Altered release of growth hormone and thyrotropin induced by endotoxin in the rat.
Altered release of growth hormone and thyrotropin induced by endotoxin in the rat.
复制标题
内毒素诱导的大鼠生长激素和促甲状腺素释放的改变。
DOI:
10.1152/ajpendo.1982.243.4.e332
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发表时间:
1982
期刊:
影响因子:
--
通讯作者:
Martin,JB
中科院分区:
文献类型:
--
作者:
Kasting,NW;Martin,JB
Plasma growth hormone (GH) and thyrotropin (TSH) levels were measured in freely behaving rats for 6 h on three consecutive days. On the 1st and 3rd days there was no treatment, and on the 2nd day endotoxin (150 mg/kg) was administered intravenously. Endotoxin causes a biphasic temperature response: an initial hypothermia persisting for 1 h, followed by hyperthermia evident from 5 to 8 h after injection. Normal pulsatile GH release observed on the 1st day was abolished on the 2nd day by the endotoxin treatment. On the 3rd day, however, GH secretion was greater than on the initial control day. TSH release was also suppressed by endotoxin and showed a rebound release on the subsequent day. The suppression of GH secretion by endotoxin was reversed in all animals by antisomatostatin serum, and the suppression of TSH secretion by endotoxin was reversed in some animals. These results suggest that endotoxin is a potent stimulus for hypothalamic somatostatin release in the rat. Endotoxin profoundly alters adenohypophyseal hormone release.
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