中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (24): 3808-3813.doi: 10.3969/j.issn.2095-4344.2014.24.007

• 组织构建与生物活性因子 tissue construction and bioactive factors • 上一篇    下一篇

低功率激光修复末端病大鼠跟腱早期愈合中转化生长因子β1的表达

史晓伟1,龙丽娟1,沈勇伟2,王智鹏3   

  1. 1海南师范大学体育学院,海南省海口市  571158
    2苏州大学体育学院,江苏省苏州市  215021
    3核工业北京化工冶金研究院,北京市  101149
  • 修回日期:2014-03-15 出版日期:2014-06-11 发布日期:2014-06-11
  • 通讯作者: 沈勇伟,博士,副教授,苏州大学体育学院,江苏省苏州市215021
  • 作者简介:史晓伟,男,1984年生,陕西省宝鸡市人,实验师,硕士,主要从事运动生物化学研究。
  • 基金资助:

    江苏省社会发展项目(BS2006020):运动训练预防跟腱损伤的研究

Transforming growth factor-beta 1 expression in early enthesiopathy of Achilles tendon in rats after low-level laser therapy

Shi Xiao-wei1, Long Li-juan1, Shen Yong-wei2, Wang Zhi-peng3   

  1. 1School of Physical Education, Hainan Normal University, Haikou 571158, Hainan Province, China
    2School of Physical Education, Soochow University, Suzhou 215021, Jiangsu Province, China
    3Beijing Research Institute of Chemical Engineering and Metallurgy, CNNC, Beijing 101149, China
  • Revised:2014-03-15 Online:2014-06-11 Published:2014-06-11
  • Contact: Shen Yong-wei, M.D., Associate professor, School of Physical Education, Soochow University, Suzhou 215021, Jiangsu Province, China
  • About author:Shi Xiao-wei, Master, Experimentalist, School of Physical Education, Hainan Normal University, Haikou 571158, Hainan Province, China
  • Supported by:

    the Social Development Project of Jiangsu Province, No. BS2006020

摘要:

背景:低功率激光是一种治疗性激光,其在运动医学领域内应用价值潜力很大。
目的:观察低功率激光照射后,末端病大鼠跟腱转化生长因子β1表达的变化,探讨低功率激光修复末端病大鼠跟腱的机制。
方法:4周龄雄性Wistar大鼠96只,随机分为空白对照组(n=8)、造模组(n=88),造模组又分为造模对照组(n=48)和不同时间的激光照射组:激光照射1,2,3,7,14 d组(n=8)。造模组大鼠进行5周的电刺激跳跃之后,对激光照射组的大鼠跟腱按要求进行激光照射。用实时定量PCR方法测定跟腱内转化生长因子      β1 mRNA的表达;双抗体夹心ABC-ELISA法测试转化生长因子β1的蛋白含量。
结果与结论:造模即刻,与空白对照组比较,造模对照组大鼠跟腱转化生长因子β1明显升高(P < 0.05)。随着时间的推移,转化生长因子β1逐渐下降,与激光照射组比较,造模对照组大鼠跟腱转化生长因子β1在第7,14天时明显下降(P < 0.05)。低功率激光对末端病大鼠跟腱早期愈合有一定的促进作用:可延缓末端病大鼠跟腱转化生长因子β1的浓度下降,使转化生长因子β1在7-14 d内保持较高水平,对细胞外基质起着重要的调节作用。



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


全文链接:

关键词: 组织构建, 软骨组织工程, 低功率激光, 末端病, 跟腱, 转化生长因子β1, mRNA表达, 大鼠, 细胞外基质, 运动医学

Abstract:

BACKGROUND: Low-level laser is a kind of therapeutic laser and has great potential application value in the field of sports medicine.
OBJECTIVE: To discuss the repairing mechanism of low-level laser therapy in early enthesiopathy of achilles tendon in rats through observing the change of transforming growth factor-β1 expression after low-level laser therapy.
METHODS: A total of 96 male Wistar rats aged 4 weeks were randomly divided into control group (n=8) and model group (n=88). Then model group was assigned randomly into two subgroups: model control group (n=48) and laser groups (n=40). The laser group was further allocated to 1, 2, 3, 7, 14 days of laser radiation, with eight rats in each. The rats of model group were trained by electrical stimulation for 5 weeks, and the rats of laser groups received laser radiation. The expression of transforming growth factor-β1 mRNA level in Achilles tendon was analyzed by real-time quantitative PCR. The transforming growth factor-β1 content was tested by double antibody ABC-ELISA.
RESULTS AND CONCLUSION: The transforming growth factor-β1 in model control group was increased significantly compared with control group immediately after modeling (P < 0.05). Then, transforming growth factor-β1 was gradually decreasing as the time prolonged. Compared with laser groups, transforming growth factor-β1 in model control group was decreased significantly at 7 and 14 days (P < 0.05). Low-level laser therapy promotes the early healing of achilles tendon enthesiopathy in rats, delays the decrease of transforming growth factor-β1 content, and maintains high level of transforming growth factor-β1 at 7-14 days. Low-level laser therapy plays an important role in regulating extracellular matrix.



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


全文链接:

Key words: laser, Achilles tendon, tendinopathy, transforming growth factor beta, extracellular matrix

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