摘要
目的观察电针对佐剂性关节炎(Adjuvant arthritis,AA)大鼠踝关节的保护作用以及HIF-1α/MDM2/p53信号通路表达的影响。方法将SD大鼠随机分为对照组、模型组、假电针组、激动剂组、电针组、电针+拮抗剂组、拮抗剂组,每组10只。大鼠注射弗氏完全佐剂制备AA模型,电针组和电针+拮抗剂组大鼠予以电针干预;假电针组大鼠予以电刺激处理;电针+拮抗剂组和拮抗剂组大鼠注射诱导缺氧诱导因子1α(Hypoxia-inducible factor-1α,HIF-1α)拮抗剂;激动剂组大鼠注射HIF-1α激动剂。采用关节炎指数评分评估AA大鼠的关节炎严重程度,苏木素-伊红(HE)法观察各组大鼠踝关节的关节炎症情况,酶联免疫吸附试验(ELISA)检测大鼠血清HIF-1α表达,荧光定量PCR(RT-PCR)和蛋白免疫印迹法(Western blot)分别检测各组大鼠滑膜组织HIF-1α、血管内皮生长因子(Vascular endothelial growth factor,VEGF)、细胞内鼠双微体2(Murine double minute 2,MDM2)、p53的mRNA和蛋白表达情况。结果与模型组比较,电针组、电针+拮抗剂组和拮抗剂组大鼠的关节炎指数评分、HE染色评分和血清HIF-1α表达显著降低(P<0.01),而假电针组、激动剂组大鼠的关节炎指数评分、HE染色评分和血清HIF-1α表达与模型组无显著差异(P>0.05)。RTPCR和Western blot结果显示,与模型组比较,电针组、电针+拮抗剂组和拮抗剂组大鼠的HIF-1α、VEGF、MDM2的mRNA和蛋白表达均显著降低,而p53的mRNA和蛋白表达显著提高(P<0.01)。假电针组、激动剂组大鼠的HIF-1α、VEGF、MDM2、p53的mRNA和蛋白表达无显著差异(P>0.05)。结论电针干预对AA大鼠的踝关节炎症有显著的保护作用,HIF-1α/MDM2/p53信号通路在其中起着关键的介导作用。
Objective To observe the protective effect of electroacupuncture(EA)on ankle joint synovitis and HIF-1α/MDM2/p53 signaling pathway in adjuvant arthritis(AA)rats.Methods SD rats were randomly divided into control group,model group,sham EA group,agonist group,EA group,EA+antagonist group,antagonist group,with 10 rats in each group.Preparation of AA rat model by injecting Freund's complete adjuvant into bilateral foot pads of rats.EA(2 Hz,3 V)was applied to bilateral ST36 and GB39 or two control points(5 mm left to ST36 and GB39)for 15 min,once every other day for a total of 8 times.HIF-1αagonists and antagonists were injected into the tail vein of rats in the corresponding groups.The inflammatory conditions of the ankle joint were observed by HE staining,and the contents of serum HIF-1αwas assayed by ELISA.mRNA expression of HIF-1α,VEGF,MDM2 and p53 were detected by RTPCR,protein expression of HIF-1α,VEGF,MDM2 and p53 were detected by Western blot in synovium of AA rats.Results The results of HE staining showed that compared with the control group,the synovial cells in the model group had significant proliferation and inflammatory cell infiltration(P<0.01);Compared with the model group,the arthritic reaction of the rats in the EA group,the EA+antagonist group and the antagonist group was significantly reduced(P<0.01),while the arthritic reaction of the rats in the sham EA group and the agonist group was still serious(P>0.05).The results of ELISA showed that compared with the control group,the serum HIF-1αexpression of the model group rats was significantly increased(P<0.01);Compared with model group,serum HIF-1αexpression of rats in EA group,EA+antagonist group and antagonist group was significantly decreased(P<0.01);There was no significant difference in serum HIF-1αexpression among the model group,sham EA group and agonist group(P>0.05).RT-PCR results showed that compared with the control group,the mRNA expression of HIF-1α,VEGF,MDM2 and p53 of model group rats increased significantly;Compared with model group,the mRNA expression of HIF-1α,VEGF and MDM2 of rats in EA group,EA+antagonist group and antagonist group decreased significantly,while the mRNA expression of p53 increased significantly.Western blot results showed that compared with the control group,the protein expression of HIF-1α,VEGF,MDM2 and p53 of model group rats increased significantly;Compared with model group,the mRNA expression of HIF-1α,VEGF and MDM2 of rats in EA group,EA+antagonist group and antagonist group decreased significantly,while the mRNA expression of p53 increased significantly.Conclusion Electroacupuncture intervention has significant protective effect on ankle inflammation in AA rats,HIF-1α/MDM2/p53 signaling pathway plays a key role in this process.
作者
蒋雨晴
苏程果
周海燕
姜建振
叶江南
罗芳
朱俊
Jiang Yuqing;Su Chengguo;Zhou Haiyan;Jiang Jianzhen;Ye Jiangnan;Luo Fang;Zhu Jun(Department of Acupuncture-moxibustion and Tuina,Chengdu University of Traditional Chinese Medicine,Chengdu 610075,China)
出处
《世界科学技术-中医药现代化》
CSCD
北大核心
2023年第10期3413-3419,共7页
Modernization of Traditional Chinese Medicine and Materia Medica-World Science and Technology
基金
国家自然科学基金委员会青年科学基金项目(81704152):电针干预RA大鼠血管翳形成的HIF-1α/MDM2/p53信号通路调控机制,负责人:朱俊
国家自然科学基金委员会面上项目(81973959):艾灸“扶正祛邪”治疗类风湿关节炎“正邪相争”的巨噬细胞M1/M2极化免疫机制研究,负责人:周海燕
作者简介
通讯作者:朱俊,副教授,主要研究方向:电针治疗类风湿关节炎的免疫分子机制研究。
