PMID- 38341069 OWN - NLM STAT- MEDLINE DCOM- 20240226 LR - 20240226 IS - 1096-0384 (Electronic) IS - 0003-9861 (Linking) VI - 753 DP - 2024 Mar TI - Cinnamaldehyde attenuates TNF-alpha induced skeletal muscle loss in C2C12 myotubes via regulation of protein synthesis, proteolysis, oxidative stress and inflammation. PG - 109922 LID - S0003-9861(24)00041-9 [pii] LID - 10.1016/j.abb.2024.109922 [doi] AB - Inflammation is the primary driver of skeletal muscle wasting, with oxidative stress serving as both a major consequence and a contributor to its deleterious effects. In this regard, regulation of both can efficiently prevent atrophy and thus will increase the rate of survival [1]. With this idea, we hypothesize that preincubation of Cinnamaldehyde (CNA), a known compound with anti-oxidative and anti-inflammatory properties, may be able to prevent skeletal muscle loss. To examine the same, C2C12 post-differentiated myotubes were treated with 25 ng/ml Tumor necrosis factor-alpha (TNF-alpha) in the presence or absence of 50 muM CNA. The data showed that TNF-alpha mediated myotube thinning and a lower fusion index were prevented by CNA supplementation 4 h before TNF-alpha treatment. Moreover, a lower level of ROS and thus maintained antioxidant defense system further underlines the antioxidative function of CNA in atrophic conditions. CNA preincubation also inhibited an increase in the level of inflammatory cytokines and thus led to a lower level of inflammation even in the presence of TNF-alpha. With decreased oxidative stress and inflammation by CNA, it was able to maintain the intracellular level of injury markers (CK, LDH) and SDH activity of mitochondria. In addition, CNA modulates all five proteolytic systems [cathepsin-L, UPS (atrogin-1), calpain, LC3, beclin] simultaneously with an upregulation of Akt/mTOR pathway, in turn, preserves the muscle-specific proteins (MHCf) from degradation by TNF-alpha. Altogether, our study exhibits attenuation of muscle loss and provides insight into the possible mechanism of action of CNA in curbing TNF-alpha induced muscle loss, specifically its effect on proteolysis and protein synthesis. CI - Copyright (c) 2024 Elsevier Inc. All rights reserved. FAU - Kaur, Nirmaljeet AU - Kaur N AD - Skeletal Muscle Lab, Institute of Integrated & Honors Studies, Kurukshetra University, Kurukshetra, Haryana, India. FAU - Gupta, Prachi AU - Gupta P AD - Skeletal Muscle Lab, Institute of Integrated & Honors Studies, Kurukshetra University, Kurukshetra, Haryana, India. FAU - Dutt, Vikas AU - Dutt V AD - Skeletal Muscle Lab, Institute of Integrated & Honors Studies, Kurukshetra University, Kurukshetra, Haryana, India. FAU - Sharma, Onkar AU - Sharma O AD - Skeletal Muscle Lab, Institute of Integrated & Honors Studies, Kurukshetra University, Kurukshetra, Haryana, India. FAU - Gupta, Sanjeev AU - Gupta S AD - Skeletal Muscle Lab, Institute of Integrated & Honors Studies, Kurukshetra University, Kurukshetra, Haryana, India. FAU - Dua, Anita AU - Dua A AD - Skeletal Muscle Lab, Institute of Integrated & Honors Studies, Kurukshetra University, Kurukshetra, Haryana, India. FAU - Injeti, Elisha AU - Injeti E AD - Department of Pharmaceutical Sciences, Cedarville University, School of Pharmacy, Cedarville, OH, USA. FAU - Mittal, Ashwani AU - Mittal A AD - Skeletal Muscle Lab, Institute of Integrated & Honors Studies, Kurukshetra University, Kurukshetra, Haryana, India. Electronic address: mittala@kuk.ac.in. LA - eng PT - Journal Article DEP - 20240208 PL - United States TA - Arch Biochem Biophys JT - Archives of biochemistry and biophysics JID - 0372430 RN - 0 (Tumor Necrosis Factor-alpha) RN - SR60A3XG0F (cinnamaldehyde) RN - 0 (Antioxidants) RN - 7864XYD3JJ (Acrolein) SB - IM MH - Humans MH - *Tumor Necrosis Factor-alpha/metabolism MH - Proteolysis MH - *Muscle, Skeletal/metabolism MH - Muscle Fibers, Skeletal/metabolism MH - Muscular Atrophy/chemically induced/drug therapy/metabolism MH - Oxidative Stress MH - Antioxidants/pharmacology/metabolism MH - Inflammation/metabolism MH - Acrolein/*analogs & derivatives OTO - NOTNLM OT - CNA OT - Inflammation OT - Muscle loss OT - Oxidative stress OT - TNF-alpha COIS- Declaration of competing interest All authors (NK, PG, VD, OS, SG, AD, EI, and AM) declare that they have no conflicts of interest involving this work. EDAT- 2024/02/11 07:42 MHDA- 2024/02/26 06:43 CRDT- 2024/02/10 19:18 PHST- 2023/09/11 00:00 [received] PHST- 2024/01/10 00:00 [revised] PHST- 2024/01/31 00:00 [accepted] PHST- 2024/02/26 06:43 [medline] PHST- 2024/02/11 07:42 [pubmed] PHST- 2024/02/10 19:18 [entrez] AID - S0003-9861(24)00041-9 [pii] AID - 10.1016/j.abb.2024.109922 [doi] PST - ppublish SO - Arch Biochem Biophys. 2024 Mar;753:109922. doi: 10.1016/j.abb.2024.109922. Epub 2024 Feb 8.