Molecular Regulation of Gonadotropin Secretion by Gonadotropin Releasing Hormone in Salmonid Fishes
نویسندگان
چکیده
منابع مشابه
Molecular 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 کاملGonadotropin 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...
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Behavioral interactions among social animals can regulate both reproductive behavior and fertility. A prime example of socially regulated reproduction occurs in the cichlid fish Haplochromis burtoni, in which interactions between males dynamically regulate gonadal function throughout life. This plasticity is mediated by the brain, where neurons that contain the key reproductive regulatory pepti...
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The pattern of the gonadotropin-releasing hormone (GnRH) stimulus is critically important in the regulation of pituitary gonadotropin secretion and continuous infusions down-regulate secretion while intermittent pulses maintain luteinizing hormone (LH) and follicle-stimulating hormone (FSH) responsiveness. We examined the effects of pulsatile GnRH administration on pituitary GnRH receptors (GnR...
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Fractionation of hypothalamic extracts on a Sephadex G-25 column separates follicle-stimulating hormone-releasing factor (FSHRF) from luteinizing hormone-releasing hormone (LHRH). The FSH-releasing peak contained immunoreactive lamprey gonadotropin-releasing hormone (lGnRH) by radioimmunoassay, and its activity was inactivated by an antiserum specific to lGnRH. The identity of lGnRH-III with FS...
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ژورنال
عنوان ژورنال: Zoological Science
سال: 2005
ISSN: 0289-0003
DOI: 10.2108/zsj.22.379