如果对侧卵巢缺失，雄性绿安乐蜥的单个卵巢对外源促性腺激素的反应会更强。

A single ovary of Anolis carolinensis responds more to exogenous gonadotropin if the contralateral ovary is absent.

作者信息

Roth J J, Jones R E

机构信息

Department of Environmental, Population, and Organismic Biology, University of Colorado, Boulder 80309.

出版信息

Gen Comp Endocrinol. 1992 Mar;85(3):486-92. doi: 10.1016/0016-6480(92)90093-y.

DOI:10.1016/0016-6480(92)90093-y

PMID:1577249

Abstract

The lizard Anolis carolinensis exhibits asymmetric ovarian growth. At any given time, the larger ovary (LO) contains a larger follicle than does the smaller ovary (SO). Physiologically hypophysectomized females with quiescent ovaries were treated with gonadotropin (ovine FSH) or saline vehicle after either surgical removal of the LO or sham operation. The smaller ovaries of initial control, sham-operated, and hemiovariectomized (HO) females were similar in weight and follicular size. Therefore, endogenous gonadotropin secretion remained at subthreshold levels during the experiment and after HO. FSH significantly stimulated ovarian follicular growth in both sham-operated and HO females. However, the response of the SO of HO females to FSH was significantly greater than that in sham-operated females. These results demonstrate a greater sensitivity of the SO to FSH if the LO is absent.

摘要

卡罗来纳安乐蜥表现出卵巢不对称生长。在任何给定时间，较大的卵巢（LO）比较小的卵巢（SO）含有更大的卵泡。对生理上垂体切除且卵巢静止的雌性蜥蜴，在手术切除LO或假手术后，用促性腺激素（羊促卵泡素）或生理盐水载体进行处理。初始对照组、假手术组和半卵巢切除（HO）雌性蜥蜴的较小卵巢在重量和卵泡大小上相似。因此，在实验期间和HO后，内源性促性腺激素分泌保持在阈下水平。FSH显著刺激了假手术组和HO雌性蜥蜴的卵巢卵泡生长。然而，HO雌性蜥蜴SO对FSH的反应明显大于假手术组雌性蜥蜴。这些结果表明，如果没有LO，SO对FSH的敏感性更高。