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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 31 - 37 (7page)
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초록· 키워드
오류제보하기
Skeletal muscle possesses plasticity and adaptability to external and internal physiological changes. Due to these characteristics, skeletal muscle shows dramatic changes depending on its response to stimuli such as physical activity, nutritional changes, disease status, and environmental changes. Modulation of the rate of protein synthesis/degradation plays an important role in atrophic responses. The purpose of this review is to describe different features of skeletal muscle adaptation with various models of deceased use. In this review, four models were addressed: immobilization, spinal cord transection, hindlimb unloading, and aging. Immobilization is a form of decreased use in which skeletal muscle shows electrical activity, tension development, and motion. These results differ by muscle group. Spinal cord transection was selected to simulate spinal cord injury. Similar to the immobilization model, dramatic atrophy occurs in addition to fiber type conversion in this model. Despite the fact that electromyography shows unremarkable changes in muscle after hindlimb unloading, decreased muscle mass and contractile force are observed. Lastly, aging significantly decreases the numbers of muscle fibers and motor units. Skeletal muscle responses to decreased use include decreased strength, decreased fiber numbers, and fiber type transformation. These four models demonstrated different changes in the skeletal muscle. This review elucidates the different skeletal muscle adaptations in these four decreased use animal models and encourages further studies.
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참고문헌 (59)
참고문헌 신청
Ikemoto M / 2001 / Space shuttle flight(STS-90)enhances degradation of rat myosin heavy chain in association with activation of ubiquitin-proteasome pathway / FASEB J 15:1279~1281
Janssen I / 2000 / Skeletal muscle mass and distribution in 468 men and women aged 18-88 yr / J Appl Physiol (1985) 89:81~88
Phillips SM / 2009 / Alterations of protein turnover underlying disuse atrophy in human skeletal muscle / J Appl Physiol (1985) 107:645~654
Jiang B / 1990 / Expression of a fast fiber enzyme profile in the cat soleus after spinalization / Muscle Nerve 13:1037~1049
Nilwik R / 2013 / The decline in skeletal muscle mass with aging is mainly attributed to a reduction in type II muscle fiber size / Exp Gerontol 48:492~498
Janssen I / 2000 / Skeletal muscle mass and distribution in 468 men and women aged 18-88 yr / J Appl Physiol (1985) 89:81~88
Phillips SM / 2009 / Alterations of protein turnover underlying disuse atrophy in human skeletal muscle / J Appl Physiol (1985) 107:645~654
Jiang B / 1990 / Expression of a fast fiber enzyme profile in the cat soleus after spinalization / Muscle Nerve 13:1037~1049
Nilwik R / 2013 / The decline in skeletal muscle mass with aging is mainly attributed to a reduction in type II muscle fiber size / Exp Gerontol 48:492~498
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