加味独活寄生合剂调控PI3K/Akt/mTOR信号通路对膝骨关节炎兔滑膜细胞焦亡的影响

被引:1
作者
叶子丰 [1 ,2 ]
院一蔚 [1 ]
邱礼国 [1 ,2 ]
谭旭仪 [3 ]
欧梁 [3 ]
邝高艳 [2 ]
卢敏 [2 ]
机构
[1] 湖南中医药大学
[2] 湖南中医药大学第一附属医院
[3] 湖南省中医药研究院附属医院
关键词
加味独活寄生合剂; 磷脂酰肌醇3-激酶/蛋白激酶B/哺乳动物雷帕霉素靶蛋白(PI3K/Akt/mTOR)信号通路; 细胞焦亡; 膝骨关节炎;
D O I
10.13422/j.cnki.syfjx.20250739
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
目的:探讨加味独活寄生合剂(JDJM)治疗膝骨关节炎(KOA)滑膜病变的可能机制。方法:将43只新西兰雄性大白兔随机分为空白组(Control组,8只)、模型组(35只)。通过在兔右侧后肢固定高分子树脂石膏绷带建立KOA模型,模型构建周期为6周,成功构建模型32只。随机分为模型组(Model组)、塞来昔布组(Celecoxib组)、JDJM组与JDJM+740Y-P组,每组8只。Celecoxib组予塞来昔布灌胃,单次剂量为0.009 3 g·kg-1,JDJM组给予JDJM单次生药量6.8 mL·kg-1,即4.515 2 g·kg-1灌胃,JDJM+740Y-P组予以4.515 2 g·kg-1生药灌胃+耳缘静脉注射0.15μmol·kg-1 740Y-P,其余各组予以等剂量生理盐水灌胃,每日1次,持续6周。给药结束后测定各组兔膝关节疼痛阈值、膝关节周径,苏木素-伊红(HE)染色检测滑膜组织病理学变化;酶联免疫吸附测定法(ELISA)检测关节液中白细胞介素(IL)-1β、IL-18、肿瘤坏死因子-α(TNF-α)含量;实时荧光定量聚合酶链式反应(Real-time PCR)检测滑膜组织磷脂酰肌醇3-激酶(PI3K)、蛋白激酶B(Akt)、哺乳动物雷帕霉素靶蛋白(mTOR)、NOD样受体蛋白3(NLRP3)、胱天蛋白酶-1(Caspase-1)、消皮素D(GSDMD)mRNA表达;免疫组化(IHC)检测滑膜组织NLRP3、Caspase-1、GSDMD表达;蛋白免疫印迹法(Western blot)检测滑膜组织磷酸化(p)-PI3K/PI3K、p-Akt/Akt、p-mTOR/mTOR、NLRP3、Caspase-1、GSDMD蛋白表达。结果:与Control组比较,Model组兔膝关节周径明显升高,痛阈明显降低,滑膜组织病理评分明显升高(P<0.05),关节液中IL-1β、IL-18、TNF-α含量显著升高(P<0.01),PI3K、Akt、mTOR磷酸化激活且mRNA及蛋白表达显著升高(P<0.01),NLRP3、Caspase-1、GSDMD mRNA及蛋白表达显著升高(P<0.01);与Model组比较,Celecoxib组与JDJM组兔膝关节周径明显减小,痛阈明显升高,滑膜组织病理评分明显降低(P<0.05),关节液中IL-1β、IL-18、TNF-α含量显著降低(P<0.01),p-PI3K、p-Akt、p-mTOR、NLRP3、Caspase-1、GSDMD mRNA及蛋白表达显著降低(P<0.01);与JDJM组比较,JDJM+740Y-P组滑膜病变改善程度明显下降,兔膝关节周径明显升高,痛阈明显降低,滑膜组织病理评分明显降低(P<0.05),且关节液中的IL-1β、IL-18、TNF-α含量显著升高(P<0.01),p-PI3K/PI3K、p-Akt/Akt、p-mTOR/mTOR、NLRP3、Caspase-1、GSDMD mRNA及蛋白表达显著升高(P<0.01)。结论:JDJM对膝骨关节炎疗效明确,可改善KOA膝关节滑膜炎症反应,其作用机制可能涉及对滑膜组织PI3K/Akt/mTOR信号通路的调节,进而抑制细胞焦亡从而减少炎性因子释放,保护骨性结构有关。
引用
收藏
页码:170 / 179
页数:10
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