Increasing incidence of demented patients around the globe with limited FDA approved conventional
therapies requires pronounced research attention for the management of the demented conditions in the growing
elderly population in the developing world. Dementia of Alzheimer’s type is a neurodegenerative disorder, where
conventional therapies are available for symptomatic treatment of the disease but possess several peripheral toxicities
due to lack of brain targeting. Nanotechnology based formulations via intranasal (IN) routes of administration
have shown to improve therapeutic efficacy of several therapeutics via circumventing blood-brain barrier and
limited peripheral exposure. Instead of numerous research on polymeric and lipid-based nanocarriers in the improvement
of therapeutic chemicals and peptides in preclinical research, a step towards clinical studies still requires
wide-ranging data on safety and efficacy. This review has focused on current approaches of nanocarrierbased
therapies on Alzheimer’s disease (AD) via the IN route for polymeric and lipid-based nanocarriers for the
improvement of therapeutic efficacy and safety. Moreover, the clinical application of IN nanocarrier-based delivery
of therapeutics to the brain needs a long run; however, proper attention towards AD therapy via this platform
could bring a new era for the AD patients.
Keywords: Alzheimer's disease, intranasal, olfactory, polymeric nanoparticles, lipid-based nanocarriers, clinical perspective.
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