雌性大鼠垂体柄血浆中的免疫反应性促黄体生成素释放因子（LRF）：刺激间脑、海马和杏仁核的影响。
Immunoreactive luteinizing hormone releasing factor (LRF) in pituitary stalk plasma from female rats: effects of stimulating diencephalon, hippocampus and amygdala.
作者信息
Chiappa S A, Fink G, Sherwood N M
出版信息
J Physiol. 1977 Jun;267(3):625-40. doi: 10.1113/jphysiol.1977.sp011829.
Abstract
- Previous studies on the effect of preoptic and median eminence stimulation on the immunoreactive LRF content of pituitary stalk blood from pro-oestrous rats have been extended. Stimulation of the suprachiasmatic nuclei and anterior hypothalamic area produced increments in LRF which were 66 and 18% respectively, of that produced by preoptic stimulation, and 38 and 9%, respectively, of that produced by stimulation of the median emience. Stimulation of the amygdala and hippocampus had no effect. 2. The LRF response was not affected significantly when preoptic stimulation was accompanied by stimulation of the hippocampus. 3. In animals subjected to section of the dorsal afferents of the diencephalon, the LRF response to preoptic stimulation was similar to that in intact rats. However, the facilitatory effect of oestrogen on the LRF response to preoptic stimulation was significantly reduced in the roof sectioned compared with intact animals. The post-operative resumption of oestrous cycles was delayed but not abolished by dorsal deafferentation.
摘要
- 以往关于视前区和正中隆起刺激对动情前期大鼠垂体柄血液中免疫反应性促黄体释放因子（LRF）含量影响的研究得到了拓展。刺激视交叉上核和下丘脑前区所产生的LRF增量，分别为视前区刺激所产生增量的66%和18%，以及正中隆起刺激所产生增量的38%和9%。刺激杏仁核和海马体则没有效果。2. 当视前区刺激与海马体刺激同时进行时，LRF反应没有受到显著影响。3. 在接受间脑背侧传入纤维切断术的动物中，对视前区刺激的LRF反应与完整大鼠相似。然而，与完整动物相比，在进行了顶盖切断术的动物中，雌激素对视前区刺激的LRF反应的促进作用显著降低。术后动情周期的恢复被延迟，但并未因背侧传入纤维切断而被消除。
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