Chinese Journal of Tissue Engineering Research ›› 2015, Vol. 19 ›› Issue (29): 4645-4651.doi: 10.3969/j.issn.2095-4344.2015.29.011

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Establishing an animal model of delayed onset muscle soreness and its histomorphologic observation

Wei Yuan1, Fang Chun-lu1, Li Liang-ming1, Xing Wen-hua2, Yang Ze-yi3   

  1. 1 Guangzhou Institute of Physical Education, Guangzhou 510500, Guangdong Province, China
    2 Beijing Sport University, Beijing 100084, China
    3 Research Institute of Sports Medicine, Beijing 100029, China
  • Online:2015-07-09 Published:2015-07-09
  • Contact: Wei Yuan, Guangzhou Institute of Physical Education, Guangzhou 510500, Guangdong Province, China
  • About author:Wei Yuan, Ph.D., Associate professor, Master’s supervisor, Guangzhou Institute of Physical Education, Guangzhou 510500, Guangdong Province, China
  • Supported by:

    the National Research Programs for Special Olympics Technology, No. 2002BA904B16; Ministry of Science and Research Institutes Special Fund Project, No. 2013EG145136; “Innovation and Strong School Project” in Guangzhou Institute of Physical Education

Abstract:

BACKGROUND: Delayed onset muscle soreness is closely related to skeletal muscle micro-injury, but the exact mechanism of skeletal muscle micro-injury is not yet clear.
OBJECTIVE: To observe the histomorphological and ultrastructure changes of skeletal muscle micro-injury models induced by eccentric exercise.
METHODS: Forty male Sprague-Dawley rats were randomly divided into quiet control group, immediately after exercise group, post-exercise 24 hours group, post-exercise 48 hours group and post-exercise 72 hours group. In the latter four groups, the rats were subjected to intermittent running on the -16° slope at a speed of 16 m/min: 5 minutes movement, 2 minutes rest and totally 120 minutes. Rats in the latter four groups were observed immediately, at 24, 48, 72 hours after exercise.
RESULTS AND CONCLUSION: After eccentric exercise, the morphology and ultrastructure of rat’s skeletal muscle were both changed to different extents, and Desmin and Vimentin were dyed off for anti-desmin antibody staining at varying degrees. It indicates that one-time eccentric exercise can cause delayed skeletal muscle micro-injury.

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, Muscle, Skeletal, Desmin, Vimentin

CLC Number: