Th17/Treg平衡与正常妊娠及子痫前期关系的研究

目的:探讨Th17及CD4+CD25+Foxp3+调节性T(regulatory T,Treg)细胞介导的免疫反应在子痫前期发病中的作用。方法:选取在山东大学齐鲁医院进行产前检查的子痫前期患者25例及正常晚孕期妇女27例,并选取育龄期健康未孕妇女20例。利用流式细胞技术检测3组患者血样中分泌IL-17的Th17及CD4+CD25+Foxp3+Treg细胞亚群占CD4+T淋巴细胞的百分比,并计算Th17/Treg比率,比较其在子痫前期与正常妊娠时的变化;再用酶联免疫吸附试验(ELISA)检测3组患者外周血中IL-17、IL-10、TGF-β1等细胞因子的表达并进行比较。结果:(1)与正常未孕组及正常妊娠组相比,子痫前期患者外周血中分泌IL-17的Th17细胞占CD4+T淋巴细胞百分比明显升高(P<0.01),CD4+CD25+Foxp3+Treg细胞占CD4+T淋巴细胞百分比明显降低(P<0.01);与正常未孕组相比,正常妊娠组Th17细胞的比例明显降低(P<0.01),Treg细胞比例明显升高(P<0.05);(2)子痫前期患者外周血中Th17/Treg比率明显高于正常未孕组及正常妊娠组(P<0.01),正常妊娠组外周血中Th17/Treg比率与健康未孕组相比明显降低(P<0.01);(3)子痫前期患者外周血中IL-17及TGF-β1的TGF-β1表达明显高于正常未孕组及正常妊娠组(P<0.05),而IL-10的表达未见明显差异(P>0.05);与正常未孕组相比,正常妊娠组外周血中IL-17、IL-10及TGF-β1的水平均未见明显变化(P>0.05)。结论:正常妊娠可能依赖于Treg细胞介导的免疫耐受状态,子痫前期患者外周血中Th17/Treg之间的平衡失调而倾向于Th17介导的促炎状态,这一机制可能参与了子痫前期的发生发展。

The role of Th17/Treg balance in normal pregnancy and preeclampsia

Objective:To investigate the role of immune response induced by T-helper 17 and CD4+CD25+Foxp3+regulatory T(Treg)cell in the pathogenesis of preeclmpsia.Methods:A total of 25 preeclampsia patients and 27 healthy late-pregnant women who underwent antenatal examinations in Qilu hospital,Shandong University and 20 healthy non-pregnant women were inrolled in this study.We examined and compared the frequencies of IL-17-producing CD4+cells as Th17 and CD4+CD25+Foxp3+Treg cells which were expressed as a percentage...