Abstract
Background: Iron is an essential micronutrient for bacteria, fungi, and humans; as such, each has evolved specialized iron uptake systems to acquire iron from the extracellular environment.
Objective: To describe complex ‘tug of war’ for iron that has evolved between human hosts and pathogenic microorganisms in the battle for this vital nutrient.
Methods: A review of current literature was performed, to assess current approaches and controversies in iron therapy and chelation in humans.
Results: In humans, sequestration (hiding) of iron from invading pathogens is often successful; however, many pathogens have evolved mechanisms to circumvent this approach.
Conclusion: Clinically, controversy continues whether iron overload or administration of iron results in an increased risk of infection. The administration of iron chelating agents and siderophore- conjugate drugs to infected hosts seems a biologically plausible approach as adjunctive therapy in the treatment of infections caused by pathogens dependent on host iron supply (e.g. tuberculosis, malaria, and many bacterial and fungal pathogens); however, thus far, studies in humans have proved unsuccessful.
Keywords: Infection, iron, nutritional immunity, siderophore, iron overload, iron chelation.
Current Medicinal Chemistry
Title:The Battle for Iron between Humans and Microbes
Volume: 25 Issue: 1
Author(s): Peggy L. Carver*
Affiliation:
- Department of Clinical Pharmacy, University of Michigan, College of Pharmacy, Ann Arbor, MI 48109- 1065,United States
Keywords: Infection, iron, nutritional immunity, siderophore, iron overload, iron chelation.
Abstract: Background: Iron is an essential micronutrient for bacteria, fungi, and humans; as such, each has evolved specialized iron uptake systems to acquire iron from the extracellular environment.
Objective: To describe complex ‘tug of war’ for iron that has evolved between human hosts and pathogenic microorganisms in the battle for this vital nutrient.
Methods: A review of current literature was performed, to assess current approaches and controversies in iron therapy and chelation in humans.
Results: In humans, sequestration (hiding) of iron from invading pathogens is often successful; however, many pathogens have evolved mechanisms to circumvent this approach.
Conclusion: Clinically, controversy continues whether iron overload or administration of iron results in an increased risk of infection. The administration of iron chelating agents and siderophore- conjugate drugs to infected hosts seems a biologically plausible approach as adjunctive therapy in the treatment of infections caused by pathogens dependent on host iron supply (e.g. tuberculosis, malaria, and many bacterial and fungal pathogens); however, thus far, studies in humans have proved unsuccessful.
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Cite this article as:
Carver L. Peggy *, The Battle for Iron between Humans and Microbes, Current Medicinal Chemistry 2018; 25 (1) . https://dx.doi.org/10.2174/0929867324666170720110049
DOI https://dx.doi.org/10.2174/0929867324666170720110049 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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