Local immune regulatory effects of Bangdeyun on the endometrium of mice with embryo implantation dysfunction during the implantation time

This study examined the effects of Bangdeyun on the expressions of nuclear factor-kappaB （NF-κB）, interferon-gamma （IFN-y） and interleukin-10 （IL-10） in the endometrium of mice with embryo implantation dysfunction （EID） during the implantation time （namely on pregnancy day 5, 6, 7 and 8） and explored the local immune regulatory effects of Bangdeyun. The gestational mice were randomly divided into normal group, model group and Bangdeyun-treated group. EID models of mice were established by using indomethacin. The endometrial expression of NF-κB was detected by immunohistochemistry and Western blotting. IFN-γ and IL-10 were measured by enzyme-linked immunosorbent assay （ELISA）. The results showed that in the normal group, NF-κB and IFN-γ were weakly expressed and IL-10 was strongly expressed in the endometrium during the whole implantation period. In the model group, the expressions of NF-κB and IFN-T were increased on pregnancy day 5, 6 and 7, and IL-10 expression decreased during the whole implantation time when compared with those in the normal group （P〈0.01 for all）. In the Bangdeyun-treated group, little amount of NF-κB and IFN-γ was expressed and IL-10 expression was strong, much the way they were expressed in the normal group （P〉0.05）. The expressions of NF-κB and IFN-T were much lower in the Bangdeyun-treated group than those in the model group on pregnancy day 5, 6 and 7 （P〈0.01 for all）, while the expression of IL-10 was much higher than in the model group during the whole implantation time （P〈0.01）. It was suggested Bangderun may favor a shift from Thl- to Th2-type immune response, therefore inhibiting the maternal immune rejection, inducing the immune tolerance and improving the fetal implantation.     

超排卵对着床的影响及中药帮得孕的改善作用

目的:观察超排卵对小鼠着床的影响和中药帮得孕的改善作用。方法:仿照临床超排卵方案,运用腹腔注射孕马血清促性腺激素(PMSG)10IU,于48h后注射绒毛膜促性腺激素(HCG)10IU的方法造模。观察妊娠第8天正常组、超排卵组、不同剂量帮得孕组小鼠胚泡着床率和平均胚泡着床点数。伊文思蓝染色观察妊娠第5天子宫内膜血管通透性情况,HE染色观察妊娠第5天子宫内膜蜕膜化情况,免疫组化和Western blot方法观察妊娠第5天子宫内膜基质金属蛋白酶-9(MMP-9)的表达。结果:与正常组相比,超排卵组着床率明显下降(P<0.05),与超排卵组相比,帮得孕各剂量组着床率均明显提高(P<0.05);超排卵抑制小鼠子宫内膜血管渗透性,延缓子宫内膜蜕膜化,抑制子宫内膜MMP-9表达,中药帮得孕则有利于促进子宫内膜血管渗透性、促进内膜蜕膜化、促进MMP-9表达。结论:超排卵可致着床障碍,与超排卵药物抑制血管渗透性、抑制子宫内膜蜕膜化和抑制内膜基质降解有关,帮得孕可以一定程度上降低和抵消超排卵这种不良的影响,有利于胚泡成功着床。