Estrous cycle variation of afferent fibers supplying reproductive organs in the female rat.
Estrous cycle variation of afferent fibers supplying reproductive organs in the female rat.
复制标题
供应雌性大鼠生殖器官的传入纤维的发情周期变化。
DOI：
10.1016/0006-8993(92)91572-v
复制
发表时间：
1992
期刊：
影响因子：
2.9
通讯作者：
Sato,Y
中科院分区：
文献类型：
--
作者：
Robbins,A;Berkley,KJ;Sato,Y
在发情周期的不同日期，记录处女雌性大鼠腹下神经和盆腔神经分支的多单位传入神经活动。在每只大鼠中，测试了腹下神经纤维对子宫扩张的反应和盆腔神经纤维对阴道扩张的反应。对于腹下神经纤维和盆腔神经纤维来说，引起反应所需的最小压力在动情间期最高。对于腹下神经来说，在发情前期和发情期间所需的最小压力都显着较低，而对于盆腔神经来说，仅在发情前期当天的压力才显着较低。这些结果表明，盆腔和腹下神经中传入纤维的整体反应敏感性受到整个动情周期中荷尔蒙变化的不同影响，从而增强了生殖能力。
Multi-unit afferent nerve activity was recorded from branches of the hypogastric and pelvic nerves in virgin female rats on different days of the estrous cycle. In each rat, the response of hypogastric nerve fibers to uterine distention and the response of pelvic nerve fibers to vaginal distention was tested. The minimal pressure necessary to evoke a response was highest in diestrus for both the hypogastric and pelvic nerve fibers. For the hypogastric nerve, the minimal necessary pressures were significantly lower during both proestrus and estrus, whereas for the pelvic nerve, the pressure was significantly lower only on the day of proestrus. These results suggest that the overall response sensitivity of afferent fibers in the pelvic and hypogastric nerves are differentially affected by hormonal variations occurring across the estrous cycle in a manner that would enhance reproduction.