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Scandinavian journal of medicine & science in sports v.28 no.8, 2018년, pp.1859 - 1865   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Remodeling of muscle fibers approaching the human myotendinous junction

Jakobsen, J. R. (Department of Sports Traumatology M51, Bispebjerg‐Frederiksberg Hospital, Copenhagen, Denmark ) ; Jakobsen, N. R. (Department of Sports Traumatology M51, Bispebjerg‐Frederiksberg Hospital, Copenhagen, Denmark ) ; Mackey, A. L. (Department of Biomedical Sciences, Faculty of Health and Medical Sciences, Center for Healthy Aging, University of Copenhagen, Copenhagen, Denmark ) ; Koch, M. (Medical Faculty, Institute for Dental Research and Oral Musculoskeletal Biology, and Center for Biochemistry, University of Cologne, Cologne, Germany ) ; Kjaer, M. (Department of Orthopaedic Surgery M, Institute of Sports Medicine, Bispebjerg‐Frederiksberg Hospital, Copenhagen, Denmark ) ; Krogsgaard, M. R. (Department of Sports Traumatology M51, Bispebjerg‐Frederiksberg Hospital, Copenhagen, Denmark ) ;
  • 초록  

    The myotendinous junction (MTJ) is at high risk of strain injuries, due to high amounts of energy that is transferred through this structure. The risk of strain injury is significantly reduced by heavy resistance training (HRT), indicating a remodeling capacity of MTJ. We investigated the degree of remodeling of muscle fibers near the human MTJ. In 8 individuals, samples were taken from the semitendinosus and gracilis MTJ and they were stained immunohistochemically for myonuclei (DAPI), fibroblasts (TCF7L2), and satellite cells (CD56). A high portion of the muscle fibers adjacent to the MTJ contained a centrally located myonucleus (47 ± 8%, mean ± SD) and half of the muscle fibers were CD56 positive. The number of satellite cells and fibroblasts were not higher than what has previously been reported from muscle bellies. The immunohistochemical findings suggest that the rate of remodeling of muscle fibers near the MTJ is very high. The finding that there was no increased number of satellite cells and fibroblasts could be explained as a dynamic phenomenon. The effect of HRT should be evaluated in a randomized setting.


  • 주제어

    connective tissue .   force transmission .   histology .   muscle stem cells.  

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