Androgen status regulates Gnrhr mRNA in vivo. (A) Wildtype male mice received sham or castration (Cx) surgery, and pituitaries were collected 1 week later for analysis of Gnrhr mRNA by qRT-PCR. Data are normalized to Gapdh and represented as mean fold change relative to sham ± SEM. n = 6 animals per group. **, p < 0.01 by Student t-test. (B) Wildtype male mice were Cx with or without physiological DHT replacement, and pituitaries were collected 1 week later. Data are normalized to Ppia and represented as fold change relative to Cx ± SEM. n = 5–6 animals per group. *, p < 0.05 by Student t-test. (C) 6-month old female mice were ovariectomized (Ovx) with or without DHT and pituitaries were collected 1 week later for analysis of Gnrhr mRNA by qRT-PCR. Data are normalized to Gapdh and represented as mean fold change relative to Ovx ± SEM. n = 5–6 animals per group. *, p < 0.05 by Student t-test.