Thrifty Hormone Ghrelin: The Secret of Aging Muscularly
Thrifty Hormone Ghrelin: The Secret of Aging Muscularly
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节俭激素胃饥饿素:肌肉衰老的秘密
DOI:
10.35248/2329-8847.20.s3.005
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发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Yuxiang Sun
中科院分区:
文献类型:
--
作者:
Yuxiang Sun
Sarcopenia is a debilitating muscle-wasting disease that is the major cause of frailty and disability in aging. Ghrelin (aka acylated ghrelin, AG) is a circulating peptide hormone with an unique octanoylation on Ser3. AG induces growth hormone (GH) secretion, increases food intake, and promotes adiposity and insulin resistance via its receptor, Growth Hormone Secretagogue Receptor (GHS-R). Unlike AG, unacylated ghrelin (UAG) is a peptide generated from the same ghrelin gene with amino acid sequence identical to AG but without the octanoylation modification, so UAG does not activate GHS-R. Intriguingly, both AG and UAG have been shown to promote differentiation and fusion of muscle C2C12 cells, regulate metabolic and mitochondrial signaling pathways in myotubes, and attenuate fasting- or denervation-induced muscle atrophy. Furthermore, it has also been shown that ghrelin gene deficiency increases vulnerability to fasting-induced muscle loss in aging mice, and AG and UAG effectively protects against muscle atrophy of aging mice. Because UAG doesn’t bind to GHS-R, it doesn’t have the undesired side-effects of elevated GH-release and increased obesity as AG. In summary, UAG has an impressive anti-atrophic effect in muscle protecting against muscle atrophy in aging, it has potential to be a unique and superior therapeutic candidate for muscle-wasting diseases such as sarcopenia.
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DOI:
10.1152/ajpendo.2000.279.3.e622
发表时间:
2000-09
期刊:
American journal of physiology. Endocrinology and metabolism
影响因子:
--
作者:
Mina I. Zhou;B. Lin;S. Coughlin;G. Vallega;P. Pilch
通讯作者:
Mina I. Zhou;B. Lin;S. Coughlin;G. Vallega;P. Pilch
DOI:
10.1073/pnas.0305930101
发表时间:
2004-03-30
影响因子:
11.1
作者:
Sun, YX;Wang, P;Smith, RG
通讯作者:
Smith, RG
影响因子:
29
作者:
Sun, Yuxiang;Asnicar, Mark;Smith, Roy G.
通讯作者:
Smith, Roy G.
影响因子:
7.1
作者:
Lanza, Ian R.;Nair, K. Sreekumaran
通讯作者:
Nair, K. Sreekumaran
影响因子:
3.9
作者:
Reynolds4th,ThomasH;Reid,Pamela;Larkin,LisaM;Dengel,DonaldR
通讯作者:
Dengel,DonaldR