描述
The hypochlorite ion is ClO-. A hypochlorite compound is a chemical compound containing this group. Hypochlorite is a strong oxidant. About 28% of oxygen consumed by phagocytes upon activation participates in its generation. Hypochlorite reacts with H2O2 producing singlet oxygen (1O2) - a strong initiator of Lipid peroxidation. O-sub 2, along with H2O2 can serve as the substrate for myeloperoxidase. When this takes place, Hypochlorite is formed. Hypochlorite is able to modify antioxidants incorporated into lipoproteins such as Alpha-tocopherol, Beta-carotene, lycopene, and ubiquinol-10. It is also able to modify a number of proteins which possess antioxidant functions such as ceruloplasmin, transferrin, superoxide dismutase, and catalase. Active myeloperoxidase is found at sites of atherosclerotic damage to the arterial vessel wall in humans. Lipid peroxidation is known to contribute to the development of pathological processes, among them atherosclerosis. The present hypothesis is that blood lipoproteins modified by Lipid peroxidation play a key role in the pathogenesis of this disease. One of the possible reasons for the appearance of oxidized blood lipoproteins in blood is the interaction of native blood lipoproteins with the reactive oxygen species generated by stimulated neutrophils, monocytes and other cells. The main reaction of Hypochlorite with unsaturated lipid is probably the generation of chlorohydrins. However, this reaction is not accompanied by generation of free radicals and Lipid peroxidation. This reaction is accompanied by the production of free radicals (but not singlet oxygen), probably alkoxyl radicals, which may play a role in the initiation of Hypochlorite-induced Lipid peroxidation. (PMID: 9260000, Biofactors. 1997;6(2):181-90.) [HMDB]