中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (33): 4949-4956.doi: 10.3969/j.issn.2095-4344.2016.33.012

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

大负荷运动及针刺干预对骨骼肌微管蛋白的影响

刘晓然1,李俊平2,王蕴红1,王瑞元2   

  1. 1首都体育学院运动科学与健康学院,北京市  100191;2北京体育大学运动人体科学学院,北京市  100084
  • 收稿日期:2016-05-25 出版日期:2016-08-12 发布日期:2016-08-12
  • 通讯作者: 王瑞元,博士,教授,北京体育大学运动人体科学学院,北京市 100084
  • 作者简介:刘晓然,女,1982年生,天津市人,2013年北京体育大学毕业,博士,实验师,主要从事运动对骨骼肌机能影响的研究。
  • 基金资助:

    国家自然科学基金(31271277);北京市高等学校“青年英才计划”项目(YETP1700)和北京市教育委员会科技计划面上项目(KM201510029001)

Effects of heavy load exercise and acupuncture treatment on tubulin in rat skeletal muscle

Liu Xiao-ran1, Li Jun-ping2, Wang Yun-hong1, Wang Rui-yuan2   

  1. 1School of Kinesiology and Health, Capital University of Physical Education and Sports, Beijing 100191, China; 2School of Sports Human Science, Beijing Sport University, Beijing 100084, China
  • Received:2016-05-25 Online:2016-08-12 Published:2016-08-12
  • Contact: Wang Rui-yuan, M.D., Professor, School of Sports Human Science, Beijing Sport University, Beijing 100084, China
  • About author:Liu Xiao-ran, M.D., Technician, School of Kinesiology and Health, Capital University of Physical Education and Sports, Beijing 100191, China
  • Supported by:

    the National Natural Science Foundation of China, No. 31271277; the Program for the Youth Talents of Higher Education in Beijing, No. TETP1700; the General Program of Science and Technology Planning in Beijing, No. KM201510029001

摘要:

文章快速阅读:

文题释义:
微管蛋白:由tubulin组成微管的蛋白质称为微管蛋白。微管蛋白是球形分子,有两种类型:α微管蛋白(α-tubulin)和β微管蛋白(β-tubulin),这两种微管蛋白具有相似的三维结构,能够紧密地结合成二聚体,作为微管组装的亚基。α亚基由450个氨基酸组成,β亚基是由455个氨基酸组成,它们的相对分子质量约55 000。
运动负荷:又称生理负荷,是指人做练习时所承受的生理负荷。运动负荷包括运动量和运动强度两个方面。大负荷运动尤其是离心运动,可诱导细胞骨架蛋白解聚或降解,致使肌纤维超微结构改变,收缩蛋白结构破坏,影响肌肉的收缩活动。
摘要
背景:
大负荷运动可诱导骨骼肌骨架蛋白的解聚或降解,改变骨骼肌的超微结构,影响骨骼肌的收缩活动。
目的:观察大负荷运动和针刺对骨骼肌微管的影响,并探讨运动和针刺在骨骼肌损伤和修复中的作用及其机制。
方法:选用8周龄SD雄性大鼠138只,分为一次性运动组114只和长期训练训练组24只。一次性运动组又分为4个亚组:安静对照组6只、运动组36只、针刺组36只和运动针刺组36只。一次性运动实验是大鼠完成一次中大强度下坡跑运动,在运动后施以针刺,根据运动和/或针刺后0,6,12,24,48和72 h点取材。长期训练实验是大鼠完成为期3周的下坡跑训练,并在每次运动后施以针刺,最后一次训练后的24 h取材。方法检测各组比目鱼肌α-tubulin和微管结合蛋白4的蛋白表达。
结果与结论:①一次运动后:α-tubulin蛋白表达一过性表达下调,微管结合蛋白4蛋白表达一过性表达上调;②一次运动后针刺:减小了α-tubulin和微管结合蛋白4蛋白表达的变化量;③3周训练后:α-tubulin蛋白表达有升高趋势,微管结合蛋白4蛋白表达显著下调,针刺的干预显著减小了微管结合蛋白4蛋白表达的变化量;④结果显示:大负荷运动可诱导骨骼肌微管解聚,而针刺干预可缓解微管的损伤。

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

ORCID: 0000-0003-1560-1194(刘晓然)

关键词: 组织构建, 组织工程, 大负荷, 运动, 针刺, 骨骼肌, 细胞骨架, 微管, tubulin, MAP4, 国家自然科学基金

Abstract:

BACKGROUND: Heavy load exercises can induce the ultrastructural changes in the skeletal muscle by the depolymerization and/or degradation of tubulin in the skeletal muscle, thereby lessening contraction activities of the skeletal muscle.
OBJECTIVE: To observe the effects of heavy load exercise and acupuncture on tubulin levels, and to analyze their roles and mechanisms in skeletal muscle injury and repair.
METHODS: 138 male Sprague-Dawley rats aged 8 weeks were randomly divided into acute exercise group (n=114) and long-term exercise group (n=24). The acute exercise group included four subgroups: sedentary group (n=6), exercise group (n=36), acupunctured group (n=36) and exercise plus acupuncture group (n=36). In the acute exercise experiment, rats were acupunctured after a medium-large intensity downhill running. Rat’s soleus samples were taken immediately, 6, 12, 24, 48 and 72 hours after exercise and/or acupuncture. In the long-term exercise experiment, rats underwent exercise and acupuncture for 3 weeks, and rat’s soleus samples were collected at 24 hours after the last training. Expressions of α-tubulin and microtubule-associated protein 4 (MAP4) in the soleus were detected by western blot assay.
RESULTS AND CONCLUSION: After acute exercise, expression of α-tubulin and MAP4 was up- or down-regulated transiently. After acute exercise combined with acupuncture, the protein expressions of α-tubulin and MAP4 changed slightly. However, the long-term exercise induced an increase in α-tubulin protein expression, while a significant decrease in MAP4 protein expression. It was worth noting that acupuncture treatment reduced long-term exercise-induced variations of MAP4 expression. These results suggest that the heavy load exercise can induce the depolymerization of tubulins in the skeletal muscle, and acupuncture may relieve this effect.

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

Key words: Sports Medicine, Cytoskeleton, Tubulin, Acupuncture

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