Intrahypothalamic implants of progesterone inhibit lordosis behavior in ovariectomized, estrogen-treated rats.

摘要: Intracranial implants of crystalline progesterone (P) were used to examine the site action P’s facilitatory and inhibitory effects on lordosis behavior in ovariectomized, estradiol-benzoate (EB)-primed rat. P implanted medial basal hypothalamus (MBH) 1 h prior subcutaneous (s.c.) EB injection inhibited response a systemic 44 after (concurrent inhibition). MBH did not facilitate when injection, but this same implant 68 (sequential Cholesterol (Choi) inhibit either concurrent or sequential inhibition experimental paradigms. The results indicate that is an important sexual receptivity