Suppression of Human Growth Hormone Secretion by Melatonin and Cyproheptadine

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Abstract

Pituitary growth hormone (GH) release in the rat is stimulated via serotoninergic pathways and can be inhibited by treatment with compounds that act as serotonin antagonists, such as cyproheptadine or the pineal gland hormone, melatonin. To investigate a possible role for serotonin in the control of human GH release, the effects of cyproheptadine and melatonin administration on the GH responses of normal male subjects were examined.

Authors

G. A. Smythe, L. Lazarus