Abstract
Abstract: Thiobarbituric acid reactive substances (TBARS) were produced in rat liver microsomal suspension incubated with ethacrynic acid (loop diuretic drug) and NADPH. Two oxidative metabolites of ethacrynic acid with dicarboxylic acid and hydroxylated ethyl group, respectively, were formed in the reaction mixture. The oxidative metabolism of ethacrynic acid was inhibited by cytochrome P450 inhibitors. The formation of TBARS was remarkably depressed by inhibitors like diethyldithiocarbamate and disulfiram. These results indicate that lipid peroxidation occurred in rat liver microsomes through the oxidative metabolism of ethacrynic acid.
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