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  • Title: Ethanol inhibits dual receptor stimulation of pineal cAMP and cGMP by vasoactive intestinal peptide and phenylephrine.
    Author: Chik CL, Ho AK, Klein DC.
    Journal: Biochem Biophys Res Commun; 1987 Aug 31; 147(1):145-51. PubMed ID: 2820392.
    Abstract:
    Concurrent activation of vasoactive intestinal peptide and alpha 1-adrenergic receptor resulted in greater than 20-fold increases in pineal cAMP and cGMP accumulation. We now find that an intoxicating level of ethanol (0.2%, 34 mM) inhibits greater than 50% the large increases in pineal cAMP and cGMP produced by concurrent treatment with vasoactive intestinal peptide and phenylephrine. The potency of the various alcohols tested was directly related to their chain length. This inhibition appears to be specific since a five-fold higher concentration of ethanol does not inhibit the stimulation of cAMP and cGMP accumulation produced by concurrent treatment with isoproterenol and phenylephrine. Accordingly, it seems that one mechanism of action of ethanol on neural function may be its ability to selectively inhibit ethanol-sensitive integrative mechanisms which regulate cyclic nucleotides.
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