Skeletal muscle: increasing the size of the locomotor cell.

[Mike Bikov]

Int J Biochem Cell Biol. 2010 Sep;42(9):1376-9. Epub 2010 Jun 9.
Skeletal muscle: increasing the size of the locomotor cell.

Karagounis LG, Hawley JA.

Health Innovations Research Institute, School of Medical Sciences, RMIT University, Bundoora 3083, Australia. [email protected]
Abstract

Skeletal muscle is the most abundant tissue in the body comprising 40-50% of body mass in humans and playing a central role in maintaining metabolic health. Skeletal muscle protein undergoes rapid turnover, a process that is intricately regulated by the balance between the rates of protein synthesis and degradation. The process of skeletal muscle hypertrophy and regeneration is an important adaptive response to both contractile activity (i.e., exercise) and nutrient availability (i.e., protein ingestion). Ageing and physical inactivity are two conditions associated with a loss of skeletal muscle protein (sarcopenia). Sarcopenia is characterised by a deterioration of muscle quantity and quality, although the precise mechanism(s) underlying this condition remain to be elucidated. This review will (1) summarise our current understanding of the origin and plasticity of skeletal muscle, (2) discuss the major effectors of muscle growth, and (3) highlight the importance of skeletal muscle health in the prevention of several common pathologies.
Copyright (c) 2010 Elsevier Ltd. All rights reserved.

PMID: 20541033​

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