Stimulation of spermiation in carp in response to LH-RH and D-Ala6-LH-RH ethylamide
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منابع مشابه
Gonadotropin response to LH-RH in anorexia nervosa.
The gonadotropin-ovary axis of patients with anorexia nervosa was assessed with the aim of distinguishing between an intrinsically hypophysial deficiency and pituitary malfunction secondary to hypothalamic impairment. The most consistent endocrine abnormality was low serum luteinizing and follicle stimulating hormone (LH and FSH) levels associated with depressed serum estradiol levels. Gonadotr...
متن کاملMotility, mitochondrial membrane potential and ATP content of rabbit spermatozoa stored in extender supplemented with GnRH analogue [des-Gly10, D-Ala6]-LH-RH ethylamide.
The present study was aimed to determine the effect of GnRH analogue [des-Gly10, D-Ala6]-LH-RH ethylamide on the quality of rabbit spermatozoa stored at 17°C for 3 days. Semen from 5 bucks (13 ejaculates) was used in the experiment. Ejaculates were divided and diluted at a 1:10 ratio with rabbit semen extender Galap (IMV, France) (Control) or with Galap extender supplemented with GnRH analogue ...
متن کاملOvulation and Endocrine Response after Lh-rh in Domestic Animals
cows 2 weeks after parturition and in diestrous and proestrous heifers. Serum LH concentrations increased after LH-RH treatment and the greatest response was observed in cows with ovarian follicular cysts. Serum progesterone concentrations were increased at 6 hours after LH-RH in animals which had functional luteal tissue in the ovaries but serum estradiol and estrone were unchanged. Ovarian fo...
متن کاملLuteinizing hormone-releasing hormone (LH-RH) antagonist Cetrorelix down-regulates the mRNA expression of pituitary receptors for LH-RH by counteracting the stimulatory effect of endogenous LH-RH.
The mechanisms through which LH-RH antagonists suppress gonadotroph functions and LH-RH receptor (LH-RH-R) production are incompletely understood. To elucidate these mechanisms, we investigated the effects of Cetrorelix on the mRNA expression of pituitary LH-RH-R and luteinizing hormone (LH) secretion in three experimental systems with different pituitary LH-RH environments. Ovariectomy induced...
متن کاملEffect of LH-RH on the release of sulfated lutropin: a potential in vitro bioassay for LH-RH.
Sheep pituitary cells prelabelled with radioactive [35S] sulfate (35SO4(2-)) were incubated with different concentrations of LH-RH and the release of LH (lutropin) into the medium was monitored in terms of immunoprecipitable [35S] sulfated LH radioactivity and estimation of LH in the same sample by radioimmunoassay. A dose dependent response was obtained with a maximum of a 16 fold increase in ...
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ژورنال
عنوان ژورنال: Aquaculture
سال: 1983
ISSN: 0044-8486
DOI: 10.1016/0044-8486(83)90085-6