Abstract
Lead-containing compounds usually inhibit enzymic and metabolic processes. This inhibition is presumed to be the mechanism of intoxication by these compounds. Inhibition of detoxication activities of liver microsomal enzymes could be particularly detrimental because the toxicity of many different substances would be increased. Exposure of experimental animals to lead compounds in several studies has been associated with depressed activity of hepatic microsomal enzymes, reduced levels of hepatic cytochrome P-450, reduced levels of hepatic microsomal protein, and prolonged hexobarbital sleep times. The present report contains observations that under certain experimental conditions there is stimulated hepatic meicrosomal enzyme activity in rats fed lead acetate.
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