GnRH stimulates ACTH and immunoreactive beta-endorphin release from the rat pituitary in vitro.
GnRH stimulates ACTH and immunoreactive beta-endorphin release from the rat pituitary in vitro.
复制标题
GnRH 在体外刺激大鼠垂体释放 ACTH 和免疫反应性 β-内啡肽。
DOI:
10.1016/0024-3205(88)90175-0
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发表时间:
1988
期刊:
影响因子:
6.1
通讯作者:
Rasmussen,DD
中科院分区:
文献类型:
--
作者:
Gambacciani,M;Yen,SS;Rasmussen,DD
An in vitro perifusion system was used to investigate the effects of GnRH stimulation on LH, ACTH, and immunoreactive β-endorphin (iβ-END) release from ovariectomized (1 week) rat anterior hemipituataries. Either 0, 8 or 80 nM GnRH was administered as a 15 min pulse followed 30 min later by a prolonged 45 min infusion. Both 8 and 80 nM GnRH induced comparable LH release in response to the 15 min as well as the 45 min GnRH stimulation. The initial 15 min exposure to either 8 or 80 nM GnRH did not induce significant changes in ACTH or iβ-END release. In contrast, the subsequent 45 min exposure to 8 nM GnRH induced a significant (p< 0.01) increase in ACTH release, and the 45 min exposure to 80 nM GnRH induced a significant (p< 0.01) increase in ACTH as well as iβ-END release. Equimolar (ie 8 or 80 nM) GnRH receptor antagonist (ANT) blocked the stimulatory effects of GnRH in all cases. These results demonstrate that GnRH can stimulate not only LH but also ACTH and iβ-END release from ovariectomized rat anterior hemipituitaries in vitro, apparently by a GnRH receptor mediated mechanism independent of actual LH release. Although the time course of these responses appears to be consistent with the hypothesis that GnRH-stimulated gonadotropes release paracrine factor (s) which stimulate corticotrope activity, the mechanism of these responses remains to be determined.
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影响因子:
9.3
作者:
Nicholson,WE;Davis,DR;Sherrell,BJ;Orth,DN
通讯作者:
Orth,DN
影响因子:
3.8
作者:
Z. Blumenfeld;R. W. Kuhn;R. Jaffe
通讯作者:
R. Jaffe
DOI:
--
发表时间:
1982
期刊:
Life Science
影响因子:
--
作者:
D. Sobel;A. Vagnucci
通讯作者:
A. Vagnucci
影响因子:
64.8
作者:
G. C. Moriarty;L. L. Garner
通讯作者:
L. L. Garner
DOI:
10.1677/joe.0.0690359
发表时间:
1976
期刊:
The Journal of endocrinology
影响因子:
--
作者:
G. Fink;S. Chiappa;M. Aiyer
通讯作者:
M. Aiyer