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and is mediated by central NMDA receptors. Fetal LH and FSH secretion and the response to LH - RH decrease in late gestation in the ovine and human fetus. The relative importance of sex steroid dependent and sex ...
proteins act as permissive or rate-limiting factors in the releasing pathway. In response to an increased GnRH stimulus, the initial release of LH is thus rate-limited by the relatively low concentration ...
(±sem) peak LH response induced by LHRH. **, P < 0.01 vs. its own basal levels; +, P < 0.05 vs. control basal levels (n = 4 monkeys in each group). LH pulsatility assessments Representative LH secretory ...
E2 and high P4 (n = 11); low E2 and high P4 (n = 11); low E2 and low P4 (n = 10). At 48 h, gonadotropin-releasing hormone (GnRH)- induced luteinizing hormone ( LH ) and follicle stimulating hormone (FSH ...
human chorionic gonadotropin and recombinant human ( rh ) LH , and 2) (pituitary) LH responses to experimental manipulation of negative feedback using antiestrogen, antiandrogen, T, or estradiol infusions ...
in hypothalamic GnRH levels between the vehicle-treated and atrazine-treated animals. After the fifth treatment , subcutaneous administration of kisspeptin (at 0, 0.1, 1, and 10 nmol/kg) induced a dose-dependent LH ...
in a low or sub-optimal response to OS (Alviggi et al., 2016a; Conforti et al., 2019a, 2019c). Figure 3. Open in new tabDownload slide LH and FSH deficiency is a spectrum of conditions with various ...
. For example, the first monkey ( Rh 9) in Fig. 2 in which relatively low GnRH levels were observed was postmenopausal, the second monkey ( Rh 8) with high GnRH levels was also postmenopausal, whereas the third ...
, which start to replicate and synthesize steroid hormones, inducing antrum formation and supporting oocyte maturation. At the early follicular phase, relatively low LH levels are produced, and it has been ...
the hypothesis that LH -regulated genes will display a similar change of expression during spontaneous luteal regression as during GnRH antagonist- induced luteolysis. Materials and methods Animal treatment ...
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