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Central regulation of gonadotropin secretion: Roles of neuropeptides and amines in the feedback regulation of gonadotropin secretion by ovarian steroid hormones. Fukuko KIMURA 1 , Jun ARITA 1 1Department of Physiology, Yokohama City University School of Medicine pp.55-65
Published Date 1989/2/10
DOI https://doi.org/10.11477/mf.1431906262
  • Abstract
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The secretion of gonadotropin from the anterior pituitary gland is regulated by feedback actions of ovarian and testicular steroid hormones such as estradiol, progesterone and testosterone. In addition to their negative feedback actions on gonadotropin, estradiol and progesterone exert positive feedback actions to induce ovulatory surges of gonadotropin secretion in female animals. In the regulation of these positive feedback actions, the brain, in particular, the hypothalamus plays important roles which involve the reception of ovarian hormones, generation of circadian rhythms, secretion of luteinizing hormone releasing hormone (LHRH) and integration of these three functions. Furthermore, a variety of neuropeptides and amines has been suggested to be involved as neurotransmitters or neuromodulators in the brainfunctions for the regulation of the positive feedback actions. In this review, we have discussed how the neuropeptides and amines are involved in the regulation of positive feedback actions of ovarian hormones on the basis of results obtained from studies using the rat.


Copyright © 1989, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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