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Li S, Ma J, Pang X, Liang Y, Li X, Wang M, Yuan J, Pan Y, Fu Y, Laher I. Time-dependent Effects of Moderate- and High-intensity Exercises on Myocardial Transcriptomics. Int J Sports Med 2022; 43:1214-1225. [PMID: 36063823 DOI: 10.1055/a-1885-4115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The heart is a highly adaptable organ that responds to changes in functional requirements due to exposure to internal and external stimuli. Physical exercise has unique stimulatory effects on the myocardium in both healthy individuals and those with health disorders, where the effects are primarily determined by the intensity and recovery time of exercise. We investigated the time-dependent effects of different exercise intensities on myocardial transcriptional expression in rats. Moderate intensity exercise induced more differentially expressed genes in the myocardium than high intensity exercise, while 16 differentially expressed genes were down-regulated by moderate intensity exercise but up-regulated by high intensity exercise at 12 h post- exercise. Both Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analysis indicated that moderate intensity exercise specifically regulated gene expression related to heart adaptation, energy metabolism, and oxidative stress, while high intensity exercise specifically regulated gene expression related to immunity, inflammation, and apoptosis. Moreover, there was increased expression of Tbx5, Casq1, Igsf1, and Ddah1 at all time points after moderate intensity exercise, while there was increased expression of Card9 at all time points after high intensity exercise. Our study provides a better understanding of the intensity dependent effects of physical exercise of the molecular mechanisms of cardiac adaptation to physical exercise.
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Affiliation(s)
- Shunchang Li
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Jiacheng Ma
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Xiaoli Pang
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Yu Liang
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Xiaole Li
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Manda Wang
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Jinghan Yuan
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Yanrong Pan
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Yu Fu
- Institute of Sports Medicine and Health, Chengdu Sport University, Chengdu, China
| | - Ismail Laher
- Anesthesiology, Pharmacology and Therapeutics, The University of British Columbia, Vancouver, Canada
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Yang L, Yuan F, Rong L, Cai J, Yang S, Jia Z, Li S. Transcriptomic and Metabolomic Profile Analysis of Muscles Reveals Pathways and Biomarkers Involved in Flavor Differences between Caged and Cage-Free Chickens. Foods 2022; 11:foods11182890. [PMID: 36141015 PMCID: PMC9498551 DOI: 10.3390/foods11182890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/04/2022] [Accepted: 09/15/2022] [Indexed: 12/03/2022] Open
Abstract
The cage-free system has gained a lot of interest in recent years because it can offer chickens more freedom and is easier to manage compared with free-range rearing systems, but few studies have focused on the effect of the cage-free rearing system on meat quality and flavor. In this study, 44 Jianghan chickens were reared in caged or cage-free systems to explore the effect of different rearing systems on meat-eating quality. Sensory evaluation of cooked muscles showed that the leg muscle aroma, juiciness, and flavor intensity significantly improved by the cage-free rearing. The cage-free hens had significantly lower body weight, abdominal fat percentage, and meat fat content, but higher meat moisture content. The cage-free group had brighter breast muscle and redder leg muscle color 24 h after slaughter. Transcriptomic and metabolomic profile analysis of the leg muscle samples showed that the cage-free rearing changed biosynthesis pathways associated with glycogen metabolism, lipid and fatty acid biosynthesis and transport, muscle cellular type, and cellular components, which were related to raw meat quality. Different rearing systems also resulted in differences in glycolipid metabolism, lipid metabolism, and altered levels of intramuscular fat content and other flavor precursors. Pathways such as glycerolipid metabolism, adipocytokine signaling, and metabonomic pathways such as linoleic acid, glycerophospholipid, arginine, proline, and β-alanine metabolism may be responsible for the meat quality and flavor change.
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Affiliation(s)
- Liubin Yang
- College of Food Sciences & Technology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Fang Yuan
- College of Food Sciences & Technology (Ministry of Education), Huazhong Agricultural University, Wuhan 430070, China
| | - Li Rong
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Jinping Cai
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Sendong Yang
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Zijia Jia
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
| | - Shijun Li
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
- Key Laboratory of Smart Farming for Agricultural Animals, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China
- Correspondence: ; Tel.: +86-27-8728-2091; Fax: +86-27-8728-0408
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Bizjak DA, Zügel M, Treff G, Winkert K, Jerg A, Hudemann J, Mooren FC, Krüger K, Nieß A, Steinacker JM. Effects of Training Status and Exercise Mode on Global Gene Expression in Skeletal Muscle. Int J Mol Sci 2021; 22:ijms222212578. [PMID: 34830458 PMCID: PMC8674764 DOI: 10.3390/ijms222212578] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/14/2021] [Accepted: 11/17/2021] [Indexed: 12/29/2022] Open
Abstract
The aim of this study was to investigate differences in skeletal muscle gene expression of highly trained endurance and strength athletes in comparison to untrained individuals at rest and in response to either an acute bout of endurance or strength exercise. Endurance (ET, n = 8, VO2max 67 ± 9 mL/kg/min) and strength athletes (ST, n = 8, 5.8 ± 3.0 training years) as well as untrained controls (E-UT and S-UT, each n = 8) performed an acute endurance or strength exercise test. One day before testing (Pre), 30 min (30'Post) and 3 h (180'Post) afterwards, a skeletal muscle biopsy was obtained from the m. vastus lateralis. Skeletal muscle mRNA was isolated and analyzed by Affymetrix-microarray technology. Pathway analyses were performed to evaluate the effects of training status (trained vs. untrained) and exercise mode-specific (ET vs. ST) transcriptional responses. Differences in global skeletal muscle gene expression between trained and untrained were smaller compared to differences in exercise mode. Maximum differences between ET and ST were found between Pre and 180'Post. Pathway analyses showed increased expression of exercise-related genes, such as nuclear transcription factors (NR4A family), metabolism and vascularization (PGC1-α and VEGF-A), and muscle growth/structure (myostatin, IRS1/2 and HIF1-α. The most upregulated genes in response to acute endurance or strength exercise were the NR4A genes (NR4A1, NR4A2, NR4A3). The mode of acute exercise had a significant effect on transcriptional regulation Pre vs. 180'Post. In contrast, the effect of training status on human skeletal muscle gene expression profiles was negligible compared to strength or endurance specialization. The highest variability in gene expression, especially for the NR4A-family, was observed in trained individuals at 180'Post. Assessment of these receptors might be suitable to obtain a deeper understanding of skeletal muscle adaptive processes to develop optimized training strategies.
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Affiliation(s)
- Daniel A. Bizjak
- Division of Sports and Rehabilitation Medicine, Department of Internal Medicine II, University of Ulm, 89075 Ulm, Germany; (M.Z.); (G.T.); (K.W.); (A.J.); (J.M.S.)
- Correspondence: ; Tel.: +49-73150045368; Fax: +49-73150045301
| | - Martina Zügel
- Division of Sports and Rehabilitation Medicine, Department of Internal Medicine II, University of Ulm, 89075 Ulm, Germany; (M.Z.); (G.T.); (K.W.); (A.J.); (J.M.S.)
| | - Gunnar Treff
- Division of Sports and Rehabilitation Medicine, Department of Internal Medicine II, University of Ulm, 89075 Ulm, Germany; (M.Z.); (G.T.); (K.W.); (A.J.); (J.M.S.)
| | - Kay Winkert
- Division of Sports and Rehabilitation Medicine, Department of Internal Medicine II, University of Ulm, 89075 Ulm, Germany; (M.Z.); (G.T.); (K.W.); (A.J.); (J.M.S.)
| | - Achim Jerg
- Division of Sports and Rehabilitation Medicine, Department of Internal Medicine II, University of Ulm, 89075 Ulm, Germany; (M.Z.); (G.T.); (K.W.); (A.J.); (J.M.S.)
| | - Jens Hudemann
- Department of Sports Medicine, University Hospital Tübingen, 72074 Tübingen, Germany; (J.H.); (A.N.)
| | - Frank C. Mooren
- Department of Medicine, Faculty of Health, University of Witten/Herdecke, 58455 Witten, Germany;
| | - Karsten Krüger
- Department of Exercise Physiology and Sports Therapy, University of Gießen, 35394 Gießen, Germany;
| | - Andreas Nieß
- Department of Sports Medicine, University Hospital Tübingen, 72074 Tübingen, Germany; (J.H.); (A.N.)
| | - Jürgen M. Steinacker
- Division of Sports and Rehabilitation Medicine, Department of Internal Medicine II, University of Ulm, 89075 Ulm, Germany; (M.Z.); (G.T.); (K.W.); (A.J.); (J.M.S.)
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Creation of a gene expression portrait of depression and its application for identifying potential treatments. Sci Rep 2021; 11:3829. [PMID: 33589676 PMCID: PMC7884719 DOI: 10.1038/s41598-021-83348-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 02/01/2021] [Indexed: 12/13/2022] Open
Abstract
Depression is a complex mental health disorder and the goal here was to identify a consistent underlying portrait of expression that ranks all genes from most to least dysregulated and indicates direction of change relative to controls. Using large-scale neural gene expression depression datasets, a combined portrait (for men and women) was created along with one for men and one for women only. The depressed brain was characterized by a "hypo" state, that included downregulation of activity-related genes, including EGR1, FOS, and ARC, and indications of a lower brain temperature and sleep-like state. MAP kinase and BDNF pathways were enriched with overlapping genes. Expression patterns suggested decreased signaling for GABA and for neuropeptides, CRH, SST, and CCK. GWAS depression genes were among depression portrait genes and common genes of interest included SPRY2 and PSEN2. The portraits were used with the drug repurposing approach of signature matching to identify treatments that could reverse depression gene expression patterns. Exercise was identified as the top treatment for depression for the combined and male portraits. Other non-traditional treatments that scored well were: curcumin, creatine, and albiflorin. Fluoxetine scored best among typical antidepressants. The creation of the portraits of depression provides new insights into the complex landscape of depression and a novel platform for evaluating and identifying potential new treatments.
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Skugor A, Kjos NP, Sundaram AYM, Mydland LT, Ånestad R, Tauson AH, Øverland M. Effects of long-term feeding of rapeseed meal on skeletal muscle transcriptome, production efficiency and meat quality traits in Norwegian Landrace growing-finishing pigs. PLoS One 2019; 14:e0220441. [PMID: 31390356 PMCID: PMC6685631 DOI: 10.1371/journal.pone.0220441] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 07/16/2019] [Indexed: 12/30/2022] Open
Abstract
This study was performed to investigate the effects of dietary inclusion of 20% rapeseed meal (RSM) as an alternative to soybean meal (SBM) in a three-month feeding experiment with growing finishing pigs. Dietary alteration affected growth performance, several carcass traits and transcriptional responses in the skeletal muscle, but did not affect measured meat quality traits. In general, pigs fed the RSM test diet exhibited reduced growth performance compared to pigs on SBM control diet. Significant transcriptional changes in the skeletal muscle of growing pigs fed RSM diet were likely the consequence of an increased amount of fiber and higher polyunsaturated fatty acids, and presence of bioactive phytochemicals, such as glucosinolates. RNAseq pipeline using Tophat2-Cuffdiff identified 57 upregulated and 63 downregulated genes in RSM compared to SBM pigs. Significantly enriched among downregulated pathways was p53-mediated signalling involved in cellular proliferation, while activation of negative growth regulators (IER5, KLF10, BTG2, KLF11, RETREG1, PRUNE2) in RSM fed pigs provided further evidence for reduced proliferation and increased cellular death, in accordance with the observed reduction in performance traits. Upregulation of well-known metabolic controllers (PDK4, UCP3, ESRRG and ESRRB), involved in energy homeostasis (glucose and lipid metabolism, and mitochondrial function), suggested less available energy and nutrients in RSM pigs. Furthermore, several genes supported more pronounced proteolysis (ABTB1, OTUD1, PADI2, SPP1) and reduced protein synthesis (THBS1, HSF4, AP1S2) in RSM muscle tissue. In parallel, higher levels of NR4A3, PDK4 and FGF21, and a drop in adropin, ELOVL6 and CIDEC/FSP27 indicated increased lipolysis and fatty acid oxidation, reflective of lower dressing percentage. Finally, pigs exposed to RSM showed greater expression level of genes responsive to oxidative stress, indicated by upregulation of GPX1, GPX2, and TXNIP.
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Affiliation(s)
- Adrijana Skugor
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, Aas, Norway
| | - Nils Petter Kjos
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, Aas, Norway
| | | | - Liv Torunn Mydland
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, Aas, Norway
| | - Ragnhild Ånestad
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, Aas, Norway
| | - Anne-Helene Tauson
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, Aas, Norway
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Margareth Øverland
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, Aas, Norway
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6
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Berdeaux R, Hutchins C. Anabolic and Pro-metabolic Functions of CREB-CRTC in Skeletal Muscle: Advantages and Obstacles for Type 2 Diabetes and Cancer Cachexia. Front Endocrinol (Lausanne) 2019; 10:535. [PMID: 31428057 PMCID: PMC6688074 DOI: 10.3389/fendo.2019.00535] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 07/18/2019] [Indexed: 12/31/2022] Open
Abstract
cAMP is one of the earliest described mediators of hormone action in response to physiologic stress that allows acute stress responses and adaptation in every tissue. The classic role of cAMP signaling in metabolic tissues is to regulate nutrient partitioning. In response to acute stress, such as epinephrine released during strenuous exercise or fasting, intramuscular cAMP liberates glucose from glycogen and fatty acids from triglycerides. In the long-term, activation of Gs-coupled GPCRs stimulates muscle growth (hypertrophy) and metabolic adaptation through multiple pathways that culminate in a net increase of protein synthesis, mitochondrial biogenesis, and improved metabolic efficiency. This review focuses on regulation, function, and transcriptional targets of CREB (cAMP response element binding protein) and CRTCs (CREB regulated transcriptional coactivators) in skeletal muscle and the potential for targeting this pathway to sustain muscle mass and metabolic function in type 2 diabetes and cancer. Although the muscle-autonomous roles of these proteins might render them excellent targets for both conditions, pharmacologic targeting must be approached with caution. Gain of CREB-CRTC function is associated with excess liver glucose output in type 2 diabetes, and growing evidence implicates CREB-CRTC activation in proliferation and invasion of different types of cancer cells. We conclude that deeper investigation to identify skeletal muscle specific regulatory mechanisms that govern CREB-CRTC transcriptional activity is needed to safely take advantage of their potent effects to invigorate skeletal muscle to potentially improve health in people with type 2 diabetes and cancer.
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Affiliation(s)
- Rebecca Berdeaux
- Department of Integrative Biology and Pharmacology, Center for Metabolic and Degenerative Diseases, The Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center Houston, Houston, TX, United States
- Graduate Program in Biochemistry and Cell Biology, The MD Anderson-UTHealth Graduate School of Biomedical Sciences, Houston, TX, United States
- *Correspondence: Rebecca Berdeaux
| | - Chase Hutchins
- Department of Integrative Biology and Pharmacology, Center for Metabolic and Degenerative Diseases, The Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center Houston, Houston, TX, United States
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Chikazawa M, Sato R. Identification of Functional Food Factors as β 2-Adrenergic Receptor Agonists and Their Potential Roles in Skeletal Muscle. J Nutr Sci Vitaminol (Tokyo) 2018; 64:68-74. [PMID: 29491275 DOI: 10.3177/jnsv.64.68] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Maintaining skeletal muscle functions by controlling muscle metabolism is of utmost importance. β2-Adrenergic receptor (β2-AR), which is expressed in skeletal muscle, is a member of the G-protein-coupled receptor family that plays a critical role in the maintenance of muscle mass. In the present study, using luciferase reporter assays in β2-AR-expressing HEK293 cells, we discovered several food factors that exhibited agonistic activity at mouse or human β2-AR. Osthole, gramine, and hordenine were identified as both mouse and human β2-AR agonists, whereas berberine was identified as a mouse β2-AR agonist only. Additionally, intramuscular injection of gramine or hordenine in mice facilitated gene expression of several cAMP response element binding protein targets, which is thought to result in increased skeletal muscle protein synthesis. This study provides evidence that several food factors might exert potential health effects on skeletal muscle by enhancing cAMP signaling through the activation of β2-AR.
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Affiliation(s)
- Miho Chikazawa
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo
| | - Ryuichiro Sato
- Food Biochemistry Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo.,Nutri-Life Science Laboratory, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, University of Tokyo.,AMED-CREST, Japan Agency for Medical Research and Development
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8
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Popov DV, Lysenko EA, Bokov RO, Volodina MA, Kurochkina NS, Makhnovskii PA, Vyssokikh MY, Vinogradova OL. Effect of aerobic training on baseline expression of signaling and respiratory proteins in human skeletal muscle. Physiol Rep 2018; 6:e13868. [PMID: 30198217 PMCID: PMC6129775 DOI: 10.14814/phy2.13868] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 08/24/2018] [Indexed: 12/30/2022] Open
Abstract
Most studies examining the molecular mechanisms underlying adaptation of human skeletal muscles to aerobic exercise focused on the response to acute exercise. Here, we examined the effect of a 2-month aerobic training program on baseline parameters in human muscle. Ten untrained males performed a one-legged knee extension exercise for 1 h with the same relative intensity before and after a 2-month aerobic training program. Biopsy samples were taken from vastus lateralis muscle at rest before and after the 2 month training program (baseline samples). Additionally, biopsy samples were taken from the exercised leg 1 and 4 h after the one-legged continuous knee extension exercise. Aerobic training decreases baseline phosphorylation of FOXO1Ser256 , increases that of CaMKIIThr286 , CREB1Ser133 , increases baseline expression of mitochondrial proteins in respiratory complexes I-V, and some regulators of mitochondrial biogenesis (TFAM, NR4A3, and CRTC2). An increase in the baseline content of these proteins was not associated with a change in baseline expression of their genes. The increase in the baseline content of regulators of mitochondrial biogenesis (TFAM and NR4A3) was associated with a transient increase in transcription after acute exercise. Contrariwise, the increase in the baseline content of respiratory proteins does not seem to be regulated at the transcriptional level; rather, it is associated with other mechanisms. Adaptation of human skeletal muscle to regular aerobic exercise is associated not only with transient molecular responses to exercise, but also with changes in baseline phosphorylation and expression of regulatory proteins.
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Affiliation(s)
- Daniil V. Popov
- Laboratory of Exercise PhysiologyInstitute of Biomedical Problems of the Russian Academy of SciencesMoscowRussia
- Faculty of Fundamental MedicineM.V. Lomonosov Moscow State UniversityMoscowRussia
| | - Evgeny A. Lysenko
- Laboratory of Exercise PhysiologyInstitute of Biomedical Problems of the Russian Academy of SciencesMoscowRussia
- Faculty of Fundamental MedicineM.V. Lomonosov Moscow State UniversityMoscowRussia
| | - Roman O. Bokov
- Laboratory of Exercise PhysiologyInstitute of Biomedical Problems of the Russian Academy of SciencesMoscowRussia
| | - Maria A. Volodina
- Laboratory of Mitochondrial MedicineResearch Center for ObstetricsGynecology and PerinatologyMinistry of Healthcare of the Russian FederationMoscowRussia
| | - Nadia S. Kurochkina
- Laboratory of Exercise PhysiologyInstitute of Biomedical Problems of the Russian Academy of SciencesMoscowRussia
| | - Pavel A. Makhnovskii
- Laboratory of Exercise PhysiologyInstitute of Biomedical Problems of the Russian Academy of SciencesMoscowRussia
| | - Mikhail Y. Vyssokikh
- Laboratory of Mitochondrial MedicineResearch Center for ObstetricsGynecology and PerinatologyMinistry of Healthcare of the Russian FederationMoscowRussia
| | - Olga L. Vinogradova
- Laboratory of Exercise PhysiologyInstitute of Biomedical Problems of the Russian Academy of SciencesMoscowRussia
- Faculty of Fundamental MedicineM.V. Lomonosov Moscow State UniversityMoscowRussia
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Sawczuk M, Maciejewska-Karlowska A, Cieszczyk P, Skotarczak B, Ficek K. Association of the ADRB2 Gly16Arg and Glu27Gln polymorphisms with athlete status. J Sports Sci 2013; 31:1535-44. [PMID: 23631811 DOI: 10.1080/02640414.2013.786184] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The β-adrenergic receptors (β-ARs) have known functional roles in cardiovascular and pulmonary responses as well as the appropriate substrate metabolism required for athletic ability. Thus, the β-AR genes are plausible candidates for the variations observed in strength/power and endurance performance levels. The aims of the present study were to compare the frequency distribution of the ADRB2 Gly16Arg and ADRB2 Glu27Gln polymorphisms among athletes of sports with different metabolic and cardiopulmonary demands (endurance vs. strength/power) and to test the association between the Gly16Arg and Glu27Gln genotypes and athlete status. The study was performed in a group of 223 Polish athletes of the highest nationally competitive standard (123 endurance-oriented athletes and 100 strength/power athletes). Control samples were prepared from 354 unrelated, sedentary volunteers. The χ² test of independence revealed that the frequencies of the Gly16 and Glu27 alleles were significantly higher in the strength/power athletes than in the controls (69.0% vs. 59.7%; df = 1, P = 0.017 and 51% vs. 41.5%; df = 1 P = 0.017, respectively). The study showed that ADRB2 Gly16Arg and Glu27Gln markers are associated with athlete status in Polish athletes. An excess of Gly16 and Glu27 alleles and the Gly16:Glu27 haplotype observed in the strength/power athlete subgroup suggests that the Gly16 and Glu27 alleles might increase the probability of becoming a strength/power athlete rather than an endurance-oriented athlete.
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Affiliation(s)
- Marek Sawczuk
- a University of Szczecin , Faculty of Physical Education and Health Promotion , Szczecin , Poland
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Pronounced effects of acute endurance exercise on gene expression in resting and exercising human skeletal muscle. PLoS One 2012; 7:e51066. [PMID: 23226462 PMCID: PMC3511348 DOI: 10.1371/journal.pone.0051066] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Accepted: 10/29/2012] [Indexed: 12/21/2022] Open
Abstract
Regular physical activity positively influences whole body energy metabolism and substrate handling in exercising muscle. While it is recognized that the effects of exercise extend beyond exercising muscle, it is unclear to what extent exercise impacts non-exercising muscles. Here we investigated the effects of an acute endurance exercise bouts on gene expression in exercising and non-exercising human muscle. To that end, 12 male subjects aged 44–56 performed one hour of one-legged cycling at 50% Wmax. Muscle biopsies were taken from the exercising and non-exercising leg before and immediately after exercise and analyzed by microarray. One-legged cycling raised plasma lactate, free fatty acids, cortisol, noradrenalin, and adrenalin levels. Surprisingly, acute endurance exercise not only caused pronounced gene expression changes in exercising muscle but also in non-exercising muscle. In the exercising leg the three most highly induced genes were all part of the NR4A family. Remarkably, many genes induced in non-exercising muscle were PPAR targets or related to PPAR signalling, including PDK4, ANGPTL4 and SLC22A5. Pathway analysis confirmed this finding. In conclusion, our data indicate that acute endurance exercise elicits pronounced changes in gene expression in non-exercising muscle, which are likely mediated by changes in circulating factors such as free fatty acids. The study points to a major influence of exercise beyond the contracting muscle.
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Sato S, Shirato K, Kizaki T, Ohno H, Tachiyashiki K, Imaizumi K. Effects of β2-agonists and exercise on β2-adrenergic receptor signaling in skeletal muscles. JOURNAL OF PHYSICAL FITNESS AND SPORTS MEDICINE 2012. [DOI: 10.7600/jpfsm.1.139] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Muscle plasticity and β₂-adrenergic receptors: adaptive responses of β₂-adrenergic receptor expression to muscle hypertrophy and atrophy. J Biomed Biotechnol 2011; 2011:729598. [PMID: 22190857 PMCID: PMC3228688 DOI: 10.1155/2011/729598] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 08/23/2011] [Indexed: 02/04/2023] Open
Abstract
We discuss the functional roles of β2-adrenergic receptors in skeletal
muscle hypertrophy and atrophy as well as
the adaptive responses of β2-adrenergic receptor expression to anabolic and catabolic conditions. β2-Adrenergic receptor stimulation using
anabolic drugs increases muscle mass by promoting
muscle protein synthesis and/or attenuating
protein degradation. These effects are prevented
by the downregulation of the receptor. Endurance
training improves oxidative performance partly
by increasing β2-adrenergic receptor density in
exercise-recruited slow-twitch muscles. However,
excessive stimulation of β2-adrenergic receptors negates their beneficial effects. Although the preventive effects of β2-adrenergic receptor stimulation on
atrophy induced by muscle disuse and catabolic
hormones or drugs are observed, these catabolic
conditions decrease β2-adrenergic receptor expression in
slow-twitch muscles. These findings present
evidence against the use of β2-adrenergic agonists in therapy for muscle wasting and weakness. Thus, β2-adrenergic receptors in the skeletal
muscles play an important physiological role in
the regulation of protein and energy balance.
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