Stimulation of Pituitary Luteinizing Hormone Secretion by Gonadotropin-Releasing Hormone is Not Coupled to β-Luteinizing Hormone Gene Transcription
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منابع مشابه
Control of gonadotropin secretion by follicle-stimulating hormone-releasing factor, luteinizing hormone-releasing hormone, and leptin.
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...
متن کاملLuteinizing Hormone Secretion during Gonadotropin-Releasing Hormone Stimulation Tests in Obese Girls with Central Precocious Puberty
OBJECTIVE Girls with precocious puberty have high luteinizing hormone (LH) levels and advanced bone age. Obese children enter puberty at earlier ages than do non-obese children. We analyzed the effects of obesity on LH secretion during gonadotropin-releasing hormone (GnRH) tests in girls with precocious puberty. METHODS A total of 981 subjects with idiopathic precocious puberty who had underg...
متن کاملLuteinizing hormone-releasing hormone antagonists.
BACKGROUND Luteinizing hormone-releasing hormone (LH-RH) plays a central role in the vertebrate reproduction by regulating gonadal activity. Based on its binding to pituitary LH-RH receptors, as well as to LH-RH receptors expressed on cancer cells, LH-RH agonists and antagonists have been developed for different therapeutic applications. OBJECTIVE/METHOD Here we give an overview of the most r...
متن کاملGonadotropin-releasing hormone action upon luteinizing hormone bioactivity in pituitary gland: role of sulfation.
The regulation of rat luteinizing hormone (rLH) bioactivity was studied in an in vitro system using isolated pituitaries from male rats. Stored and released rLH was evaluated in terms of mass (I-LH), bioactivity (B-LH), mobility in nonequilibrium pH gradient electrophoresis, and mannose and sulfate incorporation either in the presence or absence of gonadotropin-releasing hormone (GnRH). GnRH in...
متن کاملProduction of leukotrienes in gonadotropin-releasing hormone-stimulated pituitary cells: potential role in luteinizing hormone release.
Gonadotropin-releasing hormone (GnRH) stimulated the formation of two major metabolites of the 5-lipoxygenase pathway, leukotriene (LT) B4 and LTC4, as well as luteinizing hormone (LH) release in primary cultures of rat anterior pituitary cells. Several lines of evidence suggested the presence of a GnRH-dependent pituitary endocrine system in which LTs act as second messengers for LH release: (...
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ژورنال
عنوان ژورنال: Molecular Endocrinology
سال: 1988
ISSN: 0888-8809,1944-9917
DOI: 10.1210/mend-2-11-1033