【摘要】 目的:观察补肾益气方对人早孕蜕膜CD4+ T细胞分泌IL-4和IFN-γ的调节作用,探讨其调节母胎界面Th1/Th2免疫保胎机制。方法:将40只成年雌性SD大鼠随机分成两组:补肾益气方组和生理盐水组,分别灌服体积相同的中药和生理盐水,早晚各一次,3天后颈动脉取血;收集孕6～10周行人工流产术的正常孕妇的蜕膜组织,用免疫磁珠方法分离出CD4+T细胞进行培养,分4组:10%胎牛血清为正常对照组(A组),10%中药血清组(B组),20%中药血清组(C组),10%生理盐水血清组(D组),分别培养24、48、72小时,以ELISA检测法检测细胞培养上清中IL-4和IFN-γ的水平。结果:与A组相比,B组和C组的Th2型细胞因子IL-4的水平均显著升高(P<0.05);Th1型细胞因子IFN-γ的水平显著降低(P<0.01),但是B组和C组的结果之间无显著差异。结论:补肾益气方通过促进蜕膜CD4+T分泌IL-4,并抑制其产生IFN-γ,从而促进母胎界面形成Th2优势。更多还原

【Abstract】 Objective:To explore whether the Formula of Tonifying Kidney of Vital Essence can modulate secretion of IL-4 and IFN-γ by the CD4+T cells from human decidua during first trimester,which will lead to further investigate the anti-abortional effect mechanisms of the Formula of Tonifying Kidney of Vital Essence.Methods:40 female adult SD rats were divided randomly into two groups:one group was gavaged with the Formula of Tonifying Kidney of Vital Essence;another was gavaged with normal saline,twice a day for 3 days.The two groups of rats were gavaged with the same volume of the decoction or saline.Thereafter the blood was collected from carotid artery.Human decidua tissues were collected by artificial abortion at 6-10 weeks of gestation.The CD4+ T cells were separated by MACS.CD4+ T cells were divided into four groups during cell culture.Group A was treated with 10% fetal calf serum,which was the control group.Group B was treated with 10% of the rat serum from the herbal medicine;Group C was treated with 20% of the rat serum from the herbal medicin.Group D was treated with the rat serum of the saline control.The supernatants were harvested at 24,48 and 72 h of the culture,respectively.The amounts of IL-4 and IFN-γ in the culture supernatants were measured by ELISA.Results:In both group B and C of the culture the amount of IL-4 was evidently elevated when compared with the control,group A(P<0.05).At the same time the amount of IFN-γ was intensely deminished(P<0.01).Conclusion:The Formula of Tonifying Kidney of Vital Essence promote the secretion of Th2 type cytokine via up-regulating expression of IL-4 and down-regulate secretion of IFN-γ by the decidual CD4+T cells which result in the bias response for Th2 type cytokine at the maternal-fetal interface.更多还原