Sympathetic regulation of circadian rhythm of serotonin N-acetyltransferase activity in pineal gland of infant rat.

Abstract

The circadian rhythms of serotonin N-acetyltransferase activity in the pineal glands of infant and adult rats were compared. The nighttime increase of N-acetyltransferase activity in the pineals of infant rats was blocked by removal of superior cervical ganglion or by pretreatment with reserpine, l-propranolol, and cycloheximide. Injection of isoproterenol… (More)

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