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An J, Su Z, Meng S. Effect of aerobic training versus resistance training for improving cardiorespiratory fitness and body composition in middle-aged to older adults: A systematic review and meta-analysis of randomized controlled trials. Arch Gerontol Geriatr 2024; 126:105530. [PMID: 38878596 DOI: 10.1016/j.archger.2024.105530] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/29/2024] [Accepted: 06/10/2024] [Indexed: 09/05/2024]
Abstract
This systematic review and meta-analysis aimed to examine the influence of aerobic training (AT) versus resistance training (RT) on cardiorespiratory fitness and body composition in middle-aged to older adults. Four electronic databases including PubMed, Scopus, Cochrane CENTRAL, and web of science, as well as reference lists of included randomized controlled trials (RCTs) were searched from inception to April 2024. Data were pooled by the inverse-variance method and reported as mean differences (MDs) with 95 % confidence intervals (CIs). Thirty-eight RCTs, with a pooled sample of 1682 participants, met our inclusion criteria. Meta-analysis revealed that AT significantly improved VO2max/peak (MD = 1.80, 95 % CI: 0.96 to 2.64, p < 0.0001) and 6-MWT (MD = 18.58, 95 % CI: 10.38 to 26.78, p < 0.00001), and significantly decreased body mass (MD = -1.23, 95 % CI: -1.98 to -0.47, p = 0.001) versus RT. However, changes in lean body mass favored RT over AT. Moreover, changes in VO2max/peak and 6-MWT following AT were significant among both healthy and unhealthy participants, or men and women, after medium-term (< 24 weeks) and long-term (≥ 24 weeks) interventions, and among participants aged ≤65 and >65. Our results propose that AT should be considered an efficient approach to improving cardiorespiratory fitness and overall body composition with aging, particularly in terms of VO2max and 6-MWT performance. However, for improvements in lean body mass, RT may be more beneficial. Therefore, a combination of AT and RT might be optimal for comprehensive fitness and body composition improvements with aging.
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Affiliation(s)
- Jianqun An
- College of Sports Science, Lingnan Normal University, Zhanjiang 524048, Guangdong, China
| | - Zhanguo Su
- Faculty of Physical Education, Huainan Normal University, Huainan 232038, Anhui, China.
| | - Shangjie Meng
- International College, Krirk University, Bangkok 10220, Thailand
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2
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MAEO SUMIAKI, BALSHAW THOMASG, MÄRZ BENJAMIN, ZHOU ZHAOXIA, HAUG BILL, MARTIN NEILRW, MAFFULLI NICOLA, FOLLAND JONATHANP. Long-Term Resistance Trained Human Muscles Have More Fibers, More Myofibrils, and Tighter Myofilament Packing Than Untrained. Med Sci Sports Exerc 2024; 56:1906-1915. [PMID: 38875487 PMCID: PMC11419278 DOI: 10.1249/mss.0000000000003495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2024]
Abstract
INTRODUCTION Increases in skeletal muscle size occur in response to prolonged exposure to resistance training that is typically ascribed to increased muscle fiber size. Whether muscle fiber number also changes remains controversial, and a paucity of data exists about myofibrillar structure. This cross-sectional study compared muscle fiber and myofibril characteristics in long-term resistance-trained (LRT) versus untrained (UNT) individuals. METHODS The maximal anatomical cross-sectional area (ACSAmax) of the biceps brachii muscle was measured by magnetic resonance imaging in 16 LRT (5.9 ± 3.5 yr' experience) and 13 UNT males. A muscle biopsy was taken from the biceps brachii to measure muscle fiber area, myofibril area, and myosin spacing. Muscle fiber number, and myofibril number in total and per fiber were estimated by dividing ACSAmax by muscle fiber area or myofibril area, and muscle fiber area by myofibril area, respectively. RESULTS Compared with UNT, LRT individuals had greater ACSAmax (+70%, P < 0.001), fiber area (+29%, P = 0.028), fiber number (+34%, P = 0.013), and myofibril number per fiber (+49%, P = 0.034) and in total (+105%, P < 0.001). LRT individuals also had smaller myosin spacing (-7%, P = 0.004; i.e., greater packing density) and a tendency toward smaller myofibril area (-16%, P = 0.074). ACSAmax was positively correlated with fiber area ( r = 0.526), fiber number ( r = 0.445), and myofibril number (in total r = 0.873 and per fiber r = 0.566), and negatively correlated with myofibril area ( r = -0.456) and myosin spacing ( r = -0.382) (all P < 0.05). CONCLUSIONS The larger muscles of LRT individuals exhibited more fibers in cross-section and larger muscle fibers, which contained substantially more total myofibrils and more packed myofilaments than UNT participants, suggesting plasticity of muscle ultrastructure.
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Affiliation(s)
- SUMIAKI MAEO
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, JAPAN
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, UNITED KINGDOM
| | - THOMAS G. BALSHAW
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, UNITED KINGDOM
- Versus Arthritis Centre for Sport, Exercise and Osteoarthritis Research, Loughborough University, Loughborough, UNITED KINGDOM
| | - BENJAMIN MÄRZ
- Loughborough Materials Characterization Centre, Department of Materials, Loughborough University, Loughborough, UNITED KINGDOM
- Shared Instrumentation Facility, Louisiana State University, Baton Rouge, LA
| | - ZHAOXIA ZHOU
- Loughborough Materials Characterization Centre, Department of Materials, Loughborough University, Loughborough, UNITED KINGDOM
| | - BILL HAUG
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, UNITED KINGDOM
| | - NEIL R. W. MARTIN
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, UNITED KINGDOM
| | - NICOLA MAFFULLI
- Department of Trauma and Orthopaedic Surgery, School Medicine, Surgery and Dentistry, University of Salerno, Salerno, ITALY
- School of Pharmacy and Bioengineering, Keele University School of Medicine, Stoke on Trent, UNITED KINGDOM
- Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UNITED KINGDOM
| | - JONATHAN P. FOLLAND
- School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, UNITED KINGDOM
- Versus Arthritis Centre for Sport, Exercise and Osteoarthritis Research, Loughborough University, Loughborough, UNITED KINGDOM
- National Institute for Health and Care Research (NIHR) Leicester Biomedical Research Centre, UNITED KINGDOM
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Rahman FA, Baechler BL, Quadrilatero J. Key considerations for investigating and interpreting autophagy in skeletal muscle. Autophagy 2024; 20:2121-2132. [PMID: 39007805 PMCID: PMC11423691 DOI: 10.1080/15548627.2024.2373676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 06/13/2024] [Accepted: 06/25/2024] [Indexed: 07/16/2024] Open
Abstract
Skeletal muscle plays a crucial role in generating force to facilitate movement. Skeletal muscle is a heterogenous tissue composed of diverse fibers with distinct contractile and metabolic profiles. The intricate classification of skeletal muscle fibers exists on a continuum ranging from type I (slow-twitch, oxidative) to type II (fast-twitch, glycolytic). The heterogenous distribution and characteristics of fibers within and between skeletal muscles profoundly influences cellular signaling; however, this has not been broadly discussed as it relates to macroautophagy/autophagy. The growing interest in skeletal muscle autophagy research underscores the necessity of comprehending the interplay between autophagic responses among skeletal muscles and fibers with different contractile properties, metabolic profiles, and other related signaling processes. We recommend approaching the interpretation of autophagy findings with careful consideration for two key reasons: 1) the distinct behaviors and responses of different skeletal muscles or fibers to various perturbations, and 2) the potential impact of alterations in skeletal muscle fiber type or metabolic profile on observed autophagic outcomes. This review provides an overview of the autophagic profile and response in skeletal muscles/fibers of different types and metabolic profiles. Further, this review discusses autophagic findings in various conditions and diseases that may differentially affect skeletal muscle. Finally, we provide key points of consideration to better enable researchers to fine-tune the design and interpretation of skeletal muscle autophagy experiments.Abbreviation: AKT1: AKT serine/threonine kinase 1; AMPK: AMP-activated protein kinase; ATG: autophagy related; ATG4: autophagy related 4 cysteine peptidase; ATG5: autophagy related 5; ATG7: autophagy related 7; ATG12: autophagy related 12; BECN1: beclin 1; BNIP3: BCL2 interacting protein 3; CKD: chronic kidney disease; COPD: chronic obstructive pulmonary disease; CS: citrate synthase; DIA: diaphragm; EDL: extensor digitorum longus; FOXO3/FOXO3A: forkhead box O3; GAS; gastrocnemius; GP: gastrocnemius-plantaris complex; MAP1LC3/LC3: microtubule associated protein 1 light chain 3; MAPK: mitogen-activated protein kinase; MYH: myosin heavy chain; PINK1: PTEN induced kinase 1; PLANT: plantaris; PRKN: parkin RBR E3 ubiquitin protein ligase; QUAD: quadriceps; RA: rectus abdominis; RG: red gastrocnemius; RQ: red quadriceps; SOL: soleus; SQSTM1: sequestosome 1; TA: tibialis anterior; WG: white gastrocnemius; WQ: white quadriceps; WVL: white vastus lateralis; VL: vastus lateralis; ULK1: unc-51 like autophagy activating kinase 1.
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Affiliation(s)
- Fasih A. Rahman
- Department of Kinesiology and Health Sciences, University of Waterloo, Waterloo, Ontario, Canada
| | - Brittany L. Baechler
- Department of Kinesiology and Health Sciences, University of Waterloo, Waterloo, Ontario, Canada
| | - Joe Quadrilatero
- Department of Kinesiology and Health Sciences, University of Waterloo, Waterloo, Ontario, Canada
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Akabane T, Sagae H, van Wijk K, Saitoh S, Kimura T, Okano S, Kodama K, Takahashi K, Nakajima M, Tanaka T, Takagi M, Nakajima O. Heme deficiency in skeletal muscle exacerbates sarcopenia and impairs autophagy by reducing AMPK signaling. Sci Rep 2024; 14:22147. [PMID: 39333763 PMCID: PMC11437137 DOI: 10.1038/s41598-024-73049-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 09/12/2024] [Indexed: 09/30/2024] Open
Abstract
Heme serves as a prosthetic group in hemoproteins, including subunits of the mammalian mitochondrial electron transfer chain. The first enzyme in vertebrate heme biosynthesis, 5-aminolevulinic acid synthase 1 (ALAS1), is ubiquitously expressed and essential for producing 5-aminolevulinic acid (ALA). We previously showed that Alas1 heterozygous mice at 20-35 weeks (aged-A1+/-s) manifested impaired glucose metabolism, mitochondrial malformation in skeletal muscle, and reduced exercise tolerance, potentially linked to autophagy dysfunction. In this study, we investigated autophagy in A1+/-s and a sarcopenic phenotype in A1+/-s at 75-95 weeks (senile-A1+/-s). Senile-A1+/-s exhibited significantly reduced body and gastrocnemius muscle weight, and muscle strength, indicating an accelerated sarcopenic phenotype. Decreases in total LC3 and LC3-II protein and Map1lc3a mRNA levels were observed in aged-A1+/-s under fasting conditions and in Alas1 knockdown myocyte-differentiated C2C12 cells (A1KD-C2C12s) cultured in high- or low-glucose medium. ALA treatment largely reversed these declines. Reduced AMP-activated protein kinase (AMPK) signaling was associated with decreased autophagy in aged-A1+/-s and A1KD-C2C12s. AMPK modulation using AICAR (activator) and dorsomorphin (inhibitor) affected LC3 protein levels in an AMPK-dependent manner. Our findings suggest that heme deficiency contributes to accelerated sarcopenia-like defects and reduced autophagy in skeletal muscle, primarily due to decreased AMPK signaling.
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Affiliation(s)
- Takeru Akabane
- Department of Functional Genomics, Major of Innovative Medical Science Research, Yamagata University School of Medicine/Research Center for Molecular Genetics, Institute for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, Iida-Nishi 2-2-2 Yamagata, Yamagata, 990-9585, Japan
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Hiromori Sagae
- Department of Functional Genomics, Major of Innovative Medical Science Research, Yamagata University School of Medicine/Research Center for Molecular Genetics, Institute for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, Iida-Nishi 2-2-2 Yamagata, Yamagata, 990-9585, Japan
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Koen van Wijk
- Department of Functional Genomics, Major of Innovative Medical Science Research, Yamagata University School of Medicine/Research Center for Molecular Genetics, Institute for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, Iida-Nishi 2-2-2 Yamagata, Yamagata, 990-9585, Japan
| | - Shinichi Saitoh
- Department of Functional Genomics, Major of Innovative Medical Science Research, Yamagata University School of Medicine/Research Center for Molecular Genetics, Institute for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, Iida-Nishi 2-2-2 Yamagata, Yamagata, 990-9585, Japan
| | - Tomohiro Kimura
- Department of Functional Genomics, Major of Innovative Medical Science Research, Yamagata University School of Medicine/Research Center for Molecular Genetics, Institute for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, Iida-Nishi 2-2-2 Yamagata, Yamagata, 990-9585, Japan
| | - Satoshi Okano
- Department of Functional Genomics, Major of Innovative Medical Science Research, Yamagata University School of Medicine/Research Center for Molecular Genetics, Institute for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, Iida-Nishi 2-2-2 Yamagata, Yamagata, 990-9585, Japan
| | | | | | | | | | - Michiaki Takagi
- Department of Orthopaedic Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - Osamu Nakajima
- Department of Functional Genomics, Major of Innovative Medical Science Research, Yamagata University School of Medicine/Research Center for Molecular Genetics, Institute for Promotion of Medical Science Research, Yamagata University Faculty of Medicine, Iida-Nishi 2-2-2 Yamagata, Yamagata, 990-9585, Japan.
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5
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Grima-Terrén M, Campanario S, Ramírez-Pardo I, Cisneros A, Hong X, Perdiguero E, Serrano AL, Isern J, Muñoz-Cánoves P. Muscle aging and sarcopenia: The pathology, etiology, and most promising therapeutic targets. Mol Aspects Med 2024; 100:101319. [PMID: 39312874 DOI: 10.1016/j.mam.2024.101319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 09/13/2024] [Accepted: 09/16/2024] [Indexed: 09/25/2024]
Abstract
Sarcopenia is a progressive muscle wasting disorder that severely impacts the quality of life of elderly individuals. Although the natural aging process primarily causes sarcopenia, it can develop in response to other conditions. Because muscle function is influenced by numerous changes that occur with age, the etiology of sarcopenia remains unclear. However, recent characterizations of the aging muscle transcriptional landscape, signaling pathway disruptions, fiber and extracellular matrix compositions, systemic metabolomic and inflammatory responses, mitochondrial function, and neurological inputs offer insights and hope for future treatments. This review will discuss age-related changes in healthy muscle and our current understanding of how this can deteriorate into sarcopenia. As our elderly population continues to grow, we must understand sarcopenia and find treatments that allow individuals to maintain independence and dignity throughout an extended lifespan.
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Affiliation(s)
- Mercedes Grima-Terrén
- Altos Labs, San Diego Institute of Science, San Diego, CA, 92121, USA; Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, 08003, Spain
| | - Silvia Campanario
- Altos Labs, San Diego Institute of Science, San Diego, CA, 92121, USA; Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, 08003, Spain
| | - Ignacio Ramírez-Pardo
- Altos Labs, San Diego Institute of Science, San Diego, CA, 92121, USA; Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, 08003, Spain
| | - Andrés Cisneros
- Altos Labs, San Diego Institute of Science, San Diego, CA, 92121, USA; Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, 08003, Spain
| | - Xiaotong Hong
- Altos Labs, San Diego Institute of Science, San Diego, CA, 92121, USA
| | | | - Antonio L Serrano
- Altos Labs, San Diego Institute of Science, San Diego, CA, 92121, USA
| | - Joan Isern
- Altos Labs, San Diego Institute of Science, San Diego, CA, 92121, USA
| | - Pura Muñoz-Cánoves
- Altos Labs, San Diego Institute of Science, San Diego, CA, 92121, USA; Department of Medicine and Life Sciences, Universitat Pompeu Fabra (UPF), Barcelona, 08003, Spain.
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6
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Riemann BL, Johnson M, Helms MK, Hatchett A, Vondrasek JD, Watts CQ, Huebner M. Countermovement Jump Peak Power Changes with Age in Masters Weightlifters. Sports (Basel) 2024; 12:259. [PMID: 39330736 PMCID: PMC11436148 DOI: 10.3390/sports12090259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2024] [Revised: 09/16/2024] [Accepted: 09/18/2024] [Indexed: 09/28/2024] Open
Abstract
Aging is associated with decreased muscle strength and power. Power is particularly important for maintaining the independence of older adults when performing activities of daily living. The countermovement jump has been identified as a reliable and safe method to assess lower extremity power across the lifespan. The purpose of this investigation was to study sex differences and age-related changes in countermovement jump peak power among masters weightlifters with the secondary purpose of comparing results to previous reports of community and masters athletes. Female (n = 63, 39 to 70 yrs, med (56 yrs)) and male (n = 39, 35 to 86 yrs, med (59 yrs)) participants of the 2022 World Masters Championships completed three maximal effort countermovement jump repetitions following a dynamic warm-up. Vertical ground reaction forces were recorded, and peak power normalized to body mass was calculated. Results indicated significant age-related peak power among weightlifters, with the decline being significantly more pronounced in males than females. Female weightlifters exhibited less age-related decline compared to normative data as well as the other Master athlete comparison cohorts (short and long-distance runners), whereas the males demonstrated similar age-related declines as the comparison cohorts. While the female weightlifters in the current study generally demonstrated the least age-related declines in CMJ peak power of the comparative literature, the male weightlifters showed similar age-related decline rates.
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Affiliation(s)
- Bryan L Riemann
- Biodynamics and Human Performance Center, Georgia Southern University-Armstrong Campus, Savannah, GA 31419, USA
| | - Matthew Johnson
- Biodynamics and Human Performance Center, Georgia Southern University-Armstrong Campus, Savannah, GA 31419, USA
| | - Matthew K Helms
- Biodynamics and Human Performance Center, Georgia Southern University-Armstrong Campus, Savannah, GA 31419, USA
| | - Andrew Hatchett
- Department of Exercise and Sport Science, University of South Carolina Aiken, Aiken, SC 29801, USA
| | - Joseph D Vondrasek
- Biodynamics and Human Performance Center, Georgia Southern University-Armstrong Campus, Savannah, GA 31419, USA
| | - Cullun Q Watts
- Biodynamics and Human Performance Center, Georgia Southern University-Armstrong Campus, Savannah, GA 31419, USA
| | - Marianne Huebner
- Department of Statistics and Probability, Michigan State University, East Lansing, MI 48824, USA
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7
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Belenguer Á, Naya-Català F, Calduch-Giner JÀ, Pérez-Sánchez J. Exploring Multifunctional Markers of Biological Age in Farmed Gilthead Sea Bream ( Sparus aurata): A Transcriptomic and Epigenetic Interplay for an Improved Fish Welfare Assessment Approach. Int J Mol Sci 2024; 25:9836. [PMID: 39337324 PMCID: PMC11432111 DOI: 10.3390/ijms25189836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 09/05/2024] [Accepted: 09/10/2024] [Indexed: 09/30/2024] Open
Abstract
DNA methylation clocks provide information not only about chronological but also biological age, offering a high-resolution and precise understanding of age-related pathology and physiology. Attempts based on transcriptomic and epigenetic approaches arise as integrative biomarkers linking the quantification of stress responses with specific fitness traits and may help identify biological age markers, which are also considered welfare indicators. In gilthead sea bream, targeted gene expression and DNA methylation analyses in white skeletal muscle proved sirt1 as a reliable marker of age-mediated changes in energy metabolism. To complete the list of welfare auditing biomarkers, wide analyses of gene expression and DNA methylation in one- and three-year-old fish were combined. After discriminant analysis, 668 differentially expressed transcripts were matched with those containing differentially methylated (DM) regions (14,366), and 172 were overlapping. Through enrichment analyses and selection, two sets of genes were retained: 33 showing an opposite trend for DNA methylation and expression, and 57 down-regulated and hypo-methylated. The first set displayed an apparently more reproducible and reliable pattern and 10 multifunctional genes with DM CpG in regulatory regions (sirt1, smad1, ramp1, psmd2-up-regulated; col5a1, calcrl, bmp1, thrb, spred2, atp1a2-down-regulated) were deemed candidate biological age markers for improved welfare auditing in gilthead sea bream.
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Affiliation(s)
- Álvaro Belenguer
- Instituto de Acuicultura Torre de la Sal (IATS, CSIC), 12595 Ribera de Cabanes, Castellón, Spain
| | - Fernando Naya-Català
- Instituto de Acuicultura Torre de la Sal (IATS, CSIC), 12595 Ribera de Cabanes, Castellón, Spain
| | | | - Jaume Pérez-Sánchez
- Instituto de Acuicultura Torre de la Sal (IATS, CSIC), 12595 Ribera de Cabanes, Castellón, Spain
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Ersoy U, Altinpinar AE, Kanakis I, Alameddine M, Gioran A, Chondrogianni N, Ozanne SE, Peffers MJ, Jackson MJ, Goljanek-Whysall K, Vasilaki A. Lifelong dietary protein restriction induces denervation and skeletal muscle atrophy in mice. Free Radic Biol Med 2024; 224:457-469. [PMID: 39245354 DOI: 10.1016/j.freeradbiomed.2024.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Revised: 09/02/2024] [Accepted: 09/05/2024] [Indexed: 09/10/2024]
Abstract
As a widespread global issue, protein deficiency hinders development and optimal growth in offspring. Maternal low-protein diet influences the development of age-related diseases, including sarcopenia, by altering the epigenome and organ structure through potential increase in oxidative stress. However, the long-term effects of lactational protein restriction or postnatal lifelong protein restriction on the neuromuscular system have yet to be elucidated. Our results demonstrated that feeding a normal protein diet after lactational protein restriction did not have significant impacts on the neuromuscular system in later life. In contrast, a lifelong low-protein diet induced a denervation phenotype and led to demyelination in the sciatic nerve, along with an increase in the number of centralised nuclei and in the gene expression of atrogenes at 18 months of age, indicating an induced skeletal muscle atrophy. These changes were accompanied by an increase in proteasome activity in skeletal muscle, with no significant alterations in oxidative stress or mitochondrial dynamics markers in skeletal muscle later in life. Thus, lifelong protein restriction may induce skeletal muscle atrophy through changes in peripheral nerves and neuromuscular junctions, potentially contributing to the early onset or exaggeration of sarcopenia.
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Affiliation(s)
- Ufuk Ersoy
- Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences (ILCaMS), The MRC - Versus Arthritis Centre for Integrated Research Into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK.
| | - Atilla Emre Altinpinar
- Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences (ILCaMS), The MRC - Versus Arthritis Centre for Integrated Research Into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK.
| | - Ioannis Kanakis
- Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences (ILCaMS), The MRC - Versus Arthritis Centre for Integrated Research Into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK; Chester Medical School, Faculty of Medicine and Life Sciences, University of Chester, Chester, UK.
| | - Moussira Alameddine
- Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences (ILCaMS), The MRC - Versus Arthritis Centre for Integrated Research Into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK.
| | - Anna Gioran
- Institute of Chemical Biology, National Hellenic Research Foundation, Athens, Greece.
| | - Niki Chondrogianni
- Institute of Chemical Biology, National Hellenic Research Foundation, Athens, Greece.
| | - Susan E Ozanne
- MRC Metabolic Diseases Unit, Wellcome Trust-MRC Institute of Metabolic Science, Addenbrooke's Treatment Centre, Addenbrooke's Hospital, University of Cambridge Metabolic Research Laboratories, Cambridge, UK.
| | - Mandy Jayne Peffers
- Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences (ILCaMS), The MRC - Versus Arthritis Centre for Integrated Research Into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK.
| | - Malcolm J Jackson
- Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences (ILCaMS), The MRC - Versus Arthritis Centre for Integrated Research Into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK.
| | - Katarzyna Goljanek-Whysall
- Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences (ILCaMS), The MRC - Versus Arthritis Centre for Integrated Research Into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK; Department of Physiology, School of Medicine and REMEDI, CMNHS, University of Galway, Galway, Ireland.
| | - Aphrodite Vasilaki
- Department of Musculoskeletal and Ageing Science, Institute of Life Course & Medical Sciences (ILCaMS), The MRC - Versus Arthritis Centre for Integrated Research Into Musculoskeletal Ageing (CIMA), University of Liverpool, Liverpool, UK.
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9
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Han J, Choi SY, Choi RY, Park KW, Kang KY, Lee MK. Anti-muscle atrophy effect of fermented Tenebrio molitor larvae extract by modulating the PI3K-Akt-mTOR/FoxO3α pathway in mice treated with dexamethasone. Biomed Pharmacother 2024; 178:117266. [PMID: 39137649 DOI: 10.1016/j.biopha.2024.117266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 07/29/2024] [Accepted: 08/05/2024] [Indexed: 08/15/2024] Open
Abstract
This study investigated the anti-sarcopenic effect of fermented Tenebrio molitor larvae (mealworms) extract (FME) in both dexamethasone (DEX)-treated C2C12 cells and mice. FME (100 µg/mL) increased the diameter of myotubes and inhibited the gene and protein expression of atrogin-1 compared to DEX- or non-fermented mealworms extract (ME)-treated C2C12 cells. Male C57BL/6N mice were divided into five groups: Normal Control (NC), DEX (10 mg/kg, intraperitoneal), and three groups of DEX+FME (100, 200, or 500 mg FME/kg/day, oral) for two weeks. FME at doses of 200 and 500 mg/kg effectively improved grip strength when compared to the DEX group. Histological analysis of the quadriceps muscle showed a larger muscle fiber size in the DEX+FME groups compared to DEX group. FME (200 and 500 mg/kg) significantly increased cross-sectional area of the muscle fiber compared to DEX group. FME (500 mg/kg) significantly decreased the ubiquitin, atrogin-1 and MuRF-1 protein levels, and increased levels of MHC and MyoG in DEX-treated mice. The puromycin labeling assay revealed that FME increased protein synthesis in DEX-induced muscle atrophy. The FME treatment demonstrated significant upregulation in phosphorylation levels, including mTOR, FoxO3α, Akt, and PI3K compared to DEX group. In conclusion, FME inhibited the increase in proteins associated with muscle atrophy, including, atrogin-1 and MuRF-1, by regulating the PI3K-Akt-FoxO3α pathway. FME improved the PI3K-Akt-mTOR signaling pathway, which was reduced by DEX. This study suggests that FME has the potential for use in sarcopenia therapy, possibly serving as a natural agent that counteracts the negative effects of DEX on muscle tissue.
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Affiliation(s)
- Jisu Han
- Department of Food and Nutrition, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Soo-Young Choi
- Department of Food and Nutrition, Sunchon National University, Suncheon 57922, Republic of Korea
| | - Ra-Yeong Choi
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Republic of Korea
| | - Kyung-Wuk Park
- Suncheon Research Center for Bio Health Care, Suncheon 57962, Republic of Korea
| | - Kyung-Yun Kang
- Suncheon Research Center for Bio Health Care, Suncheon 57962, Republic of Korea
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Suncheon 57922, Republic of Korea.
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10
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Filippini M, Bugli S, Biordi N, Muccioli F, Reggini V, Benedettini M, Migliore S, Pieri L, Comito A, Pennati BM, Fusco I, Isaza PG, Dominguez AP, Zingoni T, Farinelli M. Myostatin Changes in Females with UI after Magnetic Stimulation: A Quasi-Experimental Study. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:1399. [PMID: 39336440 PMCID: PMC11434281 DOI: 10.3390/medicina60091399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 07/01/2024] [Accepted: 08/08/2024] [Indexed: 09/30/2024]
Abstract
Background and Objectives: Urinary incontinence (UI) is the involuntary loss of urine caused by a weakness in the pelvic floor muscles (PFMs) that affects urethral closure. Myostatin, which prevents the growth of muscles, is a protein expressed by human skeletal muscle cells. Indeed, it has been observed that myostatin concentration rises during skeletal muscle inactivity and that suppressing serum myostatin promotes muscle growth and strength. Furthermore, therapeutic interventions that reduce myostatin signalling may lessen the effects of aging on skeletal muscle mass and function. For this reason, the aim of the study was to assess if flat magnetic stimulation technology affects serum myostatin levels, as myostatin can block cell proliferation at the urethral sphincter level. Materials and Methods: A total of 19 women, 75% presenting stress urinary incontinence (SUI) and 25% urgency urinary incontinence (UUI), were enrolled. A non-invasive electromagnetic therapeutic system designed for deep pelvic floor area stimulation was used for eight sessions. Results: The ELISA (enzyme linked immunosorbent assay) test indicated that the myostatin levels in blood sera had significantly decreased. Patients' ultrasound measurements showed a significant genital hiatus length reduction at rest and in a stress condition. The Pelvic Floor Bother Questionnaire consistently revealed a decrease in mean scores when comparing the pre- and post-treatment data. Conclusions: Effective flat magnetic stimulation reduces myostatin concentration and genital hiatus length, minimizing the severity of urinary incontinence. The results of the study show that without causing any discomfort or unfavourable side effects, the treatment plan significantly improved the PFM tone and strength in patients with UI.
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Affiliation(s)
- Maurizio Filippini
- Department of Obstetrics and Gynaecology, Hospital State of Republic of San Marino, 47893 San Marino, San Marino; (M.F.); (S.B.); (N.B.); (S.M.); (M.F.)
| | - Simona Bugli
- Department of Obstetrics and Gynaecology, Hospital State of Republic of San Marino, 47893 San Marino, San Marino; (M.F.); (S.B.); (N.B.); (S.M.); (M.F.)
| | - Nicoletta Biordi
- Department of Obstetrics and Gynaecology, Hospital State of Republic of San Marino, 47893 San Marino, San Marino; (M.F.); (S.B.); (N.B.); (S.M.); (M.F.)
| | - Fausto Muccioli
- Department of Transfusion Medicine and Clinical Pathology, Hospital State of Republic of San Marino, 47893 San Marino, San Marino; (F.M.); (V.R.); (M.B.)
| | - Valentina Reggini
- Department of Transfusion Medicine and Clinical Pathology, Hospital State of Republic of San Marino, 47893 San Marino, San Marino; (F.M.); (V.R.); (M.B.)
| | - Milena Benedettini
- Department of Transfusion Medicine and Clinical Pathology, Hospital State of Republic of San Marino, 47893 San Marino, San Marino; (F.M.); (V.R.); (M.B.)
| | - Serena Migliore
- Department of Obstetrics and Gynaecology, Hospital State of Republic of San Marino, 47893 San Marino, San Marino; (M.F.); (S.B.); (N.B.); (S.M.); (M.F.)
| | - Laura Pieri
- El. En. Group, 50041 Florence, Italy; (L.P.); (A.C.); (B.M.P.); (T.Z.)
| | - Alessandra Comito
- El. En. Group, 50041 Florence, Italy; (L.P.); (A.C.); (B.M.P.); (T.Z.)
| | | | - Irene Fusco
- El. En. Group, 50041 Florence, Italy; (L.P.); (A.C.); (B.M.P.); (T.Z.)
| | - Pablo Gonzalez Isaza
- Division of Urogynecology and Pelvic Reconstructive Surgery, Department of Obstetrics and Gynecology, San Jorge University Hospital, Pereira 660002, Colombia;
| | - Antonio Posada Dominguez
- Colsposcopy Unit, Department Obstetrics and Gynecology, Centro Hospitalario La Concepcion, Saltillo 25230, Mexico;
| | - Tiziano Zingoni
- El. En. Group, 50041 Florence, Italy; (L.P.); (A.C.); (B.M.P.); (T.Z.)
| | - Miriam Farinelli
- Department of Obstetrics and Gynaecology, Hospital State of Republic of San Marino, 47893 San Marino, San Marino; (M.F.); (S.B.); (N.B.); (S.M.); (M.F.)
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11
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Batitucci G, Abud GF, Ortiz GU, Belisário LF, Travieso SG, de Lima Viliod MC, Venturini ACR, de Freitas EC. Sarcobesity: New paradigms for healthy aging related to taurine supplementation, gut microbiota and exercise. Ageing Res Rev 2024; 101:102460. [PMID: 39173917 DOI: 10.1016/j.arr.2024.102460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 07/16/2024] [Accepted: 08/15/2024] [Indexed: 08/24/2024]
Abstract
Enigmatic sarcopenic obesity is still a challenge for science and adds to the global public health burden. The progressive accumulation of body fat combined with a dysfunctional skeletal muscle structure and composition, oxidative stress, mitochondrial dysfunction, and anabolic resistance, among other aggravating factors, together represent the seriousness and complexity of treating the metabolic disorder of sarcobesity in aging. For this reason, further studies are needed that encourage the support of therapeutic management. It is along these lines that we direct the reader to therapeutic approaches that demonstrate important, but still obscure, outcomes in the physiological conditions of sarcobesity, such as the role of taurine in modulating inflammatory and antioxidant mechanisms in muscle and adipose tissue, as well as the management of gut microbiota, able to systemically re-establish the structure and function of the gut-muscle axis, in addition to the merits of physical exercise as an instrument to improve muscular health and lifestyle quality.
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Affiliation(s)
- Gabriela Batitucci
- School of Medical Sciences, Obesity and Comorbidities Research Center, University of Campinas - UNICAMP, Campinas, Sao Paulo, Brazil
| | - Gabriela Ferreira Abud
- Department of Health Sciences, Ribeirao Preto Medical School, University of São Paulo - FMRP/USP, Ribeirao Preto, Sao Paulo, Brazil
| | - Gabriela Ueta Ortiz
- Department of Health Sciences, Ribeirao Preto Medical School, University of São Paulo - FMRP/USP, Ribeirao Preto, Sao Paulo, Brazil
| | - Lucas Fernandes Belisário
- Laboratory of Exercise Physiology and Metabolism, School of Physical Education and Sports of Ribeirao Preto, University of Sao Paulo - EEFERP/USP, Ribeirao Preto, Brazil
| | - Sofia Germano Travieso
- Department of Health Sciences, Ribeirao Preto Medical School, University of São Paulo - FMRP/USP, Ribeirao Preto, Sao Paulo, Brazil
| | - Marcela Coffacci de Lima Viliod
- Laboratory of Exercise Physiology and Metabolism, School of Physical Education and Sports of Ribeirao Preto, University of Sao Paulo - EEFERP/USP, Ribeirao Preto, Brazil
| | - Ana Cláudia Rossini Venturini
- Laboratory of Exercise Physiology and Metabolism, School of Physical Education and Sports of Ribeirao Preto, University of Sao Paulo - EEFERP/USP, Ribeirao Preto, Brazil
| | - Ellen Cristini de Freitas
- Department of Health Sciences, Ribeirao Preto Medical School, University of São Paulo - FMRP/USP, Ribeirao Preto, Sao Paulo, Brazil; Laboratory of Exercise Physiology and Metabolism, School of Physical Education and Sports of Ribeirao Preto, University of Sao Paulo - EEFERP/USP, Ribeirao Preto, Brazil.
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12
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Chambers TL, Dimet-Wiley A, Keeble AR, Haghani A, Lo WJ, Kang G, Brooke R, Horvath S, Fry CS, Watowich SJ, Wen Y, Murach KA. Methylome-proteome integration after late-life voluntary exercise training reveals regulation and target information for improved skeletal muscle health. J Physiol 2024. [PMID: 39058663 DOI: 10.1113/jp286681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 07/02/2024] [Indexed: 07/28/2024] Open
Abstract
Exercise is a potent stimulus for combatting skeletal muscle ageing. To study the effects of exercise on muscle in a preclinical setting, we developed a combined endurance-resistance training stimulus for mice called progressive weighted wheel running (PoWeR). PoWeR improves molecular, biochemical, cellular and functional characteristics of skeletal muscle and promotes aspects of partial epigenetic reprogramming when performed late in life (22-24 months of age). In this investigation, we leveraged pan-mammalian DNA methylome arrays and tandem mass-spectrometry proteomics in skeletal muscle to provide detailed information on late-life PoWeR adaptations in female mice relative to age-matched sedentary controls (n = 7-10 per group). Differential CpG methylation at conserved promoter sites was related to transcriptional regulation genes as well as Nr4a3, Hes1 and Hox genes after PoWeR. Using a holistic method of -omics integration called binding and expression target analysis (BETA), methylome changes were associated with upregulated proteins related to global and mitochondrial translation after PoWeR (P = 0.03). Specifically, BETA implicated methylation control of ribosomal, mitoribosomal, and mitochondrial complex I protein abundance after training. DNA methylation may also influence LACTB, MIB1 and UBR4 protein induction with exercise - all are mechanistically linked to muscle health. Computational cistrome analysis predicted several transcription factors including MYC as regulators of the exercise trained methylome-proteome landscape, corroborating prior late-life PoWeR transcriptome data. Correlating the proteome to muscle mass and fatigue resistance revealed positive relationships with VPS13A and NPL levels, respectively. Our findings expose differential epigenetic and proteomic adaptations associated with translational regulation after PoWeR that could influence skeletal muscle mass and function in aged mice. KEY POINTS: Late-life combined endurance-resistance exercise training from 22-24 months of age in mice is shown to improve molecular, biochemical, cellular and in vivo functional characteristics of skeletal muscle and promote aspects of partial epigenetic reprogramming and epigenetic age mitigation. Integration of DNA CpG 36k methylation arrays using conserved sites (which also contain methylation ageing clock sites) with exploratory proteomics in skeletal muscle extends our prior work and reveals coordinated and widespread regulation of ribosomal, translation initiation, mitochondrial ribosomal (mitoribosomal) and complex I proteins after combined voluntary exercise training in a sizeable cohort of female mice (n = 7-10 per group and analysis). Multi-omics integration predicted epigenetic regulation of serine β-lactamase-like protein (LACTB - linked to tumour resistance in muscle), mind bomb 1 (MIB1 - linked to satellite cell and type 2 fibre maintenance) and ubiquitin protein ligase E3 component N-recognin 4 (UBR4 - linked to muscle protein quality control) after training. Computational cistrome analysis identified MYC as a regulator of the late-life training proteome, in agreement with prior transcriptional analyses. Vacuolar protein sorting 13 homolog A (VPS13A) was positively correlated to muscle mass, and the glycoprotein/glycolipid associated sialylation enzyme N-acetylneuraminate pyruvate lyase (NPL) was associated to in vivo muscle fatigue resistance.
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Affiliation(s)
- Toby L Chambers
- Exercise Science Research Center, Molecular Muscle Mass Regulation Laboratory, Department of Health, Human Performance, and Recreation, University of Arkansas, Fayetteville, AR, USA
| | | | - Alexander R Keeble
- University of Kentucky Center for Muscle Biology, Lexington, KY, USA
- Department of Athletic Training and Clinical Nutrition, University of Kentucky, Lexington, KY, USA
| | - Amin Haghani
- Department of Human Genetics, University of California Los Angeles, Los Angeles, CA, USA
- Altos Labs, San Diego, CA, USA
| | - Wen-Juo Lo
- Department of Educational Statistics and Research Methods, University of Arkansas, Fayetteville, AR, USA
| | - Gyumin Kang
- University of Kentucky Center for Muscle Biology, Lexington, KY, USA
- Department of Physiology, University of Kentucky, Lexington, KY, USA
- Division of Biomedical Informatics, Department of Internal Medicine, University of Kentucky, Lexington, KY, USA
| | - Robert Brooke
- Epigenetic Clock Development Foundation, Los Angeles, CA, USA
| | - Steve Horvath
- Department of Human Genetics, University of California Los Angeles, Los Angeles, CA, USA
- Altos Labs, San Diego, CA, USA
- Epigenetic Clock Development Foundation, Los Angeles, CA, USA
| | - Christopher S Fry
- University of Kentucky Center for Muscle Biology, Lexington, KY, USA
- Department of Athletic Training and Clinical Nutrition, University of Kentucky, Lexington, KY, USA
| | - Stanley J Watowich
- Ridgeline Therapeutics, Houston, TX, USA
- Department of Biochemistry and Molecular Biology, University of Texas Medical Branch, Galveston, TX, USA
| | - Yuan Wen
- University of Kentucky Center for Muscle Biology, Lexington, KY, USA
- Department of Physiology, University of Kentucky, Lexington, KY, USA
- Division of Biomedical Informatics, Department of Internal Medicine, University of Kentucky, Lexington, KY, USA
| | - Kevin A Murach
- Exercise Science Research Center, Molecular Muscle Mass Regulation Laboratory, Department of Health, Human Performance, and Recreation, University of Arkansas, Fayetteville, AR, USA
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13
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Swalsingh G, Pani P, Senapati U, Sahu B, Pani S, Pati B, Rout S, Bal NC. Intramuscular administration of fractalkine modulates mitochondrial properties and promotes fast glycolytic phenotype. Biofactors 2024. [PMID: 39052304 DOI: 10.1002/biof.2092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 06/20/2024] [Indexed: 07/27/2024]
Abstract
A newly categorized myokine called fractalkine (CX3CL1) has been associated with divergent conditions such as obesity, tissue inflammation, and exercise. CX3CL1 works through specific membrane-bound receptors (CX3CR1) found in various tissues including skeletal muscles. Studies indicate CX3CL1 induces muscles to uptake energy substrates thereby improving glucose utilization and countering diabetes. Here, we tested if the administration of purified CX3CL1 directly into mice skeletal muscles affects its histoarchitecture, mitochondrial activity, and expression of metabolic proteins. We analyzed four muscles: two upper-limb (quadriceps, hamstrings) and two lower-limb (tibialis anterior, gastrocnemius), contralateral leg muscles were taken as controls. The effects of CX3CL1 treatment on histoarchitecture, mitochondrial activity, and expression of metabolic proteins in muscles were characterized. We used histochemical staining succinate dehydrogenase (SDH)/cytochrome c oxidase (COX), myosin ATPase, alkaline phosphatase (ALP) to evaluate the mitochondrial activity, fiber types, and vascularization in the muscles, respectively. Western blotting was used to evaluate the expression of proteins associated with mitochondrial metabolism (OXPHOS), glycolysis, and vascularization. Overall, this study indicates CX3CL1 primarily modulates mitochondrial metabolism and shifts substrate preference toward glucose in the skeletal muscle. Evidence also supports that CX3CL1 stimulates the relative composition of fast fiber types, influencing selection of energy substrates in the skeletal muscle.
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Affiliation(s)
| | - Punyadhara Pani
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Unmod Senapati
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Bijayashree Sahu
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Sunil Pani
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Benudhara Pati
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Subhasmita Rout
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Naresh C Bal
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
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14
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Choi S, Jun HP. Effects of Rehabilitative Exercise and Neuromuscular Electrical Stimulation on Muscle Morphology and Dynamic Balance in Individuals with Chronic Ankle Instability. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:1187. [PMID: 39064616 PMCID: PMC11279363 DOI: 10.3390/medicina60071187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 07/18/2024] [Accepted: 07/18/2024] [Indexed: 07/28/2024]
Abstract
Background and Objectives: Muscle atrophy caused by chronic ankle instability (CAI) can incur muscle weakness, altered movement patterns, and increased risk of injury. Previous studies have investigated the effects of rehabilitative exercises and neuromuscular electrical stimulation (NMES) on characteristics in CAI individuals, but few studies have examined their effects on foot and ankle muscle morphology. This study aimed to determine the effects of rehabilitative exercises and NMES on muscle morphology and dynamic balance in individuals with CAI. Materials and Methods: Participants with CAI (n = 47) were randomly divided into control (CG), rehabilitative exercise (REG), NMES (NG), and rehabilitative exercise and NMES combined (RNG) groups. The six-week intervention program consisting of rehabilitative exercises and NMES was applied to groups excluding CG. Muscle morphology and dynamic balance were evaluated using a portable wireless diagnostic ultrasound device and dynamic balance tests. For statistical analysis, an effect size with 95% confidence interval was calculated to assess mean differences according to intervention. Results: After six weeks, significant increases in morphology and dynamic balance were observed for all muscles except flexor hallucis longus (p > 0.05) in the intervention groups except for CG. However, no significant changes were observed in the CG (p > 0.05). Conclusions: These findings suggest that intervention programs may help prevent muscle atrophy and improve balance in CAI individuals.
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Affiliation(s)
| | - Hyung-pil Jun
- Department of Physical Education, Dong-A University, Busan 49315, Republic of Korea;
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15
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Guilherme JPLF, Semenova EA, Kikuchi N, Homma H, Kozuma A, Saito M, Zempo H, Matsumoto S, Kobatake N, Nakazato K, Okamoto T, John G, Yusupov RA, Larin AK, Kulemin NA, Gazizov IM, Generozov EV, Ahmetov II. Identification of Genomic Predictors of Muscle Fiber Size. Cells 2024; 13:1212. [PMID: 39056794 PMCID: PMC11274365 DOI: 10.3390/cells13141212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 06/27/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
The greater muscle fiber cross-sectional area (CSA) is associated with greater skeletal muscle mass and strength, whereas muscle fiber atrophy is considered a major feature of sarcopenia. Muscle fiber size is a polygenic trait influenced by both environmental and genetic factors. However, the genetic variants underlying inter-individual differences in muscle fiber size remain largely unknown. The aim of our study was to determine whether 1535 genetic variants previously identified in a genome-wide association study of appendicular lean mass are associated with the CSA of fast-twitch muscle fibers (which better predict muscle strength) in the m. vastus lateralis of 148 physically active individuals (19 power-trained and 28 endurance-trained females, age 28.0 ± 1.1; 28 power-trained and 73 endurance-trained males, age 31.1 ± 0.8). Fifty-seven single-nucleotide polymorphisms (SNPs) were identified as having an association with muscle fiber size (p < 0.05). Of these 57 SNPs, 31 variants were also associated with handgrip strength in the UK Biobank cohort (n = 359,729). Furthermore, using East Asian and East European athletic (n = 731) and non-athletic (n = 515) cohorts, we identified 16 SNPs associated with athlete statuses (sprinter, wrestler, strength, and speed-strength athlete) and weightlifting performance. All SNPs had the same direction of association, i.e., the lean mass-increasing allele was positively associated with the CSA of muscle fibers, handgrip strength, weightlifting performance, and power athlete status. In conclusion, we identified 57 genetic variants associated with both appendicular lean mass and fast-twitch muscle fiber size of m. vastus lateralis that may, in part, contribute to a greater predisposition to power sports.
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Affiliation(s)
| | - Ekaterina A. Semenova
- Department of Molecular Biology and Genetics, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 119435 Moscow, Russia (E.V.G.)
- Research Institute of Physical Culture and Sport, Volga Region State University of Physical Culture, Sport and Tourism, 420138 Kazan, Russia
| | - Naoki Kikuchi
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8581, Japan (S.M.); (K.N.)
| | - Hiroki Homma
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8581, Japan (S.M.); (K.N.)
| | - Ayumu Kozuma
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8581, Japan (S.M.); (K.N.)
| | - Mika Saito
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8581, Japan (S.M.); (K.N.)
- Graduate School of Health and Sports Science, Juntendo University, Chiba 270-1695, Japan
| | - Hirofumi Zempo
- Faculty of Health and Nutrition, Tokyo Seiei College, Tokyo 124-8530, Japan
| | - Shingo Matsumoto
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8581, Japan (S.M.); (K.N.)
| | - Naoyuki Kobatake
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8581, Japan (S.M.); (K.N.)
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8581, Japan (S.M.); (K.N.)
| | - Takanobu Okamoto
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo 158-8581, Japan (S.M.); (K.N.)
| | - George John
- Transform Specialist Medical Centre, Dubai 119190, United Arab Emirates
| | - Rinat A. Yusupov
- Department of Physical Culture and Sport, Kazan National Research Technical University Named after A.N. Tupolev-KAI, 420111 Kazan, Russia
| | - Andrey K. Larin
- Department of Molecular Biology and Genetics, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 119435 Moscow, Russia (E.V.G.)
| | - Nikolay A. Kulemin
- Department of Molecular Biology and Genetics, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 119435 Moscow, Russia (E.V.G.)
| | - Ilnaz M. Gazizov
- Department of Human Anatomy, Kazan State Medical University, 420012 Kazan, Russia;
| | - Edward V. Generozov
- Department of Molecular Biology and Genetics, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 119435 Moscow, Russia (E.V.G.)
| | - Ildus I. Ahmetov
- Department of Molecular Biology and Genetics, Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, 119435 Moscow, Russia (E.V.G.)
- Laboratory of Genetics of Aging and Longevity, Kazan State Medical University, 420012 Kazan, Russia
- Sports Genetics Laboratory, St. Petersburg Research Institute of Physical Culture, 191040 St. Petersburg, Russia
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 5AF, UK
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16
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Peng Y, Du J, Li R, Günther S, Wettschureck N, Offermanns S, Wang Y, Schneider A, Braun T. RhoA-mediated G 12-G 13 signaling maintains muscle stem cell quiescence and prevents stem cell loss. Cell Discov 2024; 10:76. [PMID: 39009565 PMCID: PMC11251043 DOI: 10.1038/s41421-024-00696-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 05/27/2024] [Indexed: 07/17/2024] Open
Abstract
Multiple processes control quiescence of muscle stem cells (MuSCs), which is instrumental to guarantee long-term replenishment of the stem cell pool. Here, we describe that the G-proteins G12-G13 integrate signals from different G-protein-coupled receptors (GPCRs) to control MuSC quiescence via activation of RhoA. Comprehensive screening of GPCR ligands identified two MuSC-niche-derived factors, endothelin-3 (ET-3) and neurotensin (NT), which activate G12-G13 signaling in MuSCs. Stimulation with ET-3 or NT prevented MuSC activation, whereas pharmacological inhibition of ET-3 or NT attenuated MuSC quiescence. Inactivation of Gna12-Gna13 or Rhoa but not of Gnaq-Gna11 completely abrogated MuSC quiescence, which depleted the MuSC pool and was associated with accelerated sarcopenia during aging. Expression of constitutively active RhoA prevented exit from quiescence in Gna12-Gna13 mutant MuSCs, inhibiting cell cycle entry and differentiation via Rock and formins without affecting Rac1-dependent MuSC projections, a hallmark of quiescent MuSCs. The study uncovers a critical role of G12-G13 and RhoA signaling for active regulation of MuSC quiescence.
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Affiliation(s)
- Yundong Peng
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.
| | - Jingjing Du
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Rui Li
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Stefan Günther
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Nina Wettschureck
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
- Member of the German Center for Cardiovascular Research (DZHK), member of the German Center for Lung Research (DZL), Berlin, Germany
| | - Stefan Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
- Member of the German Center for Cardiovascular Research (DZHK), member of the German Center for Lung Research (DZL), Berlin, Germany
| | - Yan Wang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Andre Schneider
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Thomas Braun
- Department of Cardiac Development and Remodeling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.
- Member of the German Center for Cardiovascular Research (DZHK), member of the German Center for Lung Research (DZL), Berlin, Germany.
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17
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Zhang Y, Morita M, Hirano T, Doi K, Han X, Matsunaga K, Jiang Z. A Novel Method for Identifying Frailty and Quantifying Muscle Strength Using the Six-Minute Walking Test. SENSORS (BASEL, SWITZERLAND) 2024; 24:4489. [PMID: 39065887 PMCID: PMC11281094 DOI: 10.3390/s24144489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 07/09/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024]
Abstract
The six-minute walking test (6MWT) is an essential test for evaluating exercise tolerance in many respiratory and cardiovascular diseases. Frailty and sarcopenia can cause rapid aging of the cardiovascular system in elderly people. Early detection and evaluation of frailty and sarcopenia are crucial for determining the treatment method. We aimed to develop a wearable measuring system for the 6MWT and propose a method for identifying frailty and quantifying walking muscle strength (WMS). In this study, 60 elderly participants were asked to wear accelerometers behind their left and right ankles during the 6MWT. The gait data were collected by a computer or smartphone. We proposed a method for analyzing walking performance using the stride length (SL) and step cadence (SC) instead of gait speed directly. Four regions (Range I-IV) were divided by cutoff values of SC = 2.0 [step/s] and SL = 0.6 [m/step] for a quick view of the frail state. There were 62.5% of frail individuals distributed in Range III and 72.4% of non-frail individuals in Range I. A concept of a WMS score was proposed for estimating WMS quantitatively. We found that 62.5% of frail individuals were scored as WMS1 and 41.4% of the non-frail elderly as WMS4. The average walking distances corresponding to WMS1-4 were 207 m, 370 m, 432 m, and 462 m, respectively. The WMS score may be a useful tool for quantitatively estimating sarcopenia or frailty due to reduced cardiopulmonary function.
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Affiliation(s)
- Yunjin Zhang
- Faculty of Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube 755-8611, Japan
| | - Minoru Morita
- Faculty of Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube 755-8611, Japan
| | - Tsunahiko Hirano
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1, Minamikogushi, Ube 755-8505, Japan
| | - Keiko Doi
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1, Minamikogushi, Ube 755-8505, Japan
- Department of Pulmonology and Gerontology, Graduate School of Medicine, Yamaguchi University, 1-1-1, Minamikogushi, Ube 755-8505, Japan
| | - Xin Han
- Faculty of Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube 755-8611, Japan
| | - Kazuto Matsunaga
- Department of Respiratory Medicine and Infectious Disease, Graduate School of Medicine, Yamaguchi University, 1-1-1, Minamikogushi, Ube 755-8505, Japan
| | - Zhongwei Jiang
- Faculty of Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 2-16-1 Tokiwadai, Ube 755-8611, Japan
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18
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Schenk S, Sagendorf TJ, Many GM, Lira AK, de Sousa LGO, Bae D, Cicha M, Kramer KS, Muehlbauer M, Hevener AL, Rector RS, Thyfault JP, Williams JP, Goodyear LJ, Esser KA, Newgard CB, Bodine SC. Physiological Adaptations to Progressive Endurance Exercise Training in Adult and Aged Rats: Insights from the Molecular Transducers of Physical Activity Consortium (MoTrPAC). FUNCTION 2024; 5:zqae014. [PMID: 38984994 PMCID: PMC11245678 DOI: 10.1093/function/zqae014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/31/2024] [Accepted: 03/19/2024] [Indexed: 07/11/2024] Open
Abstract
While regular physical activity is a cornerstone of health, wellness, and vitality, the impact of endurance exercise training on molecular signaling within and across tissues remains to be delineated. The Molecular Transducers of Physical Activity Consortium (MoTrPAC) was established to characterize molecular networks underlying the adaptive response to exercise. Here, we describe the endurance exercise training studies undertaken by the Preclinical Animal Sites Studies component of MoTrPAC, in which we sought to develop and implement a standardized endurance exercise protocol in a large cohort of rats. To this end, Adult (6-mo) and Aged (18-mo) female (n = 151) and male (n = 143) Fischer 344 rats were subjected to progressive treadmill training (5 d/wk, ∼70%-75% VO2max) for 1, 2, 4, or 8 wk; sedentary rats were studied as the control group. A total of 18 solid tissues, as well as blood, plasma, and feces, were collected to establish a publicly accessible biorepository and for extensive omics-based analyses by MoTrPAC. Treadmill training was highly effective, with robust improvements in skeletal muscle citrate synthase activity in as little as 1-2 wk and improvements in maximum run speed and maximal oxygen uptake by 4-8 wk. For body mass and composition, notable age- and sex-dependent responses were observed. This work in mature, treadmill-trained rats represents the most comprehensive and publicly accessible tissue biorepository, to date, and provides an unprecedented resource for studying temporal-, sex-, and age-specific responses to endurance exercise training in a preclinical rat model.
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Affiliation(s)
- Simon Schenk
- Department of Orthopaedic Surgery, School of Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Tyler J Sagendorf
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Gina M Many
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Ana K Lira
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Luis G O de Sousa
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
| | - Dam Bae
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Michael Cicha
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Kyle S Kramer
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
| | - Michael Muehlbauer
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC 27701, USA
| | - Andrea L Hevener
- Division of Endocrinology, Diabetes, and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - R Scott Rector
- Research Service,
Harry S. Truman Memorial Veterans’ Medical Center, Columbia, MO 65201, USA
- NextGen Precision Health,
University of Missouri, Columbia, MO 65201, USA
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO 65211, USA
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Missouri, Columbia, MO 65211, USA
| | - John P Thyfault
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
- KU Diabetes Institute, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - John P Williams
- Division of Aging Biology, National Institute on Aging, National Institutes of Health, Bethesda, MD 20898, USA
| | - Laurie J Goodyear
- Section on Integrative Physiology and Metabolism,
Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
| | - Karyn A Esser
- Department of Physiology and Aging, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Christopher B Newgard
- Duke Molecular Physiology Institute, Duke University Medical Center, Durham, NC 27701, USA
| | - Sue C Bodine
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
- Aging and Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
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19
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Ji Y, Yoon MJ, Song K, Choi S, Lee H, Jung JY, Song S, Kim I, Kim JY, Im S. Feasibility of Sarcopenia Diagnosis Using Stimulated Muscle Contraction Signal in Hemiplegic Stroke Patients. BRAIN & NEUROREHABILITATION 2024; 17:e10. [PMID: 39113921 PMCID: PMC11300960 DOI: 10.12786/bn.2024.17.e10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 05/02/2024] [Indexed: 08/10/2024] Open
Abstract
Sarcopenia, a condition characterized by muscle weakness and mass loss, poses significant risks of accidents and complications. Traditional diagnostic methods often rely on physical function measurements like handgrip strength which can be challenging for affected patients, including those with stroke. To address these challenges, we propose a novel sarcopenia diagnosis model utilizing stimulated muscle contraction signals captured via wearable devices. Our approach achieved impressive results, with an accuracy of 93% and 100% in sarcopenia classification for male and female stroke patients, respectively. These findings underscore the significance of our method in diagnosing sarcopenia among stroke patients, offering a non-invasive and accessible solution.
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Affiliation(s)
- Yerim Ji
- Department of AI Research, EXOSYSTEMS, Seongnam, Korea
| | - Mi-Jeong Yoon
- Department of Rehabilitation Medicine, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kwangsub Song
- Department of AI Research, EXOSYSTEMS, Seongnam, Korea
| | - Sangui Choi
- Department of AI Research, EXOSYSTEMS, Seongnam, Korea
| | - Hooman Lee
- Department of AI Research, EXOSYSTEMS, Seongnam, Korea
| | - Ji Yoon Jung
- Department of Rehabilitation Medicine, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seungyup Song
- Department of Rehabilitation Medicine, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Ilsoo Kim
- Biomechanics Research and Development Center, Rhin Rehabilitation Hospital, Yongin, Korea
| | - Jae Yi Kim
- Biomechanics Research and Development Center, Rhin Rehabilitation Hospital, Yongin, Korea
| | - Sun Im
- Department of Rehabilitation Medicine, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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20
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Diallo TD, Blessing AIL, Ihorst G, Möller MD, Jungmann PM, Bamberg F, Herget G, Wäsch R, Engelhardt M, Neubauer J. Myosteatosis in multiple myeloma: a key determinant of survival beyond sarcopenia. Skeletal Radiol 2024:10.1007/s00256-024-04735-y. [PMID: 38940940 DOI: 10.1007/s00256-024-04735-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 06/03/2024] [Accepted: 06/05/2024] [Indexed: 06/29/2024]
Abstract
OBJECTIVE Fatty infiltration of skeletal muscle (Myosteatosis) is associated with increased frailty, decreased muscle and mobility function, which seems fairly prevalent in multiple myeloma (MM) patients. This study aimed to determine the prognostic value of myosteatosis assessed by CT for progression-free survival (PFS) and overall survival (OS). MATERIALS AND METHODS This IRB-approved cohort study included patients with newly diagnosed MM who were treated at a single university hospital and received CT at baseline. Geriatric assessment was performed via International Myeloma Working Group frailty score and Revised Myeloma Comorbidity Index. Myosteatosis was determined through measurement of paravertebral muscle radiodensity. Statistical analyses included uni- and multivariable Cox proportional hazard models and the Kaplan-Meier-method. RESULTS A total of 226 newly diagnosed MM patients (median age: 65 years [range: 29-89], 63% males, mean BMI: 25 [14-42]) were analyzed. The prevalence of myosteatosis was 51%. Muscle radiodensity was significantly decreased in individuals with International Staging System stage III vs. I (p < 0.001), indicating higher fatty muscle infiltration in patients with advanced disease. Both PFS and OS were significantly decreased in patients with myosteatosis (PFS: median 32.0 months (95% CI 20.5.5-42.2) vs. 66.4 months without myosteatosis (95% CI 42.5-not reached), p < .001); OS: median 58.6 (95% CI 51.3-90.2) vs. not reached, p < .001). Myosteatosis remained an independent predictor of OS in multivariable analyses (HR: 1.98; 95%-CI: 1.20-3.27). CONCLUSION Myosteatosis seems fairly prevalent in patients with newly diagnosed MM and associated with impaired overall survival. Prospective clinical trials are required to better understand the role of myosteatosis in MM patients.
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Affiliation(s)
- Thierno D Diallo
- Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
| | - Ariane Irma Luise Blessing
- Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany
| | - Gabriele Ihorst
- Clinical Trials Unit, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Mandy Deborah Möller
- Department of Medicine I Hematology and Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Comprehensive Cancer Center Freiburg (CCCF), University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Pia M Jungmann
- Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany
| | - Fabian Bamberg
- Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany
| | - Georg Herget
- Department of Orthopaedics and Trauma Surgery, Faculty of Medicine, Medical Center - University of Freiburg, Freiburg, Germany
| | - Ralph Wäsch
- Department of Medicine I Hematology and Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Comprehensive Cancer Center Freiburg (CCCF), University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Monika Engelhardt
- Department of Medicine I Hematology and Oncology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Comprehensive Cancer Center Freiburg (CCCF), University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Jakob Neubauer
- Department of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany
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21
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Zhang FM, Wu HF, Wang KF, Yu DY, Zhang XZ, Ren Q, Chen WZ, Lin F, Yu Z, Zhuang CL. Transcriptome profiling of fast/glycolytic and slow/oxidative muscle fibers in aging and obesity. Cell Death Dis 2024; 15:459. [PMID: 38942747 PMCID: PMC11213941 DOI: 10.1038/s41419-024-06851-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 06/18/2024] [Accepted: 06/20/2024] [Indexed: 06/30/2024]
Abstract
Aging and obesity pose significant threats to public health and are major contributors to muscle atrophy. The trends in muscle fiber types under these conditions and the transcriptional differences between different muscle fiber types remain unclear. Here, we demonstrate distinct responses of fast/glycolytic fibers and slow/oxidative fibers to aging and obesity. We found that in muscles dominated by oxidative fibers, the proportion of oxidative fibers remains unchanged during aging and obesity. However, in muscles dominated by glycolytic fibers, despite the low content of oxidative fibers, a significant decrease in proportion of oxidative fibers was observed. Consistently, our study uncovered that during aging and obesity, fast/glycolytic fibers specifically increased the expression of genes associated with muscle atrophy and inflammation, including Dkk3, Ccl8, Cxcl10, Cxcl13, Fbxo32, Depp1, and Chac1, while slow/oxidative fibers exhibit elevated expression of antioxidant protein Nqo-1 and downregulation of Tfrc. Additionally, we noted substantial differences in the expression of calcium-related signaling pathways between fast/glycolytic fibers and slow/oxidative fibers in response to aging and obesity. Treatment with a calcium channel inhibitor thapsigargin significantly increased the abundance of oxidative fibers. Our study provides additional evidence to support the transcriptomic differences in muscle fiber types under pathophysiological conditions, thereby establishing a theoretical basis for modulating muscle fiber types in disease treatment.
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Affiliation(s)
- Feng-Min Zhang
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hao-Fan Wu
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ke-Fan Wang
- Department of Orthopaedic Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Key Laboratory of Musculoskeletal System Degeneration and Regeneration Translational Research of Zhejiang Province, Hangzhou, China
| | - Ding-Ye Yu
- Department of General Surgery, Huadong Hospital, Fudan University, Shanghai, China
| | - Xian-Zhong Zhang
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qi Ren
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wei-Zhe Chen
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Feng Lin
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhen Yu
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
| | - Cheng-Le Zhuang
- Department of Gastrointestinal Surgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
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22
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Espino-Gonzalez E, Dalbram E, Mounier R, Gondin J, Farup J, Jessen N, Treebak JT. Impaired skeletal muscle regeneration in diabetes: From cellular and molecular mechanisms to novel treatments. Cell Metab 2024; 36:1204-1236. [PMID: 38490209 DOI: 10.1016/j.cmet.2024.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 01/10/2024] [Accepted: 02/22/2024] [Indexed: 03/17/2024]
Abstract
Diabetes represents a major public health concern with a considerable impact on human life and healthcare expenditures. It is now well established that diabetes is characterized by a severe skeletal muscle pathology that limits functional capacity and quality of life. Increasing evidence indicates that diabetes is also one of the most prevalent disorders characterized by impaired skeletal muscle regeneration, yet underlying mechanisms and therapeutic treatments remain poorly established. In this review, we describe the cellular and molecular alterations currently known to occur during skeletal muscle regeneration in people with diabetes and animal models of diabetes, including its associated comorbidities, e.g., obesity, hyperinsulinemia, and insulin resistance. We describe the role of myogenic and non-myogenic cell types on muscle regeneration in conditions with or without diabetes. Therapies for skeletal muscle regeneration and gaps in our knowledge are also discussed, while proposing future directions for the field.
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Affiliation(s)
- Ever Espino-Gonzalez
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Emilie Dalbram
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Rémi Mounier
- Institut NeuroMyoGène, Unité Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, CNRS UMR 5261, Inserm U1315, Univ Lyon, Lyon, France
| | - Julien Gondin
- Institut NeuroMyoGène, Unité Physiopathologie et Génétique du Neurone et du Muscle, Université Claude Bernard Lyon 1, CNRS UMR 5261, Inserm U1315, Univ Lyon, Lyon, France
| | - Jean Farup
- Department of Biomedicine, Aarhus University, Aarhus 8000, Denmark; Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus 8200, Denmark
| | - Niels Jessen
- Department of Biomedicine, Aarhus University, Aarhus 8000, Denmark; Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus 8200, Denmark; Department of Clinical Pharmacology, Aarhus University Hospital, Aarhus 8200, Denmark
| | - Jonas T Treebak
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark.
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23
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Zamora Z, Lui LY, Sparks LM, Justice J, Lyles M, Gentle L, Gregory H, Yeo RX, Kershaw EE, Stefanovic-Racic M, Newman AB, Kritchevsky S, Toledo FGS. Percutaneous biopsies of skeletal muscle and adipose tissue in individuals older than 70: methods and outcomes in the Study of Muscle, Mobility and Aging (SOMMA). GeroScience 2024; 46:3419-3428. [PMID: 38315316 PMCID: PMC11009187 DOI: 10.1007/s11357-024-01087-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 01/26/2024] [Indexed: 02/07/2024] Open
Abstract
Biopsies of muscle and adipose tissue (AT) are useful tools to gain insights into the aging processes in these tissues. However, they are invasive procedures and their risk/benefit profile in older adults can be altered by sarcopenia, frailty, poor healing, and multimorbidity. Their success rates, safety, and tolerability in a geriatric population have not been reported in detail. Investigators in the Study of Muscle, Mobility, and Aging (SOMMA) performed biopsies of muscle and AT in older adults and prospectively collected data on biopsy success rates, safety, and tolerability. We report here the methods and outcomes of these two procedures. In total, 861 participants (aged 70-94) underwent percutaneous biopsies of the Vastus lateralis muscle with a Bergstrom needle. A subset (n = 241) also underwent percutaneous biopsies of the abdominal subcutaneous AT with the tumescent liposuction technique. Success rate was assessed by the percentage of biopsies yielding adequate specimens for analyses; tolerability by pain scores; and safety by frequency of adverse events. All data were prospectively collected. The overall muscle biopsy success rate was 97.1% and was modestly lower in women. The AT biopsy success rate was 95.9% and slightly lower in men. Minimal or no pain was reported in 68% of muscle biopsies and in 83% of AT biopsies. Adverse events occurred in 2.67% of muscle biopsies and 4.15% of AT biopsies. None was serious. In older adults, percutaneous muscle biopsies and abdominal subcutaneous AT biopsies have an excellent safety profile, often achieve adequate tissue yields for analyses, and are well tolerated.
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Affiliation(s)
- Zeke Zamora
- Internal Medicine Section On Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Li-Yung Lui
- Research Institute, California Pacific Medical Center, San Francisco, CA, USA
| | - Lauren M Sparks
- Translational Research Institute, AdventHealth, Orlando, FL, USA
| | - Jamie Justice
- Internal Medicine Section On Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Mary Lyles
- Internal Medicine Section On Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Landon Gentle
- Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Heather Gregory
- Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Reichelle X Yeo
- Translational Research Institute, AdventHealth, Orlando, FL, USA
| | - Erin E Kershaw
- Division of Endocrinology and Metabolism, Dept. of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street BST-W1055, Pittsburgh, PA, 15261, USA
| | - Maja Stefanovic-Racic
- Division of Endocrinology and Metabolism, Dept. of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street BST-W1055, Pittsburgh, PA, 15261, USA
| | - Anne B Newman
- Dept. of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Stephen Kritchevsky
- Internal Medicine Section On Gerontology and Geriatrics, Wake Forest School of Medicine, Winston-Salem, NC, USA
- Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Frederico G S Toledo
- Division of Endocrinology and Metabolism, Dept. of Medicine, School of Medicine, University of Pittsburgh, 200 Lothrop Street BST-W1055, Pittsburgh, PA, 15261, USA.
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24
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Tian J, Song M, Cho KJ, Lee HY, Ju SH, Lim JR, Nga HT, Nguyen TL, Moon JS, Jang HJ, Hwang JM, Yi HS. Differences in Type 2 Fiber Composition in the Vastus Lateralis and Gluteus Maximus of Patients with Hip Fractures. Endocrinol Metab (Seoul) 2024; 39:521-530. [PMID: 38858821 PMCID: PMC11220211 DOI: 10.3803/enm.2024.1935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 03/15/2024] [Accepted: 03/21/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGRUOUND Aging leads to sarcopenia, which is characterized by reduced muscle mass and strength. Many factors, including altered muscle protein turnover, diminished neuromuscular function, hormonal changes, systemic inflammation, and the structure and composition of muscle fibers, play a crucial role in age-related muscle decline. This study explored differences in muscle fiber types contributing to overall muscle function decline in aging, focusing on individuals with hip fractures from falls. METHODS A pilot study at Chungnam National University Hospital collected muscle biopsies from hip fracture patients aged 20 to 80 undergoing surgical treatment. Muscle biopsies from the vastus lateralis and gluteus maximus were obtained during hip arthroplasty or internal fixation. Handgrip strength, calf and thigh circumference, and bone mineral density were evaluated in individuals with hip fractures from falls. We analyzed the relationships between each clinical characteristic and muscle fiber type. RESULTS In total, 26 participants (mean age 67.9 years, 69.2% male) were included in this study. The prevalence of sarcopenia was 53.8%, and that of femoral and lumbar osteoporosis was 19.2% and 11.5%, respectively. Vastus lateralis analysis revealed an age-related decrease in type IIx fibers, a higher proportion of type IIa fibers in women, and an association between handgrip strength and type IIx fibers in men. The gluteus maximus showed no significant correlations with clinical parameters. CONCLUSION This study identified complex associations between age, sex, handgrip strength, and muscle fiber composition in hip fracture patients, offering insights crucial for targeted interventions combating age-related muscle decline and improving musculoskeletal health.
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Affiliation(s)
- Jingwen Tian
- Laboratory of Endocrinology and Immune System, Chungnam National University College of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| | - Minchul Song
- Department of Internal Medicine, Chungnam National University College of Medicine, Daejeon, Korea
| | - Kyu Jeong Cho
- Laboratory of Endocrinology and Immune System, Chungnam National University College of Medicine, Daejeon, Korea
| | - Ho Yeop Lee
- Laboratory of Endocrinology and Immune System, Chungnam National University College of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| | - Sang Hyeon Ju
- Department of Internal Medicine, Chungnam National University College of Medicine, Daejeon, Korea
| | - Jung Ryul Lim
- Department of Internal Medicine, Chungnam National University College of Medicine, Daejeon, Korea
| | - Ha Thi Nga
- Laboratory of Endocrinology and Immune System, Chungnam National University College of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| | - Thi Linh Nguyen
- Laboratory of Endocrinology and Immune System, Chungnam National University College of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| | - Ji Sun Moon
- Laboratory of Endocrinology and Immune System, Chungnam National University College of Medicine, Daejeon, Korea
| | - Hyo Ju Jang
- Laboratory of Endocrinology and Immune System, Chungnam National University College of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
| | - Jung-Mo Hwang
- Department of Orthopedics, Chungnam National University Hospital, Daejeon, Korea
| | - Hyon-Seung Yi
- Laboratory of Endocrinology and Immune System, Chungnam National University College of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University College of Medicine, Daejeon, Korea
- Department of Internal Medicine, Chungnam National University College of Medicine, Daejeon, Korea
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25
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Kobayashi S, Morino K, Okamoto T, Tanaka M, Ida S, Ohashi N, Murata K, Yanagimachi T, Sakai J, Maegawa H, Fujita Y, Kume S. Acetate derived from the intestinal tract has a critical role in maintaining skeletal muscle mass and strength in mice. Physiol Rep 2024; 12:e16047. [PMID: 38837588 PMCID: PMC11150057 DOI: 10.14814/phy2.16047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 04/26/2024] [Accepted: 04/26/2024] [Indexed: 06/07/2024] Open
Abstract
Acetate is a short-chain fatty acid (SCFA) that is produced by microbiota in the intestinal tract. It is an important nutrient for the intestinal epithelium, but also has a high plasma concentration and is used in the various tissues. Acetate is involved in endurance exercise, but its role in resistance exercise remains unclear. To investigate this, mice were administered either multiple antibiotics with and without oral acetate supplementation or fed a low-fiber diet. Antibiotic treatment for 2 weeks significantly reduced grip strength and the cross-sectional area (CSA) of muscle fiber compared with the control group. Intestinal concentrations of SCFAs were reduced in the antibiotic-treated group. Oral administration of acetate with antibiotics prevented antibiotic-induced weakness of skeletal muscle and reduced CSA of muscle fiber. Similarly, a low-fiber diet for 1 year significantly reduced the CSA of muscle fiber and fecal and plasma acetate concentrations. To investigate the role of acetate as an energy source, acetyl-CoA synthase 2 knockout mice were used. These mice had a shorter lifespan, reduced skeletal muscle mass and smaller CSA of muscle fiber than their wild type littermates. In conclusion, acetate derived from the intestinal microbiome can contribute to maintaining skeletal muscle performance.
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Affiliation(s)
- Saki Kobayashi
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
| | - Katsutaro Morino
- Institutional Research Office, Shiga University of Medical ScienceOtsuJapan
- Present address:
Department of Diabetes and Endocrine MedicineKagoshima University Graduate School of Medical and Dental SciencesKagoshima‐cityJapan
| | - Takuya Okamoto
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
| | - Mitsumi Tanaka
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
- CMIC Pharma ScienceNishiwakiJapan
| | - Shogo Ida
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
| | - Natsuko Ohashi
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
| | - Koichiro Murata
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
| | - Tsuyoshi Yanagimachi
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
- Present address:
Department of Endocrinology and Metabolism, Graduate School of MedicineHirosaki UniversityHirosaki‐sityJapan
| | - Juro Sakai
- Division of Molecular Physiology and MetabolismTohoku University Graduate School of MedicineSendaiJapan
- Division of Metabolic Medicine, Research Center for Advanced Science and TechnologyThe University of TokyoTokyoJapan
| | - Hiroshi Maegawa
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
- Present address:
Yasu City HospitalYasu‐cityJapan
| | - Yukihiro Fujita
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
- Present address:
Department of Endocrinology and Metabolism, Graduate School of MedicineHirosaki UniversityHirosaki‐sityJapan
| | - Shinji Kume
- Division of Endocrinology and Metabolism, Department of MedicineShiga University of Medical ScienceOtsuJapan
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26
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Padilla CJ, Harris H, Volek JS, Clark BC, Arnold WD. Effects of a ketogenic diet on motor function and motor unit number estimation in aged C57BL/6 mice. J Nutr Health Aging 2024; 28:100219. [PMID: 38582033 DOI: 10.1016/j.jnha.2024.100219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 03/15/2024] [Accepted: 03/22/2024] [Indexed: 04/08/2024]
Abstract
OBJECTIVE Pathological, age-related loss of muscle function, commonly referred to as sarcopenia, contributes to loss of mobility, impaired independence, as well as increased risk of adverse health events. Sarcopenia has been attributed to changes in both neural and muscular integrity during aging. Current treatment options are primarily limited to exercise and dietary protein fortification, but the therapeutic impact of these approaches are often inadequate. Prior work has suggested that a ketogenic diet (KD) might improve healthspan and lifespan in aging mice. Thus, we sought to investigate the effects of a KD on neuromuscular indices of sarcopenia in aged C57BL/6 mice. DESIGN A randomized, controlled pre-clinical experiment consisting of longitudinal assessments performed starting at 22-months of age (baseline) as well as 2, 6 and 10 weeks after the start of a KD vs. regular chow intervention. SETTING Preclinical laboratory study. SAMPLE SIZE Thirty-six 22-month-old mice were randomized into 2 dietary groups: KD [n = 22 (13 female and 9 male)], and regular chow [n = 15 (7 female and 8 male)]. MEASUREMENTS Measures included body mass, hindlimb and all limb grip strength, rotarod for motor performance, plantarflexion muscle contractility, motor unit number estimations (MUNE), and repetitive nerve stimulation (RNS) as an index of neuromuscular junction transmission efficacy recorded from the gastrocnemius muscle. At end point, muscle wet weight and blood samples were collected to assess blood beta-hydroxybutyrate levels. STATISTICAL ANALYSIS Primary analyses were two-way mixed effects ANOVA (diet and time × diet) to determine the effect of a KD on indices of motor function (grip, rotarod) and indices of motor unit (MUNE) and muscle (contractility) function. RESULTS Beta-hydroxybutyrate (BHB) was significantly higher at 10 weeks in mice on a KD vs control group (0.83 ± 0.44 mmol/l versus 0.42 ± 0.21 mmol/l, η2 = 0.265, unpaired t-test, p = 0.0060). Mice on the KD intervention demonstrated significantly increased hindlimb grip strength (diet, p = 0.0001; time × diet, p = 0.0030), all limb grip strength (diet, p = 0.0005; time × diet, p = 0.0523), and rotarod latency to fall (diet, p = 0.0126; time × diet, p = 0.0021). Mice treated with the KD intervention also demonstrated increased MUNE (diet, p = 0.0465; time × diet, p = 0.0064), but no difference in muscle contractility (diet, p = 0.5248; time × diet, p = 0.5836) or RNS (diet, p = 0.3562; time × diet, p = 0.9871). CONCLUSION KD intervention improved neuromuscular and motor function in aged mice. This pre-clinical work suggests that further research is needed to assess the efficacy and physiological effects of a KD on indices of sarcopenia.
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Affiliation(s)
- Carlos J Padilla
- Department of Kinesiology, University of Wisconsin - Madison, Madison, WI, USA.
| | - Hallie Harris
- Department of Plastic and Reconstructive Surgery, The Ohio State University, Columbus, OH, USA.
| | - Jeff S Volek
- Department of Human Sciences, The Ohio State University, Columbus, OH, USA.
| | - Brian C Clark
- Department of Biomedical Sciences, Ohio University, Athens, OH, USA; Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH, USA.
| | - W David Arnold
- University of Missouri, School of Medicine, Columbia, MO, USA; NextGen Precision Health Initiative, University of Missouri System, Columbia, MO, USA.
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27
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Lima MCDAM, Zazula MF, Martins LF, Carvalhal SR, Guimarães ATB, Fernandes LC, Naliwaiko K. How soon do metabolic alterations and oxidative distress precede the reduction of muscle mass and strength in Wistar rats in aging process? Biogerontology 2024; 25:491-506. [PMID: 38064115 DOI: 10.1007/s10522-023-10078-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 10/30/2023] [Indexed: 06/01/2024]
Abstract
Here we investigate metabolic changes, the antioxidant system and the accumulation of oxidative damage in muscles with different fiber types during the aging process in Wistar rats and try to map how sooner the changes occur. To do so, 30 male Wistar rats were submitted to behavioral evaluation to determine voluntary strength in the 11, 15, and 19 month old rats, measuring the energy metabolism, antioxidant system, oxidative damage and structure in the soleus and extensor digitorum longus muscles. We detected structural and metabolic changes in both muscles, especially in the EDL of 15 month old rats and in the soleus of 19 month old rats. In the 15 month old rats, there was a reduction in the cross-sectional area of the fibers, and a reduction in the proportion of type I fibers, accompanied by an increase in fiber density and the amount of type IIA fibers. This change in the fiber profile was followed by an increase in the activity of anaerobic metabolism enzymes, suggesting a reduction in the oxidative capacity of the muscle. In addition, there was an increase in the rate of lipid peroxidation, accompanied by a reduced antioxidant capacity. In the 19 month old rats, these disturbances got stronger. In summary, the present study demonstrated that before functional disturbances, there was an accumulation of oxidative damage and structural changes in the skeletal muscle beginning at 15 months old in the EDL and the soleus only in the biochemical parameters. Therefore, the metabolic alterations occurred at 15 months old and not before.
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Affiliation(s)
- Malu Cristina de Araújo Montoro Lima
- Laboratório de Plasticidade Morfofuncional, Departamento de Biologia Celular, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco Heráclito dos Santos, 100, Jardim das Américas, Curitiba, PR, 81530-900, Brazil
| | - Matheus Felipe Zazula
- Laboratório de Plasticidade Morfofuncional, Departamento de Biologia Celular, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco Heráclito dos Santos, 100, Jardim das Américas, Curitiba, PR, 81530-900, Brazil
| | - Luiz Fernando Martins
- Laboratório de Plasticidade Morfofuncional, Departamento de Biologia Celular, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco Heráclito dos Santos, 100, Jardim das Américas, Curitiba, PR, 81530-900, Brazil
| | - Stephanie Rubiane Carvalhal
- Laboratório de Metabolismo Celular, Departamento de Fisiologia, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco Heráclito dos Santos, 100, Jardim das Américas, Curitiba, PR, 81530-900, Brazil
| | - Ana Tereza Bittencourt Guimarães
- Laboratório de Investigações Biológicas, Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Jardim Universitário, Cascavel, PR, 85819-110, Brazil
| | - Luiz Claudio Fernandes
- Laboratório de Metabolismo Celular, Departamento de Fisiologia, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco Heráclito dos Santos, 100, Jardim das Américas, Curitiba, PR, 81530-900, Brazil
| | - Katya Naliwaiko
- Laboratório de Plasticidade Morfofuncional, Departamento de Biologia Celular, Setor de Ciências Biológicas, Universidade Federal do Paraná, Avenida Coronel Francisco Heráclito dos Santos, 100, Jardim das Américas, Curitiba, PR, 81530-900, Brazil.
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28
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de Jong JCBC, Caspers MPM, Worms N, Keijzer N, Kleemann R, Menke AL, Nieuwenhuizen AG, Keijer J, Verschuren L, van den Hoek AM. Translatability of mouse muscle-aging for humans: the role of sex. GeroScience 2024; 46:3341-3360. [PMID: 38265577 PMCID: PMC11009184 DOI: 10.1007/s11357-024-01082-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/11/2024] [Indexed: 01/25/2024] Open
Abstract
Muscle-aging drives sarcopenia and is a major public health issue. Mice are frequently used as a model for human muscle-aging, however, research investigating their translational value is limited. In addition, mechanisms underlying muscle-aging may have sex-specific features in humans, but it is not yet assessed whether these are recapitulated in mice. Here, we studied the effects of aging on a functional, histological and transcriptional level at multiple timepoints in male and female mice (4, 17, 21 and 25 months), with particular emphasis on sex-differences. The effects of natural aging on the transcriptome of quadriceps muscle were compared to humans on pathway level. Significant loss of muscle mass occurred late, at 25 months, in both male (-17%, quadriceps) and female mice (-10%, quadriceps) compared to young control mice. Concomitantly, we found in female, but not male mice, a slower movement speed in the aged groups compared to the young mice (P < 0.001). Consistently, weighted gene co-expression network analysis revealed a stronger association between the aging-related reduction of movement and aging-related changes in muscle transcriptome of female compared to male mice (P < 0.001). In male, but not female mice, major distinctive aging-related changes occurred in the last age group (25 months), which highlights the necessity for careful selection of age using mice as a muscle-aging model. Furthermore, contrasting to humans, more aging-related changes were found in the muscle transcriptome of male mice compared to female mice (4090 vs. 2285 differentially expressed genes at 25 months, respectively). Subsequently, male mice recapitulated more muscle-aging related pathways characteristic for both male and female humans. In conclusion, our data show that sex has a critical effect on the mouse muscle-aging trajectory, although these do not necessarily reflect sex differences observed in the human muscle-aging trajectory.
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Affiliation(s)
- Jelle C B C de Jong
- Department of Metabolic Health Research, The Netherlands Organization for Applied Scientific Research (TNO), Leiden, The Netherlands.
- Human and Animal Physiology, Wageningen University, Wageningen, The Netherlands.
| | - Martien P M Caspers
- Department of Microbiology and Systems Biology, The Netherlands Organization for Applied Scientific Research (TNO), Leiden, The Netherlands
| | - Nicole Worms
- Department of Metabolic Health Research, The Netherlands Organization for Applied Scientific Research (TNO), Leiden, The Netherlands
| | - Nanda Keijzer
- Department of Metabolic Health Research, The Netherlands Organization for Applied Scientific Research (TNO), Leiden, The Netherlands
| | - Robert Kleemann
- Department of Metabolic Health Research, The Netherlands Organization for Applied Scientific Research (TNO), Leiden, The Netherlands
| | - Aswin L Menke
- Department of Metabolic Health Research, The Netherlands Organization for Applied Scientific Research (TNO), Leiden, The Netherlands
| | | | - Jaap Keijer
- Human and Animal Physiology, Wageningen University, Wageningen, The Netherlands
| | - Lars Verschuren
- Department of Microbiology and Systems Biology, The Netherlands Organization for Applied Scientific Research (TNO), Leiden, The Netherlands
| | - Anita M van den Hoek
- Department of Metabolic Health Research, The Netherlands Organization for Applied Scientific Research (TNO), Leiden, The Netherlands
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29
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Liu Z, Guo Y, Zheng C. Type 2 diabetes mellitus related sarcopenia: a type of muscle loss distinct from sarcopenia and disuse muscle atrophy. Front Endocrinol (Lausanne) 2024; 15:1375610. [PMID: 38854688 PMCID: PMC11157032 DOI: 10.3389/fendo.2024.1375610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 04/05/2024] [Indexed: 06/11/2024] Open
Abstract
Muscle loss is a significant health concern, particularly with the increasing trend of population aging, and sarcopenia has emerged as a common pathological process of muscle loss in the elderly. Currently, there has been significant progress in the research on sarcopenia, including in-depth analysis of the mechanisms underlying sarcopenia caused by aging and the development of corresponding diagnostic criteria, forming a relatively complete system. However, as research on sarcopenia progresses, the concept of secondary sarcopenia has also been proposed. Due to the incomplete understanding of muscle loss caused by chronic diseases, there are various limitations in epidemiological, basic, and clinical research. As a result, a comprehensive concept and diagnostic system have not yet been established, which greatly hinders the prevention and treatment of the disease. This review focuses on Type 2 Diabetes Mellitus (T2DM)-related sarcopenia, comparing its similarities and differences with sarcopenia and disuse muscle atrophy. The review show significant differences between the three muscle-related issues in terms of pathological changes, epidemiology and clinical manifestations, etiology, and preventive and therapeutic strategies. Unlike sarcopenia, T2DM-related sarcopenia is characterized by a reduction in type I fibers, and it differs from disuse muscle atrophy as well. The mechanism involving insulin resistance, inflammatory status, and oxidative stress remains unclear. Therefore, future research should further explore the etiology, disease progression, and prognosis of T2DM-related sarcopenia, and develop targeted diagnostic criteria and effective preventive and therapeutic strategies to better address the muscle-related issues faced by T2DM patients and improve their quality of life and overall health.
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Affiliation(s)
- Zhenchao Liu
- Institute of Integrative Medicine, Qingdao University, Qingdao, Shandong, China
| | - Yunliang Guo
- Institute of Integrative Medicine, Qingdao University, Qingdao, Shandong, China
| | - Chongwen Zheng
- Department of Neurology, The 2 Affiliated Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian, China
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30
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Zeng Y, He X, Peng X, Zhao L, Yin C, Mao S. Combined Nutrition with Exercise: Fueling the Fight Against Sarcopenia Through a Bibliometric Analysis and Review. Int J Gen Med 2024; 17:1861-1876. [PMID: 38715745 PMCID: PMC11075762 DOI: 10.2147/ijgm.s462594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 04/21/2024] [Indexed: 05/24/2024] Open
Abstract
Objective This bibliometric analysis and review aimed to examine the current research status and trends in the combination of nutrition and exercise training for sarcopenia. Additionally, it sought to provide researchers with future research directions in this field. Methods Relevant publications were obtained from the Web of Science Core Collection (WoSCC) database, covering the period from January 1995 to October 2023. The collected publications were analyzed using CiteSpace, VOSviewer, Bibliometrix, and Review Manager. Results Out of the 2528 retrieved publications, the United States emerged as the leading contributor in terms of publication volume. The University of Texas System was identified as the most productive institution. Luc J C van Loon emerged as the most published author in this field. Analysis of keywords revealed recent hot topics and emerging areas of interest, such as "gut microbiota" and "mechanisms". Upon further evaluation, resistance training (RT) and protein supplementation were identified as the most commonly employed and effective methods. Conclusion RT and protein supplementation are widely recognized as effective strategies. Future research should focus on investigating the molecular aspects of sarcopenia. Moreover, the potential therapeutic role of gut microbiota in sarcopenia requires further comprehensive investigation in human subjects to establish its correlation.
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Affiliation(s)
- Yixian Zeng
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing, 100084, People’s Republic of China
| | - Xingfei He
- Wuxi Huishan District Rehabilitation Hospital, Wuxi, 214001, People’s Republic of China
| | - Xinchun Peng
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing, 100084, People’s Republic of China
| | - Li Zhao
- School of Sports Science, Beijing Sport University, Beijing, 100084, People’s Republic of China
| | - Chengqian Yin
- Department of Interventional Center of Valvular Heart Disease, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Disease, Beijing, 100029, People’s Republic of China
| | - Shanshan Mao
- School of Sports Medicine and Rehabilitation, Beijing Sport University, Beijing, 100084, People’s Republic of China
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31
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Salvadori L, Paiella M, Castiglioni B, Belladonna ML, Manenti T, Ercolani C, Cornioli L, Clemente N, Scircoli A, Sardella R, Tensi L, Astolfi A, Barreca ML, Chiappalupi S, Gentili G, Bosetti M, Sorci G, Filigheddu N, Riuzzi F. Equisetum arvense standardized dried extract hinders age-related osteosarcopenia. Biomed Pharmacother 2024; 174:116517. [PMID: 38574619 DOI: 10.1016/j.biopha.2024.116517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/20/2024] [Accepted: 03/28/2024] [Indexed: 04/06/2024] Open
Abstract
Age-associated osteosarcopenia is an unresolved syndrome characterized by the concomitant loss of bone (osteopenia) and skeletal muscle (sarcopenia) tissues increasing falls, immobility, morbidity, and mortality. Unbalanced resorption of bone in the remodeling process and excessive protein breakdown, especially fast type II myosin heavy chain (MyHC-II) isoform and myofiber metabolic shift, are the leading causes of bone and muscle deterioration in the elderly, respectively. Equisetum arvense (EQ) is a plant traditionally recommended for many pathological conditions due to its anti-inflammatory properties. Thus, considering that a chronic low-grade inflammatory state predisposes to both osteoporosis and sarcopenia, we tested a standardized hydroalcoholic extract of EQ in in vitro models of muscle atrophy [C2C12 myotubes treated with proinflammatory cytokines (TNFα/IFNγ), excess glucocorticoids (dexamethasone), or the osteokine, receptor activator of nuclear factor kappa-B ligand (RANKL)] and osteoclastogenesis (RAW 264.7 cells treated with RANKL). We found that EQ counteracted myotube atrophy, blunting the activity of several pathways depending on the applied stimulus, and reduced osteoclast formation and activity. By in silico target fishing, IKKB-dependent nuclear factor kappa-B (NF-κB) inhibition emerges as a potential common mechanism underlying EQ's anti-atrophic effects. Consumption of EQ (500 mg/kg/day) by pre-geriatric C57BL/6 mice for 3 months translated into: i) maintenance of muscle mass and performance; ii) restrained myofiber oxidative shift; iii) slowed down age-related modifications in osteoporotic bone, significantly preserving trabecular connectivity density; iv) reduced muscle- and spleen-related inflammation. EQ can preserve muscle functionality and bone remodeling during aging, potentially valuable as a natural treatment for osteosarcopenia.
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Affiliation(s)
- Laura Salvadori
- Department of Translational Medicine, University of Piemonte Orientale, Novara 28100, Italy; Interuniversity Institute of Myology (IIM), Perugia 06132, Italy
| | - Martina Paiella
- Department of Translational Medicine, University of Piemonte Orientale, Novara 28100, Italy; Interuniversity Institute of Myology (IIM), Perugia 06132, Italy
| | - Beatrice Castiglioni
- Department Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | | | | | | | - Luca Cornioli
- Laboratori Biokyma srl, Anghiari, Arezzo 52031, Italy
| | - Nausicaa Clemente
- Department of Health Sciences and Interdisciplinary Research Center of Autoimmune Diseases (IRCAD), University of Piemonte Orientale, Novara 28100, Italy
| | - Andrea Scircoli
- Department of Translational Medicine, University of Piemonte Orientale, Novara 28100, Italy; Interuniversity Institute of Myology (IIM), Perugia 06132, Italy
| | - Roccaldo Sardella
- Department of Pharmaceutical Sciences, University of Perugia, Perugia 06123, Italy
| | - Leonardo Tensi
- Department of Pharmaceutical Sciences, University of Perugia, Perugia 06123, Italy
| | - Andrea Astolfi
- Department of Pharmaceutical Sciences, University of Perugia, Perugia 06123, Italy
| | | | - Sara Chiappalupi
- Interuniversity Institute of Myology (IIM), Perugia 06132, Italy; Department of Medicine and Surgery, University of Perugia, Perugia 06132, Italy
| | - Giulia Gentili
- Interuniversity Institute of Myology (IIM), Perugia 06132, Italy; Department of Medicine and Surgery, University of Perugia, Perugia 06132, Italy
| | - Michela Bosetti
- Department Pharmaceutical Sciences, University of Piemonte Orientale, Novara, Italy
| | - Guglielmo Sorci
- Interuniversity Institute of Myology (IIM), Perugia 06132, Italy; Department of Medicine and Surgery, University of Perugia, Perugia 06132, Italy
| | - Nicoletta Filigheddu
- Department of Translational Medicine, University of Piemonte Orientale, Novara 28100, Italy; Interuniversity Institute of Myology (IIM), Perugia 06132, Italy
| | - Francesca Riuzzi
- Interuniversity Institute of Myology (IIM), Perugia 06132, Italy; Department of Medicine and Surgery, University of Perugia, Perugia 06132, Italy.
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32
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Kedlian VR, Wang Y, Liu T, Chen X, Bolt L, Tudor C, Shen Z, Fasouli ES, Prigmore E, Kleshchevnikov V, Pett JP, Li T, Lawrence JEG, Perera S, Prete M, Huang N, Guo Q, Zeng X, Yang L, Polański K, Chipampe NJ, Dabrowska M, Li X, Bayraktar OA, Patel M, Kumasaka N, Mahbubani KT, Xiang AP, Meyer KB, Saeb-Parsy K, Teichmann SA, Zhang H. Human skeletal muscle aging atlas. NATURE AGING 2024; 4:727-744. [PMID: 38622407 PMCID: PMC11108788 DOI: 10.1038/s43587-024-00613-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 03/19/2024] [Indexed: 04/17/2024]
Abstract
Skeletal muscle aging is a key contributor to age-related frailty and sarcopenia with substantial implications for global health. Here we profiled 90,902 single cells and 92,259 single nuclei from 17 donors to map the aging process in the adult human intercostal muscle, identifying cellular changes in each muscle compartment. We found that distinct subsets of muscle stem cells exhibit decreased ribosome biogenesis genes and increased CCL2 expression, causing different aging phenotypes. Our atlas also highlights an expansion of nuclei associated with the neuromuscular junction, which may reflect re-innervation, and outlines how the loss of fast-twitch myofibers is mitigated through regeneration and upregulation of fast-type markers in slow-twitch myofibers with age. Furthermore, we document the function of aging muscle microenvironment in immune cell attraction. Overall, we present a comprehensive human skeletal muscle aging resource ( https://www.muscleageingcellatlas.org/ ) together with an in-house mouse muscle atlas to study common features of muscle aging across species.
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Affiliation(s)
- Veronika R Kedlian
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Yaning Wang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Tianliang Liu
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xiaoping Chen
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Liam Bolt
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Catherine Tudor
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Zhuojian Shen
- Department of Thoracic Surgery, Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, China
| | - Eirini S Fasouli
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Elena Prigmore
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | | | - Jan Patrick Pett
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Tong Li
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - John E G Lawrence
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Shani Perera
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Martin Prete
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Ni Huang
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Qin Guo
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xinrui Zeng
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Lu Yang
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Krzysztof Polański
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Nana-Jane Chipampe
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Monika Dabrowska
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Xiaobo Li
- Core Facilities for Medical Science, Sun Yat-sen University, Guangzhou, China
| | - Omer Ali Bayraktar
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Minal Patel
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Natsuhiko Kumasaka
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Krishnaa T Mahbubani
- Department of Surgery, University of Cambridge, Cambridge, UK
- Collaborative Biorepository for Translational Medicine (CBTM), NIHR Cambridge Biomedical Research Centre, Cambridge, UK
| | - Andy Peng Xiang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Kerstin B Meyer
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK
| | - Kourosh Saeb-Parsy
- Department of Surgery, University of Cambridge, Cambridge, UK.
- Collaborative Biorepository for Translational Medicine (CBTM), NIHR Cambridge Biomedical Research Centre, Cambridge, UK.
| | - Sarah A Teichmann
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, UK.
- Cavendish Laboratory, University of Cambridge, Cambridge, UK.
| | - Hongbo Zhang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
- Advanced Medical Technology Center, The First Affiliated Hospital, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.
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Prajapati P, Kumar A, Mangrulkar S, Chaple DR, Saraf SA, Kushwaha S. Azilsartan prevents muscle loss and fast- to slow-twitch muscle fiber shift in natural ageing sarcopenic rats. Can J Physiol Pharmacol 2024; 102:342-360. [PMID: 38118126 DOI: 10.1139/cjpp-2023-0265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Sarcopenia is a musculoskeletal disease that reduces muscle mass and strength in older individuals. The study investigates the effects of azilsartan (AZL) on skeletal muscle loss in natural sarcopenic rats. Male Sprague-Dawley rats aged 4-6 months and 18-21 months were selected as young-matched control and natural-aged (sarcopenic) rats, respectively. Rats were allocated into young and old control (YC and OC) and young and old AZL treatment (YT and OT) groups, which received vehicles and AZL (8 mg/kg, orally) for 6 weeks. Rats were then sacrificed after muscle function analysis. Serum and gastrocnemius (GN) muscles were isolated for further endpoints. AZL significantly improved muscle grip strength and antioxidant levels in sarcopenic rats. AZL also restored the levels of insulin, testosterone, and muscle biomarkers such as myostatin and creatinine kinase in sarcopenic rats. Furthermore, AZL treatment improved the cellular and ultrastructure of GN muscle and prevented the shift of type II (glycolytic) myofibers to type I (oxidative) myofibers. The results showed that AZL intervention restored protein synthesis in natural sarcopenic rats by increasing p-Akt-1 and decreasing muscle RING-finger protein-1 and tumor necrosis factor alpha immunoexpressions. In conclusion, the present findings showed that AZL could be an effective intervention in treating age-related muscle impairments.
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MESH Headings
- Animals
- Sarcopenia/prevention & control
- Sarcopenia/metabolism
- Sarcopenia/drug therapy
- Sarcopenia/pathology
- Male
- Oxadiazoles/pharmacology
- Oxadiazoles/therapeutic use
- Aging/drug effects
- Rats, Sprague-Dawley
- Rats
- Benzimidazoles/pharmacology
- Benzimidazoles/therapeutic use
- Muscle Fibers, Fast-Twitch/drug effects
- Muscle Fibers, Fast-Twitch/metabolism
- Muscle Fibers, Fast-Twitch/pathology
- Muscle Fibers, Slow-Twitch/drug effects
- Muscle Fibers, Slow-Twitch/metabolism
- Muscle Fibers, Slow-Twitch/pathology
- Muscle Strength/drug effects
- Muscle, Skeletal/drug effects
- Muscle, Skeletal/metabolism
- Muscle, Skeletal/pathology
- Proto-Oncogene Proteins c-akt/metabolism
- Myostatin/metabolism
- Antioxidants/pharmacology
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Affiliation(s)
- Priyanka Prajapati
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow 226025, India
| | - Anand Kumar
- Department of Pharmaceutical Sciences, School of Pharmaceutical Sciences, Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow 226025, India
| | - Shubhada Mangrulkar
- Department of Pharmacology, Smt. Kishoritai Bhoyar College of Pharmacy, Kamptee, Nagpur 441002, India
| | - D R Chaple
- Priyadarshini J.L. College of Pharmacy, Electronic Zone Building, MIDC Hingna Road, Nagpur 440016, India
| | - Shubhini A Saraf
- National Institute of Pharmaceutical Education & Research, Raebareli (NIPER-R), Near CRPF Base Camp, Sarojini Nagar, Lucknow 226002, India
| | - Sapana Kushwaha
- National Institute of Pharmaceutical Education & Research, Raebareli (NIPER-R), Near CRPF Base Camp, Sarojini Nagar, Lucknow 226002, India
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Elgizawy EI, Amer GS, Ali EA, Alqalashy FS, Ibrahim MM, Latif AAA, Shaban AM. Comparing the efficacy of concomitant treatment of resistance exercise and creatine monohydrate versus multiple individual therapies in age related sarcopenia. Sci Rep 2024; 14:9798. [PMID: 38684784 PMCID: PMC11058861 DOI: 10.1038/s41598-024-59884-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 04/16/2024] [Indexed: 05/02/2024] Open
Abstract
Aging-related sarcopenia is a degenerative loss of strength and skeletal muscle mass that impairs quality of life. Evaluating NUDT3 gene and myogenin expression as new diagnostic tools in sarcopenia. Also, comparing the concomitant treatment of resistance exercise (EX) and creatine monohydrate (CrM) versus single therapy by EX, coenzyme Q10 (CoQ10), and CrM using aged rats. Sixty male rats were equally divided into groups. The control group, aging group, EX-treated group, the CoQ10 group were administered (500 mg/kg) of CoQ10, the CrM group supplied (0.3 mg/kg of CrM), and a group of CrM concomitant with resistance exercise. Serum lipid profiles, certain antioxidant markers, electromyography (EMG), nudix hydrolase 3 (NUDT3) expression, creatine kinase (CK), and sarcopenic index markers were measured after 12 weeks. The gastrocnemius muscle was stained with hematoxylin-eosin (H&E) and myogenin. The EX-CrM combination showed significant improvement in serum lipid profile, antioxidant markers, EMG, NUDT3 gene, myogenin expression, CK, and sarcopenic index markers from other groups. The NUDT3 gene and myogenin expression have proven efficient as diagnostic tools for sarcopenia. Concomitant treatment of CrM and EX is preferable to individual therapy because it reduces inflammation, improves the lipid serum profile, promotes muscle regeneration, and thus has the potential to improve sarcopenia.
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Affiliation(s)
- Eman I Elgizawy
- Medical Physiology Department, Faculty of Medicine, Menoufia University, Yassin Abd El Ghafar St., Shebin El Kom, Menoufia, 32511, Egypt.
| | - Ghada S Amer
- Medical Physiology Department, Faculty of Medicine, Menoufia University, Yassin Abd El Ghafar St., Shebin El Kom, Menoufia, 32511, Egypt
| | - Eman A Ali
- Clinical Pharmacology Department, Faculty of Medicine, Menoufia University, Shebin El Kom, Menoufia, Egypt
| | - Fatma S Alqalashy
- Pathology Department, Faculty of Medicine, Menoufia University, Shebin El Kom, Menoufia, Egypt
| | - Marwa M Ibrahim
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Menoufia University, Shebin El Kom, Menoufia, Egypt
| | - Asmaa A Abdel Latif
- Public Health and Community Medicine Department, Faculty of Medicine, Menoufia University, Shebin El Kom, Menoufia, Egypt
| | - Anwar M Shaban
- Medical Physiology Department, Faculty of Medicine, Menoufia University, Yassin Abd El Ghafar St., Shebin El Kom, Menoufia, 32511, Egypt
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Villalba MM, Silva NRS, Fujita RA, Fogagnolo C, Gomes MM, Pacheco MM. Muscle Recruitment Strategies in a Redundant Task: Age Differences Through Network Analyses. J Mot Behav 2024:1-15. [PMID: 38565202 DOI: 10.1080/00222895.2024.2332767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 03/12/2024] [Indexed: 04/04/2024]
Abstract
There are numerous studies comparing young and old adults in terms of muscle coordination in standard tasks (e.g., walking, reaching) and small variations of them. These tasks might hide differences: individuals would converge to similar behavior as they practice these throughout life. Also, we are unaware of studies that considered the muscle recruitment nested dynamics. For this reason, our study evaluated how young and old women coordinate and control the movement system while performing an unusual redundant motor control task through the network physiology approach. We acquired electromyographic signals from nine leg muscles of the dominant and non-dominant limbs during maximum voluntary isometric contractions (knee extension and flexion) and co-contraction bouts. Our results showed that young participants presented higher peak torque output, with similar EMG variability, compared to older participants. Considering firing rate frequencies, old and young women demonstrated different traits for network clustering and efficiency for the task. Age seems to affect muscle coordination at higher frequencies, even with a similar number of muscle synergies, indicating that younger women might have more integrated synergies than older women. The findings also point to differential muscle coordination adaptability.
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Affiliation(s)
- Marina M Villalba
- Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Ribeirão Preto College of Nursing, University of São Paulo, Ribeirão Preto, Brazil
| | - Nilson R S Silva
- Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Department of Mechanical and Biomedical Engineering, Mechanical Adaptations Laboratory, Boise State University, Boise, USA
| | - Rafael A Fujita
- Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Ribeirão Preto College of Nursing, University of São Paulo, Ribeirão Preto, Brazil
| | - Carol Fogagnolo
- Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
| | - Matheus M Gomes
- Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Ribeirão Preto College of Nursing, University of São Paulo, Ribeirão Preto, Brazil
| | - Matheus M Pacheco
- Biomechanics and Motor Control Laboratory, School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
- Faculty of Sport, LABIOMEP, CIFI2D, University of Porto, Porto, Portugal
- Department of Physical Education, GEDEM, Federal University of Rondônia, Porto Velho, Brazil
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Messa GAM, Korhonen MT, Degens H. No ageing-related increase in fibre type grouping in sprint-trained masters runners: A 10-year follow-up study. J Cachexia Sarcopenia Muscle 2024; 15:552-561. [PMID: 38228574 PMCID: PMC10995270 DOI: 10.1002/jcsm.13416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/09/2023] [Accepted: 11/28/2023] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND Previous research suggests that an ageing-associated remodelling and loss of motor units due to motor neuron death contributes significantly to muscle weakness in old age. In histological sections, motor unit remodelling is reflected by increased fibre type grouping. While regular exercise may not attenuate the loss of motor units during ageing, it has been suggested to facilitate reinnervation resulting in larger motor units, and a higher number and larger fibre type groups in histological sections of muscles from aged individuals. METHODS In a 10-year follow-up study, we assessed changes in the prevalence and size of fibre type groups in the vastus lateralis muscle from 34 male masters sprinters (40-85 years at start). RESULTS Over the 10 years, there was an ageing-related reduction in performance in the 60-m sprint (P < 0.001) without significant changes in fibre type composition and fibre cross-sectional area. Neither the number of fibre type groups, defined as a fibre surrounded exclusively by fibres of the same type, nor the group size changed significantly in the 10-year period. CONCLUSIONS These histological data show that there is limited to no significant fibre type grouping over a 10-year period in masters athletes who continued sprint run training. This observation challenges the paradigm that ageing, at least in systematically trained sprinters, is associated with motor unit remodelling.
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Affiliation(s)
- Guy Anselme Mpaka Messa
- Higher Institute of Medical TechnologyISTM‐KinshasaKinshasaDemocratic Republic of Congo
- Faculty of MedicineUniversity Kasa‐Vubu (UKV)BomaDemocratic Republic of Congo
- Faculty of MedicineUniversity de Bandundu (UNIBAND)BandunduDemocratic Republic of Congo
| | - Marko T. Korhonen
- Gerontology Research Center, Faculty of Sport and Health SciencesUniversity of JyväskyläJyväskyläFinland
| | - Hans Degens
- Department of Life Sciences, Institute of SportManchester Metropolitan UniversityManchesterUK
- Institute of Sport Science and InnovationsLithuanian Sports UniversityKaunasLithuania
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Domoto T, Kise K, Oyama Y, Furuya K, Kato Y, Nishita Y, Kozakai R, Otsuka R. Association of taurine intake with changes in physical fitness among community-dwelling middle-aged and older Japanese adults: an 8-year longitudinal study. Front Nutr 2024; 11:1337738. [PMID: 38571751 PMCID: PMC10989742 DOI: 10.3389/fnut.2024.1337738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 01/17/2024] [Indexed: 04/05/2024] Open
Abstract
Introduction Taurine has diverse valuable biological functions, including antioxidant activity and regulation of osmotic pressure. Maintaining physical fitness from middle age is important for healthy life expectancy. Although taurine administration improves muscle endurance and strength, its role in maintenance remains unclear. We aimed to clarify the longitudinal taurine intake association with fitness changes. Methods Participants comprised men and women aged ≥40 years who participated in the third (2002-2004; Baseline) and seventh (2010-2012; Follow-up) waves of the National Institute for Longevity Sciences-Longitudinal Study of Aging (NILS-LSA) and completed a 3-day dietary weights recording survey at baseline. A table of taurine content was prepared for 751 foods (including five food groups: Seaweed; Fish and shellfish; Meat; Eggs; and Milk and dairy products) from the Standard Tables of Food Composition in Japan (1,878 foods) 2010. Four physical fitness items (knee extension muscle strength, sit-and-reach, one-leg standing with eyes closed, and maximum walking speed) were measured at baseline and follow-up. We analyzed the association of taurine intake with physical fitness change, employing a general linear model (GLM) and trend tests for baseline taurine intake and follow-up fitness change. Adjustments included baseline variables: sex, age, height, weight, educational level, self-rated health, smoking status, depressive symptoms, and clinical history. Results The estimated average daily taurine intake (standard deviation) was 207.5 (145.6) mg/day at the baseline. When examining the association with the four physical fitness parameters, higher taurine intake positively increased the change in knee extension muscle strength (T1; 0.1, T2; 0.8, T3; 1.1 (kgf) GLM, p < 0.05; p for trend <0.05) and reduced the decline in knee extension muscle strength in the subgroup analysis of participants aged ≥65 years (T1: -1.9, T2: -1.7, T3: -0.4 kgf; GLM p < 0.05, p for trend <0.05). No relationship was found between taurine intake and the remaining three fitness factors. Conclusion Estimation of taurine intake showed that dietary taurine intake potentially contributes to the maintenance of knee extension muscle strength over 8 years among Japanese community-dwelling middle-aged and older individuals. This is the first study to investigate the association of dietary taurine intake with muscle strength.
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Affiliation(s)
- Takashi Domoto
- Self-Medication Research and Development Headquarters, Taisho Pharmaceutical Co., Ltd., Tokyo, Japan
- Department of Epidemiology of Aging, Research Institute, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Kazuyoshi Kise
- Self-Medication Research and Development Headquarters, Taisho Pharmaceutical Co., Ltd., Tokyo, Japan
- Department of Epidemiology of Aging, Research Institute, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Yukiko Oyama
- Self-Medication Research and Development Headquarters, Taisho Pharmaceutical Co., Ltd., Tokyo, Japan
- Department of Epidemiology of Aging, Research Institute, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Kanae Furuya
- Department of Epidemiology of Aging, Research Institute, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Yuki Kato
- Faculty of Health and Medical Sciences, Aichi Shukutoku University, Nagakute, Japan
| | - Yukiko Nishita
- Department of Epidemiology of Aging, Research Institute, National Center for Geriatrics and Gerontology, Obu, Japan
| | - Rumi Kozakai
- School of Lifelong Sport, Hokusho University, Ebetsu, Japan
| | - Rei Otsuka
- Department of Epidemiology of Aging, Research Institute, National Center for Geriatrics and Gerontology, Obu, Japan
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38
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Wang W, Ren W, Zhu L, Hu Y, Ye C. Identification of genes and key pathways underlying the pathophysiological association between sarcopenia and chronic obstructive pulmonary disease. Exp Gerontol 2024; 187:112373. [PMID: 38320732 DOI: 10.1016/j.exger.2024.112373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 01/26/2024] [Accepted: 01/30/2024] [Indexed: 02/09/2024]
Abstract
PURPOSE Chronic obstructive pulmonary disease (COPD) patients are likely to develop sarcopenia, while the exact mechanism underlying the association between sarcopenia and COPD is still not clear. This cohort study aims to explore the genes, signaling pathways, and transcription factors (TFs) that are related to the molecular pathogenesis of sarcopenia and COPD. METHODS According to the strict inclusion criteria, two gene sets (GSE8479 for sarcopenia and GSE76925 for COPD) were obtained from the Gene Expression Omnibus (GEO) platform. Overlapping differentially expressed genes (DEGs) in sarcopenia and COPD were detected, and comprehensive bioinformatics analysis was conducted, including functional annotation, enrichment analysis of Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG), construction of a protein-protein interaction (PPI) network, co-expression analysis, identification and validation of hub genes, and TFs prediction and verification. RESULTS In total, 118 downregulated and 92 upregulated common DEGs were detected. Functional analysis revealed that potential pathogenesis involves oxidoreductase activity and ferroptosis. Thirty hub genes were detected, and ATP metabolic process and oxidative phosphorylation were identified to be closely related to the hub genes. Validation analysis revealed that SAA1, C3, and ACSS2 were significantly upregulated, whereas ATF4, PPARGC1A, and MCTS1 were markedly downregulated in both sarcopenia and COPD. In addition, six TFs (NFKB1, RELA, IRF7, SP1, MYC, and JUN) were identified to regulate the expression of these genes, and SAA1 was found to be coregulated by NFKB1 and RELA. CONCLUSION This study uncovers potential common mechanisms of COPD complicated by sarcopenia. The hub gene SAA1 and the NF-κB signaling pathway could be involved, and oxidative phosphorylation and ferroptosis might be important contributors to this comorbidity.
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Affiliation(s)
- Weixi Wang
- Department of Geriatrics, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Weiying Ren
- Department of Geriatrics, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lin Zhu
- Department of Geriatrics, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yu Hu
- Department of Geriatrics, Zhongshan Hospital, Fudan University, Shanghai, China.
| | - Cong Ye
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University, Shanghai, China.
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Fuchs CJ, Hermans WJH, Nyakayiru J, Weijzen MEG, Smeets JSJ, Aussieker T, Senden JM, Wodzig WKHW, Snijders T, Verdijk LB, van Loon LJC. Daily blood flow restriction does not preserve muscle mass and strength during 2 weeks of bed rest. J Physiol 2024. [PMID: 38411283 DOI: 10.1113/jp286065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/08/2024] [Indexed: 02/28/2024] Open
Abstract
We measured the impact of blood flow restriction on muscle protein synthesis rates, muscle mass and strength during 2 weeks of strict bed rest. Twelve healthy, male adults (age: 24 ± 3 years, body mass index: 23.7 ± 3.1 kg/m2 ) were subjected to 14 days of strict bed rest with unilateral blood flow restriction performed three times daily in three 5 min cycles (200 mmHg). Participants consumed deuterium oxide and we collected blood and saliva samples throughout 2 weeks of bed rest. Before and immediately after bed rest, lean body mass (dual-energy X-ray absorptiometry scan) and thigh muscle volume (magnetic resonance imaging scan) were assessed in both the blood flow restricted (BFR) and control (CON) leg. Muscle biopsies were collected and unilateral muscle strength (one-repetition maximum; 1RM) was assessed for both legs before and after the bed rest period. Bed rest resulted in 1.8 ± 1.0 kg lean body mass loss (P < 0.001). Thigh muscle volume declined from 7.1 ± 1.1 to 6.7 ± 1.0 L in CON and from 7.0 ± 1.1 to 6.7 ± 1.0 L in BFR (P < 0.001), with no differences between treatments (P = 0.497). In addition, 1RM leg extension strength decreased from 60.2 ± 10.6 to 54.8 ± 10.9 kg in CON and from 59.2 ± 12.1 to 52.9 ± 12.0 kg in BFR (P = 0.014), with no differences between treatments (P = 0.594). Muscle protein synthesis rates during bed rest did not differ between the BFR and CON leg (1.11 ± 0.12 vs. 1.08 ± 0.13%/day, respectively; P = 0.302). Two weeks of bed rest substantially reduces skeletal muscle mass and strength. Blood flow restriction during bed rest does not modulate daily muscle protein synthesis rates and does not preserve muscle mass or strength. KEY POINTS: Bed rest, often necessary for recovery from illness or injury, leads to the loss of muscle mass and strength. It has been postulated that blood flow restriction may attenuate the loss of muscle mass and strength during bed rest. We investigated the effect of blood flow restriction on muscle protein synthesis rates, muscle mass and strength during 2 weeks of strict bed rest. Blood flow restriction applied during bed rest does not modulate daily muscle protein synthesis rates and does not preserve muscle mass or strength. Blood flow restriction is not effective in preventing muscle atrophy during a prolonged period of bed rest.
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Affiliation(s)
- Cas J Fuchs
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Wesley J H Hermans
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Jean Nyakayiru
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Michelle E G Weijzen
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Joey S J Smeets
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Thorben Aussieker
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Joan M Senden
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Will K H W Wodzig
- Central Diagnostic Laboratory, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Tim Snijders
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Lex B Verdijk
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Luc J C van Loon
- Department of Human Biology, Faculty of Health, Medicine and Life Sciences, School of Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre+, Maastricht, The Netherlands
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Kawai-Takaishi M, Miyagawa Y, Honda T, Inui M, Hosoyama T. Postnatal Pdzrn3 deficiency causes acute muscle atrophy without alterations in endplate morphology. Biochem Biophys Res Commun 2024; 696:149542. [PMID: 38244315 DOI: 10.1016/j.bbrc.2024.149542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/08/2024] [Accepted: 01/16/2024] [Indexed: 01/22/2024]
Abstract
PDZ domain-containing RING finger family protein 3 (PDZRN3) is expressed in various tissues, including the skeletal muscle. Although PDZRN3 plays a crucial role in the terminal differentiation of myoblasts and synaptic growth/maturation in myogenesis, the role of this molecule in postnatal muscles is completely unknown despite its lifelong expression in myofibers. In this study, we aimed to elucidate the function of PDZRN3 in mature myofibers using myofiber-specific conditional knockout mice. After tamoxifen injection, PDZRN3 deficiency was confirmed in both fast and slow myofibers of Myf6-CreERT2; Pdzrn3flox/flox (Pdzrn3mcKO) mice. Transcriptome analysis of the skeletal muscles of Pdzrn3mcKO mice identified differentially expressed genes, including muscle atrophy-related genes such as Smox, Amd1/2, and Mt1/2, suggesting that PDZRN3 is involved in the homeostatic maintenance of postnatal muscles. PDZRN3 deficiency caused muscle atrophy, predominantly in fast-twitch (type II) myofibers, and reduced muscle strength. While myofiber-specific PDZRN3 deficiency did not influence endplate morphology or expression of neuromuscular synaptic formation-related genes in postnatal muscles, indicating that the relationship between PDZRN3 and neuromuscular junctions might be limited during muscle development. Considering that the expression of Pdzrn3 in skeletal muscles was significantly lower in aged mice than in mature adult mice, we speculated that the PDZRN3-mediated muscle maintenance system might be associated with the pathophysiology of age-related muscle decline, such as sarcopenia.
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Affiliation(s)
- Minako Kawai-Takaishi
- Department of Musculoskeletal Disease, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
| | - Yoshihiro Miyagawa
- Department of Musculoskeletal Disease, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan
| | - Takeshi Honda
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan; Department of Chemistry, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Makoto Inui
- Department of Pharmacology, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Tohru Hosoyama
- Department of Musculoskeletal Disease, Geroscience Research Center, National Center for Geriatrics and Gerontology, Obu, Aichi, Japan.
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Kanazawa Y, Takahashi T, Nagano M, Koinuma S, Shigeyoshi Y. The Effects of Aging on Sarcoplasmic Reticulum-Related Factors in the Skeletal Muscle of Mice. Int J Mol Sci 2024; 25:2148. [PMID: 38396828 PMCID: PMC10889371 DOI: 10.3390/ijms25042148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/04/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
The pathogenesis of sarcopenia includes the dysfunction of calcium homeostasis associated with the sarcoplasmic reticulum; however, the localization in sarcoplasmic reticulum-related factors and differences by myofiber type remain unclear. Here, we investigated the effects of aging on sarcoplasmic reticulum-related factors in the soleus (slow-twitch) and gastrocnemius (fast-twitch) muscles of 3- and 24-month-old male C57BL/6J mice. There were no notable differences in the skeletal muscle weight of these 3- and 24-month-old mice. The expression of Atp2a1, Atp2a2, Sln, and Pln increased with age in the gastrocnemius muscles, but not in the soleus muscles. Subsequently, immunohistochemical analysis revealed ectopic sarcoplasmic reticulum calcium ion ATPase (SERCA) 1 and SERCA2a immunoreactivity only in the gastrocnemius muscles of old mice. Histochemical and transmission electron microscope analysis identified tubular aggregate (TA), an aggregation of the sarcoplasmic reticulum, in the gastrocnemius muscles of old mice. Dihydropyridine receptor α1, ryanodine receptor 1, junctophilin (JPH) 1, and JPH2, which contribute to sarcoplasmic reticulum function, were also localized in or around the TA. Furthermore, JPH1 and JPH2 co-localized with matrix metalloproteinase (MMP) 2 around the TA. These results suggest that sarcoplasmic reticulum-related factors are localized in or around TAs that occur in fast-twitch muscle with aging, but some of them might be degraded by MMP2.
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Affiliation(s)
- Yuji Kanazawa
- Department of Physical Therapy, Hokuriku University, Kanazawa 920-1180, Ishikawa, Japan
- Department of Anatomy and Neurobiology, Faculty of Medicine, Kindai University, Osakasayama 589-8511, Osaka, Japan; (M.N.); (S.K.); (Y.S.)
| | - Tatsuo Takahashi
- Department of Clinical Pharmacology, Hokuriku University, Kanazawa 920-1181, Ishikawa, Japan;
| | - Mamoru Nagano
- Department of Anatomy and Neurobiology, Faculty of Medicine, Kindai University, Osakasayama 589-8511, Osaka, Japan; (M.N.); (S.K.); (Y.S.)
| | - Satoshi Koinuma
- Department of Anatomy and Neurobiology, Faculty of Medicine, Kindai University, Osakasayama 589-8511, Osaka, Japan; (M.N.); (S.K.); (Y.S.)
| | - Yasufumi Shigeyoshi
- Department of Anatomy and Neurobiology, Faculty of Medicine, Kindai University, Osakasayama 589-8511, Osaka, Japan; (M.N.); (S.K.); (Y.S.)
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Marques DL, Neiva HP, Marinho DA, Marques MC. Changes in strength-related outcomes following velocity-monitored resistance training with 10 % and 20 % velocity loss in older adults. Exp Gerontol 2024; 186:112361. [PMID: 38232787 DOI: 10.1016/j.exger.2024.112361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/10/2023] [Accepted: 01/10/2024] [Indexed: 01/19/2024]
Abstract
We compared the effects of velocity-monitored resistance training with an intra-set velocity loss (i.e., the decrement in repetition velocity over the set) of 10 % vs. 20 % on strength-related outcomes in older adults. We randomly assigned eighteen older adults to a velocity loss group of 10 % (n = 10; 78 ± 12 years) or 20 % (n = 8; 73 ± 10 years) to perform a 10-week training program. The primary outcomes were the one-repetition maximum (1RM) and the average mean velocity against absolute loads associated with loads <60 % 1RM (MVlow) and ≥ 60 % 1RM (MVhigh) in the leg and chest press exercises, assessed at pre-, mid- (week 5), and post-test. Secondary outcomes included handgrip strength, 1-kg medicine ball throw distance, 10-m walking time, and five-repetition sit-to-stand time. No differences between groups were found in any outcome at any time (p > 0.05). Both groups improved the 1RM leg press from pre- to mid- and post-test and the MVlow and MVhigh from pre- to mid-test (p < 0.05). No group improved the 1RM chest press (p > 0.05), but both increased the MVlow from pre- to mid-test (p < 0.05). Furthermore, both groups improved the sit-to-stand time, while only the 20 % velocity loss group significantly improved handgrip strength and 10-m walking time (p < 0.05). The results showed that both velocity losses improved leg press strength and velocity, chest press velocity, and sit-to-stand time in older adults, although a 10 % velocity loss was more efficient as it required less volume (i.e., total repetitions) than 20 %. Nevertheless, the latter seems required to optimize handgrip strength and 10-m walking time in older people.
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Affiliation(s)
- Diogo Luís Marques
- Department of Sport Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal; Research Center in Sports Sciences, Health Sciences, and Human Development (CIDESD), 6201-001 Covilhã, Portugal.
| | - Henrique Pereira Neiva
- Department of Sport Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal; Research Center in Sports Sciences, Health Sciences, and Human Development (CIDESD), 6201-001 Covilhã, Portugal
| | - Daniel Almeida Marinho
- Department of Sport Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal; Research Center in Sports Sciences, Health Sciences, and Human Development (CIDESD), 6201-001 Covilhã, Portugal
| | - Mário Cardoso Marques
- Department of Sport Sciences, University of Beira Interior, 6201-001 Covilhã, Portugal; Research Center in Sports Sciences, Health Sciences, and Human Development (CIDESD), 6201-001 Covilhã, Portugal
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Habiballa L, Hruby A, Granic A, Dodds RM, Hillman SJ, Jurk D, Passos JF, Sayer AA. Determining the feasibility of characterising cellular senescence in human skeletal muscle and exploring associations with muscle morphology and physical function at different ages: findings from the MASS_Lifecourse Study. GeroScience 2024; 46:1141-1158. [PMID: 37434081 PMCID: PMC10828484 DOI: 10.1007/s11357-023-00869-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/05/2023] [Indexed: 07/13/2023] Open
Abstract
Cellular senescence may be associated with morphological changes in skeletal muscle and changes in physical function with age although there have been few human studies. We aimed to determine the feasibility of characterising cellular senescence in skeletal muscle and explored sex-specific associations between markers of cellular senescence, muscle morphology, and physical function in participants from the MASS_Lifecourse Study. Senescence markers (p16, TAF (Telomere-Associated DNA Damage Foci), HMGB1 (High Mobility Group Box 1), and Lamin B1) and morphological characteristics (fibre size, number, fibrosis, and centrally nucleated fibres) were assessed in muscle biopsies from 40 men and women (age range 47-84) using spatially-resolved methods (immunohistochemistry, immunofluorescence, and RNA and fluorescence in situ hybridisation). The associations between senescence, morphology, and physical function (muscle strength, mass, and physical performance) at different ages were explored. We found that most senescence markers and morphological characteristics were weakly associated with age in men but more strongly, although non-significantly, associated with age in women. Associations between senescence markers, morphology, and physical function were also stronger in women for HMGB1 and grip strength (r = 0.52); TAF, BMI, and muscle mass (r > 0.4); Lamin B1 and fibrosis (r = - 0.5); fibre size and muscle mass (r ≥ 0.4); and gait speed (r = - 0.5). However, these associations were non-significant. In conclusion, we have demonstrated that it is feasible to characterise cellular senescence in human skeletal muscle and to explore associations with morphology and physical function in women and men of different ages. The findings require replication in larger studies.
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Affiliation(s)
- Leena Habiballa
- AGE Research Group, Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle Upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
- Social Genetic and Developmental Psychiatry Centre, Institute of Psychiatry Psychology and Neuroscience, King's College London, London, UK
| | - Adam Hruby
- Robert and Arlene Kogod Center On Aging, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- University of Southern California, Los Angeles, CA, USA
| | - Antoneta Granic
- AGE Research Group, Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle Upon Tyne, UK.
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK.
| | - Richard M Dodds
- AGE Research Group, Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle Upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Susan J Hillman
- AGE Research Group, Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle Upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Diana Jurk
- Robert and Arlene Kogod Center On Aging, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - João F Passos
- Robert and Arlene Kogod Center On Aging, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Avan A Sayer
- AGE Research Group, Faculty of Medical Sciences, Translational and Clinical Research Institute, Newcastle University, Newcastle Upon Tyne, UK
- NIHR Newcastle Biomedical Research Centre, Newcastle University and Newcastle Upon Tyne Hospitals NHS Foundation Trust, Newcastle Upon Tyne, UK
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Hatt AA, Kamal M, Mikhail AI, Fortino SA, Wageh M, Kumbhare D, Parise G. Nuclear-localized androgen receptor content following resistance exercise training is associated with hypertrophy in males but not females. FASEB J 2024; 38:e23403. [PMID: 38197297 DOI: 10.1096/fj.202301291rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 01/11/2024]
Abstract
Androgen receptor (AR) content has been implicated in the differential response between high and low responders following resistance exercise training (RET). However, the influence of AR expression on acute skeletal muscle damage and whether it may influence the adaptive response to RET in females is poorly understood. Thus, the purpose of this exploratory examination was to 1) investigate changes in AR content during skeletal muscle repair and 2) characterize AR-mediated sex-based differences following RET. A skeletal muscle biopsy from the vastus lateralis was obtained from 26 healthy young men (n = 13) and women (n = 13) at baseline and following 300 eccentric kicks. Subsequently, participants performed 10 weeks of full-body RET and a final muscle biopsy was collected. In the untrained state, AR mRNA expression was associated with paired box protein-7 (PAX7) mRNA in males. For the first time in human skeletal muscle, we quantified AR content in the myofiber and localized to the nucleus where AR has been shown to trigger cellular outcomes related to growth. Upon eccentric damage, nuclear-associated AR (nAR) content increased (p < .05) in males and not females. Males with the greatest increase in cross-sectional area (CSA) post-RET had more (p < .05) nAR content than females with the greatest gain CSA. Collectively, skeletal muscle damage and RET increased AR protein, and both gene and hypertrophy measures revealed sex differences in relation to AR. These findings suggest that AR content but more importantly, nuclear localization, is a factor that differentiates RET-induced hypertrophy between males and females.
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Affiliation(s)
- Aidan A Hatt
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, Ontario, Canada
| | - Michael Kamal
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, Ontario, Canada
| | - Andrew I Mikhail
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, Ontario, Canada
| | - Stephen A Fortino
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, Ontario, Canada
| | - Mai Wageh
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, Ontario, Canada
| | - Dinesh Kumbhare
- Department of Medicine, Division of Physical Medicine and Rehabilitation, Toronto Rehabilitation Institute, Toronto, Ontario, Canada
| | - Gianni Parise
- Department of Kinesiology, Faculty of Science, McMaster University, Hamilton, Ontario, Canada
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Nishikawa H, Kim SK, Asai A. Body Composition in Chronic Liver Disease. Int J Mol Sci 2024; 25:964. [PMID: 38256036 PMCID: PMC10815828 DOI: 10.3390/ijms25020964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/08/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Body composition has recently been attracting people's attention, not only from a cosmetic standpoint but also from the perspective of health and longevity. The body is classified into three components: fat, bone, and lean soft tissue, and it is common to see an increase in body fat and a decrease in total body muscle mass with aging. Aging-related loss of muscle mass and muscle function is referred to as primary sarcopenia, while sarcopenia caused by disease-specific conditions is referred to as secondary sarcopenia. On the other hand, the liver-muscle axis has been attracting attention in recent years, and it has become clear that the liver and the skeletal muscles interact with each other. In particular, patients with cirrhosis are prone to secondary sarcopenia due to protein-energy malnutrition, which is a characteristic pathophysiology of the disease, suggesting the importance of the organ-organ network. In this review, we would like to outline the latest findings in this field, with a focus on body composition in liver diseases such as liver cirrhosis, fatty liver disease, alcoholic liver disease, and hepatocellular carcinoma.
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Affiliation(s)
- Hiroki Nishikawa
- Second Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Osaka, Japan
| | - Soo Ki Kim
- Department of Gastroenterology, Kobe Asahi Hospital, Kobe 653-8501, Hyogo, Japan
| | - Akira Asai
- Second Department of Internal Medicine, Osaka Medical and Pharmaceutical University, Takatsuki 569-8686, Osaka, Japan
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Yamaguchi T, Kouzaki K, Sasaki K, Nakazato K. Alterations in neuromuscular junction morphology with ageing and endurance training modulate neuromuscular transmission and myofibre composition. J Physiol 2024. [PMID: 38173183 DOI: 10.1113/jp285143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024] Open
Abstract
Both ageing and exercise training affect the neuromuscular junction (NMJ) structure. Morphological alterations in the NMJ have been considered to influence neuromuscular transmission and myofibre properties, but the direct link between the morphology and function has yet to be established. We measured the neuromuscular transmission, myofibre composition and NMJ structure of 5-month-old (young) and 24-month-old untrained (aged control) and trained (aged trained) mice. Aged trained mice were subjected to 2 months of endurance training before the measurement. Neuromuscular transmission was evaluated in vivo as the ratio of ankle plantar flexion torque evoked by the sciatic nerve stimulation to that by direct muscle stimulation. The torque ratio was significantly lower in aged mice than in young and aged trained mice at high-frequency stimulations, showing a significant positive correlation with voluntary grip strength. The degree of pre- to post-synaptic overlap of the NMJ was also significantly lower in aged mice and positively correlated with the torque ratio. We also found that the proportion of fast-twitch fibres in the soleus muscle decreased with age, and that age-related denervation occurred preferentially in fast-twitch fibres. Age-related denervation and a shift in myofibre composition were partially prevented by endurance training. These results suggest that age-related deterioration of the NMJ structure impairs neuromuscular transmission and alters myofibre composition, but these alterations can be prevented by structural amelioration of NMJ with endurance training. Our findings highlight the importance of the NMJ as a major determinant of age-related deterioration of skeletal muscles and the clinical significance of endurance training as a countermeasure. KEY POINTS: The neuromuscular junction (NMJ) plays an essential role in neuromuscular transmission and the maintenance of myofibre properties. We show that neuromuscular transmission is impaired with ageing but recovered by endurance training, which contributes to alterations in voluntary strength. Neuromuscular transmission is associated with the degree of pre- to post-synaptic overlap of the NMJ. Age-related denervation of fast-twitch fibres and a shift in myofibre composition toward a slower phenotype are partially prevented by endurance training. Our study provides substantial evidence that age-related and exercise-induced alterations in neuromuscular transmission and myofibre properties are associated with morphological changes in the NMJ.
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Affiliation(s)
- Tatsuhiro Yamaguchi
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Karina Kouzaki
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Kazushige Sasaki
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
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Weedall AD, Dallaway A, Hattersley J, Diokno M, Hutchinson CE, Wilson AJ, Wayte SC. Changes in lumbar muscle diffusion tensor indices with age. BJR Open 2024; 6:tzae002. [PMID: 38371493 PMCID: PMC10873271 DOI: 10.1093/bjro/tzae002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 01/10/2024] [Indexed: 02/20/2024] Open
Abstract
Objective To investigate differences in diffusion tensor imaging (DTI) parameters and proton density fat fraction (PDFF) in the spinal muscles of younger and older adult males. Methods Twelve younger (19-30 years) and 12 older (61-81years) healthy, physically active male participants underwent T1W, T2W, Dixon and DTI of the lumbar spine. The eigenvalues (λ1, λ2, and λ3), fractional anisotropy (FA), and mean diffusivity (MD) from the DTI together with the PDFF were determined in the multifidus, medial and lateral erector spinae (ESmed, ESlat), and quadratus lumborum (QL) muscles. A two-way ANOVA was used to investigate differences with age and muscle and t-tests for differences in individual muscles with age. Results The ANOVA gave significant differences with age for all DTI parameters and the PDFF (P < .01) and with muscle (P < .01) for all DTI parameters except for λ1 and for the PDFF. The mean of the eigenvalues and MD were lower and the FA higher in the older age group with differences reaching statistical significance for all DTI measures for ESlat and QL (P < .01) but only in ESmed for λ3 and MD (P < .05). Conclusions Differences in DTI parameters of muscle with age result from changes in both in the intra- and extra-cellular space and cannot be uniquely explained in terms of fibre length and diameter. Advances in knowledge Previous studies looking at age have used small groups with uneven age spacing. Our study uses two well defined and separated age groups.
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Affiliation(s)
- Andrew D Weedall
- Radiology Physics, Department of Clinical Physics and Bioengineering, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, United Kingdom
| | - Alexander Dallaway
- Centre for Physical Activity, Sport and Exercise Sciences, Coventry University, Coventry, CV1 5FB, United Kingdom
- Present Address: Faculty of Education, Health and Wellbeing, School of Health and Society, University of Wolverhampton, Wolverhampton, WV1 1LY, United Kingdom
| | - John Hattersley
- Human Metabolic Research Unit, Department of Research and Development, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, United Kingdom
- School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Michael Diokno
- Radiology Department, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, United Kingdom
| | - Charles E Hutchinson
- Radiology Department, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, United Kingdom
- Warwick Medical School, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Adrian J Wilson
- Human Metabolic Research Unit, Department of Research and Development, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, United Kingdom
- Department of Physics, University of Warwick, Coventry, CV4 7AL, United Kingdom
| | - Sarah C Wayte
- Radiology Physics, Department of Clinical Physics and Bioengineering, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, United Kingdom
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Kataoka R, Hammert WB, Yamada Y, Song JS, Seffrin A, Kang A, Spitz RW, Wong V, Loenneke JP. The Plateau in Muscle Growth with Resistance Training: An Exploration of Possible Mechanisms. Sports Med 2024; 54:31-48. [PMID: 37787845 DOI: 10.1007/s40279-023-01932-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/01/2023] [Indexed: 10/04/2023]
Abstract
It is hypothesized that there is likely a finite ability for muscular adaptation. While it is difficult to distinguish between a true plateau following a long-term training period and short-term stalling in muscle growth, a plateau in muscle growth has been attributed to reaching a genetic potential, with limited discussion on what might physiologically contribute to this muscle growth plateau. The present paper explores potential physiological factors that may drive the decline in muscle growth after prolonged resistance training. Overall, with chronic training, the anabolic signaling pathways may become more refractory to loading. While measures of anabolic markers may have some predictive capabilities regarding muscle growth adaptation, they do not always demonstrate a clear connection. Catabolic processes may also constrain the ability to achieve further muscle growth, which is influenced by energy balance. Although speculative, muscle cells may also possess cell scaling mechanisms that sense and regulate their own size, along with molecular brakes that hinder growth rate over time. When considering muscle growth over the lifespan, there comes a point when the anabolic response is attenuated by aging, regardless of whether or not individuals approach their muscle growth potential. Our goal is that the current review opens avenues for future experimental studies to further elucidate potential mechanisms to explain why muscle growth may plateau.
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Affiliation(s)
- Ryo Kataoka
- Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, P.O. Box 1848, University, MS, 38677, USA
| | - William B Hammert
- Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, P.O. Box 1848, University, MS, 38677, USA
| | - Yujiro Yamada
- Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, P.O. Box 1848, University, MS, 38677, USA
| | - Jun Seob Song
- Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, P.O. Box 1848, University, MS, 38677, USA
| | - Aldo Seffrin
- Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, P.O. Box 1848, University, MS, 38677, USA
| | - Anna Kang
- Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, P.O. Box 1848, University, MS, 38677, USA
| | - Robert W Spitz
- Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, P.O. Box 1848, University, MS, 38677, USA
| | - Vickie Wong
- Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, P.O. Box 1848, University, MS, 38677, USA
| | - Jeremy P Loenneke
- Department of Health, Exercise Science, and Recreation Management, Kevser Ermin Applied Physiology Laboratory, The University of Mississippi, P.O. Box 1848, University, MS, 38677, USA.
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Liang C, Jiang F, Kawaguchi D, Chen X. A Biomechanical Simulation of Forearm Flexion Using the Finite Element Approach. Bioengineering (Basel) 2023; 11:23. [PMID: 38247900 PMCID: PMC10812974 DOI: 10.3390/bioengineering11010023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/20/2023] [Accepted: 12/22/2023] [Indexed: 01/23/2024] Open
Abstract
Upper limb movement is vital in daily life. A biomechanical simulation of the forearm with consideration of the physiological characteristics of the muscles is instrumental in gaining deeper insights into the upper limb motion mechanisms. In this study, we established a finite element model of the forearm, including the radius, biceps brachii, and tendons. We simulated the motion of the forearm resulting from the contraction of the biceps brachii by using a Hill-type transversely isotropic hyperelastic muscle model. We adjusted the contraction velocity of the biceps brachii muscle in the simulation and found that a slower muscle contraction velocity facilitated forearm flexion. Then, we changed the percentage of fast-twitch fibers, the maximum muscle strength, and the neural excitation values of the biceps brachii muscle to investigate the forearm flexion of elderly individuals. Our results indicated that reduced fast-twitch fiber percentage, maximum muscle strength, and neural excitation contributed to the decline in forearm motion capability in elderly individuals. Additionally, there is a threshold for neural excitation, below which, motion capability sharply declines. Our model aids in understanding the role of the biceps brachii in forearm flexion and identifying the causes of upper limb movement disorders, which is able to provide guidance for enhancing upper limb performance.
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Affiliation(s)
| | - Fei Jiang
- Department of Mechanical Engineering, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Tokiwadai, Ube 7558611, Yamaguchi, Japan; (C.L.); (D.K.); (X.C.)
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Safonicheva O, Zaborova V, Lazareva I, Kryuchkova K, Bolotskaya A, Ovchinnikova M, Popova C, Putilo V, Rybakov V, Kotovskiy S, Nikitin M. Age-Related Study of Anthropometry Indicators, Body Composition, Strength and Vital Capacity at Masters Athletics: How to Postpone Sarcopenia. Clin Interv Aging 2023; 18:2155-2164. [PMID: 38146330 PMCID: PMC10749483 DOI: 10.2147/cia.s433944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 12/01/2023] [Indexed: 12/27/2023] Open
Abstract
Purpose The purpose of this study was to compare the anthropometric indicators of sports veterans, former athletes who stopped training, and non-sports people aged 40 years and older to assess the impact of regular sports on the stability of the body. Patients and Methods 100 athletes and 31 people non-sports were included in the study. Athletes were divided into two groups depending on the mode of motor activity. The first group (n=75) continued their regular sports activities. The second group (n=25) stopped training. Height, weight, chest circumference, mobility, waist, shoulder circumference, forearm, hip, ankle, fat mass, and muscle mass were measured, and dynamometry was performed. Results Body weight is statistically significantly (p<0.05) less in those who continue sports (70.7±10.2) classes after 60 years compared with the control group (82.4±9.3). In sports veterans, the chest excursion and the shoulder circumference is statistically significantly (p<0.05) greater than in the control group. In the subjects of the first group aged from 40 to 49 (4551±612) and from 50 to 59 (4242±416), the FVC index was statistically significantly (p<0.05) higher than in the control group (3890±344 and 3786±401, respectively). The body composition of veterans is characterized by a high level of muscle mass and a low level of fat mass. At the age of 40-49, the percentage of muscle tissue in sports veterans was statistically significantly higher (46.32±2.74) (p<0.05) than in the group of athletes who stopped sports activities (44.09±5.29). Conclusion Veterans of sports demonstrate higher indicators of limb girth and muscle strength compared to untrained people of the same age. In addition, sports veterans have a lower content of adipose tissue and a greater expression of muscle mass. Thus, the data obtained by us show that sports prevent the development of sarcopenia and can also affect cardiovascular risk.
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Affiliation(s)
- Olga Safonicheva
- Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Victoria Zaborova
- Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Irina Lazareva
- Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Kira Kryuchkova
- Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Anastasia Bolotskaya
- Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Marina Ovchinnikova
- Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Christina Popova
- Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Victor Putilo
- Institute of Clinical Medicine, Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Vitaly Rybakov
- Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region, Russia
| | - Sergey Kotovskiy
- National Medical Research Center of Rehabilitation and Balneology, Moscow, Russia
| | - Mikhail Nikitin
- National Medical Research Center of Rehabilitation and Balneology, Moscow, Russia
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