Modulation of GH/IGF-1 axis: Potential strategies to counteract sarcopenia in older adults

被引:103
作者
Giovannini, Silvia [1 ,2 ]
Marzetti, Emanuele [1 ,2 ]
Borst, Stephen E. [3 ]
Leeuwenburgh, Christiaan [1 ]
机构
[1] Univ Florida, Dept Aging & Geriatr Res, Inst Aging, Div Biol Aging Genom & Biomarkers Core, Gainesville, FL 32611 USA
[2] Univ Cattolica Sacro Cuore, Dept Gerontol Geriatr & Psychiat, I-00168 Rome, Italy
[3] GRECC, Malcolm Randall Vet Affairs Med Ctr, Gainesville, FL 32608 USA
关键词
Aging; Sarcopenia; GH/IGF-1; axis; Angiotensin; ACE-inhibitors;
D O I
10.1016/j.mad.2008.08.001
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
Aging is associated with progressive decline of skeletal muscle mass and function. This condition, termed sarcopenia, is associated with several adverse outcomes, including loss of autonomy and mortality. Due to the high prevalence of sarcopenia, a deeper understanding of its pathophysiology and possible remedies represents a high public health priority. Evidence suggests the existence of a relationship between declining growth hormone (GH) and insulin-like growth factor-1 (IGF-1) levels and age-related changes in body composition and physical function. Therefore, the age-dependent decline of GH and IGF-1 serum levels may promote frailty by contributing to the loss of muscle mass and strength. Preclinical studies showed that infusion of angiotensin II produced a marked reduction in body weight, accompanied by decreased serum and muscle levels of IGF-1. Conversely, overexpression of muscle-specific isoform of IGF-1 mitigates angiotensin II-induced muscle loss. Moreover, IGF-1 serum levels have been shown to increase following angiotensin converting enzyme inhibitors (ACEIs) treatment. Here we will review the most recent evidence regarding age-related changes of the GH/IGF-1 axis and its modulation by several interventions, including ACEIs which might represent a potential novel strategy to delay the onset and impede the progression of sarcopenia. (C) 2008 Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码:593 / 601
页数:9
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