PMID- 36309386 OWN - NLM STAT- MEDLINE DCOM- 20221101 LR - 20221221 IS - 1791-7549 (Electronic) IS - 0258-851X (Print) IS - 0258-851X (Linking) VI - 36 IP - 6 DP - 2022 Nov-Dec TI - Study of Therapeutic Effects of Losartan for Sarcopenia Based on the F344xBN Rat Aging Model. PG - 2740-2750 LID - 10.21873/invivo.13010 [doi] AB - BACKGROUND/AIM: Sarcopenia is an age-related disease in which muscle mass and strength are markedly reduced. There are few effective treatments, but the angiotensin II receptor antagonist losartan has been reported to be effective. Our aim was to evaluate the therapeutic effectiveness of losartan for sarcopenia and explore the underlying mechanisms. MATERIALS AND METHODS: We investigated body weight, muscle mass (gastrocnemius, soleus, peroneus longus, and tibialis anterior muscles), and serum markers in an aged rat model population divided into four treatment groups: Control, exercise, losartan, and exercise plus losartan. The rats were sacrificed at 6, 12, or 18 months after the start of the experiment and autopsies were performed. RESULTS: Compared with the control group, average muscle mass and weight increased in the two groups treated with losartan. AKT serine/threonine kinase (AKT) and extracellular signal-regulated kinase (ERK) muscle growth factors increased in the peroneus longus. mechanistic target of rapamycin kinase (mTOR) increased in tibialis anterior, peroneus longus, and soleus. CONCLUSION: Losartan treatment slowed muscle degeneration and activated the PI3K-AKT-mTOR and ERK/mitogen-activated protein kinase signalling pathways required for production of muscle growth factors when combined with exercise. CI - Copyright (c) 2022, International Institute of Anticancer Research (Dr. George J. Delinasios), All rights reserved. FAU - Kang, Donghun AU - Kang D AD - Department of life Science, College of BioNano Technology, Gachon University, Gyeonggi-do, Republic of Korea. FAU - Park, Kideok AU - Park K AD - Department of Rehabilitation Medicine, Gachon University, Gil Medical Center Incheon, Incheon, Republic of Korea. FAU - Kim, Daeyoung AU - Kim D AD - Department of life Science, College of BioNano Technology, Gachon University, Gyeonggi-do, Republic of Korea davekim@gachon.ac.kr. LA - eng PT - Journal Article PL - Greece TA - In Vivo JT - In vivo (Athens, Greece) JID - 8806809 RN - JMS50MPO89 (Losartan) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 2.7.1.- (Phosphatidylinositol 3-Kinases) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Rats MH - Animals MH - *Sarcopenia/drug therapy MH - Losartan/pharmacology/metabolism/therapeutic use MH - Proto-Oncogene Proteins c-akt/metabolism MH - Phosphatidylinositol 3-Kinases/metabolism MH - Muscle, Skeletal/pathology MH - Aging MH - Extracellular Signal-Regulated MAP Kinases/metabolism MH - *Muscular Diseases MH - TOR Serine-Threonine Kinases/metabolism PMC - PMC9677788 OTO - NOTNLM OT - PI3K/AKT/mTOR signalling pathway OT - Sarcopenia OT - aging OT - angiotensin II receptor blockade OT - exercise OT - skeletal muscle COIS- There are no conflicts to declare. EDAT- 2022/10/30 06:00 MHDA- 2022/11/02 06:00 PMCR- 2022/11/03 CRDT- 2022/10/29 20:42 PHST- 2022/08/18 00:00 [received] PHST- 2022/09/17 00:00 [revised] PHST- 2022/09/26 00:00 [accepted] PHST- 2022/10/29 20:42 [entrez] PHST- 2022/10/30 06:00 [pubmed] PHST- 2022/11/02 06:00 [medline] PHST- 2022/11/03 00:00 [pmc-release] AID - 36/6/2740 [pii] AID - 10.21873/invivo.13010 [doi] PST - ppublish SO - In Vivo. 2022 Nov-Dec;36(6):2740-2750. doi: 10.21873/invivo.13010.