Interactions of ferrous ions with peroxidized lecithin-liposomes.
Oxidation of Fe2+ in the presence of peroxidized lecithin-liposomes small unilamellar vesicles suspended in various media (pH = 5.5) is described. Peroxidation of lecithin was induced by UV light and assayed by three methods: estimation of conjugated dienes, accumulation of hydroperoxides and by the thiobarbituric acid test. The oxidation of Fe2+ was accelerated by phosphate and citrate buffers, but in acetate buffer it was dependent on lipid peroxidases concentration and exhibited saturation kinetics.
Kowalska
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Department of Biochemistry and Biophysics, Silesian Medical Academy, Sosnowiec, Poland.
Naglik
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D005296:Ferrous Compounds; D007700:Kinetics; D015227:Lipid Peroxidation; D008081:Liposomes; D010084:Oxidation-Reduction; D010713:Phosphatidylcholines / Q000737:chemistry* / Q000528:radiation effects; D000644:Quaternary Ammonium Compounds; D014466:Ultraviolet Rays
D005296:Ferrous Compounds; D008081:Liposomes; D010713:Phosphatidylcholines; D000644:Quaternary Ammonium Compounds; C038178:ammonium ferrous sulfate