NF-κB p65/TNF-α对PPROM孕妇胎膜细胞凋亡的影响

被引:0
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作者
唐石欢
肖玲
李细平
曾莉
周仁慧
李恒
阳孝明
张旋
胡琼
张红梅
张先平
机构
[1] 南华大学附属娄底医院(南华大学衡阳医学院)妇产科
关键词
未足月胎膜早破; NF-κB p65; TNF-α; Caspase-3; 凋亡;
D O I
暂无
中图分类号
R714.433 [];
学科分类号
摘要
目的 探讨核转录因子kappa B p65(nuclear factor-kappa B p65,NF-κB p65)/肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)对未足月胎膜早破(preterm premature rupture of membranes, PPROM)孕妇胎膜细胞凋亡的影响。方法 选取2021年6月至2022年6月于南华大学附属娄底医院分娩的57例孕妇为研究对象,PPROM孕妇27例为试验组,正常足月分娩孕妇30例为对照组,采集分娩时胎膜组织。利用HE染色法观察胎膜组织结构;免疫组织化学法检测胎膜NF-κB p65和磷酸化NF-κB p65(p-NF-κB p65)的表达;TUNEL检测胎膜细胞凋亡;Western Blotting检测胎膜NF-κB p65、p-NF-κB p65、TNF-α和半胱氨酸天冬氨酸蛋白水解酶-3(cysteinyl aspartate specific proteinase-3,Caspase-3)蛋白表达水平;qRT-PCR检测胎膜组织NF-κB p65、TNF-α和Caspase-3 mRNA表达;分析PPROM孕妇胎膜p-NF-κB p65/NF-κB p65比值、TNF-α蛋白表达水平与胎膜细胞凋亡指数的相关性。结果 HE染色结果显示对照组胎膜组织结构较完整,试验组胎膜组织结构排列紊乱、胶原纤维层变薄、细胞胞质呈现大量空泡化;免疫组化结果显示NF-κB p65主要表达于胎膜细胞的细胞质,p-NF-κB p65表达于胎膜细胞的细胞核;试验组胎膜NF-κB p65、TNF-α、Caspase-3蛋白和mRNA表达以及细胞凋亡指数均高于对照组,差异有统计学意义(P<0.05);试验组p-NF-κB p65/NF-κB p65蛋白比值高于对照组(P<0.01);试验组p-NF-κB p65/NF-κB p65蛋白比值与细胞凋亡指数呈正相关(相关系数r1=0.897,P<0.01);试验组p-NF-κB p65/NF-κB p65与TNF-α蛋白表达水平呈正相关(r2=0.835,P<0.01);试验组TNF-α蛋白表达水平与胎膜细胞凋亡指数呈正相关(r3=0.934,P<0.01)。结论 NF-κB p65可通过促进下游基因TNF-α表达,进而上调Caspase-3,引起胎膜细胞凋亡,参与PPROM的发生。
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页码:92 / 96+101+116 +101
页数:7
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