title: Free-radical production and oxidative reactions of hemoglobin.
abstract: Mechanisms of autoxidation of hemoglobin, and its reactions with H2O2, O2-, and oxidizing or reducing xenobiotics are discussed. Reactive intermediates of such reactions can include drug free radicals, H2O2, and O2-, as well as peroxidatively active ferrylhemoglobin and methemoglobin-H2O2. The contributions of these species to hemoglobin denaturation and drug-induced hemolysis, and the actions of various protective agents, are considered.
mesh_terms: D000818:Animals; D005609:Free Radicals; D006454:Hemoglobins / Q000378:metabolism*; D006801:Humans; D006861:Hydrogen Peroxide / Q000378:metabolism; D009573:Nitrites / Q000378:metabolism; D010084:Oxidation-Reduction; D010108:Oxyhemoglobins / Q000378:metabolism; D013482:Superoxide Dismutase / Q000378:metabolism; D013481:Superoxides / Q000378:metabolism
chemical_list: D005609:Free Radicals; D006454:Hemoglobins; D009573:Nitrites; D010108:Oxyhemoglobins; D013481:Superoxides; D006861:Hydrogen Peroxide; D013482:Superoxide Dismutase