Short- and long-term effects of hypophysectomy and unilateral ovariectomy on ovarian follicular populations in sheep.
Short- and long-term effects of hypophysectomy and unilateral ovariectomy on ovarian follicular populations in sheep.
复制标题
垂体切除术和单侧卵巢切除术对绵羊卵巢卵泡群的短期和长期影响。
DOI：
10.1530/jrf.0.0570301
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发表时间：
1979
期刊：
影响因子：
--
通讯作者：
P. Mauleón
中科院分区：
文献类型：
--
作者：
J. Dufour;L. Cahill;P. Mauleón
在治疗后第4天和第70天，测定垂体切除术和单侧卵巢切除术对颗粒细胞大于3层的卵泡总数的影响。腔前卵泡（直径小于0.23 min）的数量。被发现在促性腺激素的控制下，但这种控制仅在长期基础上是明显的。在单侧卵巢切除后70天，腔前卵泡的数量有很大的增加，但在垂体切除后70天，有一个很大的减少。窦卵泡（直径大于0.23 mm）的数量。在促性腺激素的直接控制下垂体切除后4天，所有大的窦状卵泡都已闭锁，治疗后70天，窦状卵泡的数量进一步减少。在单侧卵巢切除后70天，有腔卵泡的数量增加。治疗后70天，垂体切除母羊的卵泡生长率下降，但单侧卵巢切除后母羊的卵泡生长率增加。
The effects of hypophysectomy and unilateral ovariectomy on the total number of follicles with greater than 3 layers of granulosa cells were determined at 4 and 70 days following treatment. The population of preantral follicles (less than 0.23 min diam.) was found to be under the control of gonadotrophins but such control was only evident on a long-term basis. At 70 days after unilateral ovariectomy there was a large increase in the number of preantral follicles but at 70 days after hypophysectomy there was a large decrease. The population of antral follicles (greater than 0.23 mm diam.) was under the immediate control of gonadotrophins. By 4 days after hypophysectomy all large antral follicles had become atretic and the number of antral follicles was further decreased at 70 days after treatment. At 70 days after unilateral ovariectomy there was an increase in the number of antral follicles. The follicular growth rates at 70 days following treatment were decreased in hypophysectomized ewes but increased in ewes after unilateral ovariectomy.