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Jauregui-Zunzunegui S, Rodríguez-Artalejo F, Tellez-Plaza M, García-Esquinas E. Glyphosate exposure, muscular health and functional limitations in middle-aged and older adults. ENVIRONMENTAL RESEARCH 2024; 251:118547. [PMID: 38452917 DOI: 10.1016/j.envres.2024.118547] [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: 01/02/2024] [Revised: 02/19/2024] [Accepted: 02/22/2024] [Indexed: 03/09/2024]
Abstract
BACKGROUND Glyphosate is the most widely used herbicide worldwide, both in domestic and industrial settings. Experimental research in animal models has demonstrated changes in muscle physiology and reduced contractile strength associated with glyphosate exposure, while epidemiological studies have shown associations between glyphosate exposure and adverse health outcomes in critical biological systems affecting muscle function. METHODS This study used data from a nationally representative survey of the non-institutionalized U.S. general population (NHANES, n = 2132). Urine glyphosate concentrations were determined by ion chromatography with tandem mass spectrometry. Hand grip strength (HGS) was measured using a Takei Dynamometer, and relative strength estimated as the ratio between HGS in the dominant hand and the appendicular lean mass (ALM) to body mass index (ALMBMI) ratio. Low HGS and low relative HGS were defined as 1 sex-, age- and race-specific SD below the mean. Physical function limitations were identified as significant difficulty or incapacity in various activities. RESULTS In fully-adjusted models, the Mean Differences (MD) and 95% confidence intervals [95%CI] per doubling increase in glyphosate concentrations were -0.55 [-1.09, -0.01] kg for HGS in the dominant hand, and -0.90 [-1.58. -0.21] kg for HGS/ALMBMI. The Odds Ratios (OR) [95% CI] for low HGS, low relative HGS and functional limitations by glyphosate concentrations were 1.27 [1.03, 1.57] for low HGS; 1.43 [1.05; 1.94] for low relative HGS; 1.33 [1.08, 1.63] for stooping, crouching or kneeling difficulty; 1.17 [0.91, 1.50] for lifting or carrying items weighting up to 10 pounds difficulty; 1.21 [1.01, 1.40] for standing up from armless chair difficulty; and 1.47 [1.05, 2.29] for ascending ten steps without pause difficulty. CONCLUSIONS Glyphosate exposure may be a risk factor for decreased grip strength and increased physical functional limitations. More studies investigating the influence of this and other environmental pollutants on functional aging are needed.
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Affiliation(s)
- Sara Jauregui-Zunzunegui
- Department of Preventive Medicine and Public Health, Hospital Universitario Nuestra Señora de Candelaria, Spain.
| | - Fernando Rodríguez-Artalejo
- Department of Preventive Medicine and Public Health, Universidad Autónoma de Madrid, Madrid, Spain; CIBERESP (CIBER of Epidemiology and Public Health), Madrid, Spain; IMDEA-Food, CEI UAM+CSIC, Madrid, Spain.
| | - María Tellez-Plaza
- Department of Preventive Medicine and Public Health, Universidad Autónoma de Madrid, Madrid, Spain; Department of Chronic Diseases Epidemiology, National Center of Epidemiology, Carlos III Health Institute, Madrid, Spain.
| | - Esther García-Esquinas
- CIBERESP (CIBER of Epidemiology and Public Health), Madrid, Spain; Department of Chronic Diseases Epidemiology, National Center of Epidemiology, Carlos III Health Institute, Madrid, Spain.
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Boccardi V. Sarcopenia: A dive into metabolism to promote a multimodal, preventive, and regenerative approach. Mech Ageing Dev 2024; 219:111941. [PMID: 38750969 DOI: 10.1016/j.mad.2024.111941] [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: 04/25/2024] [Revised: 05/07/2024] [Accepted: 05/11/2024] [Indexed: 05/20/2024]
Abstract
Sarcopenia, the age-related loss of skeletal muscle mass and function, poses a significant challenge in the field of geriatrics and gerontology, impacting the health and independence of older adults. Understanding and addressing sarcopenia is crucial for optimizing clinical outcomes and enhancing the quality of life along with aging. By synthesizing current research findings and theoretical frameworks, this review elucidates the multifaceted mechanisms underlying sarcopenia, mainly focusing on energy balance and metabolic processes. Furthermore, the manuscript explores the implications of sarcopenia on overall health outcomes, functional decline, and quality of life in older individuals. The study concludes with a perspective on the role of preventive and regenerative medicine in sarcopenia, where the two main lifestyle pillars (exercise and diet) represent key factors.
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Affiliation(s)
- Virginia Boccardi
- Division of Gerontology and Geriatrics. Department of Medicine and Surgery, University of Perugia, Perugia, Italy.
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Livshits G, Kalinkovich A. Restoration of epigenetic impairment in the skeletal muscle and chronic inflammation resolution as a therapeutic approach in sarcopenia. Ageing Res Rev 2024; 96:102267. [PMID: 38462046 DOI: 10.1016/j.arr.2024.102267] [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: 11/20/2023] [Revised: 02/17/2024] [Accepted: 03/06/2024] [Indexed: 03/12/2024]
Abstract
Sarcopenia is an age-associated loss of skeletal muscle mass, strength, and function, accompanied by severe adverse health outcomes, such as falls and fractures, functional decline, high health costs, and mortality. Hence, its prevention and treatment have become increasingly urgent. However, despite the wide prevalence and extensive research on sarcopenia, no FDA-approved disease-modifying drugs exist. This is probably due to a poor understanding of the mechanisms underlying its pathophysiology. Recent evidence demonstrate that sarcopenia development is characterized by two key elements: (i) epigenetic dysregulation of multiple molecular pathways associated with sarcopenia pathogenesis, such as protein remodeling, insulin resistance, mitochondria impairments, and (ii) the creation of a systemic, chronic, low-grade inflammation (SCLGI). In this review, we focus on the epigenetic regulators that have been implicated in skeletal muscle deterioration, their individual roles, and possible crosstalk. We also discuss epidrugs, which are the pharmaceuticals with the potential to restore the epigenetic mechanisms deregulated in sarcopenia. In addition, we discuss the mechanisms underlying failed SCLGI resolution in sarcopenia and the potential application of pro-resolving molecules, comprising specialized pro-resolving mediators (SPMs) and their stable mimetics and receptor agonists. These compounds, as well as epidrugs, reveal beneficial effects in preclinical studies related to sarcopenia. Based on these encouraging observations, we propose the combination of epidrugs with SCLI-resolving agents as a new therapeutic approach for sarcopenia that can effectively attenuate of its manifestations.
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Affiliation(s)
- Gregory Livshits
- Department of Morphological Sciences, Adelson School of Medicine, Ariel University, Ariel 4077625, Israel; Department of Anatomy and Anthropology, Faculty of Medical and Health Sciences, School of Medicine, Tel-Aviv University, Tel-Aviv 6905126, Israel.
| | - Alexander Kalinkovich
- Department of Anatomy and Anthropology, Faculty of Medical and Health Sciences, School of Medicine, Tel-Aviv University, Tel-Aviv 6905126, Israel
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Ahn SH, Park EB, Seo S, Cho Y, Seo DH, Kim SH, Suh YJ, Hong S. Familial Correlation and Heritability of Hand Grip Strength in Korean Adults (Korea National Health and Nutrition Examination Survey 2014 to 2019). Endocrinol Metab (Seoul) 2023; 38:709-719. [PMID: 37933110 PMCID: PMC10765004 DOI: 10.3803/enm.2023.1740] [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: 05/22/2023] [Revised: 09/08/2023] [Accepted: 09/13/2023] [Indexed: 11/08/2023] Open
Abstract
BACKGRUOUND The onset and progression of sarcopenia are highly variable among individuals owing to genetic and environmental factors. However, there are a limited number of studies measuring the heritability of muscle strength in large numbers of parent-adult offspring pairs. We aimed to investigate the familial correlation and heritability of hand grip strength (HGS) among Korean adults. METHODS This family-based cohort study on data from the Korea National Health and Nutrition Examination Survey (2014 to 2019) included 5,004 Koreans aged ≥19 years from 1,527 families. HGS was measured using a digital grip strength dynamometer. Familial correlations of HGS were calculated in different pairs of relatives. Variance component methods were used to estimate heritability. RESULTS The heritability estimate of HGS among Korean adults was 0.154 (standard error, 0.066). Correlation coefficient estimates for HGS between parent-offspring, sibling, and spouse pairs were significant at 0.07, 0.10, and 0.23 (P<0.001, P=0.041, and P<0.001, respectively). The total variance in the HGS phenotype was explained by additive genetic (15.4%), shared environmental (11.0%), and unique environmental (73.6%) influences. The odds of weak HGS significantly increased in the offspring of parents with weak HGS (odds ratio [OR], 1.69-3.10; P=0.027-0.038), especially in daughters (OR, 2.04-4.64; P=0.029-0.034). CONCLUSION HGS exhibits a familial correlation and significant heritable tendency in Korean adults. Therefore, Asian adults, especially women, who have parents with weak HGS, need to pay special attention to their muscle health with the help of healthy environmental stimuli.
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Affiliation(s)
- Seong Hee Ahn
- Department of Endocrinology and Metabolism, Inha University Hospital, Inha University College of Medicine, Incheon, Korea
| | - Eun Byeol Park
- Department of Biostatistics, Korea University College of Medicine, Seoul, Korea
| | - Seongha Seo
- Department of Endocrinology and Metabolism, Inha University Hospital, Inha University College of Medicine, Incheon, Korea
| | - Yongin Cho
- Department of Endocrinology and Metabolism, Inha University Hospital, Inha University College of Medicine, Incheon, Korea
| | - Da Hea Seo
- Department of Endocrinology and Metabolism, Inha University Hospital, Inha University College of Medicine, Incheon, Korea
| | - So Hun Kim
- Department of Endocrinology and Metabolism, Inha University Hospital, Inha University College of Medicine, Incheon, Korea
| | - Young Ju Suh
- Department of Biomedical Sciences, Inha University College of Medicine, Incheon, Korea
| | - Seongbin Hong
- Department of Endocrinology and Metabolism, Inha University Hospital, Inha University College of Medicine, Incheon, Korea
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de Sousa ARS, Ottestad I, Gjevestad GO, Holven KB, Ulven SM, Christensen JJ. Associations between PBMC whole genome transcriptome, muscle strength, muscle mass, and physical performance in healthy home-dwelling older women. GeroScience 2023; 45:3175-3186. [PMID: 37204640 PMCID: PMC10643614 DOI: 10.1007/s11357-023-00819-0] [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: 10/11/2022] [Accepted: 05/07/2023] [Indexed: 05/20/2023] Open
Abstract
Increasing age is accompanied by many changes, including declining functional skeletal muscle health and immune dysfunction. Peripheral blood mononuclear cells (PBMCs) are circulating cells that assemble an immune response, but their whole genome transcriptome has not been studied in the context of age-related muscle health. Consequently, this article explored associations between three muscle variables indicative of functional muscle health - maximum handgrip strength (muscle strength), appendicular skeletal muscle mass index (ASMI, muscle mass), and gait speed (physical performance) - and two groups of bioinformatics-generated PBMC gene expression features (gene expression-estimated leukocyte subset proportions and gene clusters). We analyzed cross-sectional data from 95 home-dwelling healthy women ≥ 70 years, using "cell-type identification by estimating relative subsets of RNA transcripts" (CIBERSORT) to estimate leukocyte subset proportions and "weighted correlation network analysis" (WGCNA) to generate gene clusters. Associations were studied using linear regression models and relevant gene clusters were subjected to gene set enrichment analysis using gene ontology. Gait speed and ASMI associated with CIBERSORT-estimated monocyte proportions (β = - 0.090, 95% CI = (- 0.146, - 0.034), p-value = 0.002 for gait speed, and β = - 0.206, 95% CI = (- 0.385, - 0.028), p-value = 0.024 for ASMI), and gait speed associated with CIBERSORT-estimated M2 macrophage proportions (β = - 0.026, 95% CI = (- 0.043, - 0.008), p-value = 0.004). Furthermore, maximum handgrip strength associated with nine WGCNA gene clusters, enriched in processes related to immune function and skeletal muscle cells (β in the range - 0.007 to 0.008, p-values < 0.05). These results illustrate interactions between skeletal muscle and the immune system, supporting the notion that age-related functional muscle health and the immune system are closely linked.
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Affiliation(s)
- Ana R S de Sousa
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372, Oslo, Norway
| | - Inger Ottestad
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372, Oslo, Norway
- The Clinical Nutrition Outpatient Clinic, Section of Clinical Nutrition, Department of Clinical Service, Division of Cancer Medicine, Oslo University Hospital, Sognsvannsveien 20, 0372, Oslo, Norway
| | - Gyrd O Gjevestad
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372, Oslo, Norway
- TINE SA, Innovation and Marketing, Postboks 113 Kalbakken, 0902, Oslo, Norway
| | - Kirsten B Holven
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372, Oslo, Norway
- Norwegian National Advisory Unit On Familial Hypercholesterolemia, Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Forskningsveien 2B, 0373, Oslo, Norway
| | - Stine M Ulven
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372, Oslo, Norway
| | - Jacob J Christensen
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Sognsvannsveien 9, 0372, Oslo, Norway.
- Norwegian National Advisory Unit On Familial Hypercholesterolemia, Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Forskningsveien 2B, 0373, Oslo, Norway.
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6
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Walczak A, Krenz-Niedbała M, Łukasik S. Insight into age-related changes of the human facial skeleton based on medieval European osteological collection. Sci Rep 2023; 13:20564. [PMID: 37996537 PMCID: PMC10667279 DOI: 10.1038/s41598-023-47776-4] [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: 07/16/2023] [Accepted: 11/18/2023] [Indexed: 11/25/2023] Open
Abstract
Aging changes in the facial skeleton are concentrated mostly in orbits, maxilla and mandible. The aim of this study was to analyze metric traits of the adult viscerocranium in a medieval sample from Cedynia (Poland, Central Europe) and confront the results with literature data for modern populations. It was assumed that diet-related greater biomechanical forces generated during mastication in medieval versus modern times led to slower rate of bone resorption with age. 3D models of the facial skeleton are created for 230 individuals, categorized into young, middle and old adults, and a subgroup of edentulous middle adults is distinguished. Orbits, piriform aperture, maxilla and mandible are measured using Geomagic Studio 12 and analyzed among age categories as well as dentate and edentulous subgroups. The values of the orbital and piriform aperture measurements tend to increase with age and reached statistical significance in males (right orbit height, left orbit width, piriform aperture surface area). In females, maxillary height significantly decrease at right first premolar and first molar, together with height of the right mandibular ramus. In edentulous individuals of both sexes the orbits are wider, and maxillary and mandibular heights are lower than in dentate individuals. This study reveals similar character and direction of the aging process of the facial skeleton in medieval and modern adults, however slower rate of resorptive changes is found in the former sample, which suggests, that diet-related biomechanical forces can influence intensification of the aging processes in the facial skeleton.
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Affiliation(s)
- Anna Walczak
- Institute of Human Biology and Evolution, Faculty of Biology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 6, 61-614, Poznan, Poland.
| | - Marta Krenz-Niedbała
- Institute of Human Biology and Evolution, Faculty of Biology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 6, 61-614, Poznan, Poland
| | - Sylwia Łukasik
- Institute of Human Biology and Evolution, Faculty of Biology, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 6, 61-614, Poznan, Poland
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7
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Tezze C, Sandri M, Tessari P. Anabolic Resistance in the Pathogenesis of Sarcopenia in the Elderly: Role of Nutrition and Exercise in Young and Old People. Nutrients 2023; 15:4073. [PMID: 37764858 PMCID: PMC10535169 DOI: 10.3390/nu15184073] [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: 08/02/2023] [Revised: 09/01/2023] [Accepted: 09/03/2023] [Indexed: 09/29/2023] Open
Abstract
The development of sarcopenia in the elderly is associated with many potential factors and/or processes that impair the renovation and maintenance of skeletal muscle mass and strength as ageing progresses. Among them, a defect by skeletal muscle to respond to anabolic stimuli is to be considered. Common anabolic stimuli/signals in skeletal muscle are hormones (insulin, growth hormones, IGF-1, androgens, and β-agonists such epinephrine), substrates (amino acids such as protein precursors on top, but also glucose and fat, as source of energy), metabolites (such as β-agonists and HMB), various biochemical/intracellular mediators), physical exercise, neurogenic and immune-modulating factors, etc. Each of them may exhibit a reduced effect upon skeletal muscle in ageing. In this article, we overview the role of anabolic signals on muscle metabolism, as well as currently available evidence of resistance, at the skeletal muscle level, to anabolic factors, from both in vitro and in vivo studies. Some indications on how to augment the effects of anabolic signals on skeletal muscle are provided.
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Affiliation(s)
- Caterina Tezze
- Department of Biomedical Sciences, University of Padova, via Ugo Bassi 58/b, 35121 Padova, Italy;
- Veneto Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy
| | - Marco Sandri
- Department of Biomedical Sciences, University of Padova, via Ugo Bassi 58/b, 35121 Padova, Italy;
- Veneto Institute of Molecular Medicine, via Orus 2, 35129 Padova, Italy
- Department of Medicine, McGill University, Montreal, QC H4A 3J1, Canada
| | - Paolo Tessari
- Department of Medicine, University of Padova, via Giustiniani 2, 35128 Padova, Italy
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Malhan D, Schoenrock B, Yalçin M, Blottner D, Relόgio A. Circadian regulation in aging: Implications for spaceflight and life on earth. Aging Cell 2023; 22:e13935. [PMID: 37493006 PMCID: PMC10497835 DOI: 10.1111/acel.13935] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/30/2023] [Accepted: 07/07/2023] [Indexed: 07/27/2023] Open
Abstract
Alterations in the circadian system are characteristic of aging on Earth. With the decline in physiological processes due to aging, several health concerns including vision loss, cardiovascular disorders, cognitive impairments, and muscle mass loss arise in elderly populations. Similar health risks are reported as "red flag" risks among astronauts during and after a long-term Space exploration journey. However, little is known about the common molecular alterations underlying terrestrial aging and space-related aging in astronauts, and controversial conclusions have been recently reported. In light of the regulatory role of the circadian clock in the maintenance of human health, we review here the overlapping role of the circadian clock both on aging on Earth and spaceflight with a focus on the four most affected systems: visual, cardiovascular, central nervous, and musculoskeletal systems. In this review, we briefly introduce the regulatory role of the circadian clock in specific cellular processes followed by alterations in those processes due to aging. We next summarize the known molecular alterations associated with spaceflight, highlighting involved clock-regulated genes in space flown Drosophila, nematodes, small mammals, and astronauts. Finally, we discuss common genes that are altered in terms of their expression due to aging on Earth and spaceflight. Altogether, the data elaborated in this review strengthen our hypothesis regarding the timely need to include circadian dysregulation as an emerging hallmark of aging on Earth and beyond.
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Affiliation(s)
- Deeksha Malhan
- Institute for Systems Medicine and Faculty of Human MedicineMSH Medical School HamburgHamburgGermany
| | - Britt Schoenrock
- Institute of Integrative NeuroanatomyCharité‐Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
| | - Müge Yalçin
- Institute for Systems Medicine and Faculty of Human MedicineMSH Medical School HamburgHamburgGermany
- Institute for Theoretical Biology (ITB)Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
- Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumour Immunology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
| | - Dieter Blottner
- Institute of Integrative NeuroanatomyCharité‐Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
- Neuromuscular System and Neuromuscular SignalingBerlin Center of Space Medicine & Extreme EnvironmentsBerlinGermany
| | - Angela Relόgio
- Institute for Systems Medicine and Faculty of Human MedicineMSH Medical School HamburgHamburgGermany
- Institute for Theoretical Biology (ITB)Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
- Molecular Cancer Research Center (MKFZ), Medical Department of Hematology, Oncology, and Tumour Immunology, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin, and Berlin Institute of HealthBerlinGermany
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9
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Bollen SE, Bass JJ, Wilkinson DJ, Hewison M, Atherton PJ. The impact of genetic variation within the vitamin D pathway upon skeletal muscle function: A systematic review. J Steroid Biochem Mol Biol 2023; 229:106266. [PMID: 36822332 DOI: 10.1016/j.jsbmb.2023.106266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 01/19/2023] [Accepted: 02/02/2023] [Indexed: 02/23/2023]
Abstract
Studies in vitro have demonstrated a key molecular role for 1,25-dihydroxyvitamin D (1,25D) in skeletal muscle function, with vitamin D-deficiency (low serum 25-hydroxyvitamin D, 25D) being associated with muscle pain and weakness. Despite this, an understanding of the overall role of vitamin D in muscle health (particularly the impact of vitamin D-related genetic variants) has yet to be fully resolved, relative to more well-studied targets such as the skeleton. Thus, we aimed to review existing studies that have investigated relationships between skeletal muscle function and single nucleotide polymorphisms (SNPs) within vitamin D-related genes. A systematic review of papers published between January 2000 and June 2022 on PubMed, EMBASE and Web of Science pertaining to association between functionally relevant vitamin D receptor genetic variants and variants within genes of the vitamin D pathway and skeletal muscle function/outcomes was performed. 21 articles were included in the review for final analysis, of which 20 only studied genetic variation of the VDR gene. Of the included articles, 81 % solely included participants aged ≥ 50 years and of the 9 studies that did not only include White individuals, only 2 included Black participants. Within the vitamin D system, the VDR gene is the primary gene of which associations between polymorphisms and muscle function have been investigated. VDR polymorphisms have been significantly associated with muscle phenotypes in two or more studies. Of note A1012G was significantly associated with higher handgrip strength, but the results for other SNPs were notably variable between studies. While the lack of definitive evidence and study heterogeneity makes it difficult to draw conclusions, the findings of this review highlight a need for improvements with regards to the use of more diverse study populations, i.e., inclusion of Black individuals and other people of colour, and expanding research scope beyond the VDR gene.
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Affiliation(s)
- Shelby E Bollen
- MRC/ARUK Centre for Musculoskeletal Ageing Research and National Institute for Health Research (NIHR), Nottingham Biomedical Research Centre (BRC), School of Medicine, University of Nottingham, DE22 3DT UK.
| | - Joseph J Bass
- MRC/ARUK Centre for Musculoskeletal Ageing Research and National Institute for Health Research (NIHR), Nottingham Biomedical Research Centre (BRC), School of Medicine, University of Nottingham, DE22 3DT UK
| | - Daniel J Wilkinson
- MRC/ARUK Centre for Musculoskeletal Ageing Research and National Institute for Health Research (NIHR), Nottingham Biomedical Research Centre (BRC), School of Medicine, University of Nottingham, DE22 3DT UK
| | - Martin Hewison
- Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - Philip J Atherton
- MRC/ARUK Centre for Musculoskeletal Ageing Research and National Institute for Health Research (NIHR), Nottingham Biomedical Research Centre (BRC), School of Medicine, University of Nottingham, DE22 3DT UK
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10
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Gharpure M, Chen J, Nerella R, Vyavahare S, Kumar S, Isales CM, Hamrick M, Adusumilli S, Fulzele S. Sex-specific alteration in human muscle transcriptome with age. GeroScience 2023:10.1007/s11357-023-00795-5. [PMID: 37106281 PMCID: PMC10400750 DOI: 10.1007/s11357-023-00795-5] [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: 01/24/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Sarcopenia is a medical condition that progressively develops with age and results in reduced skeletal muscle mass, alteration in muscle composition, and decreased muscle strength. Several clinical studies suggested that sarcopenia disproportionally affects males and females with age. Despite this knowledge, the molecular mechanism governing the pathophysiology is not well understood in a sex-specific manner. In this study, we utilized human gastrocnemius muscles from males and females to identify differentially regulated genes with age. We found 269 genes with at least a twofold expression difference in the aged muscle transcriptome. Among the female muscle samples, there were 239 differentially regulated genes, and the novel protein-coding genes include KIF20A, PIMREG, MTRNR2L6, TRPV6, EFNA2, RNF24, and SFN. In aged male skeletal muscle, there were 166 differentially regulated genes, and the novel-protein coding genes are CENPK, CDKN2A, BHLHA15, and EPHA. Gene Ontology (GO) enrichment revealed glucose catabolism, NAD metabolic processes, and muscle fiber transition pathways that are involved in aged female skeletal muscle, whereas replicative senescence, cytochrome C release, and muscle composition pathways are disrupted in aged male skeletal muscle. Targeting these novels, differentially regulated genes, and signaling pathways could serve as sex-specific therapeutic targets to combat the age-related onset of sarcopenia and promote healthy aging.
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Affiliation(s)
- Mohini Gharpure
- Department of Medicine, Medical College of Georgia, Augusta University, GA, Augusta, USA
| | - Jie Chen
- Division of Biostatistics and Data Science, Department of Population Health Sciences, Augusta University, Augusta, GA, USA
- Center for Healthy Aging, Augusta University, Augusta, GA, USA
| | - Resheek Nerella
- Department of Medicine, Medical College of Georgia, Augusta University, GA, Augusta, USA
- Augusta University, Augusta, GA, 30912, USA
| | - Sagar Vyavahare
- Department of Medicine, Medical College of Georgia, Augusta University, GA, Augusta, USA
| | - Sandeep Kumar
- Department of Medicine, Medical College of Georgia, Augusta University, GA, Augusta, USA
| | - Carlos M Isales
- Department of Medicine, Medical College of Georgia, Augusta University, GA, Augusta, USA
- Center for Healthy Aging, Augusta University, Augusta, GA, USA
| | - Mark Hamrick
- Center for Healthy Aging, Augusta University, Augusta, GA, USA
- Department of Cell Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | | | - Sadanand Fulzele
- Department of Medicine, Medical College of Georgia, Augusta University, GA, Augusta, USA.
- Center for Healthy Aging, Augusta University, Augusta, GA, USA.
- Department of Cell Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA.
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11
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Gold SL, Raman M, Sands BE, Ungaro R, Sabino J. Review article: Putting some muscle into sarcopenia-the pathogenesis, assessment and clinical impact of muscle loss in patients with inflammatory bowel disease. Aliment Pharmacol Ther 2023; 57:1216-1230. [PMID: 37051722 DOI: 10.1111/apt.17498] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 03/20/2023] [Accepted: 03/21/2023] [Indexed: 04/14/2023]
Abstract
BACKGROUND Sarcopenia, a loss of skeletal muscle mass or function, affects up to 50% of patients with inflammatory bowel disease (IBD) and is associated with poor clinical outcomes including increased hospitalizations, need for surgery and post-operative complications. Despite the high prevalence and clinical significance of sarcopenia in patients with IBD, few patients undergo routine muscle evaluation. AIM The goal of this study was to review the mechanisms of sarcopenia in patients with IBD and understand novel modalities to assess and treat impaired muscle mass or function. METHODS Pubmed and Cochrane databases were searched including articles published up to February 2023 utilizing the following keywords: "inflammatory bowel disease", "IBD", "Crohn's disease", "ulcerative colitis", "sarcopenia", "myosteatosis", "muscle health", and "frailty". RESULTS The pathogenesis of sarcopenia in IBD is not well defined, however, there is evidence supporting the role of malabsorption, reduced protein intake, chronic inflammation, dysbiosis, decreased physical activity, medication effects and hormone signaling from visceral adiposity. Traditional sarcopenia assessment techniques include direct measurements on cross sectional imaging. However, given the time, cost and radiation exposure associated with cross sectional imaging, new bedside tools are now available to estimate muscle mass, including assessment of grip strength, mid upper arm circumference and body composition utilizing bioelectrical impedance analysis. In addition, novel biomarkers for assessing muscle mass and techniques utilizing point of care ultrasound have been proposed to make sarcopenia evaluation more streamlined in the IBD clinic. CONCLUSION Sarcopenia is associated with poor clinical outcomes independent of IBD activity and therefore muscle health should be assessed in all IBD patients at routine intervals. Future studies to better our understanding of the pathophysiology as well as most effective management of sarcopenia in IBD will help guide clinical care and reduce disease related complications.
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Affiliation(s)
- Stephanie L Gold
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Maitreyi Raman
- Department of Medicine, University of Calgary, Calgary, Canada
| | - Bruce E Sands
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Ryan Ungaro
- The Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - João Sabino
- Department of Gastroenterology and Hepatology, University Hospital Leuven, Leuven, Belgium
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12
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Kumar P, Nayak K, Umakanth S, Girish N. Effect of targeted intervention on C-terminal agrin fragment and its association with the components of sarcopenia: a scoping review. Aging Clin Exp Res 2023; 35:1161-1186. [PMID: 36977974 DOI: 10.1007/s40520-023-02396-w] [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: 12/25/2022] [Accepted: 03/15/2023] [Indexed: 03/30/2023]
Abstract
BACKGROUND C-terminal Agrin Fragment (CAF) has emerged as a potent biomarker for identifying sarcopenia. However, the effect of interventions on CAF concentration and the association of CAF with sarcopenia components are unclear. OBJECTIVE To review the association between CAF concentration and muscle mass, muscle strength, and physical performance among individuals with primary and secondary sarcopenia and to synthesize the effect of interventions on the change in the level of CAF concentration. METHODS A systematic literature search was conducted in six electronic databases, and studies were included if they met the selection criteria decided a priori. The data extraction sheet was prepared, validated, and extracted relevant data. RESULTS A total of 5,158 records were found, of which 16 were included. Among studies conducted on individuals with primary sarcopenia, muscle mass was significantly associated with CAF levels, followed by hand grip strength (HGS) and physical performance, with more consistent findings in males. While in secondary sarcopenics, the strongest association was found for HGS and CAF levels, followed by physical performance and muscle mass. CAF concentration was reduced in trials that used functional, dual task, and power training, whereas resistance training and physical activity raised CAF levels. Hormonal therapy did not affect serum CAF concentration. CONCLUSION(S) The association between CAF and sarcopenic assessment parameters varies in primary and secondary sarcopenics. The findings would help practitioners and researchers choose the best training mode/parameters/exercises to reduce CAF levels and, eventually, manage sarcopenia.
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Affiliation(s)
- Prabal Kumar
- Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Kusumakshi Nayak
- Department of Medical Laboratory Technology, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | | | - N Girish
- Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India.
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13
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Chechenova M, Stratton H, Kiani K, Gerberich E, Alekseyenko A, Tamba N, An S, Castillo L, Czajkowski E, Talley C, Bryantsev A. Quantitative model of aging-related muscle degeneration: a Drosophila study. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.19.529145. [PMID: 36865342 PMCID: PMC9980004 DOI: 10.1101/2023.02.19.529145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Changes in the composition and functionality of somatic muscles is a universal hallmark of aging that is displayed by a wide range of species. In humans, complications arising from muscle decline due to sarcopenia aggravate morbidity and mortality rates. The genetics of aging-related deterioration of muscle tissue is not well understood, which prompted us to characterize aging-related muscle degeneration in Drosophila melanogaster (fruit fly), a leading model organism in experimental genetics. Adult flies demonstrate spontaneous degeneration of muscle fibers in all types of somatic muscles, which correlates with functional, chronological, and populational aging. Morphological data imply that individual muscle fibers die by necrosis. Using quantitative analysis, we demonstrate that muscle degeneration in aging flies has a genetic component. Chronic neuronal overstimulation of muscles promotes fiber degeneration rates, suggesting a role for the nervous system in muscle aging. From the other hand, muscles decoupled from neuronal stimulation retain a basal level of spontaneous degeneration, suggesting the presence of intrinsic factors. Based on our characterization, Drosophila can be adopted for systematic screening and validation of genetic factors linked to aging-related muscle loss.
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Affiliation(s)
- Maria Chechenova
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA
| | - Hannah Stratton
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA
| | - Kaveh Kiani
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA
| | - Erik Gerberich
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA
| | - Alesia Alekseyenko
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA
| | - Natasya Tamba
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA
| | - SooBin An
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA
| | - Lizzet Castillo
- Department of Biology, University of New Mexico, Albuquerque, NM
| | - Emily Czajkowski
- Department of Biology, University of New Mexico, Albuquerque, NM
| | - Christina Talley
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA
| | - Anton Bryantsev
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA
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14
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Identification and Characterization of Genomic Predictors of Sarcopenia and Sarcopenic Obesity Using UK Biobank Data. Nutrients 2023; 15:nu15030758. [PMID: 36771461 PMCID: PMC9920138 DOI: 10.3390/nu15030758] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/28/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
The substantial decline in skeletal muscle mass, strength, and gait speed is a sign of severe sarcopenia, which may partly depend on genetic risk factors. So far, hundreds of genome-wide significant single nucleotide polymorphisms (SNPs) associated with handgrip strength, lean mass and walking pace have been identified in the UK Biobank cohort; however, their pleiotropic effects on all three phenotypes have not been investigated. By combining summary statistics of genome-wide association studies (GWAS) of handgrip strength, lean mass and walking pace, we have identified 78 independent SNPs (from 73 loci) associated with all three traits with consistent effect directions. Of the 78 SNPs, 55 polymorphisms were also associated with body fat percentage and 25 polymorphisms with type 2 diabetes (T2D), indicating that sarcopenia, obesity and T2D share many common risk alleles. Follow-up bioinformatic analysis revealed that sarcopenia risk alleles were associated with tiredness, falls in the last year, neuroticism, alcohol intake frequency, smoking, time spent watching television, higher salt, white bread, and processed meat intake; whereas protective alleles were positively associated with bone mineral density, serum testosterone, IGF1, and 25-hydroxyvitamin D levels, height, intelligence, cognitive performance, educational attainment, income, physical activity, ground coffee drinking and healthier diet (muesli, cereal, wholemeal or wholegrain bread, potassium, magnesium, cheese, oily fish, protein, water, fruit, and vegetable intake). Furthermore, the literature data suggest that single-bout resistance exercise may induce significant changes in the expression of 26 of the 73 implicated genes in m. vastus lateralis, which may partly explain beneficial effects of strength training in the prevention and treatment of sarcopenia. In conclusion, we have identified and characterized 78 SNPs associated with sarcopenia and 55 SNPs with sarcopenic obesity in European-ancestry individuals from the UK Biobank.
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15
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He P, Zhou C, Ye Z, Liu M, Zhang Y, Wu Q, Zhang Y, Yang S, Xiaoqin G, Qin X. Walking pace, handgrip strength, age, APOE genotypes, and new-onset dementia: the UK Biobank prospective cohort study. Alzheimers Res Ther 2023; 15:9. [PMID: 36624486 PMCID: PMC9827642 DOI: 10.1186/s13195-022-01158-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 12/29/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND The independent and additive associations of walking pace and grip strength on dementia risk and the potential modifying effects of age, APOE phenotypes, and other dementia risk factors on the walking pace and dementia relationships demand further clarification. We aimed to investigate the independent and additive relationships of walking pace and handgrip strength on the risk of new-onset dementia and examine the potentially modifying effects of age, APOE phenotypes, lifestyle factors, and family history of dementia in the relationships. METHODS A total of 495,700 participants from the UK Biobank, who were free of dementia at baseline, were included in this study. Walking pace was self-defined as slow, average, or brisk. Handgrip strength was assessed by dynamometer and was divided into sex-specific quartiles. The APOE genotypes were determined by a combination variant of rs429358 and rs7412. Other dementia risk factors, including education, physical activity, hypertension, depression, diabetes, and family history of dementia, were also collected. The primary outcome was new-onset all-cause dementia. RESULTS Over a median follow-up duration of 12.0 years, 3986 (0.8%) participants developed new-onset all-cause dementia. Compared with those with slow walking pace, participants with average (HR, 0.61; 95%CI: 0.55-0.68) or brisk (HR, 0.59; 95%CI: 0.52-0.67) walking pace had a significantly lower risk of new-onset all-cause dementia. Moreover, compared with those with both slow walking pace and lower handgrip strength (the first quartile), the lowest risk of new-onset all-cause dementia was observed in participants with both average or brisk walking pace and higher handgrip strength (the 2-4 quartiles) (HR, 0.45; 95%CI: 0.40-0.52). Notably, the negative relationship between walking pace and the risk of new-onset all-cause dementia was significantly reduced as APOE ε4 dosage increased (APOE ε4 dosages = 0 or 1: brisk vs. slow: HR, 0.55; 95%CI: 0.48-0.63; vs. APOE ε4 dosages = 2: brisk vs. slow: HR, 1.14; 95%CI: 0.77-1.68; P for interaction = 0.001) or age increased (< 58 [median]: brisk vs. slow: HR, 0.27; 95%CI: 0.18-0.41; vs. ≥ 58 years: brisk vs. slow: HR, 0.55; 95%CI: 0.48-0.63; P for interaction = 0.007). CONCLUSIONS Walking pace was inversely associated with new-onset dementia in the general population, especially in younger participants and those with lower APOE ε4 dosage. Participants with both faster walking pace and higher handgrip strength had the lowest risk of dementia, suggesting that maintaining both high handgrip strength and fast walking pace may be a more comprehensive strategy for preventing dementia risk.
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Affiliation(s)
- Panpan He
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
| | - Chun Zhou
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
| | - Ziliang Ye
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
| | - Mengyi Liu
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
| | - Yuanyuan Zhang
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
| | - Qimeng Wu
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
| | - Yanjun Zhang
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
| | - Sisi Yang
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
| | - Gan Xiaoqin
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
| | - Xianhui Qin
- grid.416466.70000 0004 1757 959XDivision of Nephrology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515 China ,National Clinical Research Center for Kidney Disease, Guangzhou, 510515 China ,State Key Laboratory of Organ Failure Research, Guangzhou, 510515 China ,grid.508040.90000 0004 9415 435XGuangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangdong Provincial Clinical Research Center for Kidney Disease, Guangzhou, 510515 China
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16
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Pratt J, Whitton L, Ryan A, Juliusdottir T, Dolan J, Conroy J, Narici M, De Vito G, Boreham C. Genes encoding agrin (AGRN) and neurotrypsin (PRSS12) are associated with muscle mass, strength and plasma C-terminal agrin fragment concentration. GeroScience 2023:10.1007/s11357-022-00721-1. [PMID: 36609795 PMCID: PMC10400504 DOI: 10.1007/s11357-022-00721-1] [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: 10/10/2022] [Accepted: 12/26/2022] [Indexed: 01/09/2023] Open
Abstract
Although physiological data suggest that neuromuscular junction (NMJ) dysfunction is a principal mechanism underpinning sarcopenia, genetic studies have implicated few genes involved in NMJ function. Accordingly, we explored whether genes encoding agrin (AGRN) and neurotrypsin (PRSS12) were associated with sarcopenia phenotypes: muscle mass, strength and plasma C-terminal agrin fragment (CAF). PhenoScanner was used to determine if AGRN and/or PRSS12 variants had previously been implicated with sarcopenia phenotypes. For replication, we combined genotype from whole genome sequencing with phenotypic data from 6715 GenoFit participants aged 18-83 years. Dual energy X-ray absorptiometry assessed whole body lean mass (WBLM) and appendicular lean mass (ALM), hand dynamometry determined grip strength and ELISA measured plasma CAF in a subgroup (n = 260). Follow-up analyses included eQTL analyses, carrier analyses, single-variant and gene-burden tests. rs2710873 (AGRN) and rs71608359 (PRSS12) associate with muscle mass and strength phenotypes, respectively, in the UKBB (p = 8.9 × 10-6 and p = 8.4 × 10-6) and GenoFit cohort (p = 0.019 and p = 0.014). rs2710873 and rs71608359 are eQTLs for AGRN and PRSS12, respectively, in ≥ three tissues. Compared to non-carriers, carriers of rs2710873 had 4.0% higher WBLM and ALM (both p < 0.001), and 9.5% lower CAF concentrations (p < 0.001), while carriers of rs71608359 had 2.3% lower grip strength (p = 0.034). AGRN and PRSS12 are associated with muscle strength and mass in single-variant analyses, while PRSS12 has further associations with muscle strength in gene-burden tests. Our findings provide novel evidence of the relevance of AGRN and PRSS12 to sarcopenia phenotypes and support existing physiological data illustrating the importance of the NMJ in maintaining muscle health during ageing.
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Affiliation(s)
- Jedd Pratt
- Institute for Sport and Health, University College Dublin, Dublin, Ireland. .,Genuity Science, Dublin, Ireland. .,Department of Biomedical Sciences, CIR-Myo Myology Centre, Neuromuscular Physiology Laboratory, University of Padova, Padua, Italy.
| | | | | | | | | | | | - Marco Narici
- Department of Biomedical Sciences, CIR-Myo Myology Centre, Neuromuscular Physiology Laboratory, University of Padova, Padua, Italy
| | - Giuseppe De Vito
- Department of Biomedical Sciences, CIR-Myo Myology Centre, Neuromuscular Physiology Laboratory, University of Padova, Padua, Italy
| | - Colin Boreham
- Institute for Sport and Health, University College Dublin, Dublin, Ireland
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17
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Sun H, Shen L, Zhang P, Lin F, Ma J, Wu Y, Yu H, Sun L. Inhibition of High-Temperature Requirement Protein A2 Protease Activity Represses Myogenic Differentiation via UPRmt. Int J Mol Sci 2022; 23:ijms231911761. [PMID: 36233059 PMCID: PMC9569504 DOI: 10.3390/ijms231911761] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/09/2022] [Accepted: 09/14/2022] [Indexed: 12/02/2022] Open
Abstract
Skeletal muscles require muscle satellite cell (MuSC) differentiation to facilitate the replenishment and repair of muscle fibers. A key step in this process is called myogenic differentiation. The differentiation ability of MuSCs decreases with age and can result in sarcopenia. Although mitochondria have been reported to be involved in myogenic differentiation by promoting a bioenergetic remodeling, little is known about the interplay of mitochondrial proteostasis and myogenic differentiation. High-temperature-requirement protein A2 (HtrA2/Omi) is a protease that regulates proteostasis in the mitochondrial intermembrane space (IMS). Mice deficient in HtrA2 protease activity show a distinct phenotype of sarcopenia. To investigate the role of IMS proteostasis during myogenic differentiation, we treated C2C12 myoblasts with UCF101, a specific inhibitor of HtrA2 during differentiation process. A key step in this process is called myogenic differentiation. The differentiation ability of MuSCs decreases with age and can result in sarcopenia. Further, CHOP, p-eIF2α, and other mitochondrial unfolded protein response (UPRmt)-related proteins are upregulated. Therefore, we suggest that imbalance of mitochondrial IMS proteostasis acts via a retrograde signaling pathway to inhibit myogenic differentiation via the UPRmt pathway. These novel mechanistic insights may have implications for the development of new strategies for the treatment of sarcopenia.
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Affiliation(s)
| | | | | | | | | | | | - Huimei Yu
- Correspondence: (H.Y.); (L.S.); Tel.: +86-0431-8561-9495 (H.Y. & L.S.)
| | - Liankun Sun
- Correspondence: (H.Y.); (L.S.); Tel.: +86-0431-8561-9495 (H.Y. & L.S.)
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18
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Xue S, Ge W, Wang K, Mao T, Zhang X, Xu H, Wang Y, Yao J, Li S, Yue M, Ma J, Wang Y, Shentu D, Cui J, Wang L. Association of aging-related genes with prognosis and immune infiltration in pancreatic adenocarcinoma. Front Cell Dev Biol 2022; 10:942225. [PMID: 36003146 PMCID: PMC9393218 DOI: 10.3389/fcell.2022.942225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 06/30/2022] [Indexed: 12/29/2022] Open
Abstract
Pancreatic adenocarcinoma (PAAD) is one of the deadliest malignancies. Aging is described as the degeneration of physiological function, which is complexly correlated with cancer. It is significant to explore the influences of aging-related genes (ARGs) on PAAD. Based on The Cancer Genome Atlas (TCGA) and Genotype-Tissue Expression (GTEx) datasets, we used univariate Cox regression analysis and acquired eight differentially expressed ARGs with prognostic values. Two molecular subtypes were identified based on these ARGs to depict PAAD patients’ overall survival (OS) and immune microenvironments preliminarily. Cluster 1 had a poor OS as well as a worse immune microenvironment. Through least absolute shrinkage and selection operator (LASSO) regression analysis, we constructed a seven-ARG risk signature based on the TCGA dataset and verified it in Gene Expression Omnibus (GEO) and International Cancer Genome Consortium (ICGC) to predict the prognoses, immune microenvironments, signal pathways, tumor mutations, and drug sensitivity of PAAD patients. The high-risk group possessed an unfavorable OS compared with that of the low-risk group. We also verified the independence and clinical availability of the risk signature by Cox regression analyses and the establishment of a nomogram, respectively. The higher risk score was associated with several clinical factors such as higher grade and advanced tumor stage as well as lower immunoscore and cluster 1. The negative associations of risk scores with immune, stroma, and estimate scores proved the terrible immune microenvironment in the high-risk group. Relationships between risk score and immune checkpoint gene expression as well as signal pathways provided several therapeutic targets. PAAD patients in the low-risk group possessed lower tumor mutations as well as a higher susceptibility to axitinib and vorinostat. The high-risk group bore a higher TMB and cisplatin and dasatinib may be better options. We used immunohistochemistry and qPCR to confirm the expression of key ARGs with their influences on OS. In conclusion, we identified two ARG-mediated molecular subtypes and a novel seven-ARG risk signature to predict prognoses, immune microenvironments, signal pathways, tumor mutations, and drug sensitivity of PAAD patients.
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Affiliation(s)
- Shengbai Xue
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Weiyu Ge
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Kexuan Wang
- Department of Nursing, School of Nursing, Xuzhou Medical University, Xuzhou, China
| | - Tiebo Mao
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Xiaofei Zhang
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Haiyan Xu
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yongchao Wang
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jiayu Yao
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Shumin Li
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Ming Yue
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jingyu Ma
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Yanling Wang
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Daiyuan Shentu
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
| | - Jiujie Cui
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
- *Correspondence: Jiujie Cui, ; Liwei Wang,
| | - Liwei Wang
- Department of Oncology, Renji Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
- *Correspondence: Jiujie Cui, ; Liwei Wang,
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19
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Liu X, Yue J. Precision intervention for sarcopenia. PRECISION CLINICAL MEDICINE 2022; 5:pbac013. [PMID: 35694716 PMCID: PMC9172647 DOI: 10.1093/pcmedi/pbac013] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 04/08/2022] [Accepted: 04/28/2022] [Indexed: 02/05/2023] Open
Affiliation(s)
- Xiaolei Liu
- National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jirong Yue
- National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu 610041, China
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20
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Pratt J, De Vito G, Segurado R, Pessanha L, Dolan J, Narici M, Boreham C. Plasma neurofilament light levels associate with muscle mass and strength in middle-aged and older adults: findings from GenoFit. J Cachexia Sarcopenia Muscle 2022; 13:1811-1820. [PMID: 35415973 PMCID: PMC9178157 DOI: 10.1002/jcsm.12979] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 02/08/2022] [Accepted: 02/15/2022] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Efforts to enhance diagnostic measures for sarcopenia have led to an increased focus on the screening utility of blood-based biomarkers. In this regard, circulating neurofilament light chain (NfL) levels are a potent indicator of axonal damage and have been linked with several neurological disorders. However, despite the strong neurogenic contribution to skeletal muscle health, no studies have explored the relevance of NfL concentrations to sarcopenia. With that in mind, this study aimed to examine the association between plasma NfL concentration and sarcopenic domains. METHODS Three hundred adults aged between 50 and 83 years participated to this study (male participants, n = 150; mean age: 64.2 ± 8.7 years and female participants, n = 150; mean age: 63.9 ± 8.3 years). Body composition was assessed using dual-energy X-ray absorptiometry, and a skeletal muscle index (SMI) was calculated. Muscle strength was assessed with hand dynamometry. Sarcopenia was classified using the European Working Group on Sarcopenia in Older People criteria. Plasma NfL concentration was determined using a highly sensitive, enzyme-linked immunosorbent assay. RESULTS Neurofilament light chain levels were associated with grip strength and SMI (P = 0.005 and P = 0.045, respectively) and were significantly elevated in sarcopenic individuals, compared with non-sarcopenic participants (P < 0.001). Individuals with pre-sarcopenia (either low grip strength or low SMI) had significantly higher NfL levels, compared with healthy controls (P = 0.001 and P = 0.006, respectively). Male participants with either low grip strength or low SMI had significantly raised NfL levels (P = 0.006 and P = 0.002, respectively), while in female participants, NfL concentrations were significantly elevated only in those with low grip strength (P = 0.049). NfL concentration displayed acceptable diagnostic accuracy for sarcopenia (area under the curve = 0.726, P < 0.001). CONCLUSIONS Our study clearly demonstrates the indicative pertinence of circulating NfL levels to sarcopenic domains, supporting its potential use as a biomarker of sarcopenia. More studies are needed, however, to further illuminate the diagnostic value of circulating NfL. Future research should explore whether NfL levels are more powerfully linked with muscle strength than mass and whether sex mediates the relevance of NfL concentrations to sarcopenic phenotypes.
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Affiliation(s)
- Jedd Pratt
- Institute for Sport and Health, University College Dublin, Dublin, Ireland.,Genuity Science, Dublin, Ireland
| | - Giuseppe De Vito
- Department of Biomedical Sciences, CIR-Myo Myology Centre, Neuromuscular Physiology Laboratory, University of Padova, Padua, Italy
| | - Ricardo Segurado
- Centre for Support and Training in Analysis and Research, and School of Public Health, Physiotherapy and Sports Sciences, University College Dublin, Dublin, Ireland
| | - Ludmilla Pessanha
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | | | - Marco Narici
- Department of Biomedical Sciences, CIR-Myo Myology Centre, Neuromuscular Physiology Laboratory, University of Padova, Padua, Italy
| | - Colin Boreham
- Institute for Sport and Health, University College Dublin, Dublin, Ireland
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21
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Beneficial Effect of H 2S-Releasing Molecules in an In Vitro Model of Sarcopenia: Relevance of Glucoraphanin. Int J Mol Sci 2022; 23:ijms23115955. [PMID: 35682634 PMCID: PMC9180606 DOI: 10.3390/ijms23115955] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 02/01/2023] Open
Abstract
Sarcopenia is a gradual and generalized skeletal muscle (SKM) syndrome, characterized by the impairment of muscle components and functionality. Hydrogen sulfide (H2S), endogenously formed within the body from the activity of cystathionine-γ-lyase (CSE), cystathionine- β-synthase (CBS), and mercaptopyruvate sulfurtransferase, is involved in SKM function. Here, in an in vitro model of sarcopenia based on damage induced by dexamethasone (DEX, 1 μM, 48 h treatment) in C2C12-derived myotubes, we investigated the protective potential of exogenous and endogenous sources of H2S, i.e., glucoraphanin (30 μM), L-cysteine (150 μM), and 3-mercaptopyruvate (150 μM). DEX impaired the H2S signalling in terms of a reduction in CBS and CSE expression and H2S biosynthesis. Glucoraphanin and 3-mercaptopyruvate but not L-cysteine prevented the apoptotic process induced by DEX. In parallel, the H2S-releasing molecules reduced the oxidative unbalance evoked by DEX, reducing catalase activity, O2− levels, and protein carbonylation. Glucoraphanin, 3-mercaptopyruvate, and L-cysteine avoided the changes in myotubes morphology and morphometrics after DEX treatment. In conclusion, in an in vitro model of sarcopenia, an impairment in CBS/CSE/H2S signalling occurs, whereas glucoraphanin, a natural H2S-releasing molecule, appears more effective for preventing the SKM damage. Therefore, glucoraphanin supplementation could be an innovative therapeutic approach in the management of sarcopenia.
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22
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Tripodi N, Wright B, Lawton A, Zanker J, Feehan J. A clinician's guide to the management of geriatric musculoskeletal disease: Part 2 – Sarcopenia. INT J OSTEOPATH MED 2022. [DOI: 10.1016/j.ijosm.2022.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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23
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Montazeri-Najafabady N, Dabbaghmanesh MH, Nasimi N, Sohrabi Z, Estedlal A, Asmarian N. Importance of TP53 codon 72 and intron 3 duplication 16 bp polymorphisms and their haplotypes in susceptibility to sarcopenia in Iranian older adults. BMC Geriatr 2022; 22:103. [PMID: 35123410 PMCID: PMC8818191 DOI: 10.1186/s12877-022-02765-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 01/13/2022] [Indexed: 12/13/2022] Open
Abstract
Abstract
Background
Sarcopenia is described as age-related progressive skeletal muscle failure that results in marked reduction in the patient’s independence and life quality. In this study, we explored the association of TP53 exon 4 Arg72pro (rs1042522) and Intron 3 16-bp Del/Ins (rs17878362) polymorphisms and their haplotypes with sarcopenia, anthropometric, body composition and biochemical parameters.
Methods
A total of 254 older individuals (65 sarcopenic and 189 healthy) were recruited in this research and genotyped by PCR–RFLP. Linear regression was applied to find the correlation between TP53 polymorphism, and biochemical and anthropometric parameters. The correlation between TP53 polymorphism and haplotypes and the risk of sarcopenia was investigated by logistic regression.
Results
Arg/Pro genotype carriers was at a lower (ORadj = 0.175, 95% CI = 0.068 – 0.447; P < 0.001) risk of sarcopenia compared to the Arg/Arg group. In haplotypes analysis, Arg-Ins (ORadj: 0.484, 95% CI = 0.231 – 1.011, P = 0.043) and Pro-Ins (ORadj: 0.473, 95% CI = 0.210 – 1.068, P = 0.022) haplotypes showed decreased risk of developing sarcopenia. Moreover, in the case of codon 72 polymorphism, skeletal muscle mass, appendicular lean mass (ALM), skeletal muscle mass index (SMI), hand grip strength and Triglycerides, for Intron 3 16-bp Del/Ins polymorphism, albumin, calcium, cholesterol, and LDL were different, and for the haplotypes, skeletal muscle mass, SMI, ALM, HDL and triglycerides were significantly different between groups.
Conclusions
We suggested that the Arg/Pro genotype of the codon 72 polymorphism in exon 4 of TP53, and Arginine-Insertion and Proline-Insertion haplotypes might decrease the risk of sarcopenia in Iranian older adults.
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Frontera WR. Rehabilitation of Older Adults with Sarcopenia: From Cell to Functioning. Prog Rehabil Med 2022; 7:20220044. [PMID: 36118146 PMCID: PMC9437741 DOI: 10.2490/prm.20220044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/16/2022] [Indexed: 11/11/2022] Open
Abstract
The 20th and 21st centuries have witnessed a substantial increase in human life
expectancy and in the number of men and women aged 60 years and older. Aging is associated
with a large number of health conditions, including sarcopenia, which has been the subject
of important research in the past 30 years. Sarcopenia is characterized by an age-related
loss of muscle mass, weakness, and impaired physical performance. The condition can be
diagnosed with a combination of measurements of these three elements. The precise
definition of sarcopenia and the selection of optimal assessment methods have changed
significantly in the past 20 years; nonetheless, the prevalence of sarcopenia in the
general older population is in the range of 5–15%. Molecular and cellular events at the
muscle cell level impact the size and quality of muscles (force adjusted for size). The
active and passive mechanical properties of single muscle fibers are altered by changes in
the structure and function of various cellular elements. Systemic factors such as
inflammation, loss of hormonal influence, and deleterious lifestyle choices also
contribute to sarcopenia. The consequences of sarcopenia include many adverse effects such
as impairments in activities of daily living, falls, loss of independence, and increased
mortality. Several rehabilitative interventions have been tested, and the safest and most
effective is the use of progressive resistance exercise. An increase in dietary protein
intake has synergistic effects. Future research should focus on a consensus definition of
sarcopenia, identification of the best assessment methods, understanding of biological
mechanisms, and testing of innovative interventions.
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Affiliation(s)
- Walter R. Frontera
- Department of Physical Medicine, Rehabilitation, and Sports Medicine/Department of Physiology, University of Puerto Rico School of Medicine, San Juan, Puerto Rico, USA
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25
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Park S. Association between polygenetic risk scores related to sarcopenia risk and their interactions with regular exercise in a large cohort of Korean adults. Clin Nutr 2021; 40:5355-5364. [PMID: 34560606 DOI: 10.1016/j.clnu.2021.09.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/16/2021] [Accepted: 09/03/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND & AIMS Sarcopenia elevates metabolic disorders in the elderly, and genetic and environmental factors influence the risk of sarcopenia. The purpose of the study was to examine the hypothesis that polygenetic variants for sarcopenic risk had interactions with metabolic disorders and lifestyles associated with sarcopenia risk in adults >50 years in a large urban hospital cohort. METHODS Sarcopenia was defined as an appendicular skeletal muscle mass/body weight (SMI) < 29.0% for men and <22.8% for women estimated from participants aged 18-39 years in the KNHANES 2009-2010. Genetic variants were selected using a genome-wide association study for sarcopenia (sarcopenia, n = 1368; control, n = 15,472). The best model showing the gene-gene interactions was selected using a generalized multifactor dimensionality reduction. The polygenic risk scores (PRS) were generated by summing the selected SNP risk alleles in the best model. RESULTS SMI was much higher in the control subjects than the sarcopenia subjects in both genders, and the fat mass index was opposite the SMI. The five-single nucleotide polymorphisms (SNPs) model included FADS2_rs97384, MYO10_rs31574 KCNQ5_rs6453647, DOCK5_rs11135857, and LRP1B_ rs74659977. Sarcopenia risk was positively associated with the PRS of the five-SNP model (ORs = 1.977, 95% CI = 1.634-2.393). The PRS interacted with age (P < 0.0001), metabolic syndrome (P = 0.01), grip strength (P = 0.007), and serum total cholesterol concentrations (P = 0.005) for the sarcopenia risk. There were no interactions of PRS with the lifestyle components except for exercise. CONCLUSION The genetic impact may be offset in the elderly, having metabolic syndrome, high serum total cholesterol concentrations, and high grip strength, but only exercise in the lifestyle factors can overcome the genetic effect. Middle-aged and elderly participants with a genetic risk for sarcopenia may require regular exercise to maintain high grip strength and prevent metabolic syndrome.
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Affiliation(s)
- Sunmin Park
- Dept. of Food and Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan, South Korea.
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26
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Skrzypczak D, Skrzypczak-Zielińska M, Ratajczak AE, Szymczak-Tomczak A, Eder P, Słomski R, Dobrowolska A, Krela-Kaźmierczak I. Myostatin and Follistatin-New Kids on the Block in the Diagnosis of Sarcopenia in IBD and Possible Therapeutic Implications. Biomedicines 2021; 9:biomedicines9101301. [PMID: 34680417 PMCID: PMC8533148 DOI: 10.3390/biomedicines9101301] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/07/2021] [Accepted: 09/15/2021] [Indexed: 12/16/2022] Open
Abstract
Sarcopenia, which is a decrease in muscle strength and quality of muscle tissue, is a common disorder among patients suffering from inflammatory bowel disease. This particular group of patients often presents with malnutrition and shows low physical activity, which increases the risk of sarcopenia. Another important factor in the development of sarcopenia is an imbalanced ratio of myostatin and follistatin, which may stem from inflammation as well as genetic factors. Currently, research in this area continues, and is aimed at identifying an effective medication for the treatment of this condition. Additionally, we still have no sarcopenia markers that can be used for diagnosis. In this paper, we address the role of myostatin and follistatin as potential markers in the diagnosis of sarcopenia in patients with Crohn’s disease and ulcerative colitis, particularly in view of the genetic and biological aspects. We also present data on new perspectives in the pharmacotherapy of sarcopenia (i.e., myostatin inhibitors and gene therapy). Nevertheless, knowledge is still scarce about the roles of follistatin and myostatin in sarcopenia development among patients suffering from inflammatory bowel disease, which warrants further study.
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Affiliation(s)
- Dorota Skrzypczak
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Przybyszewskiego Street 49, 60-355 Poznan, Poland; (A.E.R.); (A.S.-T.); (P.E.); (A.D.)
- Correspondence: (D.S.); (I.K.-K.); Tel.: +48-618691343 (D.S.); +48-601-256-715 (I.K.-K.); Fax: +48-8691-314 (I.K.-K.)
| | - Marzena Skrzypczak-Zielińska
- Institute of Human Genetics, Polish Academy of Sciences Poznan, Strzeszynska Street 32, 60-479 Poznan, Poland; (M.S.-Z.); (R.S.)
| | - Alicja Ewa Ratajczak
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Przybyszewskiego Street 49, 60-355 Poznan, Poland; (A.E.R.); (A.S.-T.); (P.E.); (A.D.)
| | - Aleksandra Szymczak-Tomczak
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Przybyszewskiego Street 49, 60-355 Poznan, Poland; (A.E.R.); (A.S.-T.); (P.E.); (A.D.)
| | - Piotr Eder
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Przybyszewskiego Street 49, 60-355 Poznan, Poland; (A.E.R.); (A.S.-T.); (P.E.); (A.D.)
| | - Ryszard Słomski
- Institute of Human Genetics, Polish Academy of Sciences Poznan, Strzeszynska Street 32, 60-479 Poznan, Poland; (M.S.-Z.); (R.S.)
| | - Agnieszka Dobrowolska
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Przybyszewskiego Street 49, 60-355 Poznan, Poland; (A.E.R.); (A.S.-T.); (P.E.); (A.D.)
| | - Iwona Krela-Kaźmierczak
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Przybyszewskiego Street 49, 60-355 Poznan, Poland; (A.E.R.); (A.S.-T.); (P.E.); (A.D.)
- Correspondence: (D.S.); (I.K.-K.); Tel.: +48-618691343 (D.S.); +48-601-256-715 (I.K.-K.); Fax: +48-8691-314 (I.K.-K.)
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27
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Zhang YZ, Huang LN, Shen XM, Lin J, Zhao FY, Yan SJ. Association between sarcopenic overweight and left ventricular diastolic dysfunction and remodeling in patients with type 2 diabetes. Chin Med J (Engl) 2021; 134:2489-2491. [PMID: 34561327 PMCID: PMC8654449 DOI: 10.1097/cm9.0000000000001759] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Indexed: 11/26/2022] Open
Affiliation(s)
- Yong-Ze Zhang
- Department of Endocrinology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
- Fujian Province Clinical Research Center for Metabolic Diseases, Fuzhou, Fujian 350005, China
- Diabetes Research Institute of Fujian Province, Fuzhou, Fujian 350005, China
- Metabolic Diseases Research Institute, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
| | - Ling-Ning Huang
- Department of Endocrinology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
- Fujian Province Clinical Research Center for Metabolic Diseases, Fuzhou, Fujian 350005, China
- Diabetes Research Institute of Fujian Province, Fuzhou, Fujian 350005, China
- Metabolic Diseases Research Institute, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
| | - Xi-Mei Shen
- Department of Endocrinology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
- Fujian Province Clinical Research Center for Metabolic Diseases, Fuzhou, Fujian 350005, China
- Diabetes Research Institute of Fujian Province, Fuzhou, Fujian 350005, China
- Metabolic Diseases Research Institute, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
| | - Jie Lin
- Department of Endocrinology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
- Diabetes Research Institute of Fujian Province, Fuzhou, Fujian 350005, China
| | - Feng-Ying Zhao
- Department of Endocrinology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
- Fujian Province Clinical Research Center for Metabolic Diseases, Fuzhou, Fujian 350005, China
- Diabetes Research Institute of Fujian Province, Fuzhou, Fujian 350005, China
- Metabolic Diseases Research Institute, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
| | - Sun-Jie Yan
- Department of Endocrinology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
- Fujian Province Clinical Research Center for Metabolic Diseases, Fuzhou, Fujian 350005, China
- Diabetes Research Institute of Fujian Province, Fuzhou, Fujian 350005, China
- Metabolic Diseases Research Institute, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, China
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Jales Neto LH, Hounkpe BW, Fernandes GH, Takayama L, Caparbo VF, Lopes NH, Pereira AC, Pereira RM. Transcriptomic analysis of elderly women with low muscle mass: association with immune system pathway. Aging (Albany NY) 2021; 13:20992-21008. [PMID: 34493690 PMCID: PMC8457609 DOI: 10.18632/aging.203505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/24/2021] [Indexed: 06/13/2023]
Abstract
Despite the well-established association of gene expression deregulation with low muscle mass (LMM), the associated biological mechanisms remain unclear. Transcriptomic studies are capable to identify key mediators in complex diseases. We aimed to identify relevant mediators and biological mechanisms associated with age-related LMM. LMM-associated genes were detected by logistic regression using microarray data of 20 elderly women with LMM and 20 age and race-matched controls extracted from our SPAH Study (GSE152073). We performed weighted gene co-expression analysis (WGCNA) that correlated the identified gene modules with laboratorial characteristics. Gene enrichment analysis was performed and an LMM predictive model was constructed using Support Vector Machine (SVM). Overall, 821 discriminating transcripts clusters were identified (|beta coefficient| >1; p-value <0.01). From this list, 45 predictors of LMM were detected by SVM and validated with 0.7 of accuracy. Our results revealed that the well-described association of inflammation, immunity and metabolic alterations is also relevant at transcriptomic level. WGCNA highlighted a correlation of genes modules involved in immunity pathways with vitamin D level (R = 0.63, p = 0.004) and the Agatston score (R = 0.51, p = 0.02). Our study generated a predicted regulatory network and revealed significant metabolic pathways related to aging processes, showing key mediators that warrant further investigation.
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Affiliation(s)
- Levi H. Jales Neto
- Bone Metabolism Laboratory, Rheumatology Division Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Bidossessi W. Hounkpe
- Bone Metabolism Laboratory, Rheumatology Division Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Georgea H. Fernandes
- Bone Metabolism Laboratory, Rheumatology Division Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Liliam Takayama
- Bone Metabolism Laboratory, Rheumatology Division Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Valéria F. Caparbo
- Bone Metabolism Laboratory, Rheumatology Division Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Neuza H.M. Lopes
- Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Alexandre C. Pereira
- Laboratory of Genetics and Molecular Cardiology, Instituto do Coração (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - Rosa M.R. Pereira
- Bone Metabolism Laboratory, Rheumatology Division Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
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Pimenta I, Mateus H, Rodrigues-Manica S, Pinheiro-Torres R, Neto A, Domingues L, Lage Crespo C, Sardoo A, Machado P, Branco JC, Silva SN, Pimentel-Santos FM. The Effect of ACTN3 and VDR Polymorphisms on Skeletal Muscle Performance in Axial Spondyloarthropathies. Front Genet 2021; 12:688984. [PMID: 34456969 PMCID: PMC8385750 DOI: 10.3389/fgene.2021.688984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 07/12/2021] [Indexed: 12/17/2022] Open
Abstract
Background Spondyloarthritis (SpA) are the most common group of chronic inflammatory rheumatic diseases affecting about 1.5% of the adult Caucasian population. Low back pain is the most common symptom. The aetiopathogenesis of SpA is multifactorial, with well-known genetic and environmental contributions. Furthermore, muscle properties might also be involved in the pathophysiological process and these could be modulated by the genetic background. Alpha-actinin-3 (ACTN3) and Vitamin D receptor (VDR) genes are well-known genes related with muscle performance. Our aim was to analyze four SNPs of these genes and to evaluate their influence in axial SpA (axSpA) susceptibility, phenotype and muscle properties. Methods We performed a pilot study based on case-control approach involving 56 participants: 28 axSpA patients and 28 healthy controls matched by age, gender and levels of physical activity. Clinical, epidemiological and muscle characterization data—muscle physical properties (stiffness, tone, and elasticity), strength, mass, and performance, were collected. Two different muscles were considered for analysis, the Multifidus and Gastrocnemius. Four SNPs of ACTN3 (rs1815739) and VDR (rs2228570, rs731236, and rs7975232), were selected, analyzed and correlated with clinical, epidemiological and muscle characterization data. Results In total, 51 individuals (27 axSpA patients and 24 matched controls) were eligible for further genetic analysis, 66.7% being male and with a mean age of 36 years. Muscle physical properties, muscle strength and muscle mass were similar in both groups; however, axSpA patients showed a decrease in muscle performance. None of the studied SNPs were associated with disease susceptibility/phenotype, muscle physical properties, muscle strength or muscle mass. However, ACTN3 rs1815739 and VDR rs2228570 were shown to be associated with muscle performance. Conclusion Our results suggest an association between ACTN3 and VDR polymorphisms and muscle performance in axSpA.
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Affiliation(s)
- Isabel Pimenta
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Hugo Mateus
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Santiago Rodrigues-Manica
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,Centro Hospitalar de Lisboa Ocidental, Hospital de Egas Moniz, Serviço de Reumatologia, Lisboa, Portugal
| | - Rita Pinheiro-Torres
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,Centro Hospitalar de Lisboa Ocidental, Hospital de Egas Moniz, Serviço de Reumatologia, Lisboa, Portugal
| | - Agna Neto
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,Centro Hospitalar de Lisboa Ocidental, Hospital de Egas Moniz, Serviço de Reumatologia, Lisboa, Portugal
| | - Lúcia Domingues
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,Instituto Politécnico de Setúbal, Escola Superior de Saúde, Setúbal, Portugal
| | - Carolina Lage Crespo
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Atlas Sardoo
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Pedro Machado
- Centre for Rheumatology and Department of Neuromuscular Diseases, University College London, London, United Kingdom
| | - Jaime C Branco
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,Centro Hospitalar de Lisboa Ocidental, Hospital de Egas Moniz, Serviço de Reumatologia, Lisboa, Portugal
| | - Susana N Silva
- Center for Toxicogenomics and Human Health (ToxOmics), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Fernando M Pimentel-Santos
- Chronic Diseases Research Center (CEDOC), NOVA Medical School, Universidade Nova de Lisboa, Lisboa, Portugal.,Centro Hospitalar de Lisboa Ocidental, Hospital de Egas Moniz, Serviço de Reumatologia, Lisboa, Portugal
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ACTN3 Genotypes and Their Relationship with Muscle Mass and Function of Kosovan Adults. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18179135. [PMID: 34501725 PMCID: PMC8431689 DOI: 10.3390/ijerph18179135] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/21/2021] [Accepted: 08/27/2021] [Indexed: 12/21/2022]
Abstract
Maintaining muscle mass and function is important throughout the lifestyle. While environmental factors such as physical activity and healthy nutrition are well investigated, the contribution of genetic factors is still controversial. Therefore, we aimed to investigate the impact of a common ACTN3 polymorphism (rs1815739) on body composition, handgrip strength, knee extensor peak torque, and physical performance (gait speed, 30-s arm curl, 30-s chair stand) in Kosovan adults. In total, 308 participants (160 females and 148 males, age range from 40 to 91 years) took part in this cross-sectional study. Genomic DNA was extracted from saliva and assessed for ACTN3 genotype distribution (41.5% of RR, 53.9% of RX and 4.6% of XX). Genotype allocation did not account for differences in any of the variables. Interestingly, female XX carriers were taller (p = 0.025) and had a higher isokinetic knee extension peak torque (p = 0.024) than the RX+RR group. In males, XX carriers were also taller (p = 0.049) and had a lower BMI (p = 0.026), but did not differ in any of the strength and performance parameters. These results indicate that the ACTN3 R577X polymorphism might exert a sex-specific impact on knee extensor peak torque and BMI.
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Muroya S, Zhang Y, Kinoshita A, Otomaru K, Oshima K, Gotoh Y, Oshima I, Sano M, Roh S, Oe M, Ojima K, Gotoh T. Maternal Undernutrition during Pregnancy Alters Amino Acid Metabolism and Gene Expression Associated with Energy Metabolism and Angiogenesis in Fetal Calf Muscle. Metabolites 2021; 11:metabo11090582. [PMID: 34564398 PMCID: PMC8465837 DOI: 10.3390/metabo11090582] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 12/25/2022] Open
Abstract
To elucidate the mechanisms underlying maternal undernutrition (MUN)-induced fetal skeletal muscle growth impairment in cattle, the longissimus thoracis muscle of Japanese Black fetal calves at 8.5 months in utero was analyzed by an integrative approach with metabolomics and transcriptomics. The pregnant cows were fed on 60% (low-nutrition, LN) or 120% (high-nutrition, HN) of their overall nutritional requirement during gestation. MUN markedly decreased the bodyweight and muscle weight of the fetus. The levels of amino acids (AAs) and arginine-related metabolites including glutamine, gamma-aminobutyric acid (GABA), and putrescine were higher in the LN group than those in the HN group. Metabolite set enrichment analysis revealed that the highly different metabolites were associated with the metabolic pathways of pyrimidine, glutathione, and AAs such as arginine and glutamate, suggesting that MUN resulted in AA accumulation rather than protein accumulation. The mRNA expression levels of energy metabolism-associated genes, such as PRKAA1, ANGPTL4, APLNR, CPT1B, NOS2, NOS3, UCP2, and glycolytic genes were lower in the LN group than in the HN group. The gene ontology/pathway analysis revealed that the downregulated genes in the LN group were associated with glucose metabolism, angiogenesis, HIF-1 signaling, PI3K-Akt signaling, pentose phosphate, and insulin signaling pathways. Thus, MUN altered the levels of AAs and expression of genes associated with energy expenditure, glucose homeostasis, and angiogenesis in the fetal muscle.
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Affiliation(s)
- Susumu Muroya
- Division of Animal Products Research, NARO Institute of Livestock and Grassland Science (NILGS), Tsukuba 305-0901, Ibaraki, Japan; (M.O.); (K.O.)
- Correspondence: (S.M.); (T.G.)
| | - Yi Zhang
- Department of Agricultural Sciences and Natural Resources, Kagoshima University, Korimoto 1-21-24, Kagoshima 890-8580, Japan; (Y.Z.); (A.K.); (I.O.)
| | - Aoi Kinoshita
- Department of Agricultural Sciences and Natural Resources, Kagoshima University, Korimoto 1-21-24, Kagoshima 890-8580, Japan; (Y.Z.); (A.K.); (I.O.)
| | - Kounosuke Otomaru
- Joint Faculty of Veterinary Medicine, Kagoshima University, Korimoto 1-21-24, Kagoshima 890-8580, Japan;
| | - Kazunaga Oshima
- Division of Year-Round Grazing Research, NARO Western Region Agricultural Research Center, 60 Yoshinaga, Ohda 694-0013, Shimane, Japan; (K.O.); (Y.G.)
| | - Yuji Gotoh
- Division of Year-Round Grazing Research, NARO Western Region Agricultural Research Center, 60 Yoshinaga, Ohda 694-0013, Shimane, Japan; (K.O.); (Y.G.)
| | - Ichiro Oshima
- Department of Agricultural Sciences and Natural Resources, Kagoshima University, Korimoto 1-21-24, Kagoshima 890-8580, Japan; (Y.Z.); (A.K.); (I.O.)
| | - Mitsue Sano
- Faculty of Human Culture, University of Shiga Prefecture, 2500 Hassaka-cho, Hikone 522-8533, Shiga, Japan;
| | - Sanggun Roh
- Graduate School of Agricultural Science, Tohoku University, 468-1 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Miyagi, Japan;
| | - Mika Oe
- Division of Animal Products Research, NARO Institute of Livestock and Grassland Science (NILGS), Tsukuba 305-0901, Ibaraki, Japan; (M.O.); (K.O.)
| | - Koichi Ojima
- Division of Animal Products Research, NARO Institute of Livestock and Grassland Science (NILGS), Tsukuba 305-0901, Ibaraki, Japan; (M.O.); (K.O.)
| | - Takafumi Gotoh
- Department of Agricultural Sciences and Natural Resources, Kagoshima University, Korimoto 1-21-24, Kagoshima 890-8580, Japan; (Y.Z.); (A.K.); (I.O.)
- Correspondence: (S.M.); (T.G.)
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Pratt J, De Vito G, Narici M, Boreham C. Neuromuscular Junction Aging: A Role for Biomarkers and Exercise. J Gerontol A Biol Sci Med Sci 2021; 76:576-585. [PMID: 32832976 DOI: 10.1093/gerona/glaa207] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Indexed: 12/13/2022] Open
Abstract
Age-related skeletal muscle degradation known as "sarcopenia" exerts considerable strain on public health systems globally. While the pathogenesis of such atrophy is undoubtedly multifactorial, disruption at the neuromuscular junction (NMJ) has recently gained traction as a key explanatory factor. The NMJ, an essential communicatory link between nerve and muscle, undergoes profound changes with advancing age. Ascertaining whether such changes potentiate the onset of sarcopenia would be paramount in facilitating a timely implementation of targeted therapeutic strategies. Hence, there is a growing level of importance to further substantiate the effects of age on NMJs, in parallel with developing measures to attenuate such changes. As such, this review aimed to establish the current standpoint on age-related NMJ deterioration and consequences for skeletal muscle, while illuminating a role for biomarkers and exercise in ameliorating these alterations. Recent insights into the importance of key biomarkers for NMJ stability are provided, while the stimulative benefits of exercise in preserving NMJ function are demonstrated. Further elucidation of the diagnostic and prognostic relevance of biomarkers, coupled with the therapeutic benefits of regular exercise may be crucial in combating age-related NMJ and skeletal muscle degradation.
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Affiliation(s)
- Jedd Pratt
- Institute for Sport and Health, University College Dublin, Ireland.,Genuity Science, Dublin, Ireland
| | - Giuseppe De Vito
- Department of Biomedical Sciences, CIR-Myo Myology Centre, Neuromuscular Physiology Laboratory, University of Padua, Italy
| | - Marco Narici
- Department of Biomedical Sciences, CIR-Myo Myology Centre, Neuromuscular Physiology Laboratory, University of Padua, Italy
| | - Colin Boreham
- Institute for Sport and Health, University College Dublin, Ireland
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Zhang X, Ye L, Li X, Chen Y, Jiang Y, Li W, Wen Y. The association between sarcopenia susceptibility and polymorphisms of FTO, ACVR2B, and IRS1 in Tibetans. Mol Genet Genomic Med 2021; 9:e1747. [PMID: 34302448 PMCID: PMC8404241 DOI: 10.1002/mgg3.1747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/16/2021] [Accepted: 07/01/2021] [Indexed: 12/11/2022] Open
Abstract
Background Hypoxia within the plateau has a negative effect on skeletal muscle and may play a role in the development of sarcopenia in humans. Tibetans having lived in the Qinghai‐Tibet Plateau for thousands of years, are a high‐risk group for sarcopenia; however, they have a distinctive suite of genetic traits that enable them to tolerate environmental hypoxia and are genetically significantly different from Han Chinese and other lowland populations. Sarcopenia has been consistently found to be associated with single‐nucleotide polymorphisms, but few studies have investigated the role of single‐nucleotide polymorphisms in a range of muscle phenotypes and sarcopenia in Tibetan peoples. Methods Our study aimed to investigate the skeletal muscle mass and fat mass of 160 Tibetans (80 men and 80 women) from Lhasa (altitude of 3600 meters) and analyze the association between the polymorphisms of fat mass and obesity protein (FTO) rs9939609, FTO rs9936385, activin type IIB receptor (ACVR2B) rs2276541, insulin receptor substrate 1 (IRS1) 2943656 and sarcopenia. Result FTO rs9939609 and rs9936385 polymorphisms were associated with lower limb skeletal muscle mass and sarcopenia for Tibetan women, and TT homozygotes had a higher risk for sarcopenia. But ACVR2B rs2276541 and IRS1 2943656 polymorphisms were unassociated with sarcopenia in Tibetan. Conclusion In Tibetans, FTO rs9939609 and rs9936385 polymorphisms were associated with sarcopenia, and ACVR2B rs2276541 and IRS1 2943656 polymorphisms were unassociated with sarcopenia.
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Affiliation(s)
- Xianpeng Zhang
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Liping Ye
- Department of Pathophysiology, Jinzhou Medical University, Jinzhou, China
| | - Xin Li
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Ying Chen
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Yaqiong Jiang
- Tama Community Health Center of Chengguan District, Lhasa, China
| | - Wenhui Li
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
| | - Youfeng Wen
- Institute of Biological Anthropology, Jinzhou Medical University, Jinzhou, China
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Gustafsson T, Ulfhake B. Sarcopenia: What Is the Origin of This Aging-Induced Disorder? Front Genet 2021; 12:688526. [PMID: 34276788 PMCID: PMC8285098 DOI: 10.3389/fgene.2021.688526] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 05/10/2021] [Indexed: 01/03/2023] Open
Abstract
We here review the loss of muscle function and mass (sarcopenia) in the framework of human healthspan and lifespan, and mechanisms involved in aging. The rapidly changing composition of the human population will impact the incidence and the prevalence of aging-induced disorders such as sarcopenia and, henceforth, efforts to narrow the gap between healthspan and lifespan should have top priority. There are substantial knowledge gaps in our understanding of aging. Heritability is estimated to account for only 25% of lifespan length. However, as we push the expected lifespan at birth toward those that we consider long-lived, the genetics of aging may become increasingly important. Linkage studies of genetic polymorphisms to both the susceptibility and aggressiveness of sarcopenia are still missing. Such information is needed to shed light on the large variability in clinical outcomes between individuals and why some respond to interventions while others do not. We here make a case for the concept that sarcopenia has a neurogenic origin and that in manifest sarcopenia, nerve and myofibers enter into a vicious cycle that will escalate the disease progression. We point to gaps in knowledge, for example the crosstalk between the motor axon, terminal Schwann cell, and myofiber in the denervation processes that leads to a loss of motor units and muscle weakness. Further, we argue that the operational definition of sarcopenia should be complemented with dynamic metrics that, along with validated biomarkers, may facilitate early preclinical diagnosis of individuals vulnerable to develop advanced sarcopenia. We argue that preventive measures are likely to be more effective to counter act aging-induced disorders than efforts to treat manifest clinical conditions. To achieve compliance with a prescription of preventive measures that may be life-long, we need to identify reliable predictors to design rational and convincing interventions.
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Affiliation(s)
- Thomas Gustafsson
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Brun Ulfhake
- Division of Clinical Physiology, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden
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He H, Lu H, Liu S, Cai J, Tang X, Mo C, Xu X, Chen Q, Xu M, Nong C, Liu Q, Zhang J, Qin J, Zhang Z. Effects of the association between APOE rs405509 polymorphisms and gene-environment interactions on hand grip strength among middle-aged and elderly people in a rural population in southern China. J Orthop Surg Res 2021; 16:372. [PMID: 34116692 PMCID: PMC8194121 DOI: 10.1186/s13018-021-02522-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 06/03/2021] [Indexed: 08/30/2023] Open
Abstract
Background Hand grip strength is a complex phenotype. The current study aimed to identify the effects of the association between APOE rs405509 polymorphisms and gene-environment interactions on hand grip strength among middle-aged and elderly people in a rural population in Gongcheng, southern China. Methods APOE rs405509 polymorphisms in 1724 participants (695 men and 1029 women, aged 45–97 years old) were genotyped using the Sequenom MassARRAY platform. Statistical analysis was conducted using SPSS 21.0 and Plink 1.90. Results The APOE rs405509 G allele was associated with lower hand grip strength in all participants (β = −1.04, P value <0.001), and the correlation seemed to be even stronger among women. A significant gene-environment interaction was observed between APOE rs405509 and smoking, especially in men. The hand grip strength of male smokers carrying the GG genotype was significantly higher than that of nonsmokers (P value = 0.004). Conclusions APOE rs405509 polymorphisms might be genetic factors that affect hand grip strength in a rural population in Gongcheng, southern China. The APOE rs405509-smoking interaction has an impact on hand grip strength.
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Affiliation(s)
- Haoyu He
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China.,Department of Quality Management, The Affiliated Hospital of Stomatology, Guangxi Medical University, 10 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Huaxiang Lu
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China.,Department of Guangxi Science and Technology Major Project, Guangxi Zhuang Autonomous Region Center for Diseases Control and Prevention, 18 Jinzhou Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Shuzhen Liu
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Jiansheng Cai
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Xu Tang
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Chunbao Mo
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Xia Xu
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Quanhui Chen
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Min Xu
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Chuntao Nong
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Qiumei Liu
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Junling Zhang
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China
| | - Jian Qin
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China.
| | - Zhiyong Zhang
- School of Public Health, Guangxi Medical University, 22 Shuangyong Road, Nanning, Guangxi Zhuang Autonomous Region, China. .,School of Public Health, Guilin Medical University, 20 Lequn Road, Guilin, Guangxi Zhuang Autonomous Region, China.
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Pratt J, De Vito G, Narici M, Segurado R, Pessanha L, Dolan J, Conroy J, Boreham C. Plasma C-Terminal Agrin Fragment as an Early Biomarker for Sarcopenia: Results from the Genofit Study. J Gerontol A Biol Sci Med Sci 2021; 76:2090-2096. [PMID: 33993303 PMCID: PMC8599080 DOI: 10.1093/gerona/glab139] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Indexed: 12/21/2022] Open
Abstract
Barriers associated with direct muscle quantification have prevented a consistent implementation of therapeutic measures for sarcopenia. Recently, the relevance of circulating C-terminal agrin fragment (CAF) as an accessible screening method alternative for sarcopenia has gained credence. Accordingly, this study aimed to verify the pertinence of plasma CAF as a biomarker for sarcopenia. Three hundred healthy adults aged between 50 and 83 years took part in this study. Sarcopenia was diagnosed according to the European Working Group on Sarcopenia in Older People criteria. Body composition was assessed using dual-energy x-ray absorptiometry, while muscle strength was examined using hand dynamometry. Plasma CAF concentrations were determined using a commercially available ELISA kit. CAF concentrations were significantly associated with appendicular lean mass (ALM), but not grip strength (p = .028, p = .575, respectively). Plasma CAF concentrations were significantly elevated in sarcopenic individuals compared to nonsarcopenic (p < .001). Overall, individuals with low grip strength or low ALM displayed significantly higher CAF levels compared to healthy controls, after adjusting for age and body mass index (p = .027, p = .003, respectively). In males, those with low grip strength or low ALM had significantly elevated CAF levels (p = .039, p = .027, respectively), while in females, only those with low ALM had significantly raised CAF concentrations, compared to healthy controls (p = .035). Our findings illuminate the potential relevance of CAF as an accessible biomarker for skeletal muscle health. CAF determination may enhance clinical practice by facilitating more widespread treatment strategies for sarcopenia. Nevertheless, future research is needed to confirm the diagnostic pertinence of CAF concentrations in screening for sarcopenia.
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Affiliation(s)
- Jedd Pratt
- Institute for Sport and Health, University College Dublin, Dublin, Ireland.,Genuity Science, Dublin, Ireland
| | - Giuseppe De Vito
- Department of Biomedical Sciences, CIR-Myo Myology Centre, Neuromuscular Physiology Laboratory, University of Padova, Padua, Italy
| | - Marco Narici
- Department of Biomedical Sciences, CIR-Myo Myology Centre, Neuromuscular Physiology Laboratory, University of Padova, Padua, Italy
| | - Ricardo Segurado
- Centre for Support and Training in Analysis and Research, and School of Public Health, Physiotherapy and Sports Sciences, University College Dublin, Dublin, Ireland
| | - Ludmilla Pessanha
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
| | | | | | - Colin Boreham
- Institute for Sport and Health, University College Dublin, Dublin, Ireland
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Montazeri-Najababady N, Dabbaghmanesh MH, Nasimi N, Sohrabi Z, Chatrabnous N. The association between TP53 rs1625895 polymorphism and the risk of sarcopenic obesity in Iranian older adults: a case-control study. BMC Musculoskelet Disord 2021; 22:438. [PMID: 33985476 PMCID: PMC8120782 DOI: 10.1186/s12891-021-04314-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 04/30/2021] [Indexed: 01/30/2023] Open
Abstract
Background Aging and obesity are the two major global health concerns. Sarcopenia, an age-linked disease, wherein a progressive loss of muscle volume, muscle strength, and physical activity occurs. In this study we evaluated the association of TP53 rs1625895 polymorphism with the susceptibility to sarcopenic obesity in Iranian old-age subjects. Methods Total of 176 old individuals (45 sarcopenic and 131 healthy) were recruited in this research and genotyped by PCR–RFLP. BMI, Skeletal Muscle Mass Index, body composition, Handgrip Strength, Gait Speed (GS), and biochemical parameters were measured. Chi-square test was done for genotypes and alleles frequency. Linear regression was applied to find the correlation between TP53 rs1625895 polymorphism, and biochemical and anthropometric parameters. The correlation between TP53 rs1625895 and the risk of sarcopenia and sarcopenic obesity was investigated by logistic regression. Results G allele was significantly higher in sarcopenic obesity group [P = 0.037, OR (CI 95%) = 1.9 (1.03–3.5)] compared to A allele. BMI (P = 0.049) and LDL (P = 0.04) were significantly differed between genotypes when GG was compared to AA/AG genotype. The results revealed when GG genotype compared to AA/AG genotype in adjusted model for age, the risk of sarcopenic obesity [P value = 0.011, OR (CI 95%); 2.72 (1.25–5.91)] increased. Similarly, GG/AG genotype increased the risk of sarcopenic obesity [P value = 0.028, OR (CI 95%); 2.43 (1.10–5.36)] in adjusted model for age compared to AA genotype. Conclusions We suggested that TP53 rs1625895 polymorphism may increase the risk of sarcopenic obesity in Iranian population.
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Affiliation(s)
| | | | - Nasrin Nasimi
- Nutrition Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Zahra Sohrabi
- Nutrition Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Nazanin Chatrabnous
- Endocrinology and Metabolism Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Kritikaki E, Asterling R, Ward L, Padget K, Barreiro E, C. M. Simoes D. Exercise Training-Induced Extracellular Matrix Protein Adaptation in Locomotor Muscles: A Systematic Review. Cells 2021; 10:cells10051022. [PMID: 33926070 PMCID: PMC8146973 DOI: 10.3390/cells10051022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/18/2021] [Accepted: 04/20/2021] [Indexed: 12/17/2022] Open
Abstract
Exercise training promotes muscle adaptation and remodelling by balancing the processes of anabolism and catabolism; however, the mechanisms by which exercise delays accelerated muscle wasting are not fully understood. Intramuscular extracellular matrix (ECM) proteins are essential to tissue structure and function, as they create a responsive environment for the survival and repair of the muscle fibres. However, their role in muscle adaptation is underappreciated and underinvestigated. The PubMed, COCHRANE, Scopus and CIHNAL databases were systematically searched from inception until February 2021. The inclusion criteria were on ECM adaptation after exercise training in healthy adult population. Evidence from 21 studies on 402 participants demonstrates that exercise training induces muscle remodelling, and this is accompanied by ECM adaptation. All types of exercise interventions promoted a widespread increase in collagens, glycoproteins and proteoglycans ECM transcriptomes in younger and older participants. The ECM controlling mechanisms highlighted here were concerned with myogenic and angiogenic processes during muscle adaptation and remodelling. Further research identifying the mechanisms underlying the link between ECMs and muscle adaptation will support the discovery of novel therapeutic targets and the development of personalised exercise training medicine.
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Affiliation(s)
- Efpraxia Kritikaki
- Faculty of Health and Life Sciences, Northumbria University Newcastle, Newcastle upon Tyne NE1 8ST, UK; (E.K.); (R.A.); (L.W.); (K.P.)
| | - Rhiannon Asterling
- Faculty of Health and Life Sciences, Northumbria University Newcastle, Newcastle upon Tyne NE1 8ST, UK; (E.K.); (R.A.); (L.W.); (K.P.)
| | - Lesley Ward
- Faculty of Health and Life Sciences, Northumbria University Newcastle, Newcastle upon Tyne NE1 8ST, UK; (E.K.); (R.A.); (L.W.); (K.P.)
| | - Kay Padget
- Faculty of Health and Life Sciences, Northumbria University Newcastle, Newcastle upon Tyne NE1 8ST, UK; (E.K.); (R.A.); (L.W.); (K.P.)
| | - Esther Barreiro
- Pulmonology Department, Lung Cancer and Muscle Research Group, Hospital del Mar-IMIM, Parc de Salut Mar, Health and Experimental Sciences Department (CEXS), Universitat Pompeu Fabra (UPF), CIBERES, 08002 Barcelona, Spain;
| | - Davina C. M. Simoes
- Faculty of Health and Life Sciences, Northumbria University Newcastle, Newcastle upon Tyne NE1 8ST, UK; (E.K.); (R.A.); (L.W.); (K.P.)
- Correspondence:
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Mason RS, Rybchyn MS, Brennan-Speranza TC, Fraser DR. Is it reasonable to ignore vitamin D status for musculoskeletal health? Fac Rev 2020; 9:19. [PMID: 33659951 PMCID: PMC7886074 DOI: 10.12703/r/9-19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Severe vitamin D deficiency—25-hydroxyvitamin D (25OHD) concentrations below around 25–30 nmol/L—may lead to growth plate disorganization and mineralization abnormalities in children (rickets) and mineralization defects throughout the skeleton (osteomalacia) and proximal muscle weakness. Both problems are reversed with vitamin D treatment. Apart from this musculoskeletal dysfunction at very low vitamin D levels, there is apparent inconsistency in the available data about whether concentrations of 25OHD below around 50 nmol/L cause muscle function impairment and increase the risk of fracture. This narrative review provides evidence to support the contention that improving vitamin D status, up to around 50 nmol/L, plays a small causal role in optimizing bone and muscle function as well as reducing overall mortality.
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Affiliation(s)
- Rebecca S Mason
- Physiology, Bosch Institute, School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, 2006, Australia
| | - Mark S Rybchyn
- Physiology, Bosch Institute, School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, 2006, Australia
| | - Tara C Brennan-Speranza
- Physiology, Bosch Institute, School of Medical Sciences, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, 2006, Australia
- School of Public Health, Faculty of Medicine and Health, University of Sydney, Sydney, NSW, 2006, Australia
| | - David R Fraser
- Sydney School of Veterinary Science, Faculty of Science, The University of Sydney, NSW 2006, Australia
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40
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Soysal P, Isik AT. Response to “India and Turkey: An underlying common genetic ancestry”. Eur Geriatr Med 2020; 11:883-884. [DOI: 10.1007/s41999-020-00372-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 07/17/2020] [Indexed: 11/24/2022]
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41
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Musarò A. Muscle Homeostasis and Regeneration: From Molecular Mechanisms to Therapeutic Opportunities. Cells 2020; 9:cells9092033. [PMID: 32899793 PMCID: PMC7563331 DOI: 10.3390/cells9092033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 09/03/2020] [Indexed: 12/31/2022] Open
Abstract
The capacity of adult muscle to regenerate in response to injury stimuli represents an important homeostatic process. Regeneration is a highly coordinated program that partially recapitulates the embryonic developmental program and involves the activation of the muscle compartment of stem cells, namely satellite cells, as well as other precursor cells, whose activity is strictly dependent on environmental signals. However, muscle regeneration is severely compromised in several pathological conditions due to either the progressive loss of stem cell populations or to missing signals that limit the damaged tissues from efficiently activating a regenerative program. It is, therefore, plausible that the loss of control over these cells’ fate might lead to pathological cell differentiation, limiting the ability of a pathological muscle to sustain an efficient regenerative process. This Special Issue aims to bring together a collection of original research and review articles addressing the intriguing field of the cellular and molecular players involved in muscle homeostasis and regeneration and to suggest potential therapeutic approaches for degenerating muscle disease.
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Affiliation(s)
- Antonio Musarò
- Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of Rome, Via Antonio Scarpa, 14, 00161 Rome, Italy
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Zhou H, Yuan D, Gao W, Tian J, Sun H, Yu S, Wang J, Sun L. Loss of high-temperature requirement protein A2 protease activity induces mitonuclear imbalance via differential regulation of mitochondrial biogenesis in sarcopenia. IUBMB Life 2020; 72:1659-1679. [PMID: 32353215 DOI: 10.1002/iub.2289] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/06/2020] [Accepted: 03/29/2020] [Indexed: 12/15/2022]
Abstract
Cellular homeostasis requires tight coordination between nucleus and mitochondria, organelles that each possesses their own genomes. Disrupted mitonuclear communication has been found to be implicated in many aging processes. However, little is known about mitonuclear signaling regulator in sarcopenia which is a major contributor to the risk of poor health-related quality of life, disability, and premature death in older people. High-temperature requirement protein A2 (HtrA2/Omi) is a mitochondrial protease and plays an important role in mitochondrial proteostasis. HtrA2mnd2(-/-) mice harboring protease-deficient HtrA2/Omi Ser276Cys missense mutants exhibit premature aging phenotype. Additionally, HtrA2/Omi has been established as a signaling regulator in nervous system and tumors. We therefore asked whether HtrA2/Omi participates in mitonuclear signaling regulation in muscle degeneration. Using motor functional, histological, and molecular biological methods, we characterized the phenotype of HtrA2mnd2(-/-) muscle. Furthermore, we isolated the gastrocnemius muscle of HtrA2mnd2(-/-) mice and determined expression of genes in mitochondrial unfolded protein response (UPRmt ), mitohormesis, electron transport chain (ETC), and mitochondrial biogenesis. Here, we showed that HtrA2/Omi protease deficiency induced denervation-independent skeletal muscle degeneration with sarcopenia phenotypes. Despite mitochondrial hypofunction, upregulation of UPRmt and mitohormesis-related genes and elevated total reactive oxygen species (ROS) production were not observed in HtrA2mnd2(-/-) mice, contrary to previous assumptions that loss of protease activity of HtrA2/Omi would lead to mitochondrial dysfunction as a result of proteostasis disturbance and ROS burst. Instead, we showed that HtrA2/Omi protease deficiency results in different changes between the expression of nuclear DNA- and mitochondrial DNA-encoded ETC subunits, which is in consistent with their transcription factors, nuclear respiratory factors 1 and 2, and coactivator peroxisome proliferator-activated receptor γ coactivator 1α. These results reveal that loss of HtrA2/Omi protease activity induces mitonuclear imbalance via differential regulation of mitochondrial biogenesis in sarcopenia. The novel mechanistic insights may be of importance in developing new therapeutic strategies for sarcopenia.
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Affiliation(s)
- Haohan Zhou
- Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Danni Yuan
- Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Weinan Gao
- Department of Orthopedics, Second Hospital, Jilin University, Changchun, China
| | - Jiayi Tian
- Department of Reproductive Medicine and Center for Prenatal Diagnosis, First Hospital, Jilin University, Changchun, China
| | - Hongyu Sun
- Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Shuang Yu
- Department of Reproductive Medicine, Second Hospital, Jilin University, Changchun, China
| | - Jincheng Wang
- Department of Orthopedics, Second Hospital, Jilin University, Changchun, China
| | - Liankun Sun
- Key Laboratory of Pathobiology, Ministry of Education, Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, China
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