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“Here we demonstrate that the glutamate receptor agonist, N‐methyl‐D‐aspartic acid (NMDA), nitric oxide (NO) and cGMP each repress expression of the gonadotropin‐releasing hormone (GnRH) gene in the hypothalamic cell line, GT1.”
“In addition, a significant increase in the peak LH amplitude (p less than 0.05) and the slope … amplitude (p less than 0.05) were observed for the 120 min GnRH pulse in regime C and D indicating that prior exposure …-term pulses of GnRH increased the … secretory response.”
“Preincubation of the pituitaries for 1 h with … antagonistic analogs [Ac Dp Cl Phe1,2, D Trp3, D Phe6, D Ala10] LHRH and [Ac Dp … Phe1,2, D Trp3, D Arg6, D Ala10] LHRH inhibited the secretion of LH and FSH induced … 2.5 x 10(-9)M LHRH.”