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Vitamin A, gender and ethanol interactions.

F S Messiha

    Neurobehavioral Toxicology and Teratology
    |March 1, 1983
    PubMed
    Summary

    Vitamin A reduced ethanol intake in female rats, but not males. Testosterone partially blocked this effect in females, suggesting Vitamin A

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    Area of Science:

    • Endocrinology
    • Nutritional Science
    • Neuroscience

    Background:

    • Ethanol (ET) consumption is influenced by hormonal factors.
    • Vitamin A's role in modulating substance intake is not fully understood.
    • Sex differences in ET preference and response to interventions are notable.

    Purpose of the Study:

    • To investigate the impact of Vitamin A on voluntary ethanol intake in rats.
    • To examine the influence of sex and androgen intervention on this effect.
    • To explore potential mechanisms underlying Vitamin A's action on ET consumption.

    Main Methods:

    • Short-term oral administration of Vitamin A (500 mg/kg/day for 5 days) to rats.
    • Inclusion of testosterone (0.1 mg/kg/day for 5 days) in some treatment groups.
    • Assessment of voluntary ethanol intake and hepatic enzyme activity (alcohol and aldehyde dehydrogenase).

    Main Results:

    • Vitamin A significantly reduced ethanol intake in female rats, but not in male rats.
    • Testosterone alone had no effect on ethanol intake in females.
    • Coadministration of testosterone and Vitamin A lessened the aversion to ethanol in females compared to Vitamin A alone.
    • Hepatic enzymes were not altered by Vitamin A in females, unlike in males.

    Conclusions:

    • Vitamin A's aversion to ethanol drinking is likely due to its antiestrogenic properties, not metabolic changes.
    • Testosterone's androgenic property partially counteracts Vitamin A's effect in female rats.
    • This suggests a hormonal basis for Vitamin A's influence on ethanol preference.

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