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Abstract
To study the effects of ethanol on liver chronically injured by CCl4, activities of hepatic enzymes related to ethanol oxidation, influences of ethanol on hepatic metabolites, and blood ethanol disappearance were observed. (1) Activities of alcohol dehydrogenase, low- and high-Km aldehyde dehydrogenase, microsomal ethanol-oxidizing system and drug-metabolizing enzyme were remarkably decreased in the injured liver. (2) Increases in lactate/pyruvate and beta-hydroxybutyrate/acetacetate ratios were shown in control liver 2 h after ethanol ingestion. Similar but less pronounced effects of ethanol on the 'redox state' were also seen in rats with chronic liver injury. (3) Delay in ethanol disappearance was not observed until 12 h after ethanol ingestion. The ethanol-induced changes in the redox state in the injured liver were similar to those in controls. Higher ethanol concentrations in blood from rats with chronic liver injury could be related to potentiate the injured liver.
Published Version
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