Title : Gonadotropin-releasing hormone stimulates biosynthesis of prostaglandin F2 alpha by the interrenal gland of the water frog, Rana esculenta, in vitro.

Pub. Date : 1991 Dec

PMID : 1808024






5 Functional Relationships(s)
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1 The present study was carried out to evaluate the in vitro effects of mammalian gonadotropin-releasing hormone (mGnRH) on the production of prostaglandin F2 alpha (PGF2 alpha) and sex steroids (progesterone, androgens, and 17 beta-estradiol) by the interrenal gland of male and female Rana esculenta during three different periods of the sexual annual cycle. Estradiol gonadotropin releasing hormone 1 Mus musculus
2 Progesterone and androgens were undetectable, while 17 beta-estradiol was significantly increased by mGnRH in interrenals incubated during the postreproductive period in both sexes. Estradiol gonadotropin releasing hormone 1 Mus musculus
3 In addition, the simultaneous increase in PGF2 alpha and estradiol from postreproductive cultured interrenals support the notion that mGnRH-induced estradiol synthesis is mediated through PGF2 alpha formation. Estradiol gonadotropin releasing hormone 1 Mus musculus
4 In addition, the simultaneous increase in PGF2 alpha and estradiol from postreproductive cultured interrenals support the notion that mGnRH-induced estradiol synthesis is mediated through PGF2 alpha formation. Estradiol gonadotropin releasing hormone 1 Mus musculus
5 This finding, taken together with other previous studies, strongly suggests that the end of the breeding period in R. esculenta depends on GnRH-induced PGF2 alpha-mediated enhancement of estradiol synthesis in a steroidogenetic organ (probably interrenals). Estradiol gonadotropin releasing hormone 1 Mus musculus