1
|
Kim JW, Kim J, Cho JY, Shin Y, Son H, Sathiyamoorthy S, Kim BS, Kim YO, Kang BC, Kong HJ. Association Between Muscle Growth and Transcription of a Mutant MSTN Gene in Olive Flounder (Paralichthys olivaceus). MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2024; 26:599-608. [PMID: 38683458 DOI: 10.1007/s10126-024-10322-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
Myostatin (MSTN, also known as growth differentiation factor-8 (GDF-8)), a member of the transforming growth factor β (TGF-β) superfamily, functions as a negative regulator of skeletal muscle development and growth. However, it is also expressed in a wide range of tissues in fish and thus may have more diverse roles in this group than in mammals. In this study, we assessed the genome-wide transcriptional expression pattern associated with the CRISPR/Cas9-mutated MSTN gene in the olive flounder (Paralichthys olivaceus) in association with changes in cell proliferation and transportation processes. There were no differences in the hepatosomatic index, and the growth of male and female fish increased in the F1 progeny of the MSTN mutants. Furthermore, the histopathological analysis showed that myostatin editing resulted in a 41.24% increase in back muscle growth and 46.92% increase in belly muscle growth in male flounder compared with normal flounder, and a 16.01% increase in back muscle growth and 14.26% increase in belly muscle growth in female flounder compared with normal flounder. This study demonstrates that editing of the myostatin gene enhances muscle growth in olive flounder, with a notably more pronounced effect observed in males. Consequently, myostatin-edited male flounder could represent a valuable asset for the flounder aquaculture industry.
Collapse
Affiliation(s)
- Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Julan Kim
- Genetics and Breeding Research Center, National Institute of Fisheries Science, Geoje, 53334, Republic of Korea
| | - Ja Young Cho
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Younhee Shin
- Research and Development Center, Insilicogen Inc., Yongin-si, 16954, Republic of Korea
| | - Hyojung Son
- Research and Development Center, Insilicogen Inc., Yongin-si, 16954, Republic of Korea
| | | | - Bo-Seong Kim
- Department of Aquatic Life Medicine, Kunsan National University, Gunsan, 54150, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | | | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
| |
Collapse
|
2
|
Kowalik S, O'reilly M, Niedźwiedź A, Kędzierski W. Equine Asthma Does Not Affect Circulating Myostatin Concentrations in Horses. Animals (Basel) 2024; 14:799. [PMID: 38473184 DOI: 10.3390/ani14050799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 03/14/2024] Open
Abstract
(1) Background: The number of horses suffering from chronic respiratory diseases, resembling human asthma, is increasing but there is still a lack of reliable and accurate methods to detect these disorders. Numerous studies have found elevated plasma concentrations of one of the myokines, namely, myostatin (MSTN), in people suffering from severe asthma. MSTN normally inhibits myoblast proliferation and differentiation through autocrine or paracrine signals. Therefore, given the pathogenesis of asthma, we hypothesize that MSTN could be a useful biomarker of equine asthma. Thus, this study aimed to compare the concentration of MSTN in the blood plasma of fully healthy and asthmatic horses. (2) Methods: A total of 61 horses were clinically examined to confirm or exclude the occurrence of equine asthma, including bronchoalveolar lavage (BAL) fluid cytology performed on 49 horses. This study included three groups of horses, two of which were clinically healthy, and one of which was asthmatic. (3) Results: The mean circulatory MSTN concentration determined using the ELISA method in asthmatic horses was significantly higher than that in clinically healthy young Thoroughbred racehorses (p < 0.05), but it did not differ as compared to the group of healthy, adult leisure horses. (4) Conclusions: The obtained results did not unambiguously support our original hypothesis that MSTM may be a reliable marker for the early diagnosis of equine asthma. To the best of the authors' knowledge, this is the first study to analyze the plasma MSTN concentration in equine asthma patients, and therefore further studies are needed to confirm our novel findings.
Collapse
Affiliation(s)
- Sylwester Kowalik
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, ul. Akademicka 12, 20-033 Lublin, Poland
| | - Maisie O'reilly
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Grunwaldzki Sq. 47, 50-366 Wrocław, Poland
| | - Artur Niedźwiedź
- Department of Internal Medicine and Clinic of Diseases of Horses, Dogs and Cats, Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences, Grunwaldzki Sq. 47, 50-366 Wrocław, Poland
| | - Witold Kędzierski
- Department of Biochemistry, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, ul. Akademicka 12, 20-033 Lublin, Poland
| |
Collapse
|
3
|
Sherazi SAM, Abbasi A, Jamil A, Uzair M, Ikram A, Qamar S, Olamide AA, Arshad M, Fried PJ, Ljubisavljevic M, Wang R, Bashir S. Molecular hallmarks of long non-coding RNAs in aging and its significant effect on aging-associated diseases. Neural Regen Res 2022; 18:959-968. [PMID: 36254975 PMCID: PMC9827784 DOI: 10.4103/1673-5374.355751] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Aging is linked to the deterioration of many physical and cognitive abilities and is the leading risk factor for Alzheimer's disease. The growing aging population is a significant healthcare problem globally that researchers must investigate to better understand the underlying aging processes. Advances in microarrays and sequencing techniques have resulted in deeper analyses of diverse essential genomes (e.g., mouse, human, and rat) and their corresponding cell types, their organ-specific transcriptomes, and the tissue involved in aging. Traditional gene controllers such as DNA- and RNA-binding proteins significantly influence such programs, causing the need to sort out long non-coding RNAs, a new class of powerful gene regulatory elements. However, their functional significance in the aging process and senescence has yet to be investigated and identified. Several recent researchers have associated the initiation and development of senescence and aging in mammals with several well-reported and novel long non-coding RNAs. In this review article, we identified and analyzed the evolving functions of long non-coding RNAs in cellular processes, including cellular senescence, aging, and age-related pathogenesis, which are the major hallmarks of long non-coding RNAs in aging.
Collapse
Affiliation(s)
- Syed Aoun Mehmood Sherazi
- Department of Biological Sciences, Faculty of Basic & Applied Sciences, International Islamic University, Islamabad, Pakistan
| | - Asim Abbasi
- Department of Biological Sciences, University of Arkansas, Fayetteville, AR, USA
| | - Abdullah Jamil
- Department of Pharmacology, Government College University, Faisalabad, Pakistan
| | - Mohammad Uzair
- Department of Biological Sciences, Faculty of Basic & Applied Sciences, International Islamic University, Islamabad, Pakistan
| | - Ayesha Ikram
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | - Shanzay Qamar
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad, Pakistan
| | | | - Muhammad Arshad
- Department of Biological Sciences, Faculty of Basic & Applied Sciences, International Islamic University, Islamabad, Pakistan
| | - Peter J. Fried
- Department of Neurology, Berenson-Allen Center for Noninvasive Brain Stimulation and Division of Cognitive Neurology, Beth Israel Deaconess Medical Center (KS 158), Harvard Medical School, Boston, MA, USA
| | - Milos Ljubisavljevic
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Ran Wang
- Department of Psychiatry, The First Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China,Mental Health Institute of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Shahid Bashir
- Neuroscience Center, King Fahad Specialist Hospital, Dammam, Saudi Arabia,Correspondence to: Shahid Bashir, .
| |
Collapse
|
4
|
Zheng Y, Liu T, Li Q, Li J. Integrated analysis of long non-coding RNAs (lncRNAs) and mRNA expression profiles identifies lncRNA PRKG1-AS1 playing important roles in skeletal muscle aging. Aging (Albany NY) 2021; 13:15044-15060. [PMID: 34051073 PMCID: PMC8221296 DOI: 10.18632/aging.203067] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 04/28/2021] [Indexed: 12/27/2022]
Abstract
This study aimed to identify long non-coding RNAs (lncRNAs) involving in the skeletal muscle aging process. Skeletal muscle samples from old and young subjects were collected for lncRNA-sequencing. Differentially expressed genes (DEGs) and DElncRNAs between young and old groups were identified and a co-expression network was built. Further, a dexamethasone-induced muscle atrophy cell model was established to characterize the function of a critical lncRNA. A total of 424 DEGs, including 271 upregulated genes and 153 downregulated genes as well as 152 DElncRNAs including 76 up-regulated and 76 down-regulated lncRNAs were obtained. Functional analysis demonstrated that the DEGs were significantly related to immune response. Coexpression network demonstrated lncRNA AC004797.1, PRKG1-AS1 and GRPC5D-AS1 were crucial lncRNAs. Their expressions were further validated by qRT-PCR in human skeletal muscle and the muscle atrophy cell model. Further in vitro analysis suggested that knock-down of PRKG1-AS1 could significantly increase cell viability and decrease cell apoptosis. qRT-PCR and western blot analyses demonstrated that knock-down of PRKG1-AS1 could increase the expression of MyoD, MyoG and Mef2c. This study demonstrated that lncRNAs of GPRC5D-AS1, AC004797.1 and PRKG1-AS1 might involve the aging-associated disease processes.
Collapse
Affiliation(s)
- Yan Zheng
- Department of Geriatrics, The First Hospital of Jilin University, Changchun 130021, Jilin, P.R. China
| | - Ting Liu
- Department of Geriatrics, The First Hospital of Jilin University, Changchun 130021, Jilin, P.R. China
| | - Qun Li
- Department of Thyroid Surgery, The First Hospital of Jilin University, Changchun 130021, Jilin, P.R. China
| | - Jie Li
- Department of Geriatrics, The First Hospital of Jilin University, Changchun 130021, Jilin, P.R. China
| |
Collapse
|
5
|
Wilhelmsen A, Tsintzas K, Jones SW. Recent advances and future avenues in understanding the role of adipose tissue cross talk in mediating skeletal muscle mass and function with ageing. GeroScience 2021; 43:85-110. [PMID: 33528828 PMCID: PMC8050140 DOI: 10.1007/s11357-021-00322-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/01/2021] [Indexed: 12/15/2022] Open
Abstract
Sarcopenia, broadly defined as the age-related decline in skeletal muscle mass, quality, and function, is associated with chronic low-grade inflammation and an increased likelihood of adverse health outcomes. The regulation of skeletal muscle mass with ageing is complex and necessitates a delicate balance between muscle protein synthesis and degradation. The secretion and transfer of cytokines, long non-coding RNAs (lncRNAs) and microRNAs (miRNAs), both discretely and within extracellular vesicles, have emerged as important communication channels between tissues. Some of these factors have been implicated in regulating skeletal muscle mass, function, and pathologies and may be perturbed by excessive adiposity. Indeed, adipose tissue participates in a broad spectrum of inter-organ communication and obesity promotes the accumulation of macrophages, cellular senescence, and the production and secretion of pro-inflammatory factors. Pertinently, age-related sarcopenia has been reported to be more prevalent in obesity; however, such effects are confounded by comorbidities and physical activity level. In this review, we provide evidence that adiposity may exacerbate age-related sarcopenia and outline some emerging concepts of adipose-skeletal muscle communication including the secretion and processing of novel myokines and adipokines and the role of extracellular vesicles in mediating inter-tissue cross talk via lncRNAs and miRNAs in the context of sarcopenia, ageing, and obesity. Further research using advances in proteomics, transcriptomics, and techniques to investigate extracellular vesicles, with an emphasis on translational, longitudinal human studies, is required to better understand the physiological significance of these factors, the impact of obesity upon them, and their potential as therapeutic targets in combating muscle wasting.
Collapse
Affiliation(s)
- Andrew Wilhelmsen
- MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, UK
| | - Kostas Tsintzas
- MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, UK.
| | - Simon W Jones
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, Queen Elizabeth Hospital, The University of Birmingham, Birmingham, UK
| |
Collapse
|
6
|
Blaker CL, Ashton DM, Doran N, Little CB, Clarke EC. Sex- and injury-based differences in knee biomechanics in mouse models of post-traumatic osteoarthritis. J Biomech 2020; 114:110152. [PMID: 33285491 DOI: 10.1016/j.jbiomech.2020.110152] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/21/2020] [Accepted: 11/23/2020] [Indexed: 01/14/2023]
Abstract
Sex and joint injury are risk factors implicated in the onset and progression of osteoarthritis (OA). In mouse models of post-traumatic OA (ptOA), the pathogenesis of disease is notably impacted by sex (often worse in males) and injury model (e.g. meniscal versus ligament injury). Increasing ptOA progression and severity is often associated with greater relative instability of the joint but few studies have directly quantified changes in joint mechanics after injury and compared outcomes across multiple models in both male and female mice. Passive anterior-posterior knee biomechanics were evaluated in 10-week-old, male and female C57BL/6J mice. PtOA injury models included destabilisation of the medial meniscus (DMM), anterior cruciate ligament transection (ACLT) or mechanical rupture (ACLR), and combined DMM and ACLT (DMM + ACLT). Sham operated and non-operated controls (NOC) were included for baseline comparisons. The test apparatus loaded hindlimbs at 60° flexion between ± 1 N at 0.5 mm/s (build specifications available for download: https://doi.org/10.17632/z754455x3c.1). Measures of joint laxity (range of motion, neutral zone) and stiffness were calculated. Joint laxity was comparable between male and female mice while joint stiffness was greater in females (P ≤ 0.002, correcting for body-mass and injury-model). Anterior-posterior joint mechanics were minimally altered by DMM but significantly affected by loss of the ACL (P < 0.001), with equivalent changes between ACL-injury models despite different injury mechanisms and adjacent meniscal damage. These findings suggest that despite the important role of joint injury; sex- and model-specific differences in ptOA progression and severity are not primarily driven by altered anterior-posterior knee biomechanics.
Collapse
Affiliation(s)
- Carina L Blaker
- Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia; Raymond Purves Bone and Joint Research Laboratories, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
| | - Dylan M Ashton
- Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
| | - Nathan Doran
- Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia; School of Biomedical Engineering, University of New South Wales, Kensington, New South Wales, Australia
| | - Christopher B Little
- Raymond Purves Bone and Joint Research Laboratories, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia
| | - Elizabeth C Clarke
- Murray Maxwell Biomechanics Laboratory, Institute of Bone and Joint Research, Kolling Institute, Northern Sydney Local Health District, Faculty of Medicine and Health, University of Sydney, St. Leonards, New South Wales, Australia.
| |
Collapse
|
7
|
Fife E, Kostka J, Kroc Ł, Guligowska A, Pigłowska M, Sołtysik B, Kaufman-Szymczyk A, Fabianowska-Majewska K, Kostka T. Relationship of muscle function to circulating myostatin, follistatin and GDF11 in older women and men. BMC Geriatr 2018; 18:200. [PMID: 30165829 PMCID: PMC6117873 DOI: 10.1186/s12877-018-0888-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 08/20/2018] [Indexed: 01/06/2023] Open
Abstract
Background Myostatin, its inhibitor follistatin, and growth/differentiation factor 11 (GDF11) have been proposed as factors that could potentially modify biological aging. The study aimed to test whether there is a relationship between these plasma circulating proteins and muscle strength, power and optimal shortening velocity (υopt) of older adults. Methods The cross-sectional study included 56 women and 45 men aged 60 years and older. Every participant underwent examination which included anthropometric and bioimpedance analysis measurements, functional and cognitive performance tests, muscle strength of upper and lower extremities, muscle power testing with two different methods and blood analyses. Results Women had higher plasma levels of myostatin and GDF11 than men. Men had higher plasma level of follistatin than women. In women, plasma level of myostatin was negatively correlated with left handgrip strength and υopt. Follistatin was negatively correlated with maximum power output (Pmax), power relative to kg of body mass (Pmax∙kg− 1) (friction-loaded cycle ergometer) and power at 70% of the 1-repetition maximum (1RM) strength value (P70%) of leg press (Keiser pneumatic resistance training equipment), and positively correlated with the Timed Up & Go (TUG) test. GDF11 was negatively correlated with body mass, body mass index, waist circumference, fat mass and the percentage of body fat. In men, there were no significant correlations observed between circulating plasma proteins and muscle function measures. Conclusions The circulating plasma myostatin and follistatin are negatively associated with muscle function in older women. There is stronger relationship between these proteins and muscle power than muscle strength. GDF11 has a higher association with the body mass and composition than muscle function in older women.
Collapse
Affiliation(s)
- Elizaveta Fife
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, ul. Pieniny 30, 91-647, Łódź, Poland.
| | - Joanna Kostka
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, ul. Pieniny 30, 91-647, Łódź, Poland.,Department of Physical Medicine, Medical University of Lodz, Hallera 1, Łódź, Poland
| | - Łukasz Kroc
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, ul. Pieniny 30, 91-647, Łódź, Poland
| | - Agnieszka Guligowska
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, ul. Pieniny 30, 91-647, Łódź, Poland
| | - Małgorzata Pigłowska
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, ul. Pieniny 30, 91-647, Łódź, Poland
| | - Bartłomiej Sołtysik
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, ul. Pieniny 30, 91-647, Łódź, Poland
| | | | | | - Tomasz Kostka
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, ul. Pieniny 30, 91-647, Łódź, Poland
| |
Collapse
|
8
|
Abstract
PURPOSE OF REVIEW The worldwide prevalence of obesity is increasing. Obesity is strongly associated with many chronic health conditions that have been shown to improve with weight loss. However, counseling patients on weight loss can be challenging. Identifying specific aspects of weight management may personalize the conversation about weight loss and better address the individual patient's health goals and perceived barriers to change. RECENT FINDINGS Physical and behavioral phenotypes are being identified to better tailor treatment recommendations, given lack of efficacy of currently available interventions. The current review provides a summary of the evidence behind the management of several recognized clinical phenotypes, to include body fat distribution (e.g., central obesity), muscle mass (e.g., sarcopenic obesity of the elderly), and problematic eating behaviors (e.g., cravings). Identifying specific aspects of weight management may personalize the conversation about weight loss and better address the individual patient's health goals and perceived barriers to change.
Collapse
Affiliation(s)
- Meera Shah
- Division of Endocrinology, Diabetes, Metabolism and Nutrition, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA
| | - Ryan T Hurt
- Division of Endocrinology, Diabetes, Metabolism and Nutrition, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA
- Division of General Internal Medicine, Mayo Clinic, Rochester, MN, USA
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, USA
- Division of Gastroenterology, Hepatology and Nutrition, University of Louisville, Louisville, KY, USA
| | - Manpreet S Mundi
- Division of Endocrinology, Diabetes, Metabolism and Nutrition, Mayo Clinic, 200 First St SW, Rochester, MN, 55905, USA.
| |
Collapse
|
9
|
Ueberschlag-Pitiot V, Stantzou A, Messéant J, Lemaitre M, Owens DJ, Noirez P, Roy P, Agbulut O, Metzger D, Ferry A. Gonad-related factors promote muscle performance gain during postnatal development in male and female mice. Am J Physiol Endocrinol Metab 2017; 313:E12-E25. [PMID: 28351832 DOI: 10.1152/ajpendo.00446.2016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 02/22/2017] [Accepted: 03/22/2017] [Indexed: 11/22/2022]
Abstract
To better define the role of male and female gonad-related factors (MGRF, presumably testosterone, and FGRF, presumably estradiol, respectively) on mouse hindlimb skeletal muscle contractile performance/function gain during postnatal development, we analyzed the effect of castration initiated before puberty in male and female mice. We found that muscle absolute and specific (normalized to muscle weight) maximal forces were decreased in 6-mo-old male and female castrated mice compared with age- and sex-matched intact mice, without alteration in neuromuscular transmission. Moreover, castration decreased absolute and specific maximal powers, another important aspect of muscle performance, in 6-mo-old males, but not in females. Absolute maximal force was similarly reduced by castration in 3-mo-old muscle fiber androgen receptor (AR)-deficient and wild-type male mice, indicating that the effect of MGRF was muscle fiber AR independent. Castration reduced the muscle weight gain in 3-mo mice of both sexes and in 6-mo females but not in males. We also found that bone morphogenetic protein signaling through Smad1/5/9 was not altered by castration in atrophic muscle of 3-mo-old mice of both sexes. Moreover, castration decreased the sexual dimorphism regarding muscle performance. Together, these results demonstrated that in the long term, MGRF and FGRF promote muscle performance gain in mice during postnatal development, independently of muscle growth in males, largely via improving muscle contractile quality (force and power normalized), and that MGFR and FGRF also contribute to sexual dimorphism. However, the mechanisms underlying MGFR and FGRF actions remain to be determined.
Collapse
Affiliation(s)
- Vanessa Ueberschlag-Pitiot
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Université de Strasbourg, CNRS UMR7104/INSERM U964, Illkirch, France
| | - Amalia Stantzou
- Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Myology Research Center, UM76 and INSERM U974 and CNRS FRE 3617 and Institut de Myologie, Paris, France
| | - Julien Messéant
- Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Myology Research Center, UM76 and INSERM U974 and CNRS FRE 3617 and Institut de Myologie, Paris, France
| | - Megane Lemaitre
- Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Myology Research Center, UM76 and INSERM U974 and CNRS FRE 3617 and Institut de Myologie, Paris, France
| | - Daniel J Owens
- Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Myology Research Center, UM76 and INSERM U974 and CNRS FRE 3617 and Institut de Myologie, Paris, France
| | - Philippe Noirez
- Institut de Recherche Biomédicale et D'épidemiologie du Sport, EA 7329, Institut National du Sport de l'Expertise et de la Performance, Laboratory of Excellence GR-Ex, Paris, France
- Université Sorbonne Paris Cité, Université Paris Descartes, Paris, France; and
| | - Pauline Roy
- Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Myology Research Center, UM76 and INSERM U974 and CNRS FRE 3617 and Institut de Myologie, Paris, France
| | - Onnik Agbulut
- Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Institut de Biologie Paris-Seine, UMR CNRS 8256, Biological Adaptation and Ageing, Paris, France
| | - Daniel Metzger
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Université de Strasbourg, CNRS UMR7104/INSERM U964, Illkirch, France
| | - Arnaud Ferry
- Sorbonne Universités, Université Pierre et Marie Curie-Paris6, Myology Research Center, UM76 and INSERM U974 and CNRS FRE 3617 and Institut de Myologie, Paris, France;
- Université Sorbonne Paris Cité, Université Paris Descartes, Paris, France; and
| |
Collapse
|
10
|
Stantzou A, Ueberschlag-Pitiot V, Thomasson R, Furling D, Bonnieu A, Amthor H, Ferry A. Effect of constitutive inactivation of the myostatin gene on the gain in muscle strength during postnatal growth in two murine models. Muscle Nerve 2016; 55:254-261. [PMID: 27312354 DOI: 10.1002/mus.25220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 04/20/2016] [Accepted: 06/13/2016] [Indexed: 11/07/2022]
Abstract
INTRODUCTION The effect of constitutive inactivation of the gene encoding myostatin on the gain in muscle performance during postnatal growth has not been well characterized. METHODS We analyzed 2 murine myostatin knockout (KO) models, (i) the Lee model (KOLee ) and (ii) the Grobet model (KOGrobet ), and measured the contraction of tibialis anterior muscle in situ. RESULTS Absolute maximal isometric force was increased in 6-month-old KOLee and KOGrobet mice, as compared to wild-type mice. Similarly, absolute maximal power was increased in 6-month-old KOLee mice. In contrast, specific maximal force (relative maximal force per unit of muscle mass was decreased in all 6-month-old male and female KO mice, except in 6-month-old female KOGrobet mice, whereas specific maximal power was reduced only in male KOLee mice. CONCLUSIONS Genetic inactivation of myostatin increases maximal force and power, but in return it reduces muscle quality, particularly in male mice. Muscle Nerve 55: 254-261, 2017.
Collapse
Affiliation(s)
- Amalia Stantzou
- Université de Versailles Saint-Quentin, Unité de formation et de recherche des sciences de la santé des sciences, Montigny-le-Bretonneux, France
| | - Vanessa Ueberschlag-Pitiot
- Université de Strasbourg, Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
| | - Remi Thomasson
- Université Paris Descartes, Institut de Recherche bio-Médicale et d'Epidémiologie du Sport, Sorbonne Paris Cité, Paris, France
| | - Denis Furling
- Sorbonne Universités CNRS, Centre de Recherche en Myologie, Paris, France
| | - Anne Bonnieu
- INRA, Université Montpellier, Dynamique Musculaire et Métabolisme, Montpellier, France
| | - Helge Amthor
- Université de Versailles Saint-Quentin, Unité de formation et de recherche des sciences de la santé des sciences, Montigny-le-Bretonneux, France
| | - Arnaud Ferry
- Sorbonne Universités CNRS, Centre de Recherche en Myologie, Paris, France
- Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| |
Collapse
|
11
|
Developmental Biology and Regenerative Medicine: Addressing the Vexing Problem of Persistent Muscle Atrophy in the Chronically Torn Human Rotator Cuff. Phys Ther 2016; 96:722-33. [PMID: 26847008 PMCID: PMC4858662 DOI: 10.2522/ptj.20150029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 01/24/2016] [Indexed: 12/18/2022]
Abstract
Persistent muscle atrophy in the chronically torn rotator cuff is a significant obstacle for treatment and recovery. Large atrophic changes are predictive of poor surgical and nonsurgical outcomes and frequently fail to resolve even following functional restoration of loading and rehabilitation. New insights into the processes of muscle atrophy and recovery gained through studies in developmental biology combined with the novel tools and strategies emerging in regenerative medicine provide new avenues to combat the vexing problem of muscle atrophy in the rotator cuff. Moving these treatment strategies forward likely will involve the combination of surgery, biologic/cellular agents, and physical interventions, as increasing experimental evidence points to the beneficial interaction between biologic therapies and physiologic stresses. Thus, the physical therapy profession is poised to play a significant role in defining the success of these combinatorial therapies. This perspective article will provide an overview of the developmental biology and regenerative medicine strategies currently under investigation to combat muscle atrophy and how they may integrate into the current and future practice of physical therapy.
Collapse
|
12
|
Guo W, Miller AD, Pencina K, Wong S, Lee A, Yee M, Toraldo G, Jasuja R, Bhasin S. Joint dysfunction and functional decline in middle age myostatin null mice. Bone 2016; 83:141-148. [PMID: 26549246 PMCID: PMC5461924 DOI: 10.1016/j.bone.2015.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 10/28/2015] [Accepted: 11/03/2015] [Indexed: 12/12/2022]
Abstract
Since its discovery as a potent inhibitor for muscle development, myostatin has been actively pursued as a drug target for age- and disease-related muscle loss. However, potential adverse effects of long-term myostatin deficiency have not been thoroughly investigated. We report herein that male myostatin null mice (mstn(-/-)), in spite of their greater muscle mass compared to wild-type (wt) mice, displayed more significant functional decline from young (3-6months) to middle age (12-15months) than age-matched wt mice, measured as gripping strength and treadmill endurance. Mstn(-/-) mice displayed markedly restricted ankle mobility and degenerative changes of the ankle joints, including disorganization of bone, tendon and peri-articular connective tissue, as well as synovial thickening with inflammatory cell infiltration. Messenger RNA expression of several pro-osteogenic genes was higher in the Achilles tendon-bone insertion in mstn(-/-) mice than wt mice, even at the neonatal age. At middle age, higher plasma concentrations of growth factors characteristic of excessive bone remodeling were found in mstn(-/-) mice than wt controls. These data collectively indicate that myostatin may play an important role in maintaining ankle and wrist joint health, possibly through negative regulation of the pro-osteogenic WNT/BMP pathway.
Collapse
Affiliation(s)
- Wen Guo
- Research Program in Men's Health, Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Andrew D Miller
- Section of Anatomic Pathology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, United States
| | - Karol Pencina
- Research Program in Men's Health, Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Siu Wong
- Department of Medicine, Boston University School of Medicine, Boston, MA 02118, United States
| | - Amanda Lee
- Department of Medicine, Boston University School of Medicine, Boston, MA 02118, United States
| | - Michael Yee
- Department of Medicine, Boston University School of Medicine, Boston, MA 02118, United States
| | - Gianluca Toraldo
- Department of Medicine, Boston University School of Medicine, Boston, MA 02118, United States
| | - Ravi Jasuja
- Research Program in Men's Health, Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Shalender Bhasin
- Research Program in Men's Health, Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, United States
| |
Collapse
|
13
|
Russ DW, Acksel C, Boyd IM, Maynard J, McCorkle KW, Edens NK, Garvey SM. Dietary HMB and β-alanine co-supplementation does not improve in situ muscle function in sedentary, aged male rats. Appl Physiol Nutr Metab 2015; 40:1294-301. [PMID: 26579948 DOI: 10.1139/apnm-2015-0391] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
This study evaluated the effects of dietary β-hydroxy-β-methylbutyrate (HMB) combined with β-alanine (β-Ala) in sedentary, aged male rats. It has been suggested that dietary HMB or β-Ala supplementation may mitigate age-related declines in muscle strength and fatigue resistance. A total of 20 aged Sprague-Dawley rats were studied. At age 20 months, 10 rats were administered a control, purified diet and 10 rats were administered a purified diet supplemented with both HMB and β-Ala (HMB+β-Ala) for 8 weeks (approximately equivalent to 3 and 2.4 g per day human dose). We measured medial gastrocnemius (MG) size, force, fatigability, and myosin composition. We also evaluated an array of protein markers related to muscle mitochondria, protein synthesis and breakdown, and autophagy. HMB+β-Ala had no significant effects on body weight, MG mass, force or fatigability, myosin composition, or muscle quality. Compared with control rats, those fed HMB+β-Ala exhibited a reduced (41%, P = 0.039) expression of muscle RING-finger protein 1 (MURF1), a common marker of protein degradation. Muscle from rats fed HMB+β-Ala also exhibited a 45% reduction (P = 0.023) in p70s6K phosphorylation following fatiguing stimulation. These data suggest that HMB+β-Ala at the dose studied may reduce muscle protein breakdown by reducing MURF1 expression, but has minimal effects on muscle function in this model of uncomplicated aging. They do not, however, rule out potential benefits of HMB+β-Ala co-supplementation at other doses or durations of supplementation in combination with exercise or in situations where extreme muscle protein breakdown and loss of mass occur (e.g., bedrest, cachexia, failure-to-thrive).
Collapse
Affiliation(s)
- David W Russ
- a Laboratory for Integrative Muscle Biology, Division of Physical Therapy, School of Rehabilitation and Communication Sciences, Ohio University, Athens, OH 45701, USA.,b Ohio Musculoskeletal and Neurological Institute (OMNI), Heritage College of Osteopathic Medicine, Athens, OH 45701, USA
| | - Cara Acksel
- a Laboratory for Integrative Muscle Biology, Division of Physical Therapy, School of Rehabilitation and Communication Sciences, Ohio University, Athens, OH 45701, USA.,c Division of Nutrition, School of Applied Health Sciences and Wellness, Ohio University, Athens, OH 45701, USA
| | - Iva M Boyd
- a Laboratory for Integrative Muscle Biology, Division of Physical Therapy, School of Rehabilitation and Communication Sciences, Ohio University, Athens, OH 45701, USA
| | - John Maynard
- a Laboratory for Integrative Muscle Biology, Division of Physical Therapy, School of Rehabilitation and Communication Sciences, Ohio University, Athens, OH 45701, USA
| | - Katherine W McCorkle
- a Laboratory for Integrative Muscle Biology, Division of Physical Therapy, School of Rehabilitation and Communication Sciences, Ohio University, Athens, OH 45701, USA
| | - Neile K Edens
- d Abbott Nutrition R&D, 3300 Stelzer Road, Columbus, OH 43219, USA
| | - Sean M Garvey
- d Abbott Nutrition R&D, 3300 Stelzer Road, Columbus, OH 43219, USA
| |
Collapse
|
14
|
Williams SH, Lozier NR, Montuelle SJ, de Lacalle S. Effect of Postnatal Myostatin Inhibition on Bite Mechanics in Mice. PLoS One 2015; 10:e0134854. [PMID: 26252892 PMCID: PMC4529299 DOI: 10.1371/journal.pone.0134854] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 07/14/2015] [Indexed: 11/25/2022] Open
Abstract
As a negative regulator of muscle size, myostatin (Mstn) impacts the force-production capabilities of skeletal muscles. In the masticatory system, measures of temporalis-stimulated bite forces in constitutive myostatin KOs suggest an absolute, but not relative, increase in jaw-muscle force. Here, we assess the phenotypic and physiologic impact of postnatal myostatin inhibition on bite mechanics using an inducible conditional KO mouse in which myostatin is inhibited with doxycycline (DOX). Given the increased control over the timing of gene inactivation in this model, it may be more clinically-relevant for developing interventions for age-associated changes in the musculoskeletal system. DOX was administered for 12 weeks starting at age 4 months, during which time food intake was monitored. Sex, age and strain-matched controls were given the same food without DOX. Bite forces were recorded just prior to euthanasia after which muscle and skeletal data were collected. Food intake did not differ between control or DOX animals within each sex. DOX males were significantly larger and had significantly larger masseters than controls, but DOX and control females did not differ. Although there was a tendency towards higher absolute bite forces in DOX animals, this was not significant, and bite forces normalized to masseter mass did not differ. Mechanical advantage for incisor biting increased in the DOX group due to longer masseter moment arms, likely due to a more anteriorly-placed masseter insertion. Despite only a moderate increase in bite force in DOX males and none in DOX females, the increase in masseter mass in males indicates a potentially positive impact on jaw muscles. Our data suggest a sexual dimorphism in the role of mstn, and as such investigations into the sex-specific outcomes is warranted.
Collapse
Affiliation(s)
- Susan H. Williams
- Department of Biomedical Sciences, Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio, United States of America
- * E-mail:
| | - Nicholas R. Lozier
- Department of Biomedical Sciences, Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio, United States of America
| | - Stéphane J. Montuelle
- Department of Biomedical Sciences, Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio, United States of America
| | - Sonsoles de Lacalle
- Department of Biomedical Sciences, Ohio University Heritage College of Osteopathic Medicine, Athens, Ohio, United States of America
| |
Collapse
|
15
|
Kim J, Kim KM, Noh JH, Yoon JH, Abdelmohsen K, Gorospe M. Long noncoding RNAs in diseases of aging. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2015; 1859:209-21. [PMID: 26141605 DOI: 10.1016/j.bbagrm.2015.06.013] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 06/13/2015] [Accepted: 06/24/2015] [Indexed: 12/22/2022]
Abstract
Aging is a process during which progressive deteriorating of cells, tissues, and organs over time lead to loss of function, disease, and death. Towards the goal of extending human health span, there is escalating interest in understanding the mechanisms that govern aging-associated pathologies. Adequate regulation of expression of coding and noncoding genes is critical for maintaining organism homeostasis and preventing disease processes. Long noncoding RNAs (lncRNAs) are increasingly recognized as key regulators of gene expression at all levels--transcriptional, post-transcriptional and post-translational. In this review, we discuss our emerging understanding of lncRNAs implicated in aging illnesses. We focus on diseases arising from age-driven impairment in energy metabolism (obesity, diabetes), the declining capacity to respond homeostatically to proliferative and damaging stimuli (cancer, immune dysfunction), and neurodegeneration. We identify the lncRNAs involved in these ailments and discuss the rising interest in lncRNAs as diagnostic and therapeutic targets to ameliorate age-associated pathologies and prolong health. This article is part of a Special Issue entitled: Clues to long noncoding RNA taxonomy1, edited by Dr. Tetsuro Hirose and Dr. Shinichi Nakagawa.
Collapse
Affiliation(s)
- Jiyoung Kim
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Kyoung Mi Kim
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Ji Heon Noh
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Je-Hyun Yoon
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Kotb Abdelmohsen
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA.
| | - Myriam Gorospe
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA.
| |
Collapse
|
16
|
Mechanical Overloading Increases Maximal Force and Reduces Fragility in Hind Limb Skeletal Muscle from Mdx Mouse. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:2012-24. [DOI: 10.1016/j.ajpath.2015.03.027] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 01/30/2015] [Accepted: 03/09/2015] [Indexed: 12/20/2022]
|
17
|
Mendias CL, Lynch EB, Gumucio JP, Flood MD, Rittman DS, Van Pelt DW, Roche SM, Davis CS. Changes in skeletal muscle and tendon structure and function following genetic inactivation of myostatin in rats. J Physiol 2015; 593:2037-52. [PMID: 25640143 DOI: 10.1113/jphysiol.2014.287144] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 01/23/2015] [Indexed: 11/08/2022] Open
Abstract
Myostatin is a negative regulator of skeletal muscle and tendon mass. Myostatin deficiency has been well studied in mice, but limited data are available on how myostatin regulates the structure and function of muscles and tendons of larger animals. We hypothesized that, in comparison to wild-type (MSTN(+/+) ) rats, rats in which zinc finger nucleases were used to genetically inactivate myostatin (MSTN(Δ/Δ) ) would exhibit an increase in muscle mass and total force production, a reduction in specific force, an accumulation of type II fibres and a decrease and stiffening of connective tissue. Overall, the muscle and tendon phenotype of myostatin-deficient rats was markedly different from that of myostatin-deficient mice, which have impaired contractility and pathological changes to fibres and their extracellular matrix. Extensor digitorum longus and soleus muscles of MSTN(Δ/Δ) rats demonstrated 20-33% increases in mass, 35-45% increases in fibre number, 20-57% increases in isometric force and no differences in specific force. The insulin-like growth factor-1 pathway was activated to a greater extent in MSTN(Δ/Δ) muscles, but no substantial differences in atrophy-related genes were observed. Tendons of MSTN(Δ/Δ) rats had a 20% reduction in peak strain, with no differences in mass, peak stress or stiffness. The general morphology and gene expression patterns were similar between tendons of both genotypes. This large rodent model of myostatin deficiency did not have the negative consequences to muscle fibres and extracellular matrix observed in mouse models, and suggests that the greatest impact of myostatin in the regulation of muscle mass may not be to induce atrophy directly, but rather to block hypertrophy signalling.
Collapse
Affiliation(s)
- Christopher L Mendias
- Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA; Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | | | | | | | | | | | | | | |
Collapse
|
18
|
Ferry A, Schuh M, Parlakian A, Mgrditchian T, Valnaud N, Joanne P, Butler-Browne G, Agbulut O, Metzger D. Myofiber androgen receptor promotes maximal mechanical overload-induced muscle hypertrophy and fiber type transition in male mice. Endocrinology 2014; 155:4739-48. [PMID: 25216388 DOI: 10.1210/en.2014-1195] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The first aim of this study was to examine the role of myofiber androgen receptor (AR) in male mice on muscle performance gain and remodeling-induced muscle mechanical overloading (OVL) that mimics resistance training. The response of OVL in mice in which AR is selectively ablated in myofibers (AR(skm-/y)) was compared with that of wild-type (WT) mice. In addition, we determined whether the synthetic anabolic androgen nandrolone administration affects the OVL response. We found that OVL increased absolute maximal force and fatigue resistance in both mouse genotypes (P < .05). However, the absolute maximal force increased more in AR(skm-/y) mice as compared with WT mice (+88% vs +63%) (P < .05). Muscle weight increased less in response to OVL in AR(skm-/y) mice (+54%) than in WT mice (+115%) (P < .05). The fiber number per cross-section similarly increased in both mouse genotypes after OVL (P < .05). In contrast to WT mice, the diameter of the fibers expressing myosin heavy chain (MHC)-2x decreased after OVL in AR(skm-/y) mice (P < .05). The MHC-2b to MHC-2a fiber type transition in response to OVL was reduced in AR(skm-/y) mice as compared with WT mice (P < .05). Finally, nandrolone administration during OVL did not further improve absolute maximal force and fatigue resistance and markedly alter muscle remodeling in both mouse genotypes. Together, our results indicate that myofiber AR is required for a complete response to OVL and that exogenous androgens do not increase muscle performance during intensive remodeling in male mice.
Collapse
Affiliation(s)
- Arnaud Ferry
- Université Pierre et Marie Curie Université Paris 06 (A.F., T.M., N.V., G.B.-B.), Sorbonne Universités, Inserm Unité 974, Centre National de la Recherche Scientifique Unité Mixte de Recherche 7215, Institut de Myologie, F-75013 Paris, France; Université Paris Descartes (A.F.), Sorbonne Paris Cité, F-75006 Paris, France; Institut de Génétique et de Biologie Moléculaire et Cellulaire (M.S., D.M.), Centre National de la Recherche Scientifique Unité Mixte de Recherche 7104, Inserm Unité 964, Université de Strasbourg, Illkirch 67404, France; and Université Pierre et Marie Curie Université Paris 06 (A.P., T.M., P.J., O.A.), Sorbonne Universités, Unité Mixte de Recherche Centre National de la Recherche Scientifique 8256, Biological Adaptation and Ageing, F-75005 Paris, France
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Patel HP, Al-Shanti N, Davies LC, Barton SJ, Grounds MD, Tellam RL, Stewart CE, Cooper C, Sayer AA. Lean mass, muscle strength and gene expression in community dwelling older men: findings from the Hertfordshire Sarcopenia Study (HSS). Calcif Tissue Int 2014; 95:308-16. [PMID: 25055749 DOI: 10.1007/s00223-014-9894-z] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Accepted: 07/04/2014] [Indexed: 12/17/2022]
Abstract
Sarcopenia is associated with adverse health outcomes. This study investigated whether skeletal muscle gene expression was associated with lean mass and grip strength in community-dwelling older men. Utilising a cross-sectional study design, lean muscle mass and grip strength were measured in 88 men aged 68-76 years. Expression profiles of 44 genes implicated in the cellular regulation of skeletal muscle were determined. Serum was analysed for circulating cytokines TNF (tumour necrosis factor), IL-6 (interleukin 6, IFNG (interferon gamma), IL1R1 (interleukin-1 receptor-1). Relationships between skeletal muscle gene expression, circulating cytokines, lean mass and grip strength were examined. Participant groups with higher and lower values of lean muscle mass (n = 18) and strength (n = 20) were used in the analysis of gene expression fold change. Expression of VDR (vitamin D receptor) [fold change (FC) 0.52, standard error for fold change (SE) ± 0.08, p = 0.01] and IFNG mRNA (FC 0.31; SE ± 0.19, p = 0.01) were lower in those with higher lean mass. Expression of IL-6 (FC 0.43; SE ± 0.13, p = 0.02), TNF (FC 0.52; SE ± 0.10, p = 0.02), IL1R1 (FC 0.63; SE ± 0.09, p = 0.04) and MSTN (myostatin) (FC 0.64; SE ± 0.11, p = 0.04) were lower in those with higher grip strength. No other significant changes were observed. Significant negative correlations between serum IL-6 (R = -0.29, p = 0.005), TNF (R = -0.24, p = 0.017) and grip strength were demonstrated. This novel skeletal muscle gene expression study carried out within a well-characterized epidemiological birth cohort has demonstrated that lower expression of VDR and IFNG is associated with higher lean mass, and lower expression of IL-6, TNF, IL1R1 and myostatin is associated with higher grip strength. These findings are consistent with a role of proinflammatory factors in mediating lower muscle strength in community-dwelling older men.
Collapse
Affiliation(s)
- Harnish P Patel
- MRC Lifecourse Epidemiology Unit, Southampton General Hospital, University of Southampton, Tremona Road, Southampton, SO16 6YD, UK,
| | | | | | | | | | | | | | | | | |
Collapse
|
20
|
Pauly M, Chabi B, Favier FB, Vanterpool F, Matecki S, Fouret G, Bonafos B, Vernus B, Feillet-Coudray C, Coudray C, Bonnieu A, Ramonatxo C. Combined Strategies for Maintaining Skeletal Muscle Mass and Function in Aging: Myostatin Inactivation and AICAR-Associated Oxidative Metabolism Induction. J Gerontol A Biol Sci Med Sci 2014; 70:1077-87. [PMID: 25227129 DOI: 10.1093/gerona/glu147] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 07/21/2014] [Indexed: 11/13/2022] Open
Abstract
Myostatin (mstn) blockade, resulting in muscle hypertrophy, is a promising therapy to counteract age-related muscle loss. However, oxidative and mitochondrial deficit observed in young mice with myostatin inhibition could be detrimental with aging. The aim of this study was (a) to bring original data on metabolic and mitochondrial consequences of mstn inhibition in old mice, and (b) to examine whether 4-weeks of AICAR treatment, a pharmacological compound known to upregulate oxidative metabolism, may be useful to improve exercise capacity and mitochondrial deficit of 20-months mstn KO versus wild-type (WT) mice. Our results show that despite the enlarged muscle mass, the oxidative and mitochondrial deficit associated with reduced endurance running capacity is maintained in old mstn KO mice but not worsened by aging. Importantly, AICAR treatment induced a significant beneficial effect on running limit time only in old mstn KO mice, with a marked increase in PGC-1α expression and slight beneficial effects on mitochondrial function. We showed that AICAR effects were autophagy-independent. This study underlines the relevance of aged muscle remodelling by complementary approaches that impact both muscle mass and function, and suggest that mstn inhibition and aerobic metabolism activators should be co-developed for delaying age-related deficits in skeletal muscle.
Collapse
Affiliation(s)
- Marion Pauly
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France INSERM U1046, Physiology and Experimental Medicine Heart-Muscle Unit, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - Béatrice Chabi
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| | - François Bertrand Favier
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| | - Frankie Vanterpool
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| | - Stefan Matecki
- INSERM U1046, Physiology and Experimental Medicine Heart-Muscle Unit, Université Montpellier 1, Université Montpellier 2, Montpellier, France
| | - Gilles Fouret
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| | - Béatrice Bonafos
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| | - Barbara Vernus
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| | - Christine Feillet-Coudray
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| | - Charles Coudray
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| | - Anne Bonnieu
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| | - Christelle Ramonatxo
- INRA, UMR866 Dynamique Musculaire et Métabolisme, Université Montpellier 1, F-34060, Montpellier, France
| |
Collapse
|
21
|
Aerobic exercise affects myostatin expression in aged rat skeletal muscles: a possibility of antiaging effects of aerobic exercise related with pelvic floor muscle and urethral rhabdosphincter. Int Neurourol J 2014; 18:77-85. [PMID: 24987560 PMCID: PMC4076484 DOI: 10.5213/inj.2014.18.2.77] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 05/30/2014] [Indexed: 12/31/2022] Open
Abstract
PURPOSE Aging-induced loss of muscle mass and subsequent reduction of strength is a fundamental cause of frailty, functional decline, and disability. And this may lead to muscular dysfunction, voiding dysfunction, or urinary incontinence due to pelvic muscle weakness induced by aging. Physical exercise has been recommended for the prevention and the treatment of these age-related frail states. We investigated the effects of treadmill exercise on muscle strength, myostatin mRNA and protein expression, and gastrocnemius myocytes proliferation in aged rats to investigate the possible antiaging effects of aerobic exercise on skeletal muscles such as pelvic floor muscles and urethral rhabdosphincter muscle. METHODS In this study, 5-month-old male Sprague-Dawley rats were used as the young-age group (n=20) and 24-month-old rats were used as the old-age group (n=20). Each group was randomly divided into two groups (n=10 in each group): the sedentary and the treadmill exercise group. The rats in the exercise groups were forced to run on a motorized treadmill for 30 minutes, once a day, for 6 weeks. For this study, a weight load test, hematoxylin and eosin staining, real-time and reverse transcription polymerase chain reaction for myostatin mRNA, myostatin western blot, and 5-bromo-2'-deoxyuridine immunohistochemistry were performed in the gastrocnemius muscle. RESULTS The age-induced reduction of muscle mass and strength was associated with a decrease in myocyte proliferation and an increase in myostatin mRNA and protein expression in the gastrocnemius. However, treadmill exercise improved muscle mass and strength through suppression of myostatin mRNA and protein expression, and myocyte proliferation increase in the gastrocnemius against the aging process. CONCLUSIONS Aerobic exercise is a useful strategy for enhancing muscle function against aging-induced loss of skeletal muscle mass and functions.
Collapse
|
22
|
Abstract
PURPOSE OF REVIEW The increasing prevalence of sarcopenic obesity in older adults has heightened interest in identifying the most effective treatment. This review highlights recent progress in the management, with an emphasis on lifestyle interventions and pharmacologic therapy aimed at reversing sarcopenic obesity. RECENT FINDINGS Whereas weight loss and exercise independently reverse sarcopenic obesity, they act synergistically in combination to improve body composition and physical function, beyond which is observed with either intervention alone. Optimizing protein intake appears to have beneficial effects on net muscle protein accretion in older adults. Myostatin inhibition is associated with favorable changes in body composition in animal studies, although experience in humans is relatively limited. Testosterone and growth hormone offer improvements in body composition, but the benefits must be weighed against potential risks of therapy. GHRH-analog therapy shows promise, but further studies are needed in older adults. SUMMARY At present, lifestyle interventions incorporating both diet-induced weight loss and regular exercise appear to be the optimal treatment for sarcopenic obesity. Maintenance of adequate protein intake is also advisable. Ongoing studies will determine whether pharmacologic therapy such as myostatin inhibitors or GHRH analogs have a role in the treatment of sarcopenic obesity.
Collapse
Affiliation(s)
- Matthew F Bouchonville
- Division of Endocrinology, Diabetes, and Metabolism, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | | |
Collapse
|
23
|
Age-dependent alteration in muscle regeneration: the critical role of tissue niche. Biogerontology 2013; 14:273-92. [PMID: 23666344 PMCID: PMC3719007 DOI: 10.1007/s10522-013-9429-4] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 04/29/2013] [Indexed: 12/31/2022]
Abstract
Although adult skeletal muscle is composed of fully differentiated fibers, it retains the capacity to regenerate in response to injury and to modify its contractile and metabolic properties in response to changing demands. The major role in the growth, remodeling and regeneration is played by satellite cells, a quiescent population of myogenic precursor cells that reside between the basal lamina and plasmalemma and that are rapidly activated in response to appropriate stimuli. However, in pathologic conditions or during aging, the complete regenerative program can be precluded by fibrotic tissue formation and resulting in functional impairment of the skeletal muscle. Our study, along with other studies, demonstrated that although the regenerative program can also be impaired by the limited proliferative capacity of satellite cells, this limit is not reached during normal aging, and it is more likely that the restricted muscle repair program in aging is presumably due to missing signals that usually render the damaged muscle a permissive environment for regenerative activity.
Collapse
|