山羊子宫内肽能神经分布及妊娠时的变化

采用免疫组化方法，研究了山羊子宫内含P物质（SP）和含血管活性肠肽（VIP）神经的分布。结果，妊娠及未妊娠山羊子宫颈内有粗细不等的神经束行经于外膜和肌层中，神经分支形成丛状分布于血管壁，子宫颈部未见SP神经元胞体及VIP神经元胞体；未妊娠山羊子宫角内SP神经和VIP神经均呈丛状围绕血管并分布于血管壁；妊娠中期的孕角和非孕角均有胎盘形成，除胎盘内无神经分布外，SP神经及VIP神经同样分支形成丛状分布于血管壁。结果提示，山羊子宫内SP神经和VIP神经主要支配子宫内血管，妊娠时除胎盘内无神经分布外，SP神经及VIP神经的分布无明显变化。

Distribution of peptidergic nerves in nonpregnant uteri and the nervous change in pregnant goat uteri

The distribution of SP nerves and VIP nerves in nonpregnant and in midpregnant goat uteri was studied immunohistochemically with light microscope.In nonpregnant and in midpregnant cervixes SP nerves and VIP nerves innervated blood vessels.Bundles of nerves ran in the adventitia and muscular coats of cervix but no nervous cell bodies were seen.The distribution of nerves in nonpregnant and in midpregnant cervixes showed no significant difference.In the nonpregnant uterine horns SP nerves and VIP nerves innervated the blood vessels but no bundles of nerves were seen.In midpregnant uterus the placentae formed in both nonpregnant horn and pregnant horn.The blood vessels in both horns were innervated by SP nerves and VIP nerves except placentae without nerves.The results suggest that SP nerves and VIP nerves mainly innervate blood vessels in goat uterus.The distribution of SP nerves and VIP nerves presents no significant difference between nonpregnant and midpregnant goat uteri except placentae without nerves.