Role of hypothermia in the pentobarbital-induced blockade of luteinizing hormone secretion in female rats.

Role of hypothermia in the pentobarbital-induced blockade of luteinizing hormone secretion in female rats.
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低温在戊巴比妥诱导的雌性大鼠黄体生成素分泌阻断中的作用。

DOI:
10.1159/000124822
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发表时间:
1987
期刊:
影响因子:
4.1
通讯作者:
Katovich,MJ
Katovich,MJ
中科院分区:
医学2区
文献类型:
--
作者:
Simpkins,JW;Katovich,MJ

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进行研究以确定巴比妥类药物的低温效应是否是其抑制卵巢切除术或性腺类固醇治疗后大鼠黄体生成素(LH)分泌的能力的原因。在卵巢切除的大鼠和雌激素和孕酮治疗的大鼠中,戊巴比妥引起了显着的体温降低,并阻止LH分泌过多。在卵巢切除大鼠中,戊巴比妥的LH抑制作用可以通过维持正常的核心体温来预防。然而,在类固醇治疗的大鼠中,维持正常的核心体温并不能阻止戊巴比妥诱导的类固醇诱导的LH峰阻滞。这些数据表明,戊巴比妥诱导的卵巢切除大鼠LH分泌的减少是温度依赖性的,而它的类固醇诱导的LH峰的封锁不是。此外,这项研究提供了进一步的证据,差异神经元调节LH分泌卵巢切除术后和激素诱导的LH激增。
Studies were conducted to determine if the hypothermic effects of barbiturates were responsible for their ability to suppress luteinizing hormone (LH) secretion in rats following ovariectomy or treatment with gonadal steroids. In both ovariectomized rats and rats treated with estradiol and progesterone, pentobarbital caused a marked hypothermia and blocked LH hypersecretion. In ovariectomized rats, the LH-suppressing effects of pentobarbital could be prevented by maintaining normal core body temperature. However, in steroid-treated rats, the maintenance of normal core body temperature did not prevent the pentobarbital-induced blockade of the steroid-induced LH surge. These data indicate that the pentobarbital-induced reduction of LH secretion in ovariectomized rats is temperature-dependent, while its blockade of the steroid-induced LH surge is not. Additionally, this study provides further evidence for the differential neuronal regulation of LH secretion following ovariectomy and during the steroid-induced surge in LH.
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