives”
classify and analyze for the first time, the synergistic mode of action of the combinations between synthetic drugs and plants
secondary metabolites from plants or their extracts.
At this point, it should be emphasized that the study of synergy among the secondary metabolites of plants is one of the aims of the
Medicine for the XXI century, which will have a huge relevance in rationalizing the use of Phytotherapy and Integrative Medicine as
T. Efferth got an insight into his work .
6. Milica Pesic: Inhibition of P-gp is very important characteristic of natural compounds with anticancer potential. Therefore, we conducted
a comprehensive literature review of natural-based P-gp inhibitors that possesses great interest for the scientists in the field of
cancer multidrug resistance (MDR) research and nature inspired chemical synthesis. An overview of traditional medicine contribution
to the field is also included .
7. Quintana and Estévez review about recent advances on cytotoxic sesquiterpene lactones against cancer cells. These plant-derived
compounds may have therapeutic value in the development of new anticancer agents because they are better tolerated than synthetic
chemotherapeutics, simultaneously target many key pathways and mechanisms and show higher affinity against cancer cells .
8. Faustino et al., manuscript provides an updated overview on the cytotoxicity and chemotherapeutic potential of rosin abietane diterpenoids
in cancer treatment. These compounds have been shown to execute their anticancer activity through targeting diverse oncogenic cell signaling pathways, promoting cell cycle arrest and apoptosis or oncosis, inhibiting tubulin polymerization and disrupting intracellular
cholesterol transport, thus opening a new avenue for cancer treatment and chemoprevention .
In conclusion, in this issue, a team of international experts that works with natural products reviewed the most novel topics and approaches
towards the development of therapeutic agents for precision medicine.
Cancer and chronic inflammatory diseases have a significant impact on quality of life, due to both disease progression and drugs’ adverse
effect. On the other hand, complementary medicine, including supplements, herbs, probiotics and prebiotics, is a topic of growing interest in
both preclinical and clinical studies. In particular, antioxidant phytochemicals have been suggested as complementary medicines able to reduce
the adverse effects of drugs. In this context, Paz et al.  reported both hepatoprotective and cytotoxic effects for diterpenes. On the
other hand, Ayati et al.  reviewed the traditional uses of Rosehip and the potential effects of its bioactive phytochemicals, including phenolic
compounds. Marranzano et al.  suggested that polyphenols from residual sources could be used for increasing the stability of foods by
preventing lipid peroxidation, potentially improving the effects on health of certain foods. However, polyphenols are metabolized by human
body as drugs.
Many genetic and epi-genetic factors affect the efficacy of conventional medicine, as well as of nutrients. Virgili et al.  reviewed the
relationship between specific polymorphisms of genes encoding for metallothioneins and zinc transporters with zinc status, immune function
and some non-communicable diseases.
Concerning non-nutrient bioactive molecules, in addition to their metabolism by human body, which is affected by genetic polymorphisms
of genes involved in the metabolisms and disposal of drugs, many phytochemicals are metabolized by gut microbiota. The latter can
be affected by some phytochemicals, having anti-microbial activity, as well as by disease state and drug treatment. Vamanu  reviewed the
prebiotic effects and the role of the polyphenolic component of wild edible mushrooms in the potential health effects of wild edible mushrooms
as complementary medicine. Probiotics and prebiotics consumption can improve health by microbiota modulation.
Korada et al.  reported that the potency of probiotic differs from strain to strain and that more comparison studies are needed in the
direction of probiotic functionality and clinical efficacy of single strains versus multi-strain mixture for a disease prevention and management.
Within mechanisms of probiotic protection on Inflammatory Bowel Disease there is the production of short chain fatty acids, such as the immunomodulatory
molecule butyrate, by the gut microbiota .
On the other hand, hormones have significant roles in inflammatory and immune mediated diseases. Yang et al.  reviewed the influence
of hormones on Sjögren’s syndrome, including adrenocorticotropic hormone, follicle-stimulating hormone, luteinizing hormone, thyroid-
stimulating hormone and prolactin. Authors concluded that hormonal influence can account of the high prevalence in females and elderly
people. Furthermore, being immune system primarily involved in Sjögren’s syndrome, also genetic polymorphisms in human leukocyte antigen
play a role in disease pathogenesis .
Therefore, hormonal imbalance, genetic polymorphisms and microbiota diversity suggest that the concept of integrative medicine should
be associated with that of personalized medicine. In this context, new trends in diagnosis and therapy include nanotechnology, having potential
application in personalized health care. The latter, including personalized nutrition, physical activity and outdoor lifestyle, has been suggested
for veterans with disabilities by Ciccotti et al. .
However, sunlight exposure may increase the incidence of eye diseases, including pterygium. In this context, Zein et al.  performed a
meta-analysis of randomized controlled trials comparing the efficacy and complications of autologous blood versus using fibrin glue and surgical
sutures for conjunctival autograft fixation in primary pterygium surgery. Patient satisfaction and postoperative symptoms are relatively
better in the blood coagulum group than the other techniques .
In conclusion, we hope that this issue can add knowledge on the effects of bioactive molecules from foods and herbal extracts on chronic
diseases and on the role of microbiota, genetic factors and hormones in diseases diagnosis and management.
In closure, we end this editorial by thanking Dr. William A. Banks, the Editor-in-Chief, as well as Bentham Science Publishers, the Director
Kazim Baig and the Editorial Assistant Aamer M. Khan. We extend our appreciation to contributing authors who have actively responded to our request by contributing to this special issue of Current Pharmaceutical Design and the peer reviewers for the time and expertise that
each altruistically provided in reviewing the submitted manuscript.
Chronic disease such as has become the main killer of human health due to its difficult to early detection, diagnosis and treatment. The
history of treatment of chronic diseases covered traditional herbal, medication, as well as new targeted drug therapy immunotherapy and even
surgical anatomy. Through the above treatment, some diseases can be controlled, but some cannot be effectively cured, especially for cancer
patients at advanced stage. In the past few decades, the developments in the biomedical technologies improve the diagnosis and treatment of
disease. Despite novel approaches being an attractive strategy in treatment (and there is a great interest in the development of powerful approaches
to be incorporated into clinical practice), persistent gaps do exist between published research and clinical application. Thus, there is
a need to fundamentally address all the above-mentioned issues in this issue.
There are six interesting papers in this special issue covering machine learning methods on handcrafted and deep learned features for
ATC classification, machine learning in precision medicine and nitrotyrosine sites’ prediction in proteins, advances in antidiabetic drugs targeting
insulin secretion, simulations of enzyme thermostability study and predict subcellular localization of plant proteins by general PseAAC
and balancing training dataset
Diabetes mellitus (DM) is a chronic, complex and multifactorial disease associated characteristically with hyperglycemia. Ding and coworkers
 focused on antidiabetic drugs and antidiabetic drugs targets. In this article, some antidiabetic drugs were described, such as metformin
(biguanide), sulfonylureas (Insulin secretagogues), thiazolidinediones (TZDs) and a-glucosidase inhibitors (AGI) and some antidiabetic
drugs targeting insulin secretion including GLP-1R, KATP, GPR119 and FFAR1 were also introduced. At present, insulin therapy for
diabetes mainly includes supplementation of exogenous insulin, improvement of insulin resistance, and protection of insulin beta cells. This
article mainly introduces the drugs and targets related to improvement of insulin resistance.
Meng and co-workers  provided an overview of how machine learning can help the scientific community of how to use machine learning
algorithms for precision medicine. The review covered fundamentals of the machine learning methods, including the deep neural networks,
as well as interesting case studies. The advantages and disadvantages are also discussed along with some computational tools.
In this issue, Lumini and Nanni  described approaches for Anatomical Therapeutic Chemical (ATC) classification of unknown compound.
The ATC classification system is a comprehensive drug classification scheme developed by the World Health Organization (WHO),
in (Lumini and Nanni) the 14 main overlapping classes of the first level of ATC are used. A novel approach based on convolutional neural
network is proposed, the authors reported state-of-the-art performance in a large dataset already used in the literature. Both code and dataset
will be available at https://github.com/LorisNanni
Information of protein subcellular localization is vitally important for both basic research and drug development. Cheng and co-workers
 reviewed the protein subcellular localization and introduced a very powerful new predictor called “pLoc_bal-mPlant”. The new predictor
is remarkably superior to the state-of-the-art method in predicting the subcellular localization of plant proteins.The new predictor’s webserver
has been established by which users can easily obtain their desired results.It is anticipated that the new method will become a very
useful tool for medical science.
Li and co-workers  proposed Simulated Protein Thermal Detection (SPTD) to investigate the thermal stability of enzymes. The method
was based on the evidences observed by conducting the MD (Molecular Dynamics) simulation for all the atoms of an enzyme vibrating from
the velocity at a room temperature (e.g., 25°C) to a desired working temperature (e.g., 65°C). Some useful conclusions are summarized as
follows. As a result, the SPTD method could provide the information of protein structures in dynamically thermal motion, which is very helpful
for studying and improving protein thermal stability and enzyme bioactivity in the environment of higher temperature. The strategy of
side-directed mutations for thermal stability improvement could be designed based on the interaction types between side chains of amino
acids, such as hydrogen bond, cation-π interaction, polar hydrogen-π interaction, salt-bridge, and amide-bridge. And it is anticipated that the
SPTD technique presented in this paper may become a very useful tool for pharmaceutical design and protein engineering.
Ahmad and co-workers  proposed a new method for predicting the PTM sites for nitrotyrosine sites. They applied adaptive training
algorithm i train a back propagation neural network for prediction purposes. Through verification and validation, a promising accuracy of
88%, a sensitivity of 85%, a specificity of 89.18% and Mathew’s Correlation Coefficient of 0.627 is achieved.
The spectrum of neurological disorders is extremely broad, and as we enter a super-aging society, the number of patients with age-related
neurological disorders will rise rapidly. Therefore, the need to develop therapies and ways to prevent the progression of neurodegenerative
diseases is highly important.
For example, in Alzheimer's disease, the abnormal accumulation of the amyloid β peptide has been established as a fundamental pathology,
and antibody therapies and vaccines targeting amyloid have been shown to improve cognitive function in animal models. However, even
though some of these antibodies have been shown to suppress the accumulation of the amyloid β peptide, there is no vaccination/medication
with a proven clinical effect available at the present time. Furthermore, true disease modifying medications are still needed for other neurological/
neurodegenerative diseases including epilepsy, Parkinson's disease, ALS (amyotrophic lateral sclerosis), SCD (spinocerebellar degeneration)
etc. Thus, the importance of translational research aiming to develop concepts from basic research using an animal model to clinical
application and incorporating the bench to bedside idea is more necessary than ever.
By elucidating the pathogenic mechanisms of brain and neurological diseases, it may become possible to identify key molecules to develop
prophylactic/therapeutic drugs and to target the mechanisms underlying these diseases. In the future, it is hoped that early detection of
disease conditions will be achievable through the identification of biomarkers that can be used for early or specific diagnosis. Drug delivery
methods also need to be developed through the use of appropriate animal models.
In this special issue, leading international experts discuss the most relevant topics on novel potential targets for NAP , PACAP [2, 3],
CGRP , ODN  and GALP . We would like to thank all the contributors to this special issue for their efforts.
Recent decades, the development of computational tools and techniques has become a well-established research area, and it contributes to
different applications in cancer research including genomics, proteomics, and epigenomics. Raising studies using computational techniques is
constructing to the aggregation of big biological data, as well as the improvement of high-performance computing. Numerous techniques,
such as Big data analysis, computer-aided drug design, cancer immuno-informatics, epigenomics, data science and medical computing, deep
learning in precision medicine, gene regulatory networks, interactomics, molecular modeling and simulation techniques, machine learning in
precision medicine, systems and synthetic biology, systems pharmacology and systems based precision medicines play a pivotal role in the
field of computational biology. The developments and broader applications of these methods not only improve our standing of the mechanisms
of biological processes but also facilitate the diagnosis and therapy. For instance, high throughput machine and deep learning is a rational
drug design method that benefits the discovery and development of drugs targeting specific proteins.
A computational perspective on the current state of the methods and challenges in cancer drug discovery looking for high-quality research
related to interdisciplinary approaches to exploiting the power of drug discovery by applying new algorithms, tools and databases. The proposed
articles in this special issue have a significant contribution to developing new ideas, machine learning, target identification, drug delivery
system and rational drug discovery techniques to the cancer research through the esteemed researchers around the world.
In this issue, Wang et al.,  discussed the targeted therapy on personalized medicine in cancer. The authors describe a brief introduction
on the advanced drug or drug-like therapy with genetics, epigenetics, and metagenomics respectively, from the viewpoint of personalized
determinates. Then summarize the computational methods helpful to analyze the corresponding omics data under the consideration of personalized
biological context; and mainly focus on the metagenomics to discuss current data, method, and opportunity for personalized medicine.
This article indicates the targeted therapy has an important part in cancer individuals.
Selvaraj and Singh  described the potential impact of DNA molecule on therapeutic application through selective recognition of molecular
targets and pathways. The interaction mechanisms (intercalators and groove binders) of small molecules with DNA are a significant
feature in target-based drug development. This article attempts to outline those interactions of drug target-DNA with both experimental and
computational advances, including ultraviolet-visible spectroscopy, fluorescent spectroscopy, circular dichroism, nuclear magnetic resonance
(NMR), molecular docking, dynamics, and quantum mechanical applications.
Chien et al.  described the importance of computer-aided drug discovery (CADD) techniques on cancer drug development. CADD
strategies like structure-based, ligand-based, and combined structure-based and ligand-based approaches have the advantage of identifying
target sites and discovering candidate drugs with high affinity. In this article provide more details about the types of computational strategies,
computational techniques to the modeling and drug discovery and scoring functions for evaluation protein-ligand complexes has been reviewed
for future research.
Rehman et al.  discussed the allosteric regulation of protein tyrosine phosphatase (Shp2) on the dysregulation of cell signaling cascades
associated with cell differentiation and growth. The deletion, insertion or point mutation in specific amino acids, which alters the natural conformation
of the Shp2, can ultimately lead to fatal cancer. Studies reported that the germline mutations in the interface of PTP and SH2 domain,
Shp2 have a significant association with acute myeloid, juvenile myelomonocytic, and B-cell acute lymphoblastic leukemia, Noonan
syndrome, and myelodysplastic. This review covers the last 10-year recap of Shp2 protein, their role in cancer, and regulation in allosteric
Turanli et al.  described a complex framework of interacting partners including genetic, proteomic, and metabolic networks that cooperate
to mediate specific functional phenotypes drives human biological processes. Pharmaco-omics analysis based on an integration of
pharmacology and various “omics” data types can be employed to develop effective treatment strategies using particular drugs and doses that
are tailored to each. Then, the authors provide an opening into precise medicine and drug targeting based on network approaches. Also, this
article offers the current significant efforts as well as the accomplishments and limitations in precise drug targeting with the utility of network-
based guided drug discovery methods for effective treatment of breast cancer.
Kaliamuthi et al.  discussed the cancer immunoinformatics have new directions towards in vaccine design from predicted potential
epitope candidates, able to stimulate correct cellular or humoral immune responses. In this review, the authors explained multiple computational
tools including online and user-friendly immunological tools, servers and databases to identify the potential target epitopes for peptide
vaccine design and development. Also, the mechanism of major histocompatibility (MHC) restricted peptide presentation and how these tools
are supporting the vaccine development is presented. Human papillomavirus (HPV) has been taken as a model microbial strain for peptide
vaccine design and discussed their sensitization against HPV induced cervical cancer significantly.
Basharat et al.  discussed the cancer genome sequencing analysis and its application in diagnosis and personalized treatment. Analysis
of the sequencing data involves the integration of computation, statistics, and system biology methods. The results of the analysis can improve
the study about the interaction of cancer cells with the immune system, harnessing immune system for cancer therapy or its prevention
through vaccines has led to the foundation of cancer immunomics. There has been a gradual increase in the establishment of cancer immune
focused start-ups, research facilities and pharma-giants working on state-of-the-art methods for improving diagnostics, treatment, and prevention
or minimizing side effects, applying immunomics. In this review, authors provide an overall picture and focused on immune biomarkers
and relevant software that aid in the diagnostics and analysis of cancer.
Loganathana and Muthusamy  described the current scenario in structure and ligand-based drug design on anti-colon cancer drugs.
Recent molecular modeling approaches, driven by rapidly improving computational platforms, have led to many success stories for the use of
computer-assisted drug design in the discovery of the structure and ligand-based drugs. This review provides information on how anti-cancer
drugs were formulated and identified using computational power by the drug discovery society.
Tang et al.  described the computational advances in the label-free quantification of cancer proteomics data. The label-free quantification
(LFQ) is frequently employed to quantify cancer proteomics data. However, low precision, poor reproducibility, and inaccuracy of the LFQ of proteomics data have been recognized as the key “technical challenge” in the discovery of anticancer targets and drugs. The review
article offers, a variety of favorite acquisition techniques and state-of-the-art quantification tools are systematically discussed and critically
assessed. Then, many processing approaches including transformation, normalization, filtering, and imputation are subsequently discussed,
and their impacts on improving the LFQ performance of cancer proteomics are evaluated. Finally, future directions for enhancing the computation-
based quantification technique for cancer proteomics are also proposed.
Kandasamy et al.  discussed the biopolymers-based nanocomposites for anticancer and antimicrobial drug delivery. Biopolymers
based nanocomposites have gained more attention as a drug carrier, sensors, disease diagnosis, tissue engineering, wound healing and cancer
therapy. This mini-review emphasized the source, extraction, and characterizations of the biopolymers and their use in the fabrication of various
drug or metals based nanocomposites followed by its utilization as a drug carrier to treat cancer and microbial infections.
We hope multidisciplinary topics discussed with the theme issue will promote further discussion among researchers in computational
biology and cancer drug discovery.
As the guest editors, we would like to thank all the authors and co-authors for their excellent contributions. In addition, we would like to
thank a group of scientific experts in computation and cancer drug delivery who offered their strong comments and suggestions to improve
the quality of this special issue. Finally, we would like to express our sincere appreciation to the Director Kazim Baig, Editorial Assistant
Aamer M. Khan, copy-editors and all the editorial staffs in Current Pharmaceutical Design, Bentham Science Publishers for the excellent
opportunity, and experience while working with this thematic issue.
This issue of Current Pharmaceutical Design covers several topics in the fields of prevalence, identification, scouting, and mainly treatment
of Familial Hypercholesterolaemia (FH). Twelve experts with long-term personal experience in this field from both sides of the Atlantic
had the courtesy to contribute significant papers that cover spherically the topic of FH.
Prof. Viigimaa and colleagues  analyzed current data on the pathogenesis and on pathophysiology of FH. Prof. Elisaf and colleagues
 reported the prevalence (the most common inherited disease), identification, and scouting for FH including FH Registries. Dr. Gossios and
colleagues  investigated the multimodal treatment of homozygous FH (HoFH). Prof. Tselepis and colleagues  reported the current status
and the future perspectives on the treatment of FH. Prof. Stefanutti and colleagues  reported recent data on the effect of lipoprotein apheresis
plus PCSK9-inhibitors on low density lipoprotein cholesterol (LDL-C) and the anti-inflammatory mediators in HoFH and severe heterozygous
FH (HeFH). Prof. Athyros and colleagues  reported on drugs that mimic the effect of gene mutations for the prevention or the
treatment of atherosclerotic disease: from proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibition to Angiopoietin-like protein 3
(ANGPTL3) inactivation. Prof. Papademetriou and colleagues  reported the main differences between the two commercially available
PCSK9 inhibitors Evolocumab and Alirocumab. Dr. Theocharidou and colleagues  investigated the role of PCSK9 in the pathogenesis of
non alcoholic disease (NAFLD) and reported the effect of PCSK9 inhibitors to ameliorate it. Prof. Faselis and colleagues  investigated
whether very low LDL-C is harmful. Prof. Stevenson and colleagues  analyzed the data about the role of Lp(a) in Cardiovascular Disease
(CVD) in patients with FH. Finally, Prof. Stabouli and colleagues  analyzed the existing data on the diagnosis and treatment of FH in
children and adolescents.
Familial hypercholesterolemia (FH), an autosomal dominant disorder, is the most common inherited disease (not only in lipid disorders)
and it results in lifetime substantially increased levels of low-density lipoprotein cholesterol (LDL-C) leading to increased risk of premature
Cardiovascular Disease (CVD), up to 13-fold increased risk of Coronary Heart Disease (CHD) or aortic stenosis in comparison to general
population both in men and women . The prevalence worldwide is 1/500 to 1/200 births; between 14 and 34 million individuals worldwide
have FH . The majority of cases are due to LDL receptor loss of function gene mutation, some to apolipoprotein B loss of function
gene mutation and few to PCSK9 gain of function gene mutation . From those, less than 1% are diagnosed and even less are treated, with
only a few at LDL-C target, despite the fact that therapies (statins, ezetimibe, PCSK9 inhibitors, LDL apheresis, lomitapide, mipomersen
) are available . However, early diagnosis and effective treatment diminish the excess risk of premature atherosclerotic CVD in FH
[13-15]. The above underline the burden of this disease for the entire society, the necessity for effective efforts to treat it, and the enormous
attempt of educating physicians and patients as well FH patient organizations to implement life-style changes and drug treatment for FH [13-
15]. The aim of the present special issue is to critically evaluate the extent to which FH is underdiagnosed and undertreated worldwide and to
enlighten the identification and the effective treatment of this disease.
Screening for FH is the most important aspect of the disease. Since, if you do not know that the patient is suffering from FH, how can you
treat the disease? Most countries have no-screening strategy . Roughly, there are two ways of screening: the clinical and the genetic one
. Both methods have three ways: One is to find a young adult with overt CVD and very high LDL-C and then proceeds to cascade screening
of all blood relatives; the second is to investigate for FH all newborns and perform a reverse cascade screening of all blood relatives; the
third is to screen the entire population (this is done only in Netherlands) [17-19]. One of the major issues in these methods is the cost. Recently,
the general screening of children for FH followed by reverse cascade testing of blood relatives is viable and acceptable, although most
countries use the adult cascade screening .
Homozygous FH (HoFH) is very rare. It requires treatment with LDL-C apheresis, or lomitapide, or mipomersen (approved only from
FDA for use in US), or liver transplantation [20, 21]. All these treatments are very expensive. Some forms of HeFH respond positively to
statin-ezetimibe-PCSK9 inhibitors (IgG human antibodies injected SQ every 14 days) regimen, which can substitute all very expensive measures
stated above or can change the LDL-C apheresis cessions from once a week to once or twice a month, rendering the treatment less expensive
Heterozygous FH (HeFH) is the most prevalent genetic disease. Statins are the current primary treatment for all heterozygous FH patients,
and have been shown to be effective in reducing the incidence of CVD in patients with FH [20, 21]. Nevertheless, many HeFH patients do not
achieve their target LDL-C levels and they need additional lipid-lowering drugs, such as ezetimibe, and if the target was not achieved even
then, the addition of PCSK9 inhibitors is necessary [24-29]. PCSK9 inhibitor administration further reduced CVD events on top of statin and
ezetimibe treatment benefits [26-28]. Anti-DNA of PCSK9, small PCSK9 antibodies, microRNA, CRISPR/Cas9 are investigated in the pipeline
of anti-LDL-C newer and less expensive agents; however, it will take some time until they become commercially available.
We have the ways to screen for the disease; we have the ways to treat it; all we need is the knowledge and the willingness to do it. This is
because, the timely treatment of FH, especially HeFH, with all available lipid lowering drugs can reduce the CVD risk to the same level of the
normal population, practically eliminating the consequences of the disease.
We hope that you will enjoy reading the reviews in this CPD issue.
Anti-inflammatories, Anti-coagulants and Anti-hypertensives
Unique Drugs and Drug Design
Though there are numerous ongoing trials on gastro-intestinal (GIT) disorders, there is not much of reduction in mortality observed. On
the other hand, the global epidemic of GIT continues to progress relentlessly. Yet existing drug classes for GIT disorders have substantial
limitations. Majority of the reliability of drug discovery lies in medicinal chemistry. There are innumerable abrupt changes in the medicinal
chemistry especially in 3D structure analysis, high throughput screening and various novel interventions. Utilization of chemical entities
novel or modified can be targeted against the dreadful carcinomas via these modern techniques. In an instance, the majority of the colorectal
cancers are targeted by virtue of chromosomal instability but some types like microsatellite unstable cancers which are drug-resistant do not
respond to chemotherapy agents which is a huge challenge. This clearly shows that there is a high need for augmentation of therapeutics.
Presently, alongside synthetic molecules peptides and proteins are contending to tackle cancers. The striking supremacy of proteins includes
less intrinsic, tissue penetration and better targeting. It is a known fact that inhibition of apoptosis in the condition of cancers leads to an escalation
in the aggression of metastasis. Thus, manipulation or promotion of apoptosis can lead to a reduction of metastasis and improve life
expectancy. On the other hand, despite the advent of new drug classes, the global epidemic of the cardio-vascular and metabolic disease has
not abated. Continuing unmet medical needs remain a major driver for new research. Drug discovery approaches in this field have mirrored
industry trends, leading to a recent increase in the number of molecules entering development.
Previously, we successfully published the issue “Novel interventions and therapeutic targets in gastro-intestinal (GI) and metabolic disorders”
(Raj et al. 2017) in Current Pharmaceutical Design . However, the issue was limited to a wide range of interventional targets for GI
and metabolic diseases, but their biochemical pathways and molecular targets were not addressed. Thus, this special mini thematic issue
would thus handle the novel interposing in GIT and metabolic disorder, their underlying mechanisms such as autophagy, anti-apoptotic pathways
in intestinal cancers etc. The thematic issue would also focus on Biochemical pathways and the importance of interventions in designing
a better and promising molecule.
In this special issue, Dostie et al. demonstrated the importance of proper therapeutic targets for Inflammatory Bowel Disease (IBD). They
suggested that Metallothionein (MT) could be the possible targets for the IBD. The release of MT results in activation of inflammatory responses
leading to progressive inflammation and subsequent expansion of MT synthesis .
Rohini et al. discussed the causes of gastrointestinal diseases and the present state of various therapeutic strategies such as probiotics as live
biotherapeutics and Fecal Microbial Transplants (FMT’s) . The authors’ have recommended live biotherapeutics and FMT’s could be suitable
and successful alternatives to conventional therapies in mitigating the gastrointestinal pathogens.
Vinoth and colleagues in their review have discussed about Blastocystis sp., a protozoan parasite and its association with GIT disorders
and possible therapeutic targets . They suggested Metronidazole as is the first-line drug of choice. Another treatment option is the combination
therapy with trimethoprim/sulfamethoxazole.
Rohit et al. have reviewed the pathways of intrinsic cellular stress such as oxidative stress and autophagy, Endoplasmic Reticular Stress
(ERS) and mitophagy and apoptosis as fate in cell stress. They indicated that the stress responses are a hallmark of numerous degenerative
diseases including neurodegenerative diseases, diabetes, and cancer . Understanding the cross-talk between different intrinsic cell stress
responses will help to develop new therapeutic targets.
Taken together, the special thematic issue aids in therapeutic and biochemical targets and focused nature of rational pharmaceutical design.
I would like to thank all the authors and co-authors for their excellent contributions. Above all, I would like to acknowledge the support
from Dr. Kazim Baig, and Aamer M. Khan from Current Pharmaceutical Design publishing team for their endorsements in compiling this
issue. Considering specialized and superlative articles in the field of gastroenterology and pathophysiology, we hope that readers will find in this issue new broadways of research. As a guest editor(s), we would sincerely thank and acknowledge the diverse group of experts and colleagues
who offered their substantial reviewing efforts and suggestions.
The Thematic Issue summarizes the current progress in the development of novel approaches to diagnostics and therapy with special focus
on cell-based technologies. Identification of novel biomarkers and biologically active molecules is a rapidly developing and highly competitive
field. During the recent years, generation of tremendous amounts of functional omics data and establishment of chemical libraries
fueled the search for novel therapies for a wide range of human diseases. Screening and evaluation of potentially active substances and novel
biomarkers requires reliable, versatile and relatively cheap test systems. In many cases, the systems of choice are cell-based models that are
characterized by good reproducibility, fast operation time, relatively low cost and high flexibility. Recent literature provides numerous examples
of successful development and application of cell-based test systems for developing diagnostics and therapies for various types of cancer,
cardiovascular diseases, immune disorders and other pathologies. In addition, cell-based therapies and cell-based drug delivery systems are
very promising approaches.
This issue contains articles on various problems of translational medicine. Although a great number of promising therapeutic and diagnostic
approaches has been proposed during the recent years, most of these developments did not reach clinical use, some due to economic reasons,
the others due to the lack of proven effectiveness at different stages of clinical trials. In this regard, the important current task is validation
of therapeutic targets, synthesis and testing of candidate drug compounds.
Translational medicine is an interdisciplinary field of knowledge that determines the optimal mechanisms for introducing the most significant
achievements of basic science into clinical practice. Personalized medicine is one of the emerging branches of modern medicine that
opens interesting opportunities for improving the accuracy and clinical outcome of treatment of some of the most challenging human diseases
[1-3]. The authors of the reviews published in this special issue consider the problems of translational medicine in different fields, focusing on
cell diagnostics and therapy. Some of the developments presented in the reviews already find application in clinical practice, others will be in
demand in the near future. Part of the review articles describe advances in the design of drugs and deliver them to the therapeutic target.
Rui Lin, Shanshan Wang, and Wentian Liu (Chinese group) in their review “Protein-derived smart materials for medical applications:
elastin-like polypeptides” discussed the physicochemical characteristics of the elastin-like polypeptides and their applications in biotechnology
and medicine. Authors focused on the application of elastin-like polypeptides in drug delivery, protein purification, tissue engineering,
removal of heavy metals and endoscopic submucosal injection solution .
Tabeshpour et al. (Iranian group) in their review “Computer-aided drug design and drug pharmacokinetic prediction: a mini-review” focused
on computational drug design. “There are different types of software that can help predicting the pharmacokinetic profile of a drug.
Quantitative structure-activity relationship (QSAR) modeling is used for drug design with less cost. Drug-excipient interactions are predicted
by docking tools. Computerized drug target prediction and docking programs offer additional options to predict potential effects and adverse
reactions of a given candidate as well as the best orientation of the compound on the receptor active site.” Drug design software can predict
the pharmacokinetic profile of a drug and can help saving time and money .
T.A. Gudasheva, R.U. Ostrovskaya, and S.B. Seredenin (Russian group) in their review “Novel technologies for dipeptide drugs design
and their implantation” focused on advantages of dipeptides in designing of nontoxic, orally available, highly effective drugs for the therapy
of cognitive disorders. Two dipeptide drugs design approaches have been reviewed. “Both of them are based on the idea of a leading role of
central dipeptide fragment of the peptide chain beta-turn in the peptide-receptor interaction. The first approach, named "peptide drug-based
design" represents the transformation of known nonpeptide drug into its dipeptide topological analog. The latter usually corresponds to a betaturn
of some regulatory peptide. The second approach represents the design of tripeptoide mimetic of the beta-turn of regulatory peptide or
protein. The results of the studies, which led to the discovery of endogenous prototypes of the known non-peptide drugs piracetam and
sulpiride, are presented in their review” .
The review paper “Research potential of metabolomics in vitamin status assessment” by Yu. R. Varaeva, E.N. Livantsova, I.V. Ukrainets,
S.D. Kosyura, and A.V. Starodubova (Russian group) performs the potential usefulness of modern metabolomics methods in vitamin status
assessment. The authors discussed applicability of a personalized approach in the appointment of vitamins using modern metabolomics methods
I.A. Khlusov, L.S. Litvinova, M.Y. Khlusova, and K.A. Yurova (Russian group) in their review “Concept of hematopoietic and stromal
niches for cell-based diagnostics and regenerative medicine (a Review)” focused on the niche concept for hematopoietic stem cells and multipotent
mesenchymal stromal cells. Niche design is an approach to regenerative medicine and cell-based diagnostics. Authors speculated their definition of the stem cell niche, proposed and described certain stages (postulation; morphofunctional; topographical; quantitative; bioengineering)
of the niche theory development .
Novel approaches to the treatment of diseases are discussed in several review articles. In two review papers from China authors discussed
new treatment targets of atrial fibrillation. Li et al. in their review article “Mitochondria and the pathophysiological mechanism of atrial fibrillation”
focused on elucidation the casual relationship between mitochondria and atrial fibrillation. Moreover authors discussed potential
therapeutic target for the treatment and prevention of atrial fibrillation in clinical practice .
Ren et al. (Chinese group) in their review “The mechanisms of oxidative stress in atrial fibrillation” focused on discussion of the current
literature on the use of new treatment targets of atrial fibrillation. New treatment targets were elucidated after analyzing the relationship between
oxidative stress and Ca2+ .
International team from Qatar, Lebanon and USA have presented a review “Role of Methylglyoxal in Diabetic Cardiovascular and Kidney
Diseases: Insights from Basic Science for Application into Clinical Practice” by S. Sankaralingam, A. Ahmed, M. Rahman, A.H. Eid, and
S. Munusamy discussed potential of reducing methylglyoxal levels as a therapeutic strategy to counter the deleterious effects of methylglyoxal
in patients with diabetes. Several studies have shown that the use of methylglyoxal scavengers (such as aminoguanidine, Nacetylcysteine,
or metformin) or Nrf2/Glo1 activators (such as trans-resveratrol/hesperetin) to be useful in preventing methylglyoxal induced
renal and cardiovascular complications in diabetes .
A. Gasparotto Junior and F.A. dos Reis Lívero (Brazilian team) in their review “Cell-based therapy for hypertension: challenges and perspectives”
summarized data from research on cell-based therapy for hypertension and from relevant clinical trials. “Cell-based therapies may
be used as replacement or complementary treatment strategies. The results of recent preclinical studies of cell-based therapies are promising.”
Future perspectives of hypertension therapy and potent clinical applications were also briefly discussed .
Y.-L. Shen, X.-Q. Li, R.-R. Pan, W. Yue, L.-J. Zhang, and H. Zhang (Chinese group) in their review “Medicinal plants for the treatment
of hair loss and the suggested mechanisms” summarized data from trials in which medicinal plants were used in the treatment of hair loss
caused by androgenic alopecia. Alopecia can be treated with diverse hair loss strategies, including hair transplant, medication and cosmetics.
Authors discussed opportunities of Traditional Chinese medicines in hair loss treatments and possible mechanism of action .
Selcuk Ozturk and Y. Murat Elçin (Turkish team) in their review “Cardiac Stem Cell Characteristics in Physiological and Pathological
Conditions” discussed employment of cardiac stem cell for cardiac regenerative medicine therapies. There are two different types of cardiac
stem cells for transplantation: allogeneic and autologous cardiac stem cells. For allogeneic cardiac stem cells there is a risk for immune rejection,
whereas obtaining of autologous cardiac stem cells is time-consuming process. Cardiac stem cell have different characteristics in various
physiological and pathological conditions and knowledge about these properties can help in choice of the most qualified cardiac stem cell
populations for cardiac regenerative medicine therapies .
Aiello et al. (Italian group) in their review “Transcription of basic research into clinical practice: the case of killer immunoglobulin-like
receptors genes in autoimmune and infectious diseases” discussed research data of the role of killer immunoglobulin-like receptors/ human
leukocyte antigen interaction in human disease. Particularly, they assessed application of this knowledge in clinic trials. A growing body of
evidence implying the influence of killer immunoglobulin-like receptor variants and their interaction with the ligand in the development of
the main human viral and autoimmune diseases, highlighting the main applications in clinical practises was reviewed .
International team from Iran and UK in their review “Medicinal plants and atherosclerosis: A review on molecular aspects” by S. Gholipour,
R.D. Sewell, and M. Rafieian-Kopaei discussed the molecular mechanisms of medicinal plants effective on atherosclerosis. Various
molecular mechanisms include inflammation and other factors such as adiponectin, 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase,
peroxisome proliferator-activated receptor, ATP-binding cassette transporters ABCA1 and ABCG1, and sterol regulatory element-binding
Konoplyannikov et al. (Russian team) in their review “Mesenchymal stem cell therapy for ischemic heart disease: advances and challenges”
focused on preclinical and clinical studies on the application of mesenchymal stem cells in the therapy of ischemic heart disease.
“The mesenchymal stem cell advantages, strategies of their modification for improvement of their regenerative potential, opportunities of the
use of biomaterials as mesenchymal stem cell carriers are discussed in detail. The results of the most important preclinical and clinical studies
on the mesenchymal stem cell application in the ischemic heart disease therapy are presented” .
Finally, Orekhov et al. (international team of authors from Russia, Japan, Germany and USA) presented their study of the key master
regulator genes that control differentially expressed genes in macrophages exposed to modified LDL in the research article “Modified LDL
particles activate inflammatory pathways in monocyte-derived macrophages”. The main identified master regulators (IL-7, IL-15, CXCL8,
for example) participated in the inflammatory pathway and were not involved in the cholesterol metabolism pathway. The authors concluded
that activation of the inflammatory pathway may be the primary effect of modified LDL, and inflammatory signaling may initiate changes in the expression of lipid metabolism genes . Obviously, these results possess potential for further development diagnostics and therapies in
the field of chronic inflammatory diseases.
Thus, in this special issue, a team of international experts discuss the most novel topics relating to the problem of translational medicine.
We would like to thank the contributors to this issue for their participation. We hope that this issue will be helpful for the development of
novel cell-based diagnostics and therapy.
Abstract: This article summarizes several contributions on the coronary microcirculation. Many of the participant authors belong to the
Working Group on Coronary Pathophysiology and Microcirculation of European Society of Cardiology. These contributions explored a variety
of topics pertaining to coronary microvascular physiology and pathophysiology. The latest methodologies that are being used to investigate
the coronary microvasculature, including myocardial contrast echocardiography, fractional flow reserve and and instantaneous wave free
ratio, are discussed. Advances in the mechanisms of dysfunction of the coronary microcirculation - for example, enhanced arginase activity
and production of free radicals by dyslipidemia or hyperhomocysteinemia and its myogenic and flow-dependent responses--are reported. The
articles touched on the relation of the microcirculation to clinically important conditions, such as the coronary no reflow phenomenon and
offered recommendations for future research in important areas, such as angiogenesis and restoration of the microvascular network. This research
is providing new ways to explore abnormalities of myocardial perfusion and its relationship with post infarction myocardial damage,
an area of inquiry that until recently has been limited to examination of coronary pressure-flow relationships using doppler wire-based measures.
Keywords: Microcirculation, no reflow, vasospastic angina, myocardium, angiogenesis, dyslipidemia.
THE MICROCIRCULATION AND THE HEART
The coronary microcirculation has the significant function of maintaining the proper balance between oxygen supply and oxygen demands.
To accomplish this task the resistance vessels of the heart integrate the input from many intrinsic vasodilator and vasoconstrictor signals.
The goal is to discuss the innumerable outside inputs in the context of their actions on coronary blood flow and coronary resistance vessel.
Many pathophysiological disturbances may alter the regulatory processes within the coronary microcirculation. Many are the clinical
conditions that can be associated with microcirculatory disorders including ischemic heart disease.
RECENT PHYSIOLOGICAL FINDINGS AND CLINICAL ASPECTS OF THE CORONARY MICROCIRCULATION
We refer the reader first to the papers by Axel R. Pries et al.  and Lucian Calmac et al.  for a detailed discourse on regulation of
microcirculation in patients with stable coronary artery disease. It has become increasingly apparent that microvascular dysfunction can aggravate
tissue hypoxia and maintain a compromised state even after recanalization of the epicardial vessels. Single-photon emission computed
tomography performed six months after Percutaneous Coronary Intervention (PCI) in normocholesterolemic patients shows reversible perfusion
defects in 3% of patients treated with pravastatin and in 29% of those with placebo . These data supports the hypothesis of a protective
vascular action of statins on an otherwise compromised coronary microcirculation.
Generally, small arterioles respond differently than larger arterioles and small arteries. However, there are neural interactions between
small and large arteries, and arterioles which may account for some similarities in the development of coronary tone abnormalities in both the
epicardial and endocardial segments. The epicardial and intramyocardial coronary arteries are densely innervated by postganglionic sympathetic
and parasympathetic nerve fibers. Therefore, norepinephnne and acetylcholine released from these fibers interact with coronary adrenergic
and muscarinic receptors to control coronary vascular resistance. The paper by Edina Cenko et al. clearly shows that the microcirculation
is still the major culprit in patients having vasotonic angina or diffuse coronary epicardial artery spasm . The primary cause of coronary
vasospasm is coronary hyperreactivity that is commonly due to a deficiency in endothelial nitric oxide. Oxygen-derived free radicals
scavenge and rapidly inactivate nitric oxide, thereby promoting coronary endothelial dysfunction and constriction of both the large and small
coronary arteries even in myocardial sites remote from the ischemic region . Further mechanisms that contribute to the regulation of coronary
blood flow include the metabolic activity of the myocardium. The papers by Akos Koller et al.  and Teresa Padro et al.  show that
hyperhomocysteinemia and dyslipidemia may affect myocardial cellular function of the resistive vessels. The pathogenic mechanisms underlying
the relationship between microvascular dysfunction and dyslipidemia involve an enhanced arginase activity and production of free radicals
with recruitment and accumulation of leukocytes through their diffusion in the post-capillary venules. Hyperhomocysteinemia dependent
mechanisms seem to preferentially modulate tone in small arteries by increasing the uptake of glucose and lactate and decreasing the uptake
of free fatty acid by the heart. Metabolic control mechanisms seem the most important, because they link flow to metabolism and are involved
in ischemic vasodilation.
Many of the well-accepted risk factors for no-reflow are the traditional cardiovascular risk factors, such as hypertension, smoking,
dyslipidemia, diabetes, and other inflammatory processes. The most important seems to be hypercholesterolemia . As such, in individuals
with hyperlipidemia, intensive statin therapy before PCI is beneficial in reducing no-reflow. In a meta-analysis of 7 studies that examined
3,086 patients treated with statins before PCI, there was a complete prevention of no-reflow in 4.2% of patients treated with high dose statins,
compared with control patients receiving placebo, usual care, or lower dose statin therapy . Coronary no-reflow phenomenon occurs when
cardiac tissue fails to perfuse normally despite opening of the occluded vessel. The paper by Marialuisa Scarpone et al.  demonstrates that
often after prolonged occlusion the cardiac tissue did not recuperate normal perfusion despite opening of the large epicardial coronary arteries,
indicating that prolonged ischemia leads to damage of the microvasculature and precludes normal perfusion. The mechanism by which
prolonged occlusion triggers the damage to the microcirculation is still unclear. Some recent work has suggested a role for the endothelial
glycocalyx. The Endothelial Glycocalyx (EG) is an uneven soft polysaccharide coating over the vascular wall toward the vessel lumen.
Changes in the glycocalyx lead to the alteration of the transendothelial permeability, thereby causing the swelling of the endothelial cells,
which is one of the regulatory factors for functional capillary density. Rapid development of myocardial tissue edema may facilitate the impact
of vasoactive peptides such as endothelin and angiotensin on the microcirculation, which, in turn, may deteriorate vessel diameter and
flow, leading to the no reflow as illustrated by Evangelos Oikonomou et al. .MEASUREMENTS OF THE CORONARY MICROCIRCULATION
Although the focus of this special issue of Current Pharmaceutical Design is on the regulatory mechanisms of the microcirculation and
their translation to targets in clinical practice, it is important as well to highlight some methods that may be able to assess the distribution and
regulation of resistance vessels across the wall of the left ventricle in clinical practice . A number of noninvasive modalities are able to
accurately assess microvascular dysfunction as shown by the paper by Danijela Trifunovic et al. ; however, these are not readily available
in the catheterization laboratory and can be challenging to use in acutely ill patients, as those presenting with no reflow after PCI. For these
reasons, there has been long-standing interest in developing invasive methods for assessing microvascular function in the catheterization laboratory.
A number of Doppler wire-based measures are described by the paper of Sasko Kedev et al. . The findings from this study confirm
those of previous studies showing that Fractional Flow Reserve (FFR) and instantaneous wave Free Ratio (iFR) measured at the time of
catheterization correlate with evidence of microvascular dysfunction on noninvasive imaging.
With this background in mind, it is interesting to read the reports by Davor Milicic et al.  and Zorana Vasiljevic et al. . These
papers focused on the role of microcirculation in congestive heart failure. Still, there is no solid proof to directly correlate coronary microvascular
dysfunction to heart failure in human patients to date, which is probably due to the lack of proper models and the need for more advanced
finer techniques. Much more importantly, there is no single drug regimen that could effectively reverse cardiac dysfunction after
myocardial infarction. The paper by Lina Badimon et al.  offers an overview of the relationship between angiogenesis and the coronary
microcirculation. The restoration of the microvascular network, which has been damaged during ischemia as well as upon reperfusion, appears
a promising approach to refrain the deleterious effects of coronary obstruction. Monocytes can trans-differentiate into endothelial celllike
promoting angiogenesis. In rodents, both growth factors and cell therapy can induce angiogenesis. However, uncertainties and controversies
still remain. In this regard, the most common questions are: what type of cells can be primarily regenerated by angiogenesis: myocytes or
endothelial cells? Are these cells able to strengthen cardiac performance? The answers to these questions may largely addresses our difficulty
in understanding the mechanisms underlying the restoration of the microvascular network as well as myocardium after myocardial infarction.
Human trials performed to stimulate angiogenesis in patients undergoing primary PCI have mostly failed. Investigating thoroughly the potential
of different subsets of monocytes/macrophages in angiogenesis promotion, as well as the study of their receptors are needed to develop
and optimize future therapies aimed to restore myocardial function after ischemia.
In summary in this issue of Current Pharmaceutical Design, we summarized several aspects of control mechanisms that govern the level
and the size of the coronary microcirculation: endothelial and myogenic control mechanisms in the coronary microcirculation and the translation
in their clinical counterparts.
Current Approaches to Diagnostics and Therapies of Chronic Diseases: Focus on Molecular and Cell Biology
Chronic diseases, also known as non-communicable diseases, are long-lasting complex disorders. Worldwide, millions of people die each
year from chronic diseases including cardiovascular, neurological, lung diseases, type II diabetes mellitus and cancer. This cause of death
increases in rate both in developed and developing countries [1-3].
Chronic diseases are often characterized by similar features, such as pathophysiological mechanisms and molecular alterations. Reactive
oxygen species production causing oxidative stress, mitochondrial dysfunction, inflammation, accumulated DNA damage, dysregulation of
autophagy are the common features of many chronic diseases [4-6]. During the recent years, the search for new therapeutic targets for the
treatment and diagnosis of chronic diseases led to the discovery of novel biomarkers and therapeutic targets. Thus, current approaches to diagnosis
and therapy of chronic diseases are based on the researches in the fields of cell and molecular biology.
This special issue is focused on diagnosis and therapy of chronic diseases such as cancer, renal fibrosis, inflammatory bowel diseases,
diabetes, atherosclerosis and others. The presented review papers authored by international experts in the field describe the current knowledge
on therapy of chronic diseases and propose some unusual approaches such as traditional Chinese medicine.
Fu et al. in their review “The anticancer effect of Sanguinarine, a review” discussed the anti-cancer properties of alkaloid sanguinarine.
Sanguinarine possesses anti-inflammatory, proapoptotic, antioxidant and growth inhibitory activities on tumor cells. “This paper describes
various anti-cancer mechanisms, such as inhibition of erroneously activated signal transduction pathways, apoptosis and inhibition of tumour
cell proliferation, exhibited by sanguinarine” .
Sun et al. in their review “Individualized Tacrolimus Therapy for Children with Nephrotic Syndrome: Mind both the Ontogeny and
Pharmacogenetics of CYP3A” have focused on individualized tacrolimus therapy for children with nephrotic syndrome. Authors discussed
the role of ontogeny and genetics in the individual dosing regimen of tacrolimus, whereas current guideline has recommended that the tacrolimus
dosage should be adjusted according to the Cytochrome P450 3A5 genotype (i.e. genetics) .
International team from UK and China have presented a rather unusual review “Chinese herbal formulas and renal fibrosis: An overview”
by Shen et al. have focused on the therapy of renal fibrosis by Chinese herbal formulas of traditional Chinese medicine. It has been shown
that Chinese herbal formulas can act as anti-fibrosis agents due to their anti-oxidant, anti-inflammatory and anti-proliferative properties.
“Chinese herbal formulas are determined according to traditional Chinese Medicine theory and this review highlights these formulas and suggests
a possible mechanism for their use in the treatment of renal fibrosis” .
International team from Saudi Arabia and China in the review paper “IRW and IQW attenuate induced-1 DSS inflammatory responses in
colitis mice” by Ma et al. focused mainly on the antibiotics therapy of inflammatory bowel diseases and discussed alternative therapy with
bioactive peptides (IRW and IQW). The effects of bioactive peptides on intestinal inflammation were described. “Intracolic administration of
IRW and IQW might be a novel option for preventing inflammatory bowel disease via regulating the level of serum amino acid and enhancing
the intestinal immune defense” .
International team of authors from UK and Iran have presented a review paper “Immunosuppression-lipid metabolism interplay and medicinal
plants in atherosclerosis: a review” by Moradi et al. focused on medicinal herbs treatment of atherosclerosis. The authors described
the most important medicinal herbs effective on atherosclerotic lesions through impact on the immune system. Effects of such medicinal
herbs as garlic, Ginkgo biloba, Quercus infectoria, Astragalus mongholicus Bunge and others were discussed .
Diemberger et al. (Italian group) in their review “Meta-analysis of sinus rhythm restoration and maintenance by electrical cardioversion
or catheter ablation in patients with chronic kidney disease: atrial fibrillation recurrences, thromboembolic events and modification of glomerular
filtration rate.” discussed non-pharmacological treatments for sinus rhythm restoration/maintenance by electrical cardioversion and
catheter ablation in Chronic kidney disease patients. Efficacy of such therapy for Chronic kidney disease patients and non-сhronic kidney
disease patients was compared .
Yamagishi and Matsui from Japan in their review “Therapeutic potential of DNA-aptamers raised against AGE-RAGE axis in diabetesrelated
complications” focused on discussion of the current literature on the therapeutic potential of DNA-aptamers raised against the advanced
glycation end products - a receptor for advanced glycation end products (AGE-RAGE) in various diabetes- and aging-related disorders.
Particular attention was paid to diabetes-associated complications, especially focusing on vascular complications of diabetes and cancer
International team from the USA and Russia in the review paper “Approaches to the NK cell modification for anti-tumor immunotherapy”
by M.A. Streltsova et al. focused on the therapy by the genetically modified natural killer cells. Authors compared the efficiency of recognizing
and destroying tumor targets by the genetically modified natural killer cells in comparison with the therapeutic T cells. The perspectives
and advantages of various approaches to modification of natural killer cells were discussed .
International team of authors from UK and China (Xiao-Qin Li et al.) in their review “Chemical constituents and pharmacological activities
of Stellera Chamaeja” discussed anti-tumor effects of Stellera Chamaejasme. Authors mainly focused on the pharmacological properties and the chemical composition of S. Chamaejasme. The authors hypothesize that S. Chamaejasme has anti-tumor activity. They discussed antiliver
cancer activity anti-lung cancer activity anti-leukemia activity and others .
International team from Pakistan, Saudi Arabia, Qatar and USA (Kaneez et al.) in their review “The dual specificity role of transcription
factor FOXO in type 2-diabetes and cancer” summarized information about the biology of Forkhead box O transcription factors. “The Forkhead
box O transcription factors are implicated in several signaling pathways and play a vital role in various cellular and physiological processes
include, for instance, ROS (reactive oxygen species) response, cell proliferation, regulation of programmed cell death, longevity, metabolism
and cancer and regulation of cell cycle.” These proteins can be used for elaborating on novel therapeutic approaches to treat cancer
The review “Sulfur mustard-related ocular complications: a review of proteomic alterations and pathways involved” by Panahi et al. from
Iran is focused on eye injuries caused by sulfur mustard. Sulfur mustard causes deficient of iron-dependent regulations and pathological
changes in vascular endothelial growth factor expression. Furthermore, sulfur mustard related proteomic alterations and the association of the
found proteins with other eye disorders and diseases were reviewed .
The remaining articles of this issue are devoted to current approaches to diagnostics of chronic diseases, new diagnostics targets were also
Yuan et al. (Chinese group) in their review “The Mechanism of Exosomes Function in Neurological Diseases: a progressive review” discussed
potential mechanisms of exosomes function in neurogenesis, angiogenesis and BBB delivery and differentiated various sources of
exosomes in traumatic brain injury, Alzheimer’s disease, stroke and tumor. Moreover, authors focused on the potential application of
exosomes in diagnostics and treatment of various diseases .
Hassan et al. (Iranian group) in their review article “The role of epigenetic alterations involved in sepsis: An overview” focused on the
diagnosis of sepsis based on detection of epigenetic alterations (DNA methylation pattern, histone modification). Authors also discussed drug
targets validation for the treatment of sepsis. “Epigenetic mechanisms can provide a highly sensitive and accurate method for sepsis diagnosis
using blood and other body fluids” .
Karagodin et al. (Russian group) in their review “Diagnostics and Therapy of human diseases - Focus on sialidases” discussed diagnostics
of sialidase-related disorders such as sialidosis, cancer, atherosclerosis and others. Therapeutic approaches by sialidase inhibition were also
discussed. “Sialidases are involved in the pathogenesis of a whole range of diseases, so the knowledge and expertise gained from genetic
defects leading to human sialidase inhibition can be used in the design of the drugs. In vitro studies suggest that some sialidase inhibitors
might be useful therapeutics for treating sialidosis, cancer, infections, immune diseases, atherosclerosis and other pathologies” .
Prasad from Canada in his review “Does HbA1c Play a Role in the Development of Cardiovascular Diseases?” compared diagnosis of
diabetes by hemoglobin A1c and advanced glycation end products. Hemoglobin A1c is considerate as a useful marker for the diagnosis and
management of diabetes. Author concluded that advanced glycation end products cannot replace HbA1c in the diagnosis of diabetes because
there is no correlation between advanced glycation end products with serum glucose .
A research article “Tumor necrosis factor-α and C-C motif chemokine ligand 18 associate with atherosclerotic lipid accumulation in situ
and in vitro” by Orekhov et al. (Russian team) describes the expression of tumor necrosis factor-α and C-C motif chemokine ligand 18 under
the accumulation of intracellular cholesterol in atherosclerosis. Authors assumed that the accumulation of intracellular lipid induces pro- and
anti-inflammatory responses in the arterial cells. Authors did not discuss the direct clinical implementation of their results; however, perspective
to use these results in the development of diagnostics of atherosclerosis and anti-atherosclerotic therapy is obvious .
We hope that the presented thematic issue will be of interest to our readers, as well as helpful for generalizing the current knowledge in
various areas of clinical science.
Gene therapy is a promising approach to treat chronic and acquired diseases because it allows the regulation of a gene sequence that is
identified as benefitial or detrimental to the proper functioning of the organism. By gene therapy it is possible to repair, replace, add or silence
the target gene. In this special issue, gene therapy involving gene silencing by the RNA interference (siRNAi) mechanism will be presented
and discussed as a promising therapeutic strategy for a wide variety of diseases; however it has not become clinically available yet because
some shortcomings still need to be addressed for effective delivery, for instance, the instability and poor cellular uptake of RNAi molecules.
Taking this into account, in our special issue, Kumavat et al. reviewed the nanotechnology aspects applied for the delivery of RNAi at the
targeted site with fewer off-target effect and high stability. The manuscript also expounds on various types of nanoparticles, associated challenges
and modalities to overcome the same with potential biomedical applications. A special emphasis ongoing clinical trials, regulatory and
safety status has also been presented . In addition, main challenges of topical delivery approaches mainly are related to the delivering of
siRNA into skin due to the highly effective defensive skin barrier function, the high molecular weight of siRNA and also to the net siRNA
negative charge under physiological conditions and the need to cross the negatively charged cell membrane. The development of siRNA delivery
systems that overcome one or more of these limitations improves the efficiency of gene silencing. Thus, an update on the advances in
topical siRNA-based non-viral delivery systems to prepared carrier molecules able to mask siRNA-negative charges, compress siRNA molecule
to make it smaller and protect siRNA from degradation as a powerful therapeutic strategy for several skin diseases are deeply discuss by
Rosa et al. . The targeting liposomes containing siRNA to overexpressed receptors of cancer cells that represents a strategy for better
therapeutic outcome, with improved efficacy and reduced toxicity were herein discuss by Eloy et al. . Considering that efficient delivery of
siRNA to the target tissue is a major challenge, the liposomes could be functionalized with several chemical moieties that can be recognized
by cancer cells more than by normal cells. These ligands include folate, transferrin, peptides, oligosaccharides, monoclonal antibodies and
aptamers. In this article, the authors describe chemical functionalization strategies and address the major in vitro and in vivo findings in the
field of cancer treatment. Thereafter, Yoko Endo-Takahashi et al. summarize the Ultrasound-mediated nucleic acid delivery systems and discuss
the possibility of combining liposome and ultrasound for RNAi-based therapies . Emerging platform for siRNA delivery from
hyaluronic acid (HA) is also discussed in this issue by Shah et al. . This biopolymer offers a variety of properties such as biodegradability,
biocompatibility, aqueous solubility, viscoelasticity, and non-immunogenicity. Numerous HA-based nano-vector delivery systems such as
polymeric nanoparticles, liposomes, and others when hybridized with siRNA, have been delivering this genetic material safely and efficiently
overcoming the stability problem. This review aimed to uncovers the HA and HA hybridized nanoplatforms for siRNA delivery systems with
particular focus on the discussion of available reports with addressing the future potential of this combination. In the last article of this issue,
Marinho et al. shows the use of gene therapy of RNAi targeting transcription factors involved in Ischaemia-reperfusion injury, the crucial
choice of siRNA targets and the advantages and problems of the siRNA use for preventing liver Ischaemia-reperfusion injury during transplantation
are also highlight . Moreover, the authors discuss how the use of liposomes contributes to the improvement of siRNA therapy by
increasing siRNA stability in vivo and avoiding siRNA off-target effects. Finally, we, the guest editors, would like to thank to Current Pharmaceutical
Design publishing team, specially Dr. Kazim Baig for their help and patience, and to the authors for their excellent contributions,
and to the guest-reviewers given your expertise in this area, they contributed to this special issue quality.
Abstract: Depressive disorders affect more than 300 million people all over the world and 16% of US population. Depression is also the
leading cause of disability worldwide and a major contributor to the overall global burden of disease. The first antidepressant was approved in
the 1950s. In 2013, antidepressants became the most commonly prescribed drugs in the United States. However, the diagnosis and treatment
of depression is changeling since depression is a rather heterogeneous disorder with various co-occurring symptoms and divergent responses
to treatment. In this theme issue, we brought together 12 papers written by the leading scientists from all over the world. The special issue
was divided into 4 sections. The first set of papers explored topics in the precision medicine of depression. The next section was about the
application of pharmacometabolomics on the discovery and development of new antidepressants. In the third section, we had a series of papers
focusing on the status of current and future antidepressants. The final section described the alternative therapy for depression. This theme
issue added our understanding of the diagnosis and treatment of depressive disorders.
Keywords: Depression, neuroimaging, antidepressants, metabolomics, fast-onset, medicinal plants, nutrition, Ayurveda
PRECISION MEDICINE IN DEPRESSION
Precision medicine, the capacity to really tailor treatments to specific populations and individuals, is a novel approach for the treatment of
depression. The effective treatment would only be achieved through the diagnosis and precise classification of depression subtypes. Magnetic
Resonance Imaging (MRI) is an especially useful modality for depressive disorders due to its high resolution for soft tissues such as the brain.
In the first 2 papers of this theme issue, Song, et al.  and Qiu, et al.  reviewed the recent advances for the diagnosis of depression and
the evaluation of treatment response using MRI. The selection of antidepressant choices relies on the development of new techniques for
measuring antidepressants. Mansour et al.  developed a simple, fast and sensitive method to determine venlafaxine in biological fluids
and pharmaceutical formulations using just a pH meter and ion-selective electrodes.
PHARMACOMETABOLOMICS IN THE DEVELOPMENT OF NEW ANTIDEPRESSANTS
Pharmacometabolomics aims to assess the metabolic effects of the pharmaceutical treatment. With the technical advances in analytical
instruments, metabolomics is entering into a “new generation”. Jian, et al.  summarized the broad applications of Next-Generation Metabolomics
(NGM) in facilitating the discovery and development of antidepressants. Albiflorin was used as an example to illustrate how
NGM improves our understanding of drug candidate actions and facilitates drug safety evaluation.
CURRENT AND FUTURE ANTIDEPRESSANTS
Pharmacotherapy is the main treatment approach for depression. Antidepressants have become the most prescribed drugs in the U.S.
Amidfar and Kim reported the selective agonists and antagonists of 5-HT receptors in the treatment of major depression . Sleep disorders
are the core symptoms of depression. Satyanarayanan, et al. reviewed the pharmacologic interventions targeting on circadian rhythm and
melatonin receptors . The majority of current antidepressants are limited by their slow action. The conventional antidepressants can take as
long as six weeks to have an effect. Potentially safe and fast-acting interventions would be invaluable. Jeff, et al.  and Kuo, et al.  discussed
the molecular mechanisms of the promising fast-onset antidepressants. Depression is the most common neuropsychiatric illness associated
with Parkinson disease (PD). Kabra and the co-authors reviewed the emerging and alternative therapies for the treatment of depressive
patients with PD .
ALTERNATIVE THERAPY FOR DEPRESSION
The current synthetic antidepressant drugs have limited efficacy and might undesirable side effects. Dietary improvement may provide an
efficacious and accessible treatment strategy for depression. Xu, et al.  summarized the recent advances in nutrition for the treatment of
depressive disorder. The use of complementary therapies is gaining popularity. Le, et al.  highlighted the psychotherapy of cancer patients
with the secondary depressive disorder. Indian Ayurveda is one of the most ancient medicine in the world. Sharma and the co-authors 
reviewed the herbal and holistic solutions of Ayurveda for depression. Ismail, et al.  described some important medicinal plants and their
reported active constituents with antidepressant activity.
This special issue covers all the major aspects related to the diagnosis and treatment of depression. Both the guest editors and all the
authors hope that the special issue will help the readers quickly grab the recent advances in this field. Moreover, the critical visions from the
contributors in this special issue would motivate other scientists to develop more effective treatments for major depressive disorders in the
Crystallization is defined as the process in which solid crystal is precipitated from a fluid media (i.e. vapor, solution or melt). It has been
widely applied in many areas including pharmaceuticals, fine chemicals, functional materials, agrochemicals and foods. Generally, it can be
used to prepare high quality crystal substance by crystallizing it from a fluid media or to concentrate substance in fluid media by precipitating
In recent years, crystallization science and technology have received a lot of attention, especially in the field of development of new drugs
and foods. The crystallization technology of drug products is common with that of food products (food additives, functional foods, etc) in
many aspects. The works mainly focus on the molecular mechanisms of crystallization, new crystallization methods of active pharmaceutical
ingredients and food ingredients, development of novel characterization technology of crystals and crystallization process, application of
crystallization in the field of pharmaceutical and food science and industry.
Thematic Issue “Crystallization for Pharmaceutical and Food Science” of Current Pharmaceutical Design is a platform to discuss the
development and application of crystallization for pharmaceutical and food science. Marco Stoller et al. discuss process intensification techniques
for the production of nano- and submicronic particles for food and medical applications . Na Wang et al. introduce cocrystal and its
application in the field of active pharmaceutical ingredients and food ingredients . Nandi Chen et al. summarize the properties and the
applications of existing soft biomaterial-based nanocrystal in pharmaceutical . Hyerim Yang et al. review the pharmaceutical strategies for
stabilizing drug nanocrystals . Yanan Zhou et al. analyze the effects of polymorphism on physicochemical properties and pharmacodynamics
of solid drugs . Lek Wantha summarizes the kinetics of the solution-mediated polymorphic transformation of organic compounds .
Leming Sun et al. summarize the recent trends in nanocrystals for pharmaceutical applications . Daisy Arora et al. introduce recent advances
in nanosuspension technology for drug delivery . Mingxue Fan et al. review nanocrystal technology as a strategy to improve drug
bioavailability and antitumor efficacy for the cancer treatment . Cao Wu et al. summarize the preparation, precise control, and application
of nanocrystals toward the pharmaceutics and foods industry . Qi Zhang et al. summarize recent advances in magnetic nanoparticle-based
molecular probes for hepatocellular carcinoma diagnosis and therapy . Preshita P. Desai et al. summarize crystal engineering approaches
for the design of pulmonary delivery systems . Chandrakant R. Malwade et al. introduce process analytical technology for crystallization
of active pharmaceutical ingredients . Jaleh Varshosaz et al. review crystal engineering techniques for enhanced solubility and bioavailability
of poorly soluble drugs . Zhongyao Cheng et al. provide a comprehensive review on nanocrystals technology in the field of pharmaceutical
science and biochemical engineering . J. R. Campos et al. analyze the phase behavior of polymorphic fats in drug delivery
Editing this Thematic Issue for Current Pharmaceutical Design has been a great honor for us. We appreciate very much the invitation of
Prof. William A. Banks, and kind support from the staff members of Current Pharmaceutical Design. Our special thanks goes to Director
Kazim Baig for his continuous support during the whole process. In addition, we would also like to thank the authors for such grand writing
and the reviewers for their careful and diligent peer-review.
Oxidative stress, antioxidants and disease. One of the most fundamental challenges to prevention and management of disease-associated
tissue damage occurring as a result of oxidative stress, in particular, excessive activation of inflammatory processes, is the requirement to
counteract the effects of highly reactive biomolecules, typically containing single unpaired electrons on oxygen atoms. These compounds,
called reactive oxygen species (ROS), rapidly alter structure and chemistry of proteins, lipids, nucleic acids and other components of cells in
ways that may severely disrupt cellular metabolism, causing oxidative damage to affected tissues, which manifest as symptoms of a disease
. Numerous antioxidant compounds, most often produced by plants, (phytochemicals), are capable of quenching ROS activity to levels that
significantly augment health. Thus, aqueous-soluble antioxidants like vitamin C, and the lipid-soluble tocopherols (vitamin E), are necessary
components of human diet  and may positively affect prognoses of some diseases , but lack the stand-alone potency to definitively safeguard
against disease-associated oxidative tissue damage. This is due to the way such phytochemicals are utilized systemically. Such dietary
supplements, distribute into the interstitium, but mostly fail to achieve sufficient levels inside cells, to thoroughly counteract whole-organism
oxidative damage. As a consequence, endogenous defenses such as glutathione, and other antioxidant compounds active within cells, are often
overwhelmed by elevated ROS levels, which are a prominent feature of many diseases . For this reason, use of dietary supplements is
ineffective as a primary preventive or therapeutic countermeasure against any disease at the time of this writing, with the exception of disorders
such as scurvy, which develop as a result of deficiency of a dietary component (vitamin C) .
Current drug treatment doctrine: Major drawbacks. Current doctrine in pharmacotherapy for most disease states, has become reliant on
small molecule compounds such as corticosteriods and Non-Steroidal Antiinflammatory Drugs (NSAIDs), which may act intracellularly to
counteract a specific process – such as activity of a particular enzyme, critical for progress of a disease. Unfortunately, such interventions
impose artificial alterations on normal physiology, which may interfere with cell signalling vital for healthy homeostasis, with significantly
deleterious consequences. A well-known example of such an occurrence, was the case of Vioxx (Rofecoxib), that proved to be an excellent
analgesic due to its ability to block activity of cyclooxygenase 2 (COX-2) and resulting pain-inducing prostaglandin synthesis, but resulted in
cardiotoxic downstream effects that were occasionally fatal .
Heme oxygenases and novel approaches to pharmacotherapy. An emerging alternative strategy in current drug treatment approaches, is
use of benign, Generally Regarded As Safe (GRAS) compounds (most often phytochemicals) that amplify the strength of endogenous cytoprotective
mechanisms and mostly or completely avoid use of molecules that may interfere with normal cellular metabolism as an adverse
side reaction. Modulation of Heme Oxygenases (HOs), a heat shock protein (hsp) enzyme which is a primary defense against oxidative stress,
offers enormous promise for such an approach. HOs are produced by all animal cells studied at the time of this writing and are active in both
extracellular (eHO) and intracellular spaces (iHO) . The present special edition of Current Pharmaceutical Design (CPD) reviews the major
structural and functional properties of these fascinating stress response proteins, in the context of their capacity to protect against a diverse
range of pathological conditions in which particular diseases states may damage a host by imposing excessive oxidative stress on its component
tissues. The topic material considered in the present review, examines the putative role played by heme oxgygenases in maintenance of
normal homeostatic function and extends this insight to describe mechanisms by which their bioactivities constitute a core adaptive response
to various forms of trauma. HO function is here illustrated for several disease states, with focus on cardiovascular, neurologic, neoplastic and
immunoregulatory processes. This very exciting subject material is presented in the form of 11 essays by researchers and clinicians from
around the globe, who have emerged as leaders in their respective branches of biomedical science and are providing unprecedented insight
into the diverse means by which these enzymes may be exploited clinically.
Essays within this special edition: topic summaries. Dr. Daniel Bereczki Sr. at Department of Neurology, Semmelweis University in Budapest,
and Dr. Daniel Bereczki Jr, at the Department of Neurology, Hungarian Defence Forces Medical Center, along with Dr. Jozsef Balla
at the Institute of Internal Medicine, University of Debrecen, in Hungary, describe the clinical relevance of heme oxygenase-1 (HO-1) in
ischemic stroke ; a team of authors led by Prof. Vladislav Chernov at the Institute of Fundamental Medicine and Biology of Kazan Federal
University in Russia analyze mechanisms by which membrane components of mycoplasmas, an important class of human pathogen, affect
inflammation by modulating Nrf2 signaling – a pathway that includes hemе oxygenases ; Drs R. Clive Landis, Kim Quimby and André
Greenidge at UWI’s Edmund Cohen Laboratory for Vascular Research in Barbados, describe how Nrf2/HO-1 signaling in macrophages influences
differentiation of these cells to affect the pathogenesis of diabetic nephropathy ; Mark F. McCarty, founder and CEO of Catalytic
Longevity, in San Diego, California, describes how the spirulina chromophore, phycocyanobilin (PhyCB) a structural analog of the HO degradation
product biliverdin,and antioxidant potency in the same range as bilirubin may be combined with phase 2-inducer nutraceuticals for
prevention of opiate tolerance  – and in a second essay, reporting on a research initiative led by Dr. Iloki Assanga Simon Bernard at University
of Sonora in Hermosillo México, outlines a possible role for these enzymes in mitigating the severity of preeclampsia ; A U.S.-
German team led by Harvard Medical School Professor Leo Otterbein provides a cautionary note to expectations over the past two decades,
that strategies for inducing and regulating heme oxygenases will rapidly evolve into clinical tools with widespread use. Their essay outlines
the enormous promise such methods hold for healthcare improvements, but emphasizes the limitations of this technology and the slow pace at
which its implementation has proceeded ; Authors in the laboratory of Dr. Ana Lúcia S. Rodrigues at Brazil’s Federal University of Santa
Catarina provide state-of-the-art insight into roles played by HO-1 in the underlying pathomechanisms of neuropsychiatric and neurodegenerative
diseases ; Another team of Hungarian researchers, led by Professor Attila Szöllősi at University of Debrecen, Medical School,
outline the participation of heme oxygenases on a wide range processes necessary for health of the skin, along with autoimmune, allergic and
neoplastic dermatological disorders ; A second Brazilian team in the laboratory of Professor Leonardo Travassos, at the Federal University
of Rio de Janeiro, describe the interplay of cellular signaling processes in which both HO-1 activity and autophagy are involved ; A
team of collaborating researchers, with members in the USA, Russia, Mexico, Hungary and Kuwait, outline the role of heme oxygenases in
the pathophysiology of Parkinson's disease (PD)– and a bold approach to treatment of the disorder by use of nanoparticles that potentially
decrease alpha synuclein aggregation – a primary driver of PD pathogenesis ; Finally, Dr. David Haines and Dr. Arpad Tosaki at University
of Debrecen, provide a description of the current understanding as to the role of heme oxygenases in maintenance of normal, healthy
function of cardiovascular cells, tissues and organs, further describing how activity of these enzymes influence cardiovascular syndromes and
Plants are natural reservoirs of a diversity of compounds, many of which have pharmacological/nutraceutical activities towards a variety
of diseases. One important class of plant bioactive compounds is polyphenols. The term phenol is used to describe a structure with at least one
aromatic ring containing one or more hydroxyl groups attached and the flavonoids, with several aromatic rings, represent a well-known subgroup
of bioactive polyphenols. Other compounds, including hydroxycinnamates and phenolic acids, with only one phenolic ring, are also
referred to as polyphenols. These phytochemicals occur naturally in plants and epidemiological, pre-clinical and clinical studies have shown
their importance for human health as they reduce the incidence and prevalence of cardiovascular diseases, cancer, diabetes, inflammation and
age-related disorders. Modern pharmacopeia has received significant input from natural small molecules (such as polyphenols); however, the
process of identifying novel bioactive compounds from biological sources has been a central challenge in the discovery of natural products.
Moreover, the exploitation of polyphenols as sources of molecules with pharmacological/nutraceutical interest depends on effective methods
for compounds extraction to be further tested as regards their chemical and biological activities. Additionally, the use of fractionation procedures
coordinated with bioactivity/antimicrobial screenings – bio-guided fractionation – is required for the identification of single compounds
with therapeutic potential. Once identified, the pharmacokinetics and modus operandi of compounds need to be gathered to support the rational
design and synthesis of medicinal chemistry derivatives. Alternatively, large-scale production of potential bioactive polyphenols can be
achieved by means of synthetic biology. At last, technologies of controlled delivery must ensure that the compounds are carried to the site of
action. The ultimate goal of this pipeline is to discover and make available to society therapeutic alternatives for chronic diseases including
cancer, neurodegenerative, cardiovascular, and metabolic diseases.
The thematic issue is a journey in the field of polyphenols as bioactive compounds for health, exploring the current strategies for identification,
characterization, improvement and production of these protective molecules.
Foito et al. described the state of the art methodologies used for structural elucidation and annotation of novel bioactive compounds .
An overview of the metabolomics toolbox available, from hyphenated Mass Spectrometry (MS) and Nuclear Magnetic Resonance (NMR)-
based analytical technologies, is described alongside with technical developments in instrumentation and data processing. In addition, the
authors explore the importance of the integration of these tools in the bioprospection and drug discovery workflows. Overall, the review assesses
the huge potential of metabolomics for application in the process of drug/bioactive discovery from plants.
The degeneration of neurons in specific brain regions is one of the main causes of chronic Neurodegenerative Diseases (NDs) and the
formation of aggregates of misfolded proteins has been considered a hallmark underlying the pathophysiology of these diseases. Kostelidou et
al. discussed the available microbial (bacteria and yeast) genetic screens and selection systems targeting NDs-associated protein misfolding,
which facilitate the identification of cellular factors and disease processes as well as the discovery of synthetic and natural compounds with
protective activities .
The simplest eukaryotic organism yeast shares fundamental biological processes with mammalian cells, including some processes associated
with human diseases. This feature allows the use of Saccharomyces cerevisiae as test-tubes to decipher the molecular mechanisms underlying
disease pathology as well as to accelerate the discovery of protective molecules. In addition, mammalian cell models have been widely
used in polyphenol research to identify/validate polyphenol bioactivity for chronic diseases. Rosado-Ramos et al. reviewed the use of eukaryotic
cell models of NDs and their contribution for the identification of novel bioactivities as well as the benefits and limitations of their use as
tools in the search for bioactive polyphenols .
The use of the nematode Caenorhabditis elegans has been largely explored in aging research and, more recently, to investigate the multifaceted
properties of polyphenols as protective candidates for aging-related conditions. In this issue, Papaevgeniou & Chondrogianni compiled
the studies addressing the anti-aging and neuroprotective potential of polyphenols using C. elegans as multicellular model organism .
Epidemiological evidence suggests that polyphenol-rich diets lower the risk of certain cancers whereas epidemiological, in vitro, in vivo
and clinical studies point to the fact that natural polyphenols can be potentially used for the prevention and treatment of cancer. Momtazi et
al. reviewed the effects of curcumin on nasopharyngeal cancer, a rare type of head and neck cancer that is mainly treated by radiotherapy .
Curcumin is a well-established polyphenol with chemosensitizing, chemotherapic and radiosensitizing effects and its chemopreventive potential
has been studied in a variety of cancers. The authors highlight recent studies showing that curcumin has therapeutic and radio-sensitizing
effects on cells as well their mechanism of action. Overall, the potential of using curcumin as co-adjuvant of chemotherapy
without secondary systemic toxic effects in humans is discussed. Besides cancer, the therapeutic benefits of curcumin have also
been described for inflammatory processes, immunological disorders, diabetes, and oxidative stress. The molecule has a unique molecular
structure that easily interacts with biomolecules like protein and enzymes, thereby impacting their function/activity. Hatamipour et al. discussed
the underlying mechanisms responsible for those chemical interactions of curcumin .
The cardiovascular system is another field where the protective activity of polyphenols is well documented, particularly for atherosclerosis,
hypertension, myocardial infarction, anthracyclin-induced cardiomyopathy, angiogenesis and heart failure. Santos et al. reviewed the
knowledge of the main pharmacological effects and mechanisms of cardioprotection mediated by polyphenols in the heart and vessels obtained,
from in vitro, animal and human studies .
Hydroxytyrosol and its derivatives from virgin olive oil are important phytochemicals with proved activity for lifestyle-associated pathologies
such as cancer, cardiovascular and neurodegenerative diseases, as indicated by the epidemiological evidence. Hazas et al. reviewed
their natural occurrence, metabolic fate and bioavailability as well as their health beneficial effects together with newest perspectives on the
mechanisms of action based on in vitro and animal studies . The authors concluded that hydroxytyrosol, and its derivatives, could have
potential clinical use in cardiovascular diseases. However, more epidemiological data is needed to evaluate their preventive effects for NDs
Diabetes is a chronic metabolic disorder associated with several comorbidities, including diabetic retinopathy (DR), and increased oxidative
stress in the retina seems to trigger the damage of both neuronal and vascular cells. Ola et al. reviewed the evidence pointing out the potential
metabolic sources and pathways related to the increase of oxidative stress in DR and the role of dietary flavonoids, particularly flavonones,
flavanols, flavonols, isoflavones, flavones and anthocyanins, in the modulation of redox homeostasis in the diabetic retina .
Given the myriad of bioactivities described for polyphenols, these molecules have emerged as lead compounds for the design and synthesis
of improved molecules with a therapeutic application for several diseases. Almeida et al. described how organic synthesis has been essential
for the development of these new analogs, providing a wide range of structural modifications for structure-activity relationship studies
and improving/modulating the biological activity of promising compounds .
The studies reviewed in this issue unequivocally show the potential of polyphenols to modify pathological processes associated with
chronic diseases and the efforts of organic chemistry to develop novel molecules with improved activity. Nonetheless, the majority of these
compounds are still obtained from plant material by means of costly and inefficient extraction procedures. Dudnik et al. reviewed the use of
metabolic engineering and microbial cell factories (Escherichia coli, S. cerevisiae, Corynebacterium glutamicum and Lactococcus lactis) as
emerging alternatives allowing efficient and sustainable production of protective polyphenols .
Overall, eleven outstanding international experts were invited to contribute to this thematic issue and to share their opinions, with perspectives
of polyphenol research for the advance in therapy for chronic diseases. We hope that the multidisciplinary topics discussed with the
theme issue will promote further discussion among pharmaceutical/nutraceutical industry and researchers.
As it is pointed out in this special issue of Current Pharmaceutical Design, despite the extensive and multidisciplinary research during the
last years, a lot of basic and clinical research is still needed to better understand the manifestations, central and peripheral molecular regulators
of new mechanisms of GI ulceration and healing, physiology, pharmacology and pathology, especially in relation to the classic modes
of prevention/management of gastrointestinal ulceration and healing or their transformation into new concepts and the treatment of gastrointestinal
ulceration and healing. This is particularly important for acquiring new vistas in the therapy of gastrointestinal tract disturbances.
Therefore, “New mechanisms of GI ulceration & healing: Physiology, pharmacology & pathology” attempts to cover a huge area of
the pertinent scientific research. Between various concepts, the Robert’s cytoprotection concept is still one of the most fascinating concepts in
science development, particular with respect to conceptual disagreements, or on the other hand, novel agents, and attempts to improve concept,
as well as to finally realize some or all of the concept postulates in gastrointestinal tract therapy. Therefore, it seems interesting to review
again this issue, covering a huge area, by eminent experts, providing their most recent findings, including the development of new medicines
and new approaches.
Bilski et al.  in their review Exploiting significance of physical exercise in prevention of gastrointestinal disorders revealed the particular
relationship between physical exercise with different intensity and alterations the morphology and function of the gut including its protective
influence on the lipid metabolism and chronic systematic inflammation as well as the diversity, distribution and metabolite of the gut
microbiota. Based on the evidence provided in this overview, the regular, moderate exercise can reduce the risk of colorectal cancer and exert
a beneficial effect on upper and lower GI-tract disorders such as reflux esophagitis, peptic ulcers, cholelithiasis, constipation and IBD leading
to the attenuation of the symptoms. On the other hand, the high-intensity training or prolonged endurance training can exert a negative influence
on these same entities .
Olsen et al.  in the review New approaches for weight loss: experiments in animal models emphasized the interesting points such as
animal models (i.e., VBLOC (implanted hunger-blocking device) and knockout of muscarinic acetylcholine M3 receptor) known to reduce
food intake and body weight versus the expression of energy-balance regulating peptides in the hypothalamus as a drive for increased food
intake. Finally, emphasizing that the brain-gut axis plays an important role in the regulation of body weight, they proposed that the brainstem
may be more important in the regulation of food intake than hypothalamus in the context of the brain-vagus nerve-gut axis .
Review Similar and distinct mechanisms in the protective processes of upper and lower GI tract by Gyires et al.  is an excellent overview
of the protective mechanisms of upper and lower gastrointestinal tract providing their own findings purposefully elaborated. This review
analyzed many factors involved in various forms and levels of protection of mucosal tissues, mucosal protection in the periphery (barriers and
mediators), intestinal defense mechanisms (mucosal barriers, bile acids), stimulation of gastrointestinal mucosal protection (pre-epithelial,
epithelial, sub-epithelial possibilities) and central nervous system involvement .
The authors, Kang E.A. and collaborators  in review BPC 157 as potential agent rescuing from cancer cachexia summarized signaling
pathways and promising drug candidates to treat cancer-associated cachexia and focused their review on the possible application of BPC 157
for cancer cachexia with the mode of action. They showed the significant relieving effects of BPC 157 on C-26 colon adenocarcinomainduced
muscle degeneration and inflammation. The presented review is very informative and may provide support for the potential use of
stable gastric pentadecapeptide BPC 157 as a cachexia-rescuing therapeutic agent .
The author, Gaetano Iaquinto  in his review, The several activities of 4-methypyrazole in animals and humans, reviews 4-
methypyrazole (4-MP), a pyrazole derivative in animal and humans. 4-MP is a potent competitive inhibitor of ADH activity with an affinity
about a 1000 times more than toxic alcohols. 4-MP was shown to reduce the formation of toxic metabolites in lethal methanol and ethylene
glycol poisoning in animal models and in methanol poisoning in humans, and in particular, 4-MP provides significant protection of the human
stomach against alcohol-induced acute mucosal injury .
Kodama et al.  in their review MALT lymphoma, stress ulcer and cholinergic nerves from the viewpoint of bilateral and unilateral
truncal vagotomy and substance P follow the evidence that the vagal nerves play an important role in gastric function providing rich innervation
to this area and that the vagal nerve activity was shown to be related to both gastric cancer development and progression, but its relation
to the mesenchymal tumors such as MALT lymphoma is not known. Thereby, the authors were focused on the effect of vagotomy on gastric
MALT lymphoma development by in the Helicobacter heilmannii-mouse infection model .
The review Role of formyl peptide receptors in gastrointestinal healing by Prevete and collaborators  assessed the role of a particular
class of PRRs, the Formyl Peptide Receptors (FRP), in gut mucosa homeostasis. They report studies that strongly suggest the possibility that FRP activation is crucial for the maintenance of gut homeostasis. Furthermore, they provide indications for the potential clinical relevance of
novel directions related to FPR modulation in various gastrointestinal disorders .
The authors, Seiwerth and collaborators , in review BPC 157 and standard angiogenic growth factors. Gastrointestinal tract healing,
lessons from tendon, ligament, muscle and bone healing focused on gastric pentadecapeptide BPC 157, a peptide always given alone vs. standard
peptidergic angiogenic growth factors such as EGF, FGF and VEGF, and numerous carriers. They also reviewed how the healing could
happen involving angiogenic growth factors in the gastrointestinal tract and in extra-gastrointestinal tissues, such tendon, ligament, muscle
and bone, providing a carrier, use (i.e., EGF, FGF and VEGF) or no use (BPC 157). The effects of EGF, FGF, VEGF, and BPC 157 were
compared in various injuries, such as gastrointestinal ulcer, tendon, ligament, muscle and bone healing. They found that BPC 157 was the
only factor being consistently effective in all of the models, given per-orally or locally, unlike FGF, EGF, and VEGF. The authors found that
on the healing mechanism of BPC 157 is related to its own angiogenic effect in the healing .
The authors, Sikiric and collaborators , in review Novel cytoprotective mediator, stable gastric pentadecapeptide BPC 157. Vascular
recruitment and gastrointestinal tract healing cover an intriguing story about the stable gastric pentadecapeptide BPC 157 and the whole
story about the concept of the cytoprotection and possibly new insights. The basic concept providing the stomach cytoprotection as the most
fundamental concept, stomach cell protection and endothelium protection was largely elaborated. Having managed these two points, stomach
cell protection and endothelium protection, either one or together, even much more than standard cytoprotective agents do, BPC 157 employed
large scale of its beneficial effects seen in various organs. This provides an additional realization of blood vessels controlling, described
as “vessel recruitment depending on injury”, “bypassing vessel occlusion” or “running toward the defect”, leading to reestablishing
blood flow. This was taken as a final implementation of the concept of cytoprotection. Obviously, the reestablished blood flow, and largely
reversed injurious course may practically implement the cytoprotection concept .
The authors K. Takeuchi and K. Amagase  in their review Roles of cyclooxygenase, prostaglandin E2 and EP receptors in mucosal
protection and ulcer healing in the gastrointestinal tract reviewed how the PGE2 prevents acid-reflux esophagitis and affords protection of
the stomach against NSAIDs through the activation of EP1 receptors. Although CRS-induced gastric lesions were aggravated in IP but not
EP1 KO mice, endogenous PGE2 may also be partly responsible for mucosal protection during CRS via the activation of EP4 receptors, in
addition to that afforded by PGI1
/IP receptors. Similar observations were done in the other parts of GI tract (duodenum, small intestine, stomach,
large bowel) .
Racz et al.  in their review Defense mechanisms against acid exposure by dental enamel formation, saliva and pancreatic juice production
review defense mechanisms of different tissues. The similarities of enamel, salivary glands and pancreas are well emphasized and
described. The authors highlight the importance of bicarbonate buffer system and highlight the possible failures as well. The intracellular
transport and secretion mechanism are also reviewed .
Yanaka in his review Contribution of NRF2 in gastrointestinal protection from oxidative injury  reviews the evidence that dietary
intake of sulforaphane, derived from broccoli sprouts, ameliorates H. pylori-induced gastritis, NSAIDs-induced small intestinal injury, and
functional constipation. The additional focus was on many other compounds, which enhance the nuclear factor erythroid 2-related factor 2-
mediated antioxidant system, and in particular on some reports, which have shown that excessive stimulation of nuclear factor erythroid 2-
related factor 2 enhances chemoresistance and facilitates the growth of cancer cells .
The review Lifestyle and peptic ulcer disease from Yegen  extends a general point such as the risk of developing peptic ulcer disease
shown to be associated with genetic inheritance, lifestyle and social status of the patients, to an extensive and very informative review providing
particular chapters (Stress, NSAIDs, Diet and body weight, Alcohol, Smoking, Physical activity, Sleep) with a list of the references that
seems to be quite extensive and well chosen .
We hope multidisciplinary topics discussed with the theme issue will promote further discussion among pharmaceutical industry and researchers.
As the guest editor, I would like to thank all the authors and co-authors for their excellent contributions. Also, I would sincerely
thank and acknowledge the diverse group of experts and colleagues who offered their substantial reviewing efforts and suggestions. Last but
not least, I would like to express my gratitude to the Bentham Science Publishers for the wonderful experience while working with the journal
on this thematic issue. It was a great pleasure working with the Director Kazim Baig and for the opportunity to publish in Current Pharmaceutical
Design. It was a wonderful experience working with Editorial Assistant Aamer M. Khan at the time of submission and processing of the
manuscripts. I would like to acknowledge the contributions of others who took care of editing and processing the manuscripts to obtain the
best final quality at the time of publication.
CNS Therapeutics: Drugs and Peripheral Influences
Unique Approaches to Drug Delivery
It has been absolute honor to serve as a guest editor for this special issue of Current Pharmaceutical Design. Inflammation is the common
pathological basis for age-related diseases such as cancer, neurodegenerative diseases, cardiovascular diseases, and diabetes. Life expectancy
is estimated to dramatically increase in the upcoming decades, and despite it should be a great accomplishment for our societies, the increase
of longevity is a significant challenge for the global economy because this increase leads to an enhance in the incidence of age-related diseases.
There is great interest by pharmaceutical/biotechnology industries to focus on drug development strategies for inflammatory-related
pathologies. Nowadays, anti-inflammatory therapeutics market is the major part of global pharmaceutical industries and is expected to grow.
The pharmaceutical industries are benefiting of academic inflammation research, and are adopting novel approaches in drug designing as key
strategies to gain additional market share. In fact, according with Allied Market Research report, the global anti-inflammatory market is expected
to garner $106.1 billion by 2020. However, still the challenge is to design new anti- inflammatory drug with lesser side effects.
This special issue will cover several inflammatory research areas. For example, a growing number of researchers have discovered various
signaling pathways that are associated with the initiation and progression of inflammation. An excellent manuscript by Yeung and Colleagues
 focus on classical inflammatory pathways: p38 MAPK, IL-6/JAK/STAT3 and PI3K; and a non-classical inflammatory pathway, the
Hippo. The molecular mechanisms, associated pathologies, selected drugs of these signaling pathways and limitations and potential risks of
anti-inflammatory drugs will be summarized. The central nervous system may be the target of several chronic inflammatory-related pathologies
where the inflammatory component acts either as a primary cause of the disease or as a secondary outcome of the tissue damage. An
outstanding manuscript by Degan and colleagues  summarize current data on Alzheimer’s disease, Parkinson’s disease, Huntington’s disease,
Amyotrophic Lateral Sclerosis, stroke and traumatic brain diseases and discuss the potential anti-inflammatory therapeutic approaches
acting at different levels and stages of the diseases.
Alcohol consumption causes comprehensive liver disorders, designated as Alcoholic Liver Disease (ALD). In an interesting manuscript
Lu and Cederbaum  summarize the consequences of liver damage, the relationship of CYP2E1/CYP2A5 and ALD development, the
mechanisms involved and recent advances, some unpublished data of cytochrome P450 enzymes dysregulation in inflammatory disease
states. Mucositis or inflammation of the mucosa that occurs throughout the alimentary tract from the mouth to anus, is a side effect associated
with the use of chemotherapy. Mahendran and colleagues  in an excellent reviews focus the pathobiology of chemotherapy-induced oral
and gastrointestinal mucositis and recent research examining the role of agents with anti-inflammatory activity in treatment and prevention of
the condition. The skin is the largest organ in the human body which function is to protect the body from external hazards. Skin inflammation
leads to skin aging that can eventually promote cellular damage and the development of cancer. An interesting manuscript by Kim and Lee
 summarize some proteins and signaling pathways involving in skin inflammation, which can be modulated by phytochemicals with the
purpose to attenuate skin inflammation.
Considerable progress has been made in the understanding of inflammatory mechanisms which may open new avenues for preparation of
novel anti-inflammatory drugs. Medicinal plants are promising sources for preparation of such novel drugs. Taking into consideration the
anti-inflammatory activities of a large group of medicinal plants, Kazemi and colleagues  remarkably describe recent advances in progresses
in understanding the molecular basis of inflammation, and presents the most important medicinal plants with anti-inflammatory activity.
Melatonin is an indolamine synthesized and secreted by the pineal gland and other extrapineal sources including immune system cells,
brain, skin and the gastrointestinal tract. Carrascal and colleagues  present very timely manuscript evaluating the use of melatonin in the
control of inflammation underlying the Alzheimer, Amiotrophic lateral, Multiple Sclerosis, Huntigton´s disease and ulcerative colitis. The
authors propose that these actions of melatonin are mediated through their receptors but also with their direct antioxidant action and melatonin's
ability to break the vicious cycle of ROS-inflammation.
The use of nanomedicine, nanoscale structures for drug delivery, exhibits a really high therapeutic potential in the field of neuroinflammation
therapy. In an excellent manuscript Cayero-Otero and colleagues  analyzes a wide variety of compounds as possible candidates to
cross the Blood-Brain Barrier (BBB) and reach the brain in sufficient concentration to be able to exert its effect. The authors also describe
PLGA nanoparticles as one of the most versatile drug delivery nanosystems, and other strategies, as direct intranasal administration (nose-tobrain),
novel viral vectors and novel implanted catheters. Computational biology approaches could be useful to design novel drugs for inflammation
treatment. Virtual screening involves applying computational methods to discover new ligands for biological structures from the
formation of large libraries composed of a large number of compounds. In an interesting manuscript Scotti and colleagues  illustrate different
studies employing a variety of virtual screening approaches to find molecules that have actions on important, diverse targets implicated in
Drug Delivery Systems and Drug Targeting
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Antibodies and Immunotherapeutics
In this special issue of Current Pharmaceutical Design, entitled: “Antimicrobial peptides as mediators of innate immunity”, the major
features of Antimicrobial Peptides (AMPs) are outlined. In particular, their classification, cellular sources, and biological properties in health
and disease are described. Finally, clinical applications of AMPs, as novel therapeutics in the course of infections caused by antibioticresistant
bacteria, fungi, protozoa and viruses as well as in cancer, are discussed.
Magrone et al.  at first review the phylogenic sources of AMPs as well as their anti-inflammatory and immunomodulating activities.
Moreover, lantibiotics, as new potential anti-infective drugs, are described. Authors also point out the ability of dietary bioactive principles
and food supplements to induce AMP production.
Pizzo et al.  place emphasis on the exploitation of structure, function and mechanisms of action exerted by AMPs in drug targeting. In
this review, cryptic AMPs are introduced as proteins hidden in their primary structure and, then, released by the host and/or bacterium proteases.
Their discovery has enlarged the spectrum of known AMPs, also allowing investigation of new functions and applications.
Drago-Serrano et al.  describe the role of Lactoferrin (LF) and lactoferricins (Lfcins) in the control of pathogens also in virtue of their
immune regulatory properties. LF and Lfcins are molecules of pharmacological interest and native LF and its N-terminus peptides seem to
have potential applications as adjunctive anti-infectious agents. Finally, these compounds have the property to retard tumor growth and attenuate
Chieosilapatham et al.  review the role played by human cathelicidin LL-37 in the modulation of innate immune response. Particularly,
LL-37 exerts pro- and anti-inflammatory activities, also inducing maturation, proliferation and regulation of apoptosis. Finally, according to
its anatomical distribution, LL-37 seems to play different roles in the regulation of innate immunity.
Kiatsurayanon et al.  illustrate the role of human beta-defensins (hBDs) in the maintenance of skin barriers. They exert a broad spectrum
of microbicidal activities also displaying several immunoregulatory activities in the course of skin infections and inflammation. A better
knowledge of hBD physiology may contribute to develop new therapeutic remedies in the course of skin barrier impairment, such as atopic
dermatitis and psoriasis.
Skovbakke et al.  outline the property of Formyl Peptide Receptors (FPRs) in mediating the immunomodulatory activities of AMPs
and peptidomimetics. In this framework, for their function neutrophils express FPRs which behave as targets of AMPs. On these bases, peptidomimetics
represent new molecules able to modulate neutrophil activities.
Adolph et al.  describe the function of intestinal Paneth cells as producers of AMPs finalized to the homeostatic control of microbiota.
Emphasis is placed on the alteration of Paneth cell function in inflammatory disease and, especially, in the course of ulcerative colitis and
Khurshid et al.  point out the unique structure of human defensins based on amino acid sequences bearing disulphide bridges which
allow their synthesis or natural production with the help of bacteria. In particular, in this review, the role exerted by oral defensins in health
and disease is stressed out.
Rivas-Santiago and Torres-Juarez  highlight the ability of AMPs to kill mycobacteria both in vitro and in vivo. Then, AMPs can be
used as an adjunctive therapy in the course of human tuberculosis. However, to avoid collateral effects depending on the multiple activities
exerted by AMPs, Authors suggest that certain features, such as comorbidity, family history and risk factors in patients with tuberculosis
should be taken into consideration prior to AMP therapy start.
Magrone et al.  emphasize the concept that AMPs in comparison to antibiotics possess a larger spectrum of antimicrobial activities
without inducing bacterial resistance. Therefore, their use in different clinical settings, even including septic shock is discussed. Finally, a
series of novel compounds derived from AMPs for their potential capacity to reinforce the immune response are illustrated.
Approximately 15 million babies are born preterm each year and one million die of complications of prematurity. As of the close of 2016,
the latest year for which data are available, the preterm birth rate rose for the second year in a row in the United States, and now stands at
9.8%. This setback in the US is likely tied to major lifestyle and environmental factors that have negatively impacted other health outcomes
Recent data indicate that increased obesity and oxidative stress lead to dysregulation of the immune response, which, in turn, leads to
disease. Inflammation, resulting from immune dysregulation, has been linked to cardiovascular, neurodegenerative and oncologic disorders.
Inflammation, in the absence or presence of microorganisms, is also the single most common driving force behind spontaneous preterm birth.
In this second volume of our “hot topics” issue focused on emerging pharmacotherapy for preterm birth (PTB), we move into the realm of
investigative approaches at the cutting edge of the field that target immune dysregulation. Recognizing that toll-like receptor 4 (TLR4) lies at
the crossroads of both infectious and sterile inflammatory pathways, Sarah Robertson et al. review the evidence supporting the targeting of
toll-like receptor 4 (TLR4) to prevent preterm labour . The authors review the role of TLR4 in both normal parturition and preterm birth as
well as how this receptor interacts with both pathogen-derived and endogenous ligands. Finally, the authors summarize recent exciting data
supporting the use of specific TLR4 antagonists to prevent PTB, including (+)-naloxone.
In a comprehensive review on the topic, Carlos Salomon et al. propose that preterm birth may be triggered by extracellular membrane
vesicles involved in the regulation of signaling cascades during pregnancy and parturition, known as exosomes . These highly stable
nanovesicles, serving as transporters of mRNA, miRNA, DNA, lipid, cell-surface receptor and protein mediators, communicate between the
maternal and fetal compartments in pregnancy. The authors present the provocative proposal that exosomes carry the signals for the initiation
Kiersten Giusto and Charles Ashby point to the role of the sphingosine kinase/endothelin-1 pathway as a novel putative target of prevent
PTB . The data summarized in their review provide solid evidence for the dual role of this pathway in PTB, which mediates both a proinflammatory
response as well as uterine contraction. The fact that this pathway is regulated by positive feedback underlines its explosive
role in inflammation-driven PTB.
Samir Gorasiya et al. describe an exciting new class of cytokine suppressive anti-inflammatory drugs, based on the accidental discovery
that N,N-dimethylacetamide, a common pharmaceutical excipient, rescues timed pregnant mice from lipopolysaccharide induced preterm
birth . These molecules represent a novel group of nuclear factor kappa B (NF-κB) inhibitors. As NF-κB is implicated in so many disorders,
these new drugs may have broad clinical impact.
Finally, Nicole Olgun of the Centers for Disease Control and Prevention reviews the special considerations related to viral infection in
pregnancy and Ebola virus in particular . Dr. Olgun reminds us of the devastating toll viral infections exert on neonatal health. Her review
emphasizes the value of preparedness as unexpected epidemics emerge.
The development of pharmacotherapy to prevent preterm birth presents a special challenge because of the vulnerability of the developing
fetus. Even agents proven to be safe in other clinical settings that show potential tocolytic activity can not simply be repurposed for the prevention
of preterm labor without being carefully vetted for teratogenic effects. The successful approach to this far-reaching clinical problem
will come from collaborative efforts among investigators with different perspectives and expertise. This issue, the second of a two volume
series on this topic, brings together insightful reviews written by experts from around the globe.
Infections caused by microorganisms are one of the most common issues and a serious threat to patients in the clinic. These microbial
infections often result in disease progression and surgical failure. To address this problem, many efforts have been made to exploit various
biomaterials and medical devices with antibacterial properties.
Currently, various materials, namely antibiotics, inorganic nanomaterials, polymers, and Antimicrobial Peptides (AMPs), have been
widely investigated and used as antimicrobial agents. The morphologies, molecular structures, or release behaviors of these materials may
significantly affect their functionality. Meanwhile, the antibacterial mechanisms of these materials have also gained much attention and may
direct the design of advanced antibacterial materials or medical devices. In this theme issue, ten reviews from researchers in differing fields
were collected together with a primary focus on the design of antibacterial materials and their applications.
Hydrogels, an important biomaterial, have been widely used in biomedical fields. Weiguo Xu et al. gave a review on the recent development
of antimicrobial hydrogels and discussed their potential prospects . Polymers with antibacterial functions have also been investigated.
Cansu Ergene and Edmund F. Palermo introduced a wide range of antimicrobial polymers and gave a review on state-of-the-art methods employed
to optimize macromolecular structures for high antibacterial activity . Diego and his colleagues gave a comprehensive introduction
on antibacterial coatings with different molecules, and the striking developments of chitosan-based functional coatings for pharmaceutical and
biomedical applications were well reviewed .
Besides polymers, inorganic materials also made a significant impact in antibacterial fields. Zhou Chen et al. evaluated recent developments
regarding bioactive glass, graphene-based antibacterial materials, as well as metal ion coatings . The antibacterial mechanisms of
nanoparticles have been well investigated by Scott and his colleagues as they summarized the challenges metal oxide antibacterial materials
face and presented novel methods to evaluate the antibacterial potency and efficiency of these nanoparticles .
AMPs are another promising therapeutic agents to combat infectious diseases. However, the applications of AMP are limited due to insufficient
sources, instability, toxicity, and bioavailability. In this theme issue, Huping Jiao’s group provided a review on the design and modification
of AMPs, and summarized both chemical and biological methods to adjust the properties of AMPs .
The controlled release of antibiotics is an efficient method to prevent or treat implant-associated infections. Liqun Xu et al. provided a
summary on the carrier platforms used for loading antibiotics and their drug release behaviors were also highlighted . Layer-by-layer
(LBL) is also a versatile method to construct functional surfaces and films. Lan Liao and coauthors gave a brief introduction and summarized
the applications of LBL to construct antibacterial surfaces or films .
Antibacterial agents play an important role in the wound healing process. Zhengwen Li and Menno Knetsch gave a review on current
antibacterial strategies of wound dressings, the wound infection process, antibacterial agents, and a controlled drug delivery system .
The real-time monitoring of bacterial infections and drug evaluation are also important topics. Xiwen Wang and his colleagues provide a
review about bacterial luciferase gene cassette as a real-time bioreporter for infection model and drug evaluation .
This special issue covers various fields of antibacterial materials. The guest editors and all the authors hope this theme issue may help
readers discover advanced ideas and guidance, while simultaneously motivating readers to contribute to researches on antibacterial materials.
Abstract: In the field of inflammation/infection imaging, nuclear medicine techniques offer non-invasive tools to detect early pathophysiological
changes before the development of anatomical changes detected by radiological procedures and, often, before clinical onset
of symptoms. This field has been recently developed with several new radiopharmaceuticals for SPECT and PET used to define new
strategies for imaging immune cells as well as pathogens.
In particular, we count now several dozens of new radiopharmaceuticals designed for bacterial imaging and new peptides and antibodies
for imaging neutrophils, T-cells, B-cells and macrophages.
These may have important applications not only for diagnostic purposes but also for prognostic purposes, therapy decision making and
for early follow-up of therapy efficacy, thus allowing us to define specific therapies for each individual patient.
Inflammatory disorders, infections and cancer, have a tangible impact for health and social costs. For this reason, it is advisable to establish,
in each hospital, a multi-disciplinary team of experts for the management of patients with chronic inflammatory/infectious diseases, as
well as for cancer patients, to optimize diagnostic protocols, therapy decision and follow-up. Nowadays, among the several imaging modalities
available, nuclear medicine techniques play a secondary role after radiation-free methods such as ultrasound (US) and Magnetic Resonance
Imaging (MRI). Nevertheless, a multidisciplinary approach combining radiology and nuclear medicine often represents a suitable diagnostic,
prognostic, and monitoring tool in patient management. Nuclear medicine techniques, in particular, offer non-invasive tools to detect
early pathophysiological changes before the development of anatomical changes detected by radiological procedures and often before clinical
onset of symptoms.
Hence, this monographic issue is well-timed for providing clinicians current knowledge on molecular imaging in inflammatory disorders
and infections, since an early and accurate diagnosis represents an important step to prevent serious or long-lasting complications as well as to
monitor therapeutic responses.
Functional imaging with radiopharmaceuticals has been shown to detect inflammatory processes with high sensitivity and specificity and
constitute the basis of molecular imaging with Positron Emission Tomography (PET) or Single-Photon Emission Computed Tomography
These techniques are also of great importance for therapy decision making and in monitoring response to therapy. Thanks to the possibility
of deeply understanding the nature of an inflammatory process and what cells or cytokines are present in the inflamed site we are now able
to decide the most appropriate therapy and to verify its efficacy.
As an example, I could mention the role of 99mTc-anti-TNFα antibodies [1-5] or 99mTc-anti-CD20 antibodies [6, 7] or 99mTc-octreotide [8,
9] in patients with rheumatic diseases, or the role of 99mTc-Interleukin-2 in patients with Type 1 diabetes [10, 11], or the role of 99mTc-labelled
antibiotics in defining the nature of pathogen causative of an infection , or other radiopharmaceuticals in neuro-inflammation  and
heart inflammation .
Along this line, many other radiopharmaceuticals have been developed and studied including those for targeting chemotaxis, cell recruitment,
matrix metalloproteinase production, macrophage metabolism, angiogenesis, and several other specific against cells and soluble antigens
involved in inflammatory and infective diseases as reviewed in this issue by Signore et al.  and Sollini et al. . The approach of
specific imaging of bacteria has been reviewed by Ebenhan et al.  whereas the new radiopharmaceuticals labelled with 68Ga for PET imaging
have been reviewed by Vorster et al. .
It must be clarified, however, that in some pathological condition it is not so relevant to use a highly specific radiopharmaceutical, being
more relevant its high sensitivity or even the strategy used for image acquisition that could improve the disease specificity of a non-highly
specific radiopharmaceutical as clearly explained by S. Skehan and M. Peters in early 2000 [19, 20] and others .
The understanding of the properties of radiopharmaceuticals and of the most appropriate image acquisition modality, relies on the success
of the use of radiolabelled neutrophils [22-24] and on the use of 18F-FDG is certain specific pathological conditions [25-27] as also reviewed
by Ankrah et al. in case of fungal infections in children  or as described by Keidar in case of diabetic infections  or by Palestro et al.
in case of fever of unknown origin .
Colchicine has been used for over two thousand years. Recently research studies have shed light on potential new indications. While colchicine
is in fact an ancient drug, there is a lack of “big” data on its utilization in modern medicine.
Tsoucalas et al.  searches back in ancient Greek and Byzantine sources for documentation of colchicine utilization. While initially
considered as an effective poison to “kill a rebellious slave, or a rival nobleman”, later on Late Greek antiquity its potential therapeutic aspects
were recognised . Karamanou M et al.  unveils the modern historical course of colchicine from distribution through empiric physicians
(charlatans) in the 15th century to the contemporary pharmacopeia of the 19th century.
Colchicine exploits a plethora of pathophysophysiological pathways and is in general characterized by a relatively safe profile. Side effects
are mainly of gastrointestinal origin, while toxicity is associated to doses multiple of the common therapeutic regimens. Angelidis C.
et al. , review pharmacokinetics, mechanisms of action and side effects of colchicine.
Drosos E. et al.  reviews potential indications of colchicine in the fields of low-back pain, gliomas and stroke from the viewpoint of
neurosurgery. Tsivgoulis G. et al.  review available data and ongoing studies in utilization of colchicine’s anti-inflammatory properties for
prevention cerebral atherosclerotic events.
Marinaki S et al.  provide an overview of colchicine employment in a series of entities affecting the kidneys (fibrotic disorders, diabetic
neuropathy, familial Mediterranean fever and amyloidosis, renal transplantation, hypertensive kidney disease, autosomal dominant
polycystic kidney disease, focal segmental glomerulosclerosis).
Colchicine as a treatment for gout, a classic indication, is comprehensively reviewed by Parcart T and Richette P . Further, Lantinioti
G. et al.  present current perspectives on indications of colchicine in autoinflammatory disorders (Familial Mediterranean Fever, Periodic
fever with aphthous stomatitis, pharyngitis and adenitis, Behcet’s disease, Idiopathic recurrent acute pericarditis).
Finally, colchicine has been suggested as a means of primary prevention for post-operative atrial fibrillation. A series of randomized studies
and meta-analyses have lately been available and are presented in detail by Vrachatis D. et al. . Last, but not least, a “traditional” indication
of colchicine, pericardial syndromes, is thoroughly reviewed by Lazaros G. et al. .
Heart diseases are the world’s leading cause of morbidity and mortality. For a broad spectrum of heart diseases, though each has its own unique features in pathogenesis and disease evolution, the inflammatory processes are commonly shared among them. The initial inflammatory reaction is a cardioprotective response to triggers such as ischemia, tissue injury and infection. However, prolonged inflammation, can damage normal tissue, cause cardiac dysfunction, result in adverse cardiac remodeling including myocyte hypertrophy and necrosis, fibrosis, and at last contribute to a poor prognosis. Recent findings suggest that regulation of inflammation is a potential target for development of therapies for heart diseases. In the purpose of facilitating further management of heart diseases, this issue will systemically review recent studies focusing inflammation in heart diseases. The issue contains 12 papers that summarize inflammatory pathways and potential therapeutic targets for heart diseases.
Lifestyle modifications and diet therapy are two of the most important tools in prevention and treatment of cardiovascular risk factors, cancer and other chronic diseases. In keeping to this, increasing epidemiological data support the concept that diet rich in fruit and vegetables promotes health and attenuate, or delay, the onset of various diseases, including heart disease, hypertension, cancer and certain age-related degenerative disorders. Over the past decades increasing research interest has been addressed to the potential health benefits of polyphenols. According to this, it has been suggested that the health benefits from fruit and vegetables can be partially linked to their content of a certain group of polyphenols, the flavonoids. A large body of evidence supports that dietary intake of polyphenols (particularly flavonoids and the specific class of flavonoids named flavanols largely contained in red wine, cocoa, tea, fruits and vegetables) might exert some beneficial vascular effects, reduce the risk of cardiovascular morbidity and mortality and contribute to the prevention of other chronic diseases. Among phytochemicals, polyphenols constitute one of the most numerous and widely distributed groups of substances in the plant kingdom, with more than 8000 phenolic structures. They occurred in a variety of fruits, vegetables, seeds, flowers, beverages and even some manufactured food as a component of the natural ingredients used.
These bioactive compounds typically occur in small quantities in foods. They are being intensively studied to evaluate their effects on health. The impetus sparking this scientific inquiry was the result of many epidemiologic studies that have shown protective effects of plant-based diets on cardiovascular disease and cancer. According to this, growing interest has been addresed to many bioactive compounds. These compounds vary widely in chemical structure and function and are grouped accordingly.
Plant polyphenols have drawn increasing attention due to their potent antioxidant properties and their marked effects in the prevention of various oxidative stress associated diseases. In the last few years, the identification and development of phenolic compounds or extracts from different plants has become a major area of health- and medical-related research.
Adequate nutrition is one of the pillars of public health. Before developing and implementing effective intervention programmes to improve nutrition at the population level, it is important to know the nutritional situation of the target group.
Therefore, the time lapse for hidden progression of pathological process may take years and even decades. During this time, both the person at risk and physician remain unaware of the existing premorbid pathological condition. As a result, no preventive measures are undertaken to reduce the individual risk of the development of the overt disease.
Polyphenols are abundant nutraceutical micronutrients in our diet, and evidence for their role in the prevention of degenerative diseases is emerging.
The WHO estimated that the costs of not engaging in prevention and therapy will be fastly growing in the next years, with a more severe impact in developing countries. Several natural nutraceutical from our diet and ingredients marketed for use in dietary supplements address such risk factors. The ability of nutraceuticals to favorably influence cardiovascular risk factors and atherosclerotic vascular disease as well as a number of different chronic disease should be recognized as an enormous opportunity for the prevention or treatment of this common condition.