基于TLR4/MyD88/TRAF6信号通路探究电针对类风湿关节炎大鼠滑膜组织的影响

被引:1
|
作者
苏俊贤
张誉
王志朝
罗倩
许志强
李凌瑶
郑双双
机构
[1] 甘肃省庆阳市第二人民医院
关键词
针刺疗法; 电针; 关节炎,类风湿; Toll样受体4; 髓样分化因子88; 肿瘤坏死因子受体相关因子6;
D O I
10.13460/j.issn.1005-0957.2023.10.1102
中图分类号
R245.97 [];
学科分类号
摘要
目的 观察电针干预通过调控Toll样受体4(Toll-like receptor 4, TLR4)/髓样分化因子88(myeloiddifferentiationprimaryresponseprotein88,MyD88)/肿瘤坏死因子受体相关因子6(tumor necrosis factor receptor-associated factor 6, TRAF6)通路对类风湿关节炎大鼠滑膜组织的影响,探究TLR4/My D88/TRAF6信号通路作为电针干预新靶点的可能性。方法 将48只Wistar大鼠随机分为健康组、模型组、电针组和电针通路激活组,每组12只。制备类风湿关节炎大鼠模型,术后采用关节炎指数评分将符合类风湿关节炎诊断标准的大鼠进行后续实验,同时采用关节炎指数评估干预前后关节炎的改善情况。采用苏木精-伊红(hematoxylin-eosin, HE)染色法检测4组大鼠关节损伤及滑膜组织状况,用酶联免疫吸附法(enzyme-linked immunosorbent assay, ELISA)检测关节液肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、白细胞介素-1β(interleukin-1β, IL-1β)和滑膜组织增殖细胞核抗原(proliferating cell nuclear antigen, PCNA)的含量,用流式细胞仪检测软骨细胞凋亡率。采用荧光定量聚合酶链式反应(polymerase chain reaction, PCR)和蛋白印迹(Western blot, WB)法检测4组大鼠滑膜组织TLR4、MyD88、TRAF6 mRNA蛋白的表达。结果 健康组关节结构完整无病变;与健康组比较,模型组大鼠关节结构不完整,出现滑膜增生,关节炎指数评分显著升高(P<0.05),TNF-α、IL-1β和PCNA的含量、软骨细胞凋亡率及滑膜组织中TLR4、MyD88和TRAF6 mRNA蛋白的表达均显著升高(P<0.05);与模型组比较,电针组关节结构相对完好,关节炎指数评分显著降低(P<0.05),TNF-α、IL-1β和PCNA的含量、软骨细胞凋亡率及滑膜组织中TLR4、My D88和TRAF6 mRNA蛋白的表达均显著降低(P<0.05);与电针组比较,电针通路激活组关节炎指数评分显著升高(P<0.05),TNF-α、IL-1β和PCNA的含量、软骨细胞凋亡率及滑膜组织中TLR4、My D88和TRAF6 mRNA蛋白的表达均显著升高(P<0.05)。结论 电针干预可通过调控TLR4/My D88/TRAF6信号通路,改善类风湿关节炎,并保护滑膜组织。
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收藏
页码:1102 / 1108
页数:7
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