Chelation in metal intoxication
Swaran J S Flora1, Vidhu Pachauri
1Division of Pharmacology and Toxicology, Defence Research and Development Establishment, Gwalior, India. sjsflora@drde.drdo.in
Summary
Chelation therapy uses agents to bind toxic metals for excretion. Newer strategies like combination therapy and antioxidants improve treatment for heavy metal poisoning.
Area of Science:
- Toxicology
- Pharmacology
- Environmental Health
Background:
- Chelation therapy is a primary medical treatment for toxic metal exposure.
- Chelating agents bind metal ions, facilitating their excretion from the body.
- Traditional agents like 2,3-Dimercaprol have limitations due to side effects and efficacy.
Purpose of the Study:
- To review current chelating agents for heavy metal and metalloid intoxication.
- To update on novel strategies for enhancing chelation therapy effectiveness.
- To discuss challenges and advancements in treating metal toxicity.
Main Methods:
- Literature review of existing and emerging chelating agents.
- Analysis of therapeutic strategies including combination therapy and antioxidant co-administration.
- Evaluation of chelator properties such as hydrophilicity and intracellular access.
Main Results:
- Development of less toxic chelating agent analogues is ongoing.
- Hydrophilic chelators enhance renal excretion but have limited intracellular access.
- Combination therapy and antioxidant co-administration show promise in overcoming limitations.
Conclusions:
- Advancements in chelating agents and strategies are crucial for effective heavy metal detoxification.
- Addressing limitations of current therapies requires innovative approaches.
- Further research is needed to optimize treatment protocols for metal intoxications.
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