阻断交感神经对小鼠胚胎植入和子宫局部免疫的影响

目的探究交感神经对小鼠妊娠早期胚胎发育作用的机制。方法利用组织学、免疫组织化学和酶联免疫吸附（ELISA）方法观察化学阻断剂6．羟多巴胺（6．OHDA）损毁交感神经对小鼠妊娠早期子宫局部免疫水平和早期胚胎发育的影响。结果化学损毁交感神经后，小鼠受孕率下降，胚胎植入数减少约64．4％；妊娠鼠子宫内膜固有层不发达，微血管分布少；子宫CD4^＋T细胞略有增多，而CD8^＋T细胞明显增加，特别在E3和E5，与对照组比较差异极显著（P〈0．01）；细胞因子IL-2含量升高，尤其E5升高最明显，达3．6倍，而IL-4含量仅在E5有明显升高，1L-2，1L-4比值显著升高。结论交感神经对孕小鼠子宫内膜组织学结构和子宫CD4^＋／CD8^＋T细胞与Th1／Th2细胞比值的影响可能是调控胚胎植入和早期发育的机制之一。

The Roles of Sympathetic Nerve on Embryo Implantation and Local Immunity in Uterus of Mice

Objective To explore the effect mechanism of sympathetic nerve on early developing embryo of mice. Methods The model of sympathectomy mouse was established by 6-OHDA injected intraperitoneally.The early developing mice embryo and lymphocytes in uterus were observed using histology,immunohistochemistry and ELISA methods. Results In sympathectomy mouse,the number of embryo implantation was decrease to 64.4%,endometrial lamina propria and vascellum were shortfall.The numbers of CD4~ T cell and CD8~ T cell in sympathectomy mice were larger than ones in control groups,especially,the number of CD8~ T cells at E3 and E5 differed highly(P<0.01).The quantity of IL-2 in sympathectomy mouse increased,and it was the highest at E5,increased to 3.6 times.The quantity of IL-4 was higher than that of control mouse only at E5,and the IL-2/IL-4 increased in sympathectomy mouse uterus.Conclusion Changes of uterus histology and CD4~ ,CD8~ T cells and Th1/Th2 cells are the ones of effects of sympathetic nerve on early embryo development.