Heavy metal ion chelation (null)

Heavy metal ion chelation is a chemical process whereby a chelating agent binds to heavy metal ions via multiple coordination bonds, forming stable, often ring-shaped complexes[5][1][2]. This process underlies chelation therapy, a medical intervention to treat acute or chronic heavy metal poisoning by enhancing excretion of toxic metals such as lead, mercury, cadmium, or arsenic[1][2]. Chelating agents may have additional biological effects, including reducing oxidative stress and inflammation stemming from redox-active metals in tissues[1]. The action of chelators depends on their molecular structure, selectivity for metal ions, solubility, and pharmacokinetic properties[2]. Clinical chelation strategies must balance efficacy in metal removal with risks related to redistribution, essential element depletion, and direct toxicity from the chelators themselves[1][2][5][4].

Other names

Chelationmetal ion chelationchelation therapyheavy metal sequestration

Formation of stable metal-chelator complexes, reducing free ion toxicity and enabling renal/biliary excretion. Redistribution of metal ions across compartments (e.g., removing ions from protein aggregates). Inhibition/passivation of metalloenzymes via chelating inhibitor fragments.