Inhibition of gonadotropin secretion by gonadotropin-inhibitory hormone: it's all in your head
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چکیده
منابع مشابه
Gonadotropin Secretion by Gonadotropin- Hormone in Salmonid Fishes
Gonadotropin-re[ea$ing hormone (GnRH} plays a central role in the control of reproductive function in vertebrates. In salmonids, salmon GnRH (sGnRH) secreted by preoptic GnRH neurons regulates gonada[ maturation through stimulation of synthesis and release of pituitary gonadotropins (GTHs), [n addition, several lines ot our evidence indicate that sGnRH is involved in spawning behavior, and serv...
متن کاملInteractions of gonadotropin-releasing hormone (GnRH) and gonadotropin-inhibitory hormone (GnIH) in birds and mammals.
Gonadotropin-releasing hormone (GnRH) regulates secretion of both of the gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone. Thus, it is a key hormone for vertebrate reproduction. GnRH was considered to be unusual among hypothalamic neuropeptides in that it appeared to have no direct antagonist, although some neurochemicals and peripheral hormones (opiates, GABA, gonadal s...
متن کاملMolecular regulation of gonadotropin secretion by gonadotropin-releasing hormone in salmonid fishes.
Gonadotropin-releasing hormone (GnRH) plays a central role in the control of reproductive function in vertebrates. In salmonids, salmon GnRH (sGnRH) secreted by preoptic GnRH neurons regulates gonadal maturation through stimulation of synthesis and release of pituitary gonadotropins (GTHs). In addition, several lines of our evidence indicate that sGnRH is involved in spawning behavior, and serv...
متن کاملExpression of gonadotropin inhibitory hormone in the preoptic area and its relation with phases of estrous cycle of ewe
Introduction: Gonadotropin inhibitory hormone (GnIH) has been known as a key inhibitor of the secretion of gonadotropin releasing hormone (GnRH). Ewe has estrous cycles comprising of follicular and luteal phases. Follicular phase is in turn divided into proestrous and estrous phases. Blood level of LH increases in follicular and decreases in luteal phases. The aim of the present study was to...
متن کاملThe roles of RFamide-related peptides (RFRPs), mammalian gonadotropin-inhibitory hormone (GnIH) orthologues in female reproduction
Objective(s): To benefit from reproduction and deal with challenges in the environmental conditions, animals must adapt internal physiology to maximize the reproduction rate. Maladaptive variations in the neurochemical systems and reproductive system can lead to manifestation of several significant mammalian reprocesses, including mammalian ovarian lifespan. RFamide-related peptide (RFRP, Rfrp)...
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ژورنال
عنوان ژورنال: The Journal of Physiology
سال: 2009
ISSN: 0022-3751
DOI: 10.1113/jphysiol.2009.170969