Hormones that are secreted by the pituitary gland, and that affect the function of the male or female gonads. See follicle-stimulating hormone, human chorionic gonadotropin.
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1. A hormone capable of promoting gonadal growth and function; such effects, as exerted by a single hormone, usually are limited to discrete functions or histologic components of a gonad, such as stimulation of follicular growth or of androgen formation; most gonadotropins exert their effects in both sexes, although the effect of a given g. will differ in males and females. 2. Any hormone that stimulates gonadal function. 3. Any substance that has the combined effects of follicle-stimulating hormone and luteinizing hormone. SYN: gonadotrophin, gonadotropic hormone.
- anterior pituitary g. any g. of hypophysial origin; formerly used to designate a single hormone, because it was thought that the anterior hypophysis secreted only one g.. SYN: pituitary gonadotropic hormone.
- chorionic g. (CG) a glycoprotein with a carbohydrate fraction composed of d-galactose and hexosamine, extracted from the urine of pregnant women and produced by the placental trophoblastic cells; its most important role appears to be stimulation, during the first trimester, of ovarian secretion of the estrogen and progesterone required for the integrity of conceptus; it appears to play no significant role in the last two trimesters of pregnancy, as the estrogen and progesterone are then formed by the placenta. SYN: β-HCG, choriogonadotropin, chorionic gonadotropic hormone, chorionic gonadotrophic hormone, placenta g., placentagonadotropin.
- human chorionic g. (HCG, hCG) chorionic g..
- β-human chorionic g. a 145-amino acid subunit unique to HCG, which has the same α-chain as FSH, LH, and TSH. Pregnancy tests specific for β-HCG are more sensitive since there is no confusion with other gonadotropins secreted by the pituitary.
- human menopausal g. (HMG, hMG) a hormone of pituitary originally obtained from the urine of postmenopausal women now produced synthetically; used to induce ovulation. SEE ALSO: menotropins.
- placenta g. (pla-sen′ta-go′nad-o-tro-pin) SYN: chorionic g..

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go·nad·o·tro·pin -'trō-pən also go·nad·o·tro·phin -fən n a gonadotropic hormone (as follicle-stimulating hormone) see human chorionic gonadotropin

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go·nado·tro·pin (go″nə-do-troґpin) any hormone that stimulates the gonads, especially follicle-stimulating hormone and luteinizing hormone. See also chorionic g. Called also gonadotropic hormone.

Medical dictionary. 2011.

Look at other dictionaries:

  • gonadotropin — n. (Physiology) A hormone secreted by the pituitary gland and placenta, which stimulates the gonads and controls reproductive activity. Syn: gonadotropic hormone. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • gonadotropin — [gō nad΄ō trō′fingō nad΄ō trō′pin] n. a hormone that supports and stimulates the function and growth of the gonads: also gonadotrophin [gō nad΄ō trō′fin] gonadotropic [gō΄nad ōträp′ik] adj. gonadotrophic [gō nad΄ōträf′ik, gō nad΄ōtrō′fik] …   English World dictionary

  • Gonadotropin — Gonadotropins are protein hormones secreted by gonadotrope cells of the pituitary gland of vertebrates. Gonadotropin is sometimes abbreviated Gn . The British spelling is gonadotrophin .TypesThe two principal gonadotropins are luteinizing hormone …   Wikipedia

  • Gonadotropin — Gonadotrophine Les gonadotrophines ou gonadotropines sont des hormones glycoprotéiques complexes agissant sur les fonctions des gonades (ovaires et testicules). Deux de ces hormones sont sécrétées chez tous les vertébrés par l hypophyse… …   Wikipédia en Français

  • gonadotropin — /goh nad euh troh pin, gon euh doh /, n. Biochem. a gonadotropic substance. Also, gonadotrophin /goh nad euh troh fin, gon euh doh /. Cf. chorionic gonadotropin. [1935 40; GONADOTROP(IC) + IN2] * * * …   Universalium

  • gonadotropin — noun hormone secreted by the anterior pituitary gland and placenta; stimulates the gonads and controls reproductive activity • Syn: ↑gonadotrophin, ↑gonadotropic hormone, ↑gonadotrophic hormone • Derivationally related forms: ↑gonadotropic •… …   Useful english dictionary

  • gonadotropin — also gonadotrophin noun Date: 1931 a gonadotropic hormone (as follicle stimulating hormone) …   New Collegiate Dictionary

  • Gonadotropin — Dieser Artikel oder Abschnitt ist nicht hinreichend mit Belegen (Literatur, Webseiten oder Einzelnachweisen) versehen. Die fraglichen Angaben werden daher möglicherweise demnächst gelöscht. Hilf Wikipedia, indem du die Angaben recherchierst und… …   Deutsch Wikipedia

  • gonadotropin — См. gonadotrophin …   Dictionary of invertebrate zoology

  • gonadotropin — noun any of a group of protein hormones secreted by gonadotrope cells of the pituitary gland of vertebrates …   Wiktionary

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