PMID- 33226962 OWN - NLM STAT- MEDLINE DCOM- 20210427 LR - 20210427 IS - 1945-4589 (Electronic) IS - 1945-4589 (Linking) VI - 12 IP - 23 DP - 2020 Nov 21 TI - Caloric restriction: implications for sarcopenia and potential mechanisms. PG - 24441-24452 LID - 10.18632/aging.103987 [doi] AB - Sarcopenia is a potential risk factor for weakness, disability and death in elderly individuals. Therefore, seeking effective methods to delay and treat sarcopenia and to improve the quality of life of elderly individuals is a trending topic in geriatrics. Caloric restriction (CR) is currently recognized as an effective means to extend the lifespan and delay the decline in organ function caused by aging. In this review, we describe the effects of CR on improving muscle protein synthesis, delaying muscle atrophy, regulating muscle mitochondrial function, maintaining muscle strength, promoting muscle stem cell (MuSC) regeneration and differentiation, and thus protecting against sarcopenia. We also summarize the possible cellular mechanisms by which CR delays sarcopenia. CR can delay sarcopenia by reducing the generation of oxygen free radicals, reducing oxidative stress damage, enhancing mitochondrial function, improving protein homeostasis, reducing iron overload, increasing autophagy and apoptosis, and reducing inflammation. However, the relationships between CR and genetics, sex, animal strain, regimen duration and energy intake level are complex. Therefore, further study of the proper timing and application method of CR to prevent sarcopenia is highly important for the aging population. FAU - Xie, Wen-Qing AU - Xie WQ AD - Deparment of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. AD - National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. FAU - Xiao, Wen-Feng AU - Xiao WF AD - Deparment of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. AD - National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. FAU - Tang, Kun AU - Tang K AD - Discipline Construction Office, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. FAU - Wu, Yu-Xiang AU - Wu YX AD - School of Kinesiology, Jianghan University, Wuhan 430056, China. FAU - Hu, Pei-Wu AU - Hu PW AD - Department of Scientific Research, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. FAU - Li, Yu-Sheng AU - Li YS AD - Deparment of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. AD - National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China. FAU - Duan, Yu AU - Duan Y AD - Department of Geriatric Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China. FAU - Lv, Shan AU - Lv S AD - Department of Geriatric Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, Jiangsu, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20201121 PL - United States TA - Aging (Albany NY) JT - Aging JID - 101508617 RN - 0 (Reactive Oxygen Species) SB - IM MH - Age Factors MH - Aging/metabolism/pathology MH - Animals MH - Body Composition MH - *Caloric Restriction MH - Humans MH - Mitochondria, Muscle/*metabolism/pathology MH - Muscle Strength MH - Muscle, Skeletal/*metabolism/pathology/physiopathology MH - Oxidative Stress MH - Reactive Oxygen Species/metabolism MH - Risk Factors MH - Sarcopenia/diagnosis/*diet therapy/metabolism/physiopathology MH - Sex Factors MH - Treatment Outcome PMC - PMC7762489 OTO - NOTNLM OT - aging OT - calorie restriction OT - cellular mechanism OT - sarcopenia COIS- CONFLICTS OF INTEREST: The authors declare that they have no conflicts of interest. EDAT- 2020/11/24 06:00 MHDA- 2021/04/28 06:00 PMCR- 2020/12/15 CRDT- 2020/11/23 17:09 PHST- 2020/05/22 00:00 [received] PHST- 2020/08/14 00:00 [accepted] PHST- 2020/11/24 06:00 [pubmed] PHST- 2021/04/28 06:00 [medline] PHST- 2020/11/23 17:09 [entrez] PHST- 2020/12/15 00:00 [pmc-release] AID - 103987 [pii] AID - 10.18632/aging.103987 [doi] PST - ppublish SO - Aging (Albany NY). 2020 Nov 21;12(23):24441-24452. doi: 10.18632/aging.103987. Epub 2020 Nov 21.