Cellular and molecular mechanisms underlying age-related skeletal muscle wasting and weakness.

Abstract:

:Some of the most serious consequences of ageing are its effects on skeletal muscle. The term 'sarcopenia' describes the slow but progressive loss of muscle mass with advancing age and is characterised by a deterioration of muscle quantity and quality leading to a gradual slowing of movement and a decline in strength. The loss of muscle mass and strength is thought to be attributed to the progressive atrophy and loss of individual muscle fibres associated with the loss of motor units, and a concomitant reduction in muscle 'quality' due to the infiltration of fat and other non-contractile material. These age-related changes in skeletal muscle can be largely attributed to the complex interaction of factors affecting neuromuscular transmission, muscle architecture, fibre composition, excitation-contraction coupling, and metabolism. Given the magnitude of the growing public health problems associated with sarcopenia, there is considerable interest in the development and evaluation of therapeutic strategies to attenuate, prevent, or ultimately reverse age-related muscle wasting and weakness. The aim is to review our current understanding of some of the cellular and molecular mechanisms responsible for age-related changes in skeletal muscle.

journal_name

Biogerontology

journal_title

Biogerontology

authors

Ryall JG,Schertzer JD,Lynch GS

doi

10.1007/s10522-008-9131-0

subject

Has Abstract

pub_date

2008-08-01 00:00:00

pages

213-28

issue

4

eissn

1389-5729

issn

1573-6768

journal_volume

9

pub_type

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