19日龄垂体切除和假手术处理的鸡胚卵巢雌二醇的分泌

Estradiol secretion by the ovary of 19-day-old hypophysectomized and sham-operated chick embryos.

作者信息

Weniger J P, Chouraqui J, Zeis A

机构信息

Laboratoire de Zoologie et d'Embryologie Expérimentale de l'Université Louis-Pasteur, Strasbourg, France.

出版信息

J Steroid Biochem. 1990 Apr;35(5):607-9. doi: 10.1016/0022-4731(90)90205-7.

DOI:10.1016/0022-4731(90)90205-7

PMID:2355735

Abstract

The amounts of estradiol released into culture media by ovaries from 19-day-old hypophysectomized (decapitated) and sham-operated chick embryos were determined by RIA. Per single ovary, ovaries from decapitated embryos secreted slightly less estradiol than ovaries from sham-operated ones during a 4-h culture period (837 +/- 413 vs 935 +/- 378 pg), but this difference was not significant. On an ovarian weight basis, ovaries from decapitated embryos secreted slightly more estradiol than ovaries from sham-operated ones (1.15 vs 0.91 ng), but this difference was not significant either. It is concluded from these results that the hypophysis does not control estradiol secretion by the ovary in the 19-day-old chick embryo.

摘要

通过放射免疫分析法（RIA）测定了19日龄垂体切除（断头）和假手术处理的鸡胚卵巢释放到培养基中的雌二醇量。在4小时的培养期内，单枚垂体切除胚胎的卵巢分泌的雌二醇略少于假手术处理胚胎的卵巢（分别为837±413皮克和935±378皮克），但这种差异不显著。以卵巢重量为基础，垂体切除胚胎的卵巢分泌的雌二醇略多于假手术处理胚胎的卵巢（分别为1.15纳克和0.91纳克），但这种差异也不显著。从这些结果可以得出结论，垂体并不控制19日龄鸡胚卵巢的雌二醇分泌。