SPERMATOGENESIS IN FSH INHIBIN B FEEDBACK

描述：本项目的总体目标是确定 精子中FSH-抑制素B反馈环的生理意义 非人灵长类的产生并描述其细胞机制 牵涉到脑下垂体和睾丸。提出了五个具体目标。 这些研究包括：(1)检验睾丸抑制素B分泌的假设 是关键的负反馈信号，它通过对FSH的影响决定 释放，产生精子的数量；(2)识别旁分泌 卵泡刺激素在睾丸内的作用机制 (3)克隆抑制素α和抑制素α的编码基因 猴体内抑制素受体及产生足够量的猴抑制素B 用于体外研究；(4)在脑下垂体中定位抑制素受体 并研究其在调节FSH负反馈调控中的作用。 抑制素B；(5)检验生发上皮是 Sertoli细胞抑制B分泌的主要调节因子 FSH在这方面的生理作用在很大程度上是允许的。

Description: The overall goal of this project is to determine the physiological importance of the FSH-inhibin B feedback loop in sperm production in the non-human primate and to describe the cellular mechanisms involved in both the pituitary and testis. Five specific aims are proposed. These include (1) to test the hypothesis that testicular inhibin B secretion is the key negative feedback signal that determines, via its effect on FSH release, the number of sperm produced; (2) to identify the paracrine mechanisms within the testis whereby FSH enlarges the population of differentiated spermatogonia; (3) to clone the gene encoding inhibin alpha and the inhibin receptor in the monkey and to produce sufficient monkey inhibin B for in vitro studies; (4) to localize the inhibin receptor in the pituitary and to study its role in mediating the negative feedback control of FSH by inhibin B; (5) to examine the hypothesis that the germinal epithelium is the principal regulator of Sertoli cell inhibin B secretion and that the physiological role of FSH in this regard is largely permissive.