alexa Prolonged ethanol inhalation decreases gamma-aminobutyric acidA receptor alpha subunit mRNAs in the rat cerebral cortex.
Neurology

Neurology

International Journal of Neurorehabilitation

Author(s): Montpied P, Morrow AL, Karanian JW, Ginns EI, Martin BM,

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Abstract Ethanol administration to rats by ethanol vapor inhalation (14 days) results in a 40-50\% reduction in the level of gamma-aminobutyric acidA (GABAA) receptor alpha 1 subunit mRNAs [4.4 and 4.8 kilobases (kb)] in the cerebral cortex. The level of alpha 2 subunit mRNA (8.0 kb) was also reduced by 29\%, whereas there was no effect of prolonged ethanol exposure on the level of alpha 3 subunit mRNA (3.1 kb). Ethanol exposure did not alter the steady state levels of cerebral cortical glutamic acid decarboxylase or beta-actin mRNAs. Moreover, no alterations in the levels of total RNA, poly(A)+ RNA, or rRNA were observed, suggesting that the ethanol-induced reductions in GABAA receptor alpha 1 and alpha 2 subunit mRNAs were not the result of a generalized effect of ethanol administration on transcription or mRNA turnover. These ethanol-induced reductions in GABAA receptor alpha subunit mRNAs may underlie alterations in GABAA receptor function or number observed following prolonged ethanol exposure in rats.
This article was published in Mol Pharmacol and referenced in International Journal of Neurorehabilitation

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