Paradoxical elevation of growth hormone by intraventricular somatostatin: possible ultrashort-loop feedback.
Paradoxical elevation of growth hormone by intraventricular somatostatin: possible ultrashort-loop feedback.
复制标题
心室内生长抑素对生长激素的反常升高:可能的超短环反馈。
DOI:
10.1126/science.6110244
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发表时间:
1981
期刊:
影响因子:
--
通讯作者:
McCann,SM
中科院分区:
文献类型:
--
作者:
Lumpkin,MD;Gegro-Vilar,A;McCann,SM
Somatostatin, the growth hormone-inhibiting factor, when microinjected into the third ventricle of the rat brain, paradoxically induced the release of growth hormone. A pituitary site of action having been ruled out, this result supports the concept that exogenous somatostatin within the hypothalamus acts either to suppress the release of somatostatin from somatostatin-containing neurons, possibly via an ultrashort-loop feedback mechanism, or to augment release of hypothalamic growth hormone-releasing factor, thereby inducing a release of growth hormone. Injection of somatostatin into the third ventricle also decreased plasma concentrations of luteinizing hormone, follicle-stimulating hormone, and thyroid-stimulating hormone, probably by inhibiting the release of luteinizing hormone-releasing factor and thyrotropin-releasing factor.
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