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ArticlesCopyright © 1983 by American Association for the Advancement of Science
Light and agonists alter pineal N-acetyltransferase induction by vasoactive intestinal polypeptide
Vasoactive intestinal polypeptide stimulated serotonin N-acetyltransferase activity in rat pineal glands in organ culture by a postsynaptic action that was independent of the beta-receptor. The magnitude of stimulation could be altered by environmental lighting conditions and by prior exposure to the agonist. Such up- and down-regulation, well known for catecholaminergic stimulation of this system, is compatible with a possible control of the pineal by vasoactive intestinal polypeptide as well as by catecholamines.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)