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Decrease in lipogenesis and glucose oxidation of rat adipose tissue after chronic ethanol feeding.

J S Wilson, M A Korsten, P W Colley

    Biochemical Pharmacology
    |June 15, 1986
    PubMed
    Summary
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    Chronic ethanol consumption impairs adipose tissue lipogenesis and glucose oxidation in rats. These metabolic changes may explain the high triglyceride levels seen in alcoholics after meals.

    Area of Science:

    • Biochemistry
    • Metabolic Science
    • Nutritional Science

    Background:

    • Alcohol consumption is prevalent and linked to metabolic disorders.
    • Ethanol's impact on adipose tissue and glucose metabolism requires further elucidation.
    • Understanding these effects is crucial for addressing alcohol-related health issues.

    Purpose of the Study:

    • To investigate the effects of chronic ethanol feeding on adipose tissue lipogenesis.
    • To determine how chronic ethanol intake influences glucose metabolism in adipose tissue.
    • To explore the potential link between ethanol-induced metabolic changes and hypertriacylglyceridemia.

    Main Methods:

    • Female Wistar rats were used in a controlled feeding study.
    • Rats received liquid diets with ethanol (36% of energy) or isocaloric carbohydrate for 3 weeks.

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  • Lipogenesis was assessed by measuring labeled glucose incorporation into lipids.
  • Glucose oxidation rates were also measured.

    • Main Results:

    • Chronic ethanol feeding significantly depressed adipose tissue lipogenesis.
    • Incorporation of labeled glucose into glyceride glycerol and fatty acids was reduced.
    • Glucose oxidation in adipose tissue was impaired by chronic ethanol consumption.
    • Ethanol intake led to decreased lipid synthesis and glucose utilization.

    Conclusions:

    • Chronic ethanol consumption negatively impacts adipose tissue lipogenesis.
    • Impaired glucose metabolism in adipose tissue is a consequence of sustained ethanol intake.
    • These metabolic disturbances may contribute to the hypertriglyceridemia observed in alcoholics.
    • Ethanol-induced alterations in fat and glucose metabolism are significant.