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中国应用生理学杂志 ›› 2022, Vol. 38 ›› Issue (1): 41-46.doi: 10.12047/j.cjap.6204.2022.008

• 研究论文 • 上一篇    下一篇

不同频率的振动训练对大鼠早期膝骨关节炎关节软骨的修复作用及其JNK/NF-κB、SOX9机制*

汪宗保1,2,3△, 王连3, 柳奇奇1, 杨永晖2, 刘攀2, 李斯亮1, 姚长风1   

  1. 1.安徽中医药大学康复医学院, 合肥 230038;
    2.安徽中医药大学第三附属医院, 合肥 230031;
    3.上海体育学院运动科学学院, 上海 200438
  • 收稿日期:2021-04-08 修回日期:2022-01-06 出版日期:2022-01-28 发布日期:2022-05-30
  • 通讯作者: Tel: 0551-62736630; E-mail: 673099692@qq.com
  • 基金资助:
    * 安徽省自然科学基金项目(1508085MH181);安徽省卫生健康委科研项目(AHWJ2021b052)

Repair impact of vibration exercise with different frequencies on articular cartilage of rats with early knee osteoarthritis and its JNK/NF-κB, SOX9 mechanisms

WANG Zong-bao 1,2,3△, WANG Lian3, LIU Qi-qi1, YANG Yong-hui2, LIU Pan2, LI Si-liang1, YAO Chang-feng1   

  1. 1. School ofRehabilitation Medicine,Anhui University of Chinese Medicine,Hefei 230038;
    2. The Third Affiliated Hospital of Anhui University of Chinese Medicine, Hefei 230031;
    3. School of Sports Science, Shanghai University of Sport, Shanghai 200438, China
  • Received:2021-04-08 Revised:2022-01-06 Online:2022-01-28 Published:2022-05-30

摘要: 目的: 探讨不同频率的振动训练对大鼠早期膝骨关节炎关节软骨的修复作用及其JNK/NF-κB、SOX9的机制。方法: 成年雄性SD大鼠48只,随机分为6组(n=8):模型对照组(MC组),高频振动1组(GP1组,频率60 Hz),高频振动2组(GP2组,频率40 Hz)、中频振动组(ZP组,频率20 Hz)和低频振动组(DP组,频率10 Hz),正常对照组(NC组)。除正常组外,各组大鼠经第1、4、7日双后腿膝关节腔注射2%木瓜蛋白酶溶液和L-半胱氨酸混合液6周后建立早期膝骨关节炎模型后,对振动组大鼠双膝进行4周,每天 40 min,振幅2~5 mm,每周振动5 d的训练。4周后,检测双膝关节股骨外侧髁关节软骨HE染色、番红O染色和Mankin评分形态学观察,股骨内侧髁关节软骨RT-qPCR检测JNK、NF-κB p65、SOX9 mRNA,Western blot 检测JNK、NF-κB p65、SOX9蛋白表达。结果: 与NC比较,其余各组Mankin评分均显著增高(P<0.01),与MC相比,各振动组Mankin评分均显著降低(P<0.05),其JNK、NF-κB p65mRNA和蛋白质表达显著降低(P<0.01),SOX9mRNA和蛋白质表达显著升高(P<0.01);与高频组相比,低频组的Mankin评分,JNK、NF-κB p65mRNA和蛋白质表达均显著降低(P<0.05,P<0.01),而SOX9mRNA和蛋白质表达则显著升高(P<0.05,P<0.01)。结论: 不同频率的振动训练对早期膝骨关节炎关节软骨可表现出不同程度的修复效应,低频振动训练软骨修复优于高频振动。可能通过下调关节软骨JNK/NF-κB表达,提高SOX9活性来调控胶原合成。

关键词: 膝骨性关节炎, 振动训练, C-Jun 氨基端激酶, 核因子-κB, 性别决定区Y框蛋白9 , 大鼠

Abstract: Objective: To investigate the repair effect and JNK/NF-κB,SOX9 mechanisms of vibration exercise with different frequencies on articular cartilage in rats with early knee osteoarthritis. Methods: Forty-eight adult male SD rats were randomly divided into six groups(n=8):model control group(MC),high frequency vibration group 1 (GP1,60 Hz),high frequency vibration 2 group (GP2,40 Hz),medium frequency vibration group (ZP,20 Hz),minor frequency group(DP,10 Hz)and normal control group(NC). Except for NC group,the rats in each group were made into early knee osteoarthritis model after six weeks of knee joint cavity injection of papain solution and 2% mixture l-cysteine on the 1st,4 th and 7th day. Each exercise group was subjected vibration to 40 minutes a day with amplitude of 2~5 mm and 5 days a week. Four weeks later, the articular cartilage of the lateral femoral condyle of the both back leg knee joints were detected by HE staining,serine O staining and Mankin scores for morphological observation. The expression levels of JNK,NF-κB p65 and Sox9 mRNA in articular cartilage of the medial femoral condyle were detected by RT-qPCR,and the protein expressions of JNK,NF-κB p65 and Sox9 were detected by Western blot. Results: Compared with the NC group,the Mankin score in other groups was significantly higher (P<0.01). Compared with the MC group,the Mankin score of each vibration group was significantly lower(P<0.05),the mRNA and protein expressions of JNK and NF-κB p65 in each vibration training group were significantly lower (P<0.01),the expressions of Sox9 mRNA and protein in vibration training group were increased significantly (P<0.01). Compared with the higher frequency group,the Mankin score,the mRNA and protein expressions of JNK and NF-κB p65 of lower frequency group were significantly lower (P<0.05 or P<0.01). But the expressions of Sox9 mRNA and protein were significantly higher (P< 0.05 or P<0.01). Conclusion: Vibration exercise of different frequencies may present varying degrees of cartilage repair impact in rats with early knee osteoarthritis,and the cartilage repair by low-frequency vibration training is better than that by high-frequency vibration. This can be one of the mechanisms on controlling collagen synthesis by down-regulating JNK/NF-κB expression and increasing SOX9 activity of OA articular cartilage.

Key words: knee osteoarthritis, vibration exercise, c-Jun N-termianl kinase, nuclear factor kappa B, sex determining region Y-box 9, rats

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