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Vanmunster M, Rojo-Garcia AV, Pacolet A, Jonkers I, Koppo K, Lories R, Suhr F. Prolonged mechanical muscle loading increases mechanosensor gene and protein levels and causes a moderate fast-to-slow fiber type switch in mice. J Appl Physiol (1985) 2023; 135:918-931. [PMID: 37675473 DOI: 10.1152/japplphysiol.00204.2023] [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: 03/31/2023] [Revised: 08/30/2023] [Accepted: 08/30/2023] [Indexed: 09/08/2023] Open
Abstract
Mechanosensing and subsequent mechanotransduction are indispensable for muscle plasticity. Nevertheless, a scarcity of literature exists regarding an all-encompassing understanding of the muscle mechanosensing machinery's response to prolonged loading, especially in conditions that resemble a natural physiological state of skeletal muscle. This study aimed to comprehensively explore the effects of prolonged mechanical loading on mechanosensitive components, skeletal muscle characteristics, and metabolism-related gene clusters. Twenty male C57BL/6J mice were randomly divided into two groups: control and prolonged mechanical loading. To induce prolonged mechanical loading on the triceps brachii (TRI) and biceps brachii (BIC) muscles, a 14-day period of tail suspension was implemented. In TRI only, prolonged mechanical loading caused a mild fast-to-slow fiber type shift together with increased mechanosensor gene and protein levels. It also increased transcription factors associated with slow muscle fibers while decreasing those related to fast-type muscle gene expression. Succinate dehydrogenase activity, a marker of muscle oxidative capacity, and genes involved in oxidative and mitochondrial turnover increased, whereas glycolytic-related genes decreased. Moreover, prolonged mechanical loading stimulated markers of muscle protein synthesis. Taken together, our data show a collective muscle-specific increase in mechanosensor gene and protein levels upon a period of prolonged mechanical loading in conditions that reflect a more natural physiological state of skeletal muscle in mice. We provide additional proof-of-concept that prolonged tail suspension-induced loading of the forelimbs triggers a muscle-specific fast-to-slow fiber type switch, and this coincides with increased protein synthesis-related signaling.NEW & NOTEWORTHY This study provides a comprehensive overview of the effects of prolonged loading on mechanosensitive components in conditions that better reflect the natural physiological state of skeletal muscle. Although the muscle mechanosensing machinery has been widely acknowledged for its responsiveness to altered loading, an inclusive understanding of its response to prolonged loading remains scarce. Our results show a fast-to-slow fiber type shift and an upregulation of mechanosensor gene and protein levels following prolonged loading.
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Affiliation(s)
- Mathias Vanmunster
- Department of Movement Sciences, Exercise Physiology Research Group, KU Leuven, Leuven, Belgium
| | | | - Alexander Pacolet
- Department of Movement Sciences, Exercise Physiology Research Group, KU Leuven, Leuven, Belgium
| | - Ilse Jonkers
- Department of Movement Sciences, Human Movement Biomechanics Research Group, KU Leuven, Leuven, Belgium
| | - Katrien Koppo
- Department of Movement Sciences, Exercise Physiology Research Group, KU Leuven, Leuven, Belgium
| | - Rik Lories
- Department of Development and Regeneration, Skeletal Biology and Engineering Research Center, KU Leuven, Leuven, Belgium
| | - Frank Suhr
- Department of Movement Sciences, Exercise Physiology Research Group, KU Leuven, Leuven, Belgium
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Lapinskas E, Krusnauskas R, Cekanauskaite A, Ratkevicius A. Effect of fasting on body composition and proteolysis gene expression in skeletal muscles and liver of BEH+/+ and BEL mice. Growth Factors 2020; 38:259-268. [PMID: 34355624 DOI: 10.1080/08977194.2021.1960831] [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] [Indexed: 10/20/2022]
Abstract
Fasting improves health, but can cause muscle weakness. We assessed body composition in 21-week old males of Berlin high (BEH+/+) and Berlin low (BEL) strains after two bouts of 48-h or 40-h of fasting with 5-day refeeding in between, respectively. BEH+/+ mice tended to loose less weight than BEL in bout 1 and 2 (16.0 ± 2.7 versus 23.5 ± 2.9%, p < 0.001 and 17.1 ± 3.4 versus 20.4 ± 3.4%, p = 0.17, respectively). In spite of greater serum IGF-1 and body fat levels, BEH+/+ mice showed more severe muscle atrophy, but less marked liver wasting and fat depletion than BEL mice. BEH+/+ mice also showed smaller increases in expression of p62, Atrogin-1, and Mstn genes in skeletal muscles. In summary, BEL mice show resistance to fasting-induced muscle wasting in spite of low serum IGF-1 levels and high expression of genes associated with muscle atrophy.
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Affiliation(s)
- Edgaras Lapinskas
- Department of Health Promotion and Rehabilitation, Lithuanian Sports University, Kaunas, Lithuania
| | - Raulas Krusnauskas
- Institute of Sports Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
- Neuroscience Institute, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Agne Cekanauskaite
- Institute of Sports Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
| | - Aivaras Ratkevicius
- Department of Health Promotion and Rehabilitation, Lithuanian Sports University, Kaunas, Lithuania
- Institute of Sports Science and Innovations, Lithuanian Sports University, Kaunas, Lithuania
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Kvedaras M, Minderis P, Krusnauskas R, Ratkevicius A. Effects of ten-week 30% caloric restriction on metabolic health and skeletal muscles of adult and old C57BL/6J mice. Mech Ageing Dev 2020; 190:111320. [DOI: 10.1016/j.mad.2020.111320] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 07/20/2020] [Accepted: 07/24/2020] [Indexed: 12/17/2022]
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Myostatin dysfunction is associated with lower physical activity and reduced improvements in glucose tolerance in response to caloric restriction in Berlin high mice. Exp Gerontol 2019; 128:110751. [DOI: 10.1016/j.exger.2019.110751] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 10/06/2019] [Accepted: 10/13/2019] [Indexed: 12/16/2022]
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Elashry MI, Eldaey A, Glenske K, Matsakas A, Wenisch S, Arnhold S, Patel K. The effect of high-fat diet on the morphological properties of the forelimb musculature in hypertrophic myostatin null mice. J Anat 2019; 235:825-835. [PMID: 31198988 DOI: 10.1111/joa.13025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2019] [Indexed: 12/20/2022] Open
Abstract
Obesity is a worldwide nutritional disorder affecting body performance, including skeletal muscle. Inhibition of myostatin not only increases the muscle mass but also it reduces body fat accumulation. We examined the effect of high-fat diet on the phenotypic properties of forelimb muscles from myostatin null mice. Male wild-type and myostatin null mice were fed on either a normal diet or a high-fat diet (45% fat) for 10 weeks. Musculus triceps brachii Caput longum; M. triceps brachii Caput laterale; M. triceps brachii Caput mediale; M. extensor carpi ulnaris and M. flexor carpi ulnaris were processed for fiber type composition using immunohistochemistry and morphometric analysis. Although the muscle mass revealed no change under a high-fat diet, there were morphometric alterations in the absence of myostatin. We show that high-fat diet reduces the cross-sectional area of the fast (IIB and IIX) fibers in M. triceps brachii Caput longum and M. triceps brachii Caput laterale of both genotypes. In contrast, increases of fast fiber areas were observed in both M. extensor carpi ulnaris of wild-type and M. flexor carpi ulnaris of myostatin null mice. Meanwhile, a high-fat diet increased the area of the fast IIA fibers in wild-type mice; myostatin null mice display a muscle-dependent alteration in the area of the same fiber type. The combined high-fat diet and myostatin deletion shows no effect on the area of slow type I fibers. Although a high-fat diet causes a reduction in the area of the peripheral IIB fibers in both genotypes, only myostatin null mice show an increase in the area of the central IIB fibers. We provide evidence that a high-fat diet induces a muscle-dependent fast to slow myofiber shift in the absence of myostatin. The data suggest that the morphological alterations of muscle fibers under a combined high-fat diet and myostatin deletion reflect a functional adaptation of the muscle to utilize the high energy intake.
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Affiliation(s)
- Mohamed I Elashry
- Anatomy and Embryology Department, Faculty of Veterinary Medicine, University of Mansoura, Mansoura, Egypt.,Institute of Veterinary Anatomy, Histology and Embryology, Justus Liebig University of Giessen, Giessen, Germany
| | - Asmaa Eldaey
- Anatomy and Embryology Department, Faculty of Veterinary Medicine, University of Mansoura, Mansoura, Egypt.,Clinic of Small Animals, c/o Institute of Veterinary Anatomy, Histology and Embryology, Justus Liebig University of Giessen, Giessen, Germany
| | - Kristina Glenske
- Clinic of Small Animals, c/o Institute of Veterinary Anatomy, Histology and Embryology, Justus Liebig University of Giessen, Giessen, Germany
| | - Antonios Matsakas
- Molecular Physiology Laboratory, Centre for Atherothrombotic and Metabolic Disease, Hull York Medical School, University of Hull, Hull, UK
| | - Sabine Wenisch
- Clinic of Small Animals, c/o Institute of Veterinary Anatomy, Histology and Embryology, Justus Liebig University of Giessen, Giessen, Germany
| | - Stefan Arnhold
- Institute of Veterinary Anatomy, Histology and Embryology, Justus Liebig University of Giessen, Giessen, Germany
| | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading, UK
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Toniolo L, Fusco P, Formoso L, Mazzi A, Canato M, Reggiani C, Giacomello E. Resveratrol treatment reduces the appearance of tubular aggregates and improves the resistance to fatigue in aging mice skeletal muscles. Exp Gerontol 2018; 111:170-179. [PMID: 30036632 DOI: 10.1016/j.exger.2018.07.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 07/06/2018] [Accepted: 07/18/2018] [Indexed: 01/07/2023]
Abstract
Resveratrol (RES) is a polyphenolic compound found in grapes, peanuts, and in some berries. RES has been reported to exhibit antioxidant, anti-inflammatory, anti-proliferative properties, and to target mitochondrial-related pathways in mammalian cells and animal models. Therefore, RES is currently advised as supplement in the diet of elderly individuals. Although it is hypothesized that some of RES beneficial actions likely arise from its action on the skeletal muscle, the investigation of RES effects on this tissue remains still elusive. This study reports the effects of a 0,04% RES-supplemented diet for six months, on the skeletal muscle properties of C57/BL6 aging mice. The analysis of the morphology, protein expression, and functional-mechanical properties of selected skeletal muscles in treated compared to control mice, revealed that treated animals presented less tubular aggregates and a better resistance to fatigue in an ex-vivo contraction test, suggesting RES as a good candidate to reduce age-related alterations in muscle.
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Affiliation(s)
- Luana Toniolo
- Laboratory of Muscle Biophysics, Department of Biomedical Sciences, University of Padova, Padova, Italy; Interuniversity Institute of Myology, Italy
| | - Pina Fusco
- Department of Molecular and Developmental Medicine, University of Siena, Italy
| | - Luca Formoso
- Department of Molecular and Developmental Medicine, University of Siena, Italy
| | - Alessandra Mazzi
- Department of Molecular and Developmental Medicine, University of Siena, Italy
| | - Marta Canato
- Laboratory of Muscle Biophysics, Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Carlo Reggiani
- Laboratory of Muscle Biophysics, Department of Biomedical Sciences, University of Padova, Padova, Italy; Interuniversity Institute of Myology, Italy
| | - Emiliana Giacomello
- Department of Molecular and Developmental Medicine, University of Siena, Italy; Interuniversity Institute of Myology, Italy.
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