中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (14): 2202-2208.doi: 10.12307/2024.300

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

银质针导热治疗肌筋膜疼痛综合征大鼠骨骼肌线粒体和SIRT3表达的变化

王  玥1,张玉函1,王家益1,黄媛馨2,沃春新2,王彩霞1,周沛然3,王  林2   

  1. 1贵州医科大学,贵州省贵阳市  550004;贵州医科大学附属医院,2疼痛科,3电生理中心,贵州省贵阳市  550004
  • 收稿日期:2023-02-24 接受日期:2023-04-12 出版日期:2024-05-18 发布日期:2023-07-28
  • 通讯作者: 王林,硕士,教授,主任医师,博士生导师,硕士生导师,贵州医科大学附属医院疼痛科,贵州省贵阳市 550004
  • 作者简介:王玥,女,1995年生,贵州省遵义市人,汉族,贵州医科大学在读硕士,主要从事慢性疼痛与治疗研究。 张玉函,女,2000年生,贵州省六盘水市人,汉族,贵州医科大学在读本科生。
  • 基金资助:
    国家自然科学基金项目(82060811),项目负责人:王林;贵州省科技计划项目(黔科合基础-ZK[2021]),项目负责人:黄媛馨;2022年国家级大学生创新创业训练计划项目(202210660129),项目负责人:张玉函

Effects of silver needle-thermal conduction therapy on skeletal muscle mitochondria and silent information regulator homolog 3 expression in a rat model of myofascial pain syndrome

Wang Yue1, Zhang Yuhan1, Wang Jiayi1, Huang Yuanxin2, Wo Chunxin2, Wang Caixia1, Zhou Peiran3, Wang Lin2   

  1. 1Guizhou Medical University, Guiyang 550004, Guizhou Province, China; 2Department of Pain, 3Neuroelectrophysiology Center, Union Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Received:2023-02-24 Accepted:2023-04-12 Online:2024-05-18 Published:2023-07-28
  • Contact: Wang Lin, Master, Professor, Chief physician, Doctoral/Master’s supervisor, Department of Pain, Union Hospital of Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • About author:Wang Yue, Master candidate, Guizhou Medical University, Guiyang 550004, Guizhou Province, China Zhang Yuhan, Guizhou Medical University, Guiyang 550004, Guizhou Province, China
  • Supported by:
    National Natural Science Foundation of China, No. 82060811 (to WL); Guizhou Provincial Science and Technology Program, No. ZK[2021] (to HYX); 2022 National Student Innovation and Entrepreneurship Training Program Project, No. 202210660129 (to ZYH)

摘要:


文题释义:

沉默信息调节因子同源蛋白3(Silent information regulator homolog3,SIRT3):是端粒保护蛋白,Sirtuins家族中的重要成员,SIRT3在整个线粒体Sirtuins中具有最高的脱乙酰酶活性,特异性的定位于线粒体基质中,参与线粒体能量代谢及蛋白乙酰化的调节,与线粒体新陈代谢、细胞免疫和炎症调节、细胞存活和凋亡以及昼夜节律调控等重要生物学特性密切相关,通过对活性氧簇的抑制、超氧化物歧化酶和过氧化氢酶的活化来保护线粒体,防止DNA受损和氧化性应激而导致的细胞死亡。在代谢能力强、高耗氧量和高线粒体细胞内表达增高;对缓解慢性疼痛有一定作用。
Sirtuins:Sirtuins家族包含7个成员(SIRT1-SIRT7),是第Ⅲ类NAD+依赖性脱乙酰化酶,控制着哺乳动物的多种细胞功能和机体特性,包括线粒体代谢、细胞减数分裂、炎症、自噬、凋亡等。可被NAD+、NADH、烟酰胺等细胞中的代谢辅因子或中间产物活化或抑制,并通过对包括组蛋白或转录因子在内的底物蛋白翻译后修饰,调节一系列细胞功能,参与细胞代谢以及在应激下细胞存活与死亡的平衡调节,有研究发现其抗炎作用可能有助于延长寿命。


背景:临床研究发现银质针导热治疗对肌筋膜疼痛综合征患者具有良好镇痛作用,但其具体机制仍不清楚。

目的:观察银质针导热治疗对肌筋膜疼痛综合征大鼠线粒体超微结构和沉默信息调节因子同源蛋白3变化的影响。
方法:26只大鼠随机取20只予以打击结合运动疲劳的方法复制肌筋膜疼痛综合征大鼠模型,造模成功的16只大鼠随机分为模型组和银质针导热组,每组各8只;银质针导热组给予银质针导热处理;剩余6只为正常对照。分别于造模前1 d、造模完成后第1天、银质针导热处理后第14天检测大鼠机械刺激缩足阈值、热缩足潜伏期;银质针导热处理后第14天检测大鼠股内侧肌肌电图电活动,取大鼠右侧股内侧肌分别进行苏木精-伊红染色观察局部形态、透射电镜观察线粒体超微结构、Western blot检测沉默信息调节因子同源蛋白3表达。

结果与结论:①痛阈值:与正常组和造模前相比,模型组、银质针导热组造模后机械刺激缩足阈值和热缩足潜伏期显著缩短(P < 0.01);经银质针导热处理后,与模型组相比,银质针导热组机械刺激缩足阈值和热缩足潜伏期显著延长(P < 0.01);②肌电图:模型组大鼠右侧股内侧出现自发电活动,银质针导热组自发电活动较模型组减少,时限较模型组延长(P < 0.01),波幅较模型组降低(P < 0.05);③苏木精-伊红染色:正常组大鼠肌纤维排列紧密规则,模型组大鼠肌纤维萎缩、变性,排列紊乱,银质针导热组大鼠肌肉结构紊乱改善;④骨骼肌线粒体微观结构:透射电镜显示正常组肌组织线粒体结构正常;模型组肌组织线粒体肿胀,嵴断裂或消失;银质针导热组肌组织线粒体肿胀明显缓解或趋于正常;⑤沉默信息调节因子同源蛋白3表达:模型组较正常组明显下调,银质针导热组较模型组明显上调(P < 0.05);⑥结果表明:肌筋膜疼痛综合征大鼠局部肌肉线粒体出现异常,沉默信息调节因子同源蛋白3的表达下调,提示存在能量代谢障碍;银质针导热处理后线粒体变化恢复,接近正常,且沉默信息调节因子同源蛋白3的表达上调接近正常组,推测银质针导热疗法可能通过促进线粒体修复而改善能量代谢障碍发挥治疗作用。

https://orcid.org/0000-0003-0017-605X(王玥);https://orcid.org/0009-0001-6441-7644(张玉函)

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松;组织工程

关键词: 肌筋膜疼痛综合征, 银质针导热治疗, 肌肉线粒体, SIRT3, 肌筋膜激痛点

Abstract: BACKGROUND:  Clinical studies have found good analgesic effects of silver needle-thermal conduction therapy in patients with myofascial pain syndrome, but the exact mechanism remains unclear.
OBJECTIVE: To observe the effect of silver needle-thermal conduction therapy on silent information regulator homolog 3 (SIRT3) changes and mitochondrial ultrastructure in a rat model of myofascial pain syndrome.
METHODS: Twenty rats were randomly selected from 26 Sprague-Dawley rats and were subjected to percussion combined with motor fatigue for replicating the rat model of myofascial pain syndrome. Sixteen rats that were successfully modeled were randomly divided into model group and silver needle-thermal conduction therapy group (treatment group), with eight rats in each group. The remaining rats were used as controls (normal group). The treatment group was treated with silver needle-thermal conduction therapy. Mechanical withdrawal threshold and thermal withdrawal latency of rats were measured at 1 day before modeling, 1 day after modeling and 14 days after treatment. Electromyographic activities of the right medial femoral muscle were measured at 14 days after treatment. The right medial femoral muscle tissue was taken for hematoxylin-eosin staining to observe the local morphology and for transmission electron microscopy to observe the mitochondrial ultrastructure. Western blot assay was performed to detect SIRT3 expression.
RESULTS AND CONCLUSION: Pain threshold: The mechanical withdrawal threshold and thermal withdrawal latency of the model and treatment groups were significantly decreased compared with those in the normal group and before modeling (P < 0.01). After treatment, the mechanical withdrawal threshold and thermal withdrawal latency of rats were significantly higher in the treatment group compared with the model group (P < 0.01). Electromyography: The rats in the model group showed spontaneous electrical activity in the right medial femur, while the rats in the treatment group showed reduced spontaneous electrical activity, longer time frame (P < 0.01) and lower wave amplitude (P < 0.05) compared with the model group. Hematoxylin-eosin staining: In the normal group, rat muscle fibers arranged closely and regularly. In the model group, the muscle fibers of rats were atrophied, degenerated, and disordered in arrangement. In the treatment group, rat muscle structure disorder improved. Mitochondrial microstructure: Under the transmission electron microscope, mitochondrial structure in the normal group was normal; mitochondrial swelling with broken or disappeared cristae appeared in the model group; mitochondrial swelling in the treatment group was obviously relieved or tended to be normal. SIRT3 expression: SIRT3 expression was significantly downregulated in the model group compared with the normal group, but was significantly upregulated in the treatment group compared with the model group (P < 0.05). To conclude, abnormalities in local muscle mitochondria and downregulation of SIRT3 expression suggest the presence of impaired energy metabolism in the rat model of myofascial pain syndrome. Mitochondrial changes recover and are close to normal after the silver needle-thermal conduction therapy, and the expression of SIRT3 is also upregulated close to the normal group, indicating the silver needle-thermal conduction therapy may play a therapeutic role by promoting mitochondrial repair and improving energy metabolism disorder.

Key words: myofascial pain syndrome, silver needle-thermal conduction therapy, muscle mitochondria, SIRT3, myofascial trigger point

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