Ethanol induced microcephaly in the neonatal rat: Occurrence without withdrawal

H. H. Samson, K. A. Grant, S. Coggan, V. M. Sachs

    Research output: Contribution to journalArticle

    12 Scopus citations

    Abstract

    Neonatal rats exposed to ethanol with an artificial rearing technique on postnatal days 4-8 have been found to have up to 20% decrease in brain weight when examined on postnatal day 18. Following the four day ethanol exposure these animals went through a moderate to severe abstinence syndrome. Since the appearance of any detectable brain growth differences were not found until after this withdrawal period, it was possible that the microcephaly was a result of withdrawal and not ethanol exposure. To test this hypothesis, neonatal rats were exposed to ethanol for either the four day exposure period used in the previous work, or until determination of brain growth impairment at day 11. This last group of animals were administered a daily dose of ethanol such that they did not have an observable abstinence syndrome. Examination of brain weights on day 11 revealed no differences in the extent of the observed microcephaly between the ethanol exposure conditions, suggesting that withdrawal per se was not responsible for the production of the brain growth retardation.

    Original languageEnglish (US)
    Pages (from-to)115-116
    Number of pages2
    JournalNeurobehavioral Toxicology and Teratology
    Volume4
    Issue number1
    StatePublished - Jan 1 1982

    ASJC Scopus subject areas

    • Neuropsychology and Physiological Psychology
    • Embryology
    • Toxicology

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