黄芪多糖抑制Toll样受体4/核因子κB p65通路治疗大鼠膝骨关节炎

被引:26
作者
陈景涛
陈有
李玉静
刘志刚
机构
[1] 河南大学第一附属医院骨科
关键词
黄芪多糖; 膝骨关节炎; 炎症; Toll样受体4; 核因子κB p65; 大鼠;
D O I
暂无
中图分类号
R285.5 [中药实验药理];
学科分类号
100806 [中药药理学];
摘要
背景:黄芪多糖治疗骨关节炎具有一定的作用,Toll样受体4/核因子κB通路在膝骨关节炎发病机制中发挥重要作用。目的:探讨黄芪多糖对膝骨关节炎的干预作用及其机制。方法:40只SD大鼠随机分为对照组、模型组、黄芪多糖低剂量组、黄芪多糖高剂量组和脂多糖组(n=8),除对照组之外,其余各组均建立膝骨关节炎模型。造模成功1周后,黄芪多糖低、高剂量组分别向大鼠膝关节腔内注射质量浓度为0.1,0.5 g/L的黄芪多糖生理盐水溶液0.2 mL,脂多糖组注射0.5 g/L黄芪多糖0.2 mL+500μg/kg脂多糖0.2 mL;模型组和对照组同法注射等量生理盐水;均3 d注射1次,干预6周。干预结束后,苏木精-伊红、番红O-固绿染色观察软骨、滑膜组织病理学变化,采用Mankin’s评分和国际骨关节炎研究协会评分进行评估;ELISA法检测滑膜组织中白细胞介素1β、白细胞介素6、肿瘤坏死因子α、一氧化氮、丙二醛、超氧化物歧化酶表达水平;Western blot检测软骨组织中聚集蛋白聚糖、Ⅱ型胶原、基质金属蛋白酶3及核因子κB p65、Toll样受体4、MyD88表达。结果与结论:(1)与模型组相比,黄芪多糖低、高剂量组的Mankin’s评分、国际骨关节炎研究协会评分、白细胞介素1β、白细胞介素6、肿瘤坏死因子α、一氧化氮、丙二醛、基质金属蛋白酶3水平及核因子κB p65、Toll样受体4、MyD88表达均显著降低,聚集蛋白聚糖、Ⅱ型胶原表达及超氧化物歧化酶活性均显著升高(P <0.05),且黄芪多糖高剂量组均较低剂量组作用更明显(P <0.05);(2)与黄芪多糖高剂量组比,脂多糖组Mankin’s评分、国际骨关节炎研究协会评分、白细胞介素1β、白细胞介素6、肿瘤坏死因子α、一氧化氮、丙二醛、基质金属蛋白酶3水平及核因子κB p65、Toll样受体4、MyD88表达均显著升高,聚集蛋白聚糖、Ⅱ型胶原表达及超氧化物歧化酶活性均显著降低(P <0.05);(3)提示黄芪多糖可通过抑制Toll样受体4/核因子κB p65通路的激活改善膝骨关节炎的胞外基质降解、炎症反应和氧化应激水平,改善关节损伤。
引用
收藏
页码:5002 / 5008
页数:7
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