101
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Zhao J, Huang Y, Yu X. A Narrative Review of Gut-Muscle Axis and Sarcopenia: The Potential Role of Gut Microbiota. Int J Gen Med 2021; 14:1263-1273. [PMID: 33880058 PMCID: PMC8053521 DOI: 10.2147/ijgm.s301141] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/23/2021] [Indexed: 12/13/2022] Open
Abstract
Sarcopenia is a multifactorial disease related to aging, chronic inflammation, insufficient nutrition, and physical inactivity. Previous studies have suggested that there is a relationship between sarcopenia and gut microbiota,namely, the gut-muscle axis. The present review highlights that the gut microbiota can affect muscle mass and muscle function from inflammation and immunity,substance and energy metabolism, endocrine and insulin sensitivity, etc., directly or indirectly establishing a connection with sarcopenia, thereby realizing the “gut-muscle axis”.
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Affiliation(s)
- Jiaxi Zhao
- Huadong Hospital Affiliated to Fudan University, Shanghai, People's Republic of China
| | - Yiqin Huang
- Huadong Hospital Affiliated to Fudan University, Shanghai, People's Republic of China
| | - Xiaofeng Yu
- Huadong Hospital Affiliated to Fudan University, Shanghai, People's Republic of China
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102
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Mach N, Moroldo M, Rau A, Lecardonnel J, Le Moyec L, Robert C, Barrey E. Understanding the Holobiont: Crosstalk Between Gut Microbiota and Mitochondria During Long Exercise in Horse. Front Mol Biosci 2021; 8:656204. [PMID: 33898524 PMCID: PMC8063112 DOI: 10.3389/fmolb.2021.656204] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 02/16/2021] [Indexed: 12/17/2022] Open
Abstract
Endurance exercise has a dramatic impact on the functionality of mitochondria and on the composition of the intestinal microbiome, but the mechanisms regulating the crosstalk between these two components are still largely unknown. Here, we sampled 20 elite horses before and after an endurance race and used blood transcriptome, blood metabolome and fecal microbiome to describe the gut-mitochondria crosstalk. A subset of mitochondria-related differentially expressed genes involved in pathways such as energy metabolism, oxidative stress and inflammation was discovered and then shown to be associated with butyrate-producing bacteria of the Lachnospiraceae family, especially Eubacterium. The mechanisms involved were not fully understood, but through the action of their metabolites likely acted on PPARγ, the FRX-CREB axis and their downstream targets to delay the onset of hypoglycemia, inflammation and extend running time. Our results also suggested that circulating free fatty acids may act not merely as fuel but drive mitochondrial inflammatory responses triggered by the translocation of gut bacterial polysaccharides following endurance. Targeting the gut-mitochondria axis therefore appears to be a potential strategy to enhance athletic performance.
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Affiliation(s)
- Núria Mach
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France
| | - Marco Moroldo
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France
| | - Andrea Rau
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France.,BioEcoAgro Joint Research Unit, INRAE, Université de Liège, Université de Lille, Université de Picardie Jules Verne, Estrées-Mons, France
| | - Jérôme Lecardonnel
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France
| | - Laurence Le Moyec
- Université d'Évry Val d'Essonne, Université Paris-Saclay, Évry, France ABI UMR 1313, INRAE, Université Paris-Saclay, AgroParisTech, Jouy-en-Josas, France.,MCAM UMR7245, CNRS, Muséum National d'Histoire Naturelle, Paris, France
| | - Céline Robert
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France.,École Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
| | - Eric Barrey
- Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350, Jouy-en-Josas, France
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103
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Barton W, Cronin O, Garcia‐Perez I, Whiston R, Holmes E, Woods T, Molloy CB, Molloy MG, Shanahan F, Cotter PD, O’Sullivan O. The effects of sustained fitness improvement on the gut microbiome: A longitudinal, repeated measures case-study approach. TRANSLATIONAL SPORTS MEDICINE 2021; 4:174-192. [PMID: 34355132 PMCID: PMC8317196 DOI: 10.1002/tsm2.215] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/23/2020] [Accepted: 11/11/2020] [Indexed: 01/01/2023]
Abstract
The athlete gut microbiome differs from that of non-athletes in its composition and metabolic function. Short-term fitness improvement in sedentary adults does not replicate the microbiome characteristics of athletes. The objective of this study was to investigate whether sustained fitness improvement leads to pronounced alterations in the gut microbiome. This was achieved using a repeated-measures, case-study approach that examined the gut microbiome of two initially unfit volunteers undertaking progressive exercise training over a 6-month period. Samples were collected every two weeks, and microbiome, metabolome, diet, body composition, and cardiorespiratory fitness data were recorded. Training culminated in both participants completing their respective goals (a marathon or Olympic-distance triathlon) with improved body composition and fitness parameters. Increases in gut microbiota α-diversity occurred with sustained training and fluctuations occurred in response to training events (eg, injury, illness, and training peaks). Participants' BMI reduced during the study and was significantly associated with increased urinary measurements of N-methyl nicotinate and hippurate, and decreased phenylacetylglutamine. These results suggest that sustained fitness improvements support alterations to gut microbiota and physiologically-relevant metabolites. This study provides longitudinal analysis of the gut microbiome response to real-world events during progressive fitness training, including intercurrent illness and injury.
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Affiliation(s)
- Wiley Barton
- APC Microbiome IrelandNational University of IrelandCorkIreland
- Animal and Grassland Research and Innovation Centre, Teagasc, MooreparkFermoyIreland
- Department of Food BiosciencesTeagasc Food Research Centre, MooreparkFermoyIreland
| | - Owen Cronin
- APC Microbiome IrelandNational University of IrelandCorkIreland
- Department of MedicineNational University of IrelandCorkIreland
| | - Isabel Garcia‐Perez
- Division of Integrated Systems Medicine and Digestive DiseasesDepartment of Surgery and CancerFaculty of MedicineImperial College LondonLondonUK
| | - Ronan Whiston
- APC Microbiome IrelandNational University of IrelandCorkIreland
- Department of Food BiosciencesTeagasc Food Research Centre, MooreparkFermoyIreland
| | - Elaine Holmes
- Division of Integrated Systems Medicine and Digestive DiseasesDepartment of Surgery and CancerFaculty of MedicineImperial College LondonLondonUK
| | - Trevor Woods
- Human Performance LaboratoryDepartment of Sport and Physical ActivityNational University of IrelandCorkIreland
| | | | - Michael G. Molloy
- APC Microbiome IrelandNational University of IrelandCorkIreland
- Department of MedicineNational University of IrelandCorkIreland
| | - Fergus Shanahan
- APC Microbiome IrelandNational University of IrelandCorkIreland
- Department of MedicineNational University of IrelandCorkIreland
| | - Paul D. Cotter
- APC Microbiome IrelandNational University of IrelandCorkIreland
- Department of Food BiosciencesTeagasc Food Research Centre, MooreparkFermoyIreland
| | - Orla O’Sullivan
- APC Microbiome IrelandNational University of IrelandCorkIreland
- Department of Food BiosciencesTeagasc Food Research Centre, MooreparkFermoyIreland
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104
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McNamara MP, Singleton JM, Cadney MD, Ruegger PM, Borneman J, Garland T. Early-life effects of juvenile Western diet and exercise on adult gut microbiome composition in mice. J Exp Biol 2021; 224:jeb239699. [PMID: 33431595 PMCID: PMC7929929 DOI: 10.1242/jeb.239699] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/06/2021] [Indexed: 02/06/2023]
Abstract
Alterations to the gut microbiome caused by changes in diet, consumption of antibiotics, etc., can affect host function. Moreover, perturbation of the microbiome during critical developmental periods potentially has long-lasting impacts on hosts. Using four selectively bred high runner and four non-selected control lines of mice, we examined the effects of early-life diet and exercise manipulations on the adult microbiome by sequencing the hypervariable internal transcribed spacer region of the bacterial gut community. Mice from high runner lines run ∼3-fold more on wheels than do controls, and have several other phenotypic differences (e.g. higher food consumption and body temperature) that could alter the microbiome, either acutely or in terms of coevolution. Males from generation 76 were given wheels and/or a Western diet from weaning until sexual maturity at 6 weeks of age, then housed individually without wheels on standard diet until 14 weeks of age, when fecal samples were taken. Juvenile Western diet reduced bacterial richness and diversity after the 8-week washout period (equivalent to ∼6 human years). We also found interactive effects of genetic line type, juvenile diet and/or juvenile exercise on microbiome composition and diversity. Microbial community structure clustered significantly in relation to both line type and diet. Western diet also reduced the relative abundance of Muribaculum intestinale These results constitute one of the first reports of juvenile diet having long-lasting effects on the adult microbiome after a substantial washout period. Moreover, we found interactive effects of diet with early-life exercise exposure, and a dependence of these effects on genetic background.
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Affiliation(s)
- Monica P McNamara
- Department of Evolution, Ecology, and Organismal Biology, University of California, Riverside, Riverside, CA 91521, USA
| | - Jennifer M Singleton
- Department of Evolution, Ecology, and Organismal Biology, University of California, Riverside, Riverside, CA 91521, USA
| | - Marcell D Cadney
- Department of Evolution, Ecology, and Organismal Biology, University of California, Riverside, Riverside, CA 91521, USA
| | - Paul M Ruegger
- Department of Microbiology and Plant Pathology, University of California, Riverside, Riverside, CA 91521, USA
| | - James Borneman
- Department of Microbiology and Plant Pathology, University of California, Riverside, Riverside, CA 91521, USA
| | - Theodore Garland
- Department of Evolution, Ecology, and Organismal Biology, University of California, Riverside, Riverside, CA 91521, USA
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105
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Gizard F, Fernandez A, De Vadder F. Interactions between gut microbiota and skeletal muscle. Nutr Metab Insights 2021; 13:1178638820980490. [PMID: 33402830 PMCID: PMC7745561 DOI: 10.1177/1178638820980490] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/23/2020] [Indexed: 12/11/2022] Open
Abstract
The gut microbiota is now recognized as a major contributor to the host’s nutrition, metabolism, immunity, and neurological functions. Imbalanced microbiota (ie, dysbiosis) is linked to undernutrition-induced stunting, inflammatory and metabolic diseases, and cancers. Skeletal muscle also takes part in the interorgan crosstalk regulating substrate metabolism, immunity, and health. Here, we review the reciprocal influence of gut microbiota and skeletal muscle in relation to juvenile growth, performance, aging, and chronic diseases. Several routes involving the vascular system and organs such as the liver and adipose tissue connect the gut microbiota and skeletal muscle, with effects on fitness and health. Therapeutic perspectives arise from the health benefits observed with changes in gut microbiota and muscle activity, further encouraging multimodal therapeutic strategies.
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Affiliation(s)
- Florence Gizard
- Mammalian Cell Biology Group, Institute of Human Genetics UMR9002, CNRS-University of Montpellier, Montpellier, France
| | - Anne Fernandez
- Mammalian Cell Biology Group, Institute of Human Genetics UMR9002, CNRS-University of Montpellier, Montpellier, France
| | - Filipe De Vadder
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, École Normale Supérieure de Lyon, Centre National de la Recherche Scientifique, Université Claude Bernard Lyon 1, UMR5242, Lyon, France
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106
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Mancin L, Rollo I, Mota JF, Piccini F, Carletti M, Susto GA, Valle G, Paoli A. Optimizing Microbiota Profiles for Athletes. Exerc Sport Sci Rev 2021; 49:42-49. [PMID: 33044333 DOI: 10.1249/jes.0000000000000236] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Gut microbiome influences athletes' physiology, but because of the complexity of sport performance and the great intervariability of microbiome features, it is not reasonable to define a single healthy microbiota profile for athletes. We suggest the use of specific meta-omics analysis coupled with innovative computational systems to uncover the hidden association between microbes and athlete's physiology and predict personalized recommendation.
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Affiliation(s)
| | | | - Joao Felipe Mota
- Clinical and Sports Nutrition Research Laboratory (LABINCE), Federal University of Goiás, Goiânia, Goiás, Brazil
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107
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Nay K, Martin D, Orfila L, Saligaut D, Martin B, Horeau M, Cavey T, Kenawi M, Island ML, Ropert M, Loréal O, Koechlin-Ramonatxo C, Derbré F. Intermittent reloading does not prevent reduction in iron availability and hepcidin upregulation caused by hindlimb unloading. Exp Physiol 2021; 106:28-36. [PMID: 32281155 DOI: 10.1113/ep088339] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 04/09/2020] [Indexed: 01/06/2023]
Abstract
NEW FINDINGS What is the central question of this study? Could skeletal muscle be involved in microgravity-induced iron misdistribution by modulating expression of hepcidin, the master regulator of iron metabolism? What is the main finding and its importance? We demonstrate, in rats, that hepcidin upregulation is not a transient adaptation associated with early exposure to microgravity and that intermittent reloading does not limit microgravity-induced iron misdistribution despite having a beneficial effect on soleus muscle wasting. ABSTRACT In humans, exposure to microgravity during spaceflight causes muscle atrophy, changes in iron storage and a reduction in iron availability. We previously observed that during 7 days of simulated microgravity in rats, hepcidin plays a key role in iron misdistribution, and we suggested that a crosstalk between skeletal muscle and liver could regulate hepcidin synthesis in this context. In the present study in rats, we investigated the medium-term effects of simulated microgravity on iron metabolism. We also tested whether intermittent reloading (IR) to target skeletal muscle atrophy limits iron misdistribution efficiently. For this purpose, Wistar rats underwent 14 days of hindlimb unloading (HU) combined or not combined with daily IR. At the end of this period, the serum iron concentration and transferrin saturation were significantly reduced, whereas hepatic hepcidin mRNA was upregulated. However, the main signalling pathways involved in hepcidin synthesis in the liver (BMP-small mothers against decapentaplegic (SMAD), interleukin-6-STAT3 and ERK1/2) were unaffected. Unlike what was observed after 7 days of HU, the iron concentration in the spleen, liver and skeletal muscle was comparable between control animals and those that underwent HU or HU plus IR for 14 days. Despite its beneficial effect on soleus muscle atrophy and slow-to-fast myosin heavy chain distribution, IR did not significantly prevent a reduction in iron availability and hepcidin upregulation. Altogether, these results highlight that iron availability is durably reduced during longer exposure to simulated microgravity and that the related hepcidin upregulation is not a transient adaptation to these conditions. The results also suggest that skeletal muscle does not necessarily play a key role in the iron misdistribution that occurs during simulated microgravity.
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Affiliation(s)
- Kévin Nay
- Laboratory 'Movement Sport and Health Sciences' EA7470, University of Rennes/ENS Rennes, France
- DMEM, Univ Montpellier, INRAE, Montpellier, France
| | - David Martin
- Laboratory 'Movement Sport and Health Sciences' EA7470, University of Rennes/ENS Rennes, France
| | - Luz Orfila
- Laboratory 'Movement Sport and Health Sciences' EA7470, University of Rennes/ENS Rennes, France
| | - Dany Saligaut
- Laboratory 'Movement Sport and Health Sciences' EA7470, University of Rennes/ENS Rennes, France
| | - Brice Martin
- Laboratory 'Movement Sport and Health Sciences' EA7470, University of Rennes/ENS Rennes, France
| | - Mathieu Horeau
- Laboratory 'Movement Sport and Health Sciences' EA7470, University of Rennes/ENS Rennes, France
| | - Thibaut Cavey
- INSERM 1241, University of Rennes, Nutrition Metabolisms and Cancer (NuMeCan), Rennes, France
- Department of Biochemistry, CHU, Rennes, France
| | - Moussa Kenawi
- INSERM 1241, University of Rennes, Nutrition Metabolisms and Cancer (NuMeCan), Rennes, France
| | - Marie-Laure Island
- INSERM 1241, University of Rennes, Nutrition Metabolisms and Cancer (NuMeCan), Rennes, France
- Department of Biochemistry, CHU, Rennes, France
| | - Martine Ropert
- INSERM 1241, University of Rennes, Nutrition Metabolisms and Cancer (NuMeCan), Rennes, France
- Department of Biochemistry, CHU, Rennes, France
| | - Olivier Loréal
- INSERM 1241, University of Rennes, Nutrition Metabolisms and Cancer (NuMeCan), Rennes, France
| | | | - Frédéric Derbré
- Laboratory 'Movement Sport and Health Sciences' EA7470, University of Rennes/ENS Rennes, France
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108
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Abstract
Aging is characterized by the functional decline of tissues and organs and increased risk of aging-associated disorders, which pose major societal challenges and are a public health priority. Despite extensive human genetics studies, limited progress has been made linking genetics with aging. There is a growing realization that the altered assembly, structure and dynamics of the gut microbiota actively participate in the aging process. Age-related microbial dysbiosis is involved in reshaping immune responses during aging, which manifest as immunosenescence (insufficiency) and inflammaging (over-reaction) that accompany many age-associated enteric and extraenteric diseases. The gut microbiota can be regulated, suggesting a potential target for aging interventions. This review summarizes recent findings on the physiological succession of gut microbiota across the life-cycle, the roles and mechanisms of gut microbiota in healthy aging, alterations of gut microbiota and aging-associated diseases, and the gut microbiota-targeted anti-aging strategies.
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Affiliation(s)
- Zongxin Ling
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xia Liu
- Department of Intensive Care Unit, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yiwen Cheng
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xiumei Yan
- Department of Geriatrics, Lishui Second People's Hospital, Lishui, Zhejiang, China
| | - Shaochang Wu
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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109
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Dao T, Green AE, Kim YA, Bae SJ, Ha KT, Gariani K, Lee MR, Menzies KJ, Ryu D. Sarcopenia and Muscle Aging: A Brief Overview. Endocrinol Metab (Seoul) 2020; 35:716-732. [PMID: 33397034 PMCID: PMC7803599 DOI: 10.3803/enm.2020.405] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 11/30/2020] [Indexed: 12/11/2022] Open
Abstract
The world is facing the new challenges of an aging population, and understanding the process of aging has therefore become one of the most important global concerns. Sarcopenia is a condition which is defined by the gradual loss of skeletal muscle mass and function with age. In research and clinical practice, sarcopenia is recognized as a component of geriatric disease and is a current target for drug development. In this review we define this condition and provide an overview of current therapeutic approaches. We further highlight recent findings that describe key pathophysiological phenotypes of this condition, including alterations in muscle fiber types, mitochondrial function, nicotinamide adenine dinucleotide (NAD+) metabolism, myokines, and gut microbiota, in aged muscle compared to young muscle or healthy aged muscle. The last part of this review examines new therapeutic avenues for promising treatment targets. There is still no accepted therapy for sarcopenia in humans. Here we provide a brief review of the current state of research derived from various mouse models or human samples that provide novel routes for the development of effective therapeutics to maintain muscle health during aging.
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Affiliation(s)
- Tam Dao
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon,
Korea
| | - Alexander E. Green
- University of Ottawa Eric Poulin Centre for Neuromuscular Disease, Ottawa, ON,
Canada
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences University of Ottawa, Ottawa, ON,
Canada
| | - Yun A Kim
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon,
Korea
| | - Sung-Jin Bae
- Korean Medical Research Center for Healthy Aging, Pusan National University, Yangsan,
Korea
| | - Ki-Tae Ha
- Korean Medical Research Center for Healthy Aging, Pusan National University, Yangsan,
Korea
- Department of Korean Medical Science, Pusan National University School of Korean Medicine, Yangsan,
Korea
| | - Karim Gariani
- Service of Endocrinology, Diabetes, Nutrition and Therapeutic Patient Education, Geneva University Hospitals, Geneva,
Switzerland
- Faculty of Medicine, University of Geneva, Geneva,
Switzerland
| | - Mi-ra Lee
- Department of Social Welfare, Division of Public Service, Dong-Eui University, Busan,
Korea
- Mi-ra Lee, Department of Public Service, Dong-Eui University, 176 Eomgwang-ro, Busanjin-gu, Busan 47340, Korea, Tel: +82-51-890-2038, E-mail:
| | - Keir J. Menzies
- University of Ottawa Eric Poulin Centre for Neuromuscular Disease, Ottawa, ON,
Canada
- Interdisciplinary School of Health Sciences, Faculty of Health Sciences University of Ottawa, Ottawa, ON,
Canada
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON,
Canada
- Keir J. Menzies, Eric Poulin Centre for Neuromuscular Disease, Interdisciplinary School of Health Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada, Tel: +1-613-562-5800, E-mail:
| | - Dongryeol Ryu
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon,
Korea
- Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon,
Korea
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul,
Korea
- Corresponding authors: Dongryeol Ryu, Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Korea, Tel: +82-31-299-6138, E-mail:
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110
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The Gut-Muscle Axis in Older Subjects with Low Muscle Mass and Performance: A Proof of Concept Study Exploring Fecal Microbiota Composition and Function with Shotgun Metagenomics Sequencing. Int J Mol Sci 2020; 21:ijms21238946. [PMID: 33255677 PMCID: PMC7728056 DOI: 10.3390/ijms21238946] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/16/2020] [Accepted: 11/24/2020] [Indexed: 02/07/2023] Open
Abstract
The gut microbiota could influence the pathophysiology of age-related sarcopenia through multiple mechanisms implying modulation of chronic inflammation and anabolic resistance. The aim of this study was to compare the fecal microbiota composition and functionality, assessed by shotgun metagenomics sequencing, between two groups of elderly outpatients, differing only for the presence of primary sarcopenia. Five sarcopenic elderly subjects and twelve non-sarcopenic controls, classified according to lower limb function and bioimpedance-derived skeletal muscle index, provided a stool sample, which was analyzed with shotgun metagenomics approaches, to determine the overall microbiota composition, the representation of bacteria at the species level, and the prediction of bacterial genes involved in functional metabolic pathways. Sarcopenic subjects displayed different fecal microbiota compositions at the species level, with significant depletion of two species known for their metabolic capacity of producing short-chain fatty acids (SCFAs), Faecalibacterium prausnitzii and Roseburia inulinivorans, and of Alistipes shahii. Additionally, their fecal metagenome had different representation of genes belonging to 108 metabolic pathways, namely, depletion of genes involved in SCFA synthesis, carotenoid and isoflavone biotransformation, and amino acid interconversion. These results support the hypothesis of an association between microbiota and sarcopenia, indicating novel possible mediators, whose clinical relevance should be investigated in future studies.
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111
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Manickam R, Duszka K, Wahli W. PPARs and Microbiota in Skeletal Muscle Health and Wasting. Int J Mol Sci 2020; 21:ijms21218056. [PMID: 33137899 PMCID: PMC7662636 DOI: 10.3390/ijms21218056] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 10/24/2020] [Accepted: 10/26/2020] [Indexed: 02/06/2023] Open
Abstract
Skeletal muscle is a major metabolic organ that uses mostly glucose and lipids for energy production and has the capacity to remodel itself in response to exercise and fasting. Skeletal muscle wasting occurs in many diseases and during aging. Muscle wasting is often accompanied by chronic low-grade inflammation associated to inter- and intra-muscular fat deposition. During aging, muscle wasting is advanced due to increased movement disorders, as a result of restricted physical exercise, frailty, and the pain associated with arthritis. Muscle atrophy is characterized by increased protein degradation, where the ubiquitin-proteasomal and autophagy-lysosomal pathways, atrogenes, and growth factor signaling all play an important role. Peroxisome proliferator-activated receptors (PPARs) are members of the nuclear receptor family of transcription factors, which are activated by fatty acids and their derivatives. PPARs regulate genes that are involved in development, metabolism, inflammation, and many cellular processes in different organs. PPARs are also expressed in muscle and exert pleiotropic specialized responses upon activation by their ligands. There are three PPAR isotypes, viz., PPARα, -β/δ, and -γ. The expression of PPARα is high in tissues with effective fatty acid catabolism, including skeletal muscle. PPARβ/δ is expressed more ubiquitously and is the predominant isotype in skeletal muscle. It is involved in energy metabolism, mitochondrial biogenesis, and fiber-type switching. The expression of PPARγ is high in adipocytes, but it is also implicated in lipid deposition in muscle and other organs. Collectively, all three PPAR isotypes have a major impact on muscle homeostasis either directly or indirectly. Furthermore, reciprocal interactions have been found between PPARs and the gut microbiota along the gut–muscle axis in both health and disease. Herein, we review functions of PPARs in skeletal muscle and their interaction with the gut microbiota in the context of muscle wasting.
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Affiliation(s)
- Ravikumar Manickam
- Department of Pharmaceutical Sciences, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA;
| | - Kalina Duszka
- Department of Nutritional Sciences, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria;
| | - Walter Wahli
- Center for Integrative Genomics, University of Lausanne, Le Génopode, CH-1015 Lausanne, Switzerland
- Toxalim, INRAE, Chemin de Tournefeuille 180, F-31027 Toulouse, France
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, 11 Mandalay Road, Singapore 308232, Singapore
- Correspondence:
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112
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Marttinen M, Ala-Jaakkola R, Laitila A, Lehtinen MJ. Gut Microbiota, Probiotics and Physical Performance in Athletes and Physically Active Individuals. Nutrients 2020; 12:nu12102936. [PMID: 32992765 PMCID: PMC7599951 DOI: 10.3390/nu12102936] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 09/22/2020] [Accepted: 09/24/2020] [Indexed: 02/06/2023] Open
Abstract
Among athletes, nutrition plays a key role, supporting training, performance, and post-exercise recovery. Research has primarily focused on the effects of diet in support of an athletic physique; however, the role played by intestinal microbiota has been much neglected. Emerging evidence has shown an association between the intestinal microbiota composition and physical activity, suggesting that modifications in the gut microbiota composition may contribute to physical performance of the host. Probiotics represent a potential means for beneficially influencing the gut microbiota composition/function but can also impact the overall health of the host. In this review, we provide an overview of the existing studies that have examined the reciprocal interactions between physical activity and gut microbiota. We further evaluate the clinical evidence that supports the effects of probiotics on physical performance, post-exercise recovery, and cognitive outcomes among athletes. In addition, we discuss the mechanisms of action through which probiotics affect exercise outcomes. In summary, beneficial microbes, including probiotics, may promote health in athletes and enhance physical performance and exercise capacity. Furthermore, high-quality clinical studies, with adequate power, remain necessary to uncover the roles that are played by gut microbiota populations and probiotics in physical performance and the modes of action behind their potential benefits.
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113
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Frampton J, Murphy KG, Frost G, Chambers ES. Short-chain fatty acids as potential regulators of skeletal muscle metabolism and function. Nat Metab 2020; 2:840-848. [PMID: 32694821 DOI: 10.1038/s42255-020-0188-7] [Citation(s) in RCA: 199] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 02/25/2020] [Indexed: 12/25/2022]
Abstract
A key metabolic activity of the gut microbiota is the fermentation of non-digestible carbohydrate, which generates short-chain fatty acids (SCFAs) as the principal end products. SCFAs are absorbed from the gut lumen and modulate host metabolic responses at different organ sites. Evidence suggests that these organ sites include skeletal muscle, the largest organ in humans, which plays a pivotal role in whole-body energy metabolism. In this Review, we evaluate the evidence indicating that SCFAs mediate metabolic cross-talk between the gut microbiota and skeletal muscle. We discuss the effects of three primary SCFAs (acetate, propionate and butyrate) on lipid, carbohydrate and protein metabolism in skeletal muscle, and we consider the potential mechanisms involved. Furthermore, we highlight the emerging roles of these gut-derived metabolites in skeletal muscle function and exercise capacity, present limitations in current knowledge and provide suggestions for future work.
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Affiliation(s)
- James Frampton
- Section for Nutrition Research, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
- Endocrinology and Investigative Medicine, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
| | - Kevin G Murphy
- Endocrinology and Investigative Medicine, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
| | - Gary Frost
- Section for Nutrition Research, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK
| | - Edward S Chambers
- Section for Nutrition Research, Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, London, UK.
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114
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Behera J, Ison J, Tyagi SC, Tyagi N. The role of gut microbiota in bone homeostasis. Bone 2020; 135:115317. [PMID: 32169602 PMCID: PMC8457311 DOI: 10.1016/j.bone.2020.115317] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/27/2020] [Accepted: 03/10/2020] [Indexed: 02/08/2023]
Abstract
The gut microbiota (GM) is referred to as the second gene pool of the human body and a commensal, symbiotic, and pathogenic microorganism living in our intestines. The knowledge of the complex interaction between intestinal microbiota and health outcomes is a novel and rapidly expanding the field. Earlier studies have reported that the microbial communities affect the cellular responses and shape many aspects of physiology and pathophysiology within the body, including muscle and bone metabolism (formation and resorption). GM influences the skeletal homeostasis via affecting the host metabolism, immune function, hormone secretion, and the gut-brain axis. The premise of this review is to discuss the role of GM on bone homeostasis and skeletal muscle mass function. This review also opens up new perspectives for pathophysiological studies by establishing the presence of a 'microbiota-skeletal' axis and raising the possibility of innovative new treatments for skeletal development.
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Affiliation(s)
- Jyotirmaya Behera
- Bone Biology Laboratory, Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Jessica Ison
- Bone Biology Laboratory, Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Suresh C Tyagi
- Bone Biology Laboratory, Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA
| | - Neetu Tyagi
- Bone Biology Laboratory, Department of Physiology, School of Medicine, University of Louisville, Louisville, KY 40202, USA.
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115
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Przewłócka K, Folwarski M, Kaźmierczak-Siedlecka K, Skonieczna-Żydecka K, Kaczor JJ. Gut-Muscle AxisExists and May Affect Skeletal Muscle Adaptation to Training. Nutrients 2020; 12:nu12051451. [PMID: 32443396 PMCID: PMC7285193 DOI: 10.3390/nu12051451] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/09/2020] [Accepted: 05/12/2020] [Indexed: 12/14/2022] Open
Abstract
Excessive training may limit physiological muscle adaptation through chronic oxidative stress and inflammation. Improper diet and overtraining may also disrupt intestinal homeostasis and in consequence enhance inflammation. Altogether, these factors may lead to an imbalance in the gut ecosystem, causing dysregulation of the immune system. Therefore, it seems to be important to optimize the intestinal microbiota composition, which is able to modulate the immune system and reduce oxidative stress. Moreover, the optimal intestinal microbiota composition may have an impact on muscle protein synthesis and mitochondrial biogenesis and function, as well as muscle glycogen storage. Aproperly balanced microbiome may also reduce inflammatory markers and reactive oxygen species production, which may further attenuate macromolecules damage. Consequently, supplementation with probiotics may have some beneficial effect on aerobic and anaerobic performance. The phenomenon of gut-muscle axis should be continuously explored to function maintenance, not only in athletes.
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Affiliation(s)
- Katarzyna Przewłócka
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdańsk, 80-210 Gdańsk, Poland;
| | - Marcin Folwarski
- Departmentof Clinical Nutrition and Dietetics, Medical University of Gdansk, 80-210 Gdańsk, Poland;
| | | | | | - Jan Jacek Kaczor
- Department of Bioenergetics and Physiology of Exercise, Medical University of Gdańsk, 80-210 Gdańsk, Poland;
- Correspondence: ; Tel.: +48-516-191-109
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116
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Kostic AD. Reply to "Is physical performance (in mice) increased by Veillonella atypica or decreased by Lactobacillus bulgaricus?". JOURNAL OF SPORT AND HEALTH SCIENCE 2020; 9:201-202. [PMID: 32444144 PMCID: PMC7242212 DOI: 10.1016/j.jshs.2020.03.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 06/11/2023]
Affiliation(s)
- Aleksandar D Kostic
- Section on Pathophysiology and Molecular Pharmacology, Joslin Diabetes Center, Boston, MA 02215, USA; Department of Microbiology, Harvard Medical School, Boston, MA 02215, USA.
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117
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Housing temperature influences exercise training adaptations in mice. Nat Commun 2020; 11:1560. [PMID: 32214091 PMCID: PMC7096511 DOI: 10.1038/s41467-020-15311-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 02/27/2020] [Indexed: 01/14/2023] Open
Abstract
Exercise training is a powerful means to combat metabolic diseases. Mice are extensively used to investigate the benefits of exercise, but mild cold stress induced by ambient housing temperatures may confound translation to humans. Thermoneutral housing is a strategy to make mice more metabolically similar to humans but its effects on exercise adaptations are unknown. Here we show that thermoneutral housing blunts exercise-induced improvements in insulin action in muscle and adipose tissue and reduces the effects of training on energy expenditure, body composition, and muscle and adipose tissue protein expressions. Thus, many reported effects of exercise training in mice are likely secondary to metabolic stress of ambient housing temperature, making it challenging to translate to humans. We conclude that adaptations to exercise training in mice critically depend upon housing temperature. Our findings underscore housing temperature as a critical parameter in the design and interpretation of murine exercise training studies. Exercise has been shown to be an effective approach to ameliorate metabolic disease in mice housed at ambient temperatures, a condition of mild cold stress to mice. Here the authors show that molecular and metabolic adaptations to exercise are blunted when mice are housed in thermoneutral conditions.
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Ho KM, Kalgudi S, Corbett JM, Litton E. Gut microbiota in surgical and critically ill patients. Anaesth Intensive Care 2020; 48:179-195. [PMID: 32131606 DOI: 10.1177/0310057x20903732] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Microbiota-defined as a collection of microbial organisms colonising different parts of the human body-is now recognised as a pivotal element of human health, and explains a large part of the variance in the phenotypic expression of many diseases. A reduction in microbiota diversity, and replacement of normal microbes with non-commensal, pathogenic or more virulent microbes in the gastrointestinal tract-also known as gut dysbiosis-is now considered to play a causal role in the pathogenesis of many acute and chronic diseases. Results from animal and human studies suggest that dysbiosis is linked to cardiovascular and metabolic disease through changes to microbiota-derived metabolites, including trimethylamine-N-oxide and short-chain fatty acids. Dysbiosis can occur within hours of surgery or the onset of critical illness, even without the administration of antibiotics. These pathological changes in microbiota may contribute to important clinical outcomes, including surgical infection, bowel anastomotic leaks, acute kidney injury, respiratory failure and brain injury. As a strategy to reduce dysbiosis, the use of probiotics (live bacterial cultures that confer health benefits) or synbiotics (probiotic in combination with food that encourages the growth of gut commensal bacteria) in surgical and critically ill patients has been increasingly reported to confer important clinical benefits, including a reduction in ventilator-associated pneumonia, bacteraemia and length of hospital stay, in small randomised controlled trials. However, the best strategy to modulate dysbiosis or counteract its potential harms remains uncertain and requires investigation by a well-designed, adequately powered, randomised controlled trial.
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Affiliation(s)
- Kwok M Ho
- Department of Intensive Care Medicine, Royal Perth Hospital, Perth, Australia.,School of Veterinary and Life Sciences, Murdoch University, Perth, Australia.,Medical School, University of Western Australia, Perth, Australia
| | - Shankar Kalgudi
- Department of Intensive Care Medicine, Royal Perth Hospital, Perth, Australia
| | - Jade-Marie Corbett
- Department of Intensive Care Medicine, Royal Perth Hospital, Perth, Australia
| | - Edward Litton
- Medical School, University of Western Australia, Perth, Australia.,Department of Intensive Care Medicine, Fiona Stanley Hospital, Murdoch, Australia
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119
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Affiliation(s)
- John A Hawley
- Exercise and Nutrition Research Program, Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, Victoria, Australia.
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120
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Stacchiotti A, Favero G, Rodella LF. Impact of Melatonin on Skeletal Muscle and Exercise. Cells 2020; 9:cells9020288. [PMID: 31991655 PMCID: PMC7072499 DOI: 10.3390/cells9020288] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/14/2020] [Accepted: 01/22/2020] [Indexed: 12/18/2022] Open
Abstract
Skeletal muscle disorders are dramatically increasing with human aging with enormous sanitary costs and impact on the quality of life. Preventive and therapeutic tools to limit onset and progression of muscle frailty include nutrition and physical training. Melatonin, the indole produced at nighttime in pineal and extra-pineal sites in mammalians, has recognized anti-aging, anti-inflammatory, and anti-oxidant properties. Mitochondria are the favorite target of melatonin, which maintains them efficiently, scavenging free radicals and reducing oxidative damage. Here, we discuss the most recent evidence of dietary melatonin efficacy in age-related skeletal muscle disorders in cellular, preclinical, and clinical studies. Furthermore, we analyze the emerging impact of melatonin on physical activity. Finally, we consider the newest evidence of the gut-muscle axis and the influence of exercise and probably melatonin on the microbiota. In our opinion, this review reinforces the relevance of melatonin as a safe nutraceutical that limits skeletal muscle frailty and prolongs physical performance.
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Affiliation(s)
- Alessandra Stacchiotti
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy; (G.F.); (L.F.R.)
- Interdepartmental University Center of Research “Adaptation and Regeneration of Tissues and Organs (ARTO)”, University of Brescia, 25123 Brescia, Italy
- Correspondence: ; Tel.: +39-030-3717478; Fax: +39-030-3717486
| | - Gaia Favero
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy; (G.F.); (L.F.R.)
| | - Luigi Fabrizio Rodella
- Anatomy and Physiopathology Division, Department of Clinical and Experimental Sciences, University of Brescia, Viale Europa 11, 25123 Brescia, Italy; (G.F.); (L.F.R.)
- Interdepartmental University Center of Research “Adaptation and Regeneration of Tissues and Organs (ARTO)”, University of Brescia, 25123 Brescia, Italy
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121
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Hughes RL. A Review of the Role of the Gut Microbiome in Personalized Sports Nutrition. Front Nutr 2020; 6:191. [PMID: 31998739 PMCID: PMC6966970 DOI: 10.3389/fnut.2019.00191] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/12/2019] [Indexed: 12/15/2022] Open
Abstract
The gut microbiome is a key factor in determining inter-individual variability in response to diet. Thus, far, research in this area has focused on metabolic health outcomes such as obesity and type 2 diabetes. However, understanding the role of the gut microbiome in determining response to diet may also lead to improved personalization of sports nutrition for athletic performance. The gut microbiome has been shown to modify the effect of both diet and exercise, making it relevant to the athlete's pursuit of optimal performance. This area of research can benefit from recent developments in the general field of personalized nutrition and has the potential to expand our knowledge of the nexus between the gut microbiome, lifestyle, and individual physiology.
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Affiliation(s)
- Riley L. Hughes
- Department of Nutrition, University of California, Davis, Davis, CA, United States
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122
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Barger K, Langsetmo L, Orwoll ES, Lustgarten MS. Investigation of the Diet-Gut-Muscle Axis in the Osteoporotic Fractures in Men Study. J Nutr Health Aging 2020; 24:445-452. [PMID: 32242213 PMCID: PMC7524010 DOI: 10.1007/s12603-020-1344-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVES To investigate the association between dietary fiber density (grams of fiber consumed per 100 kcal) with the gut-muscle axis in older adult men. DESIGN Cross-sectional study. SETTING Osteoporotic Fractures in Men (MrOS) cohort participants at Visit 4 (2014-16). PARTICIPANTS Older adult men (average age, 85y) from the MrOS study. MEASUREMENTS Men who were in the highest tertiles for dietary fiber density and the percentage of whole body lean mass were defined as T3T3 (n=42), whereas men who were in the lowest and intermediate tertiles for these variables were defined as T1T1 (n=32), T1T3 (n=24), and T3T1 (n=13), respectively. Additionally, measures of physical function, including the short physical performance battery (SPPB) score and grip strength were higher in T3T3 when compared with T1T1. Gut bacterial abundance was quantified with use of 16S v4 rRNA sequencing, and the bacterial functional potential was derived from the 16S data with PICRUSt. Chao1, ACE, Shannon, Simpson, and Fisher indices were used as measures of α-diversity. Weighted and unweighted Unifrac, and Bray-Curtis were used as measures of β-diversity. Age, physical activity score, smoking, and number of medications-adjusted DESeq2 models were used to identify bacteria and functions that were different when comparing T3T3 with T1T1, but that were not also different when comparing T3T3 with T1T3 or T3T1. RESULTS α-diversity was not different, but significant differences for β-diversity (unweighted UniFrac, Bray-Curtis) were identified when comparing T3T3 with T1T1. Known butyrate-producing bacteria, including Ruminococcus, Lachnospira, and Clostridia, and gene counts for butyrate production (KEGG IDs: K01034, K01035) were higher in T3T3, when compared with T1T1. CONCLUSION These data suggest that a high-fiber diet may positively impact butyrate-producing genera and gene counts, which collectively may be involved in mechanisms related to the percentage of whole body lean mass and physical functioning in older adult men. Future studies aimed at testing the causative role of this hypothesis are of interest.
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Affiliation(s)
- K Barger
- Michael S. Lustgarten, Ph.D. Nutrition, Exercise Physiology and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, 711 Washington Street, Boston, MA 02111, USA, Phone: (617) 556-3019, Fax: (617) 556-3083,
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Herremans KM, Riner AN, Cameron ME, Trevino JG. The Microbiota and Cancer Cachexia. Int J Mol Sci 2019; 20:ijms20246267. [PMID: 31842339 PMCID: PMC6940781 DOI: 10.3390/ijms20246267] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Revised: 12/05/2019] [Accepted: 12/10/2019] [Indexed: 12/12/2022] Open
Abstract
Cancer cachexia is a multifactorial syndrome defined by weight loss, muscle wasting, and systemic inflammation. It affects the majority of patients with advanced cancer and is associated with poor treatment response, early mortality and decreased quality of life. The microbiota has been implicated in cancer cachexia through pathways of systemic inflammation, gut barrier dysfunction and muscle wasting. The imbalance of the microbiota, known as dysbiosis, has been shown to influence cancer cachexia. Bacteria that play beneficial and detrimental roles in the disease pathogenesis have been identified. The phenotype of cancer cachexia is associated with decreased levels of Lactobacillales and increased levels of Enterobacteriaceae and Parabacteroides. Currently, there are no treatment options that demonstrate increased survival or the quality of life in patients suffering from cancer cachexia. Through the manipulation of beneficial bacteria in the gut microbiota, different treatment options have been explored. Prebiotics and probiotics have been shown to improve outcomes in animal models of cachexia. Expounding on this mechanism, fecal microbiota transplant (FMT) holds promise for a future treatment of cancer cachexia. Further research is necessary to address this detrimental disease process and improve the lives of patients suffering from cancer cachexia.
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Lustgarten MS. The Role of the Gut Microbiome on Skeletal Muscle Mass and Physical Function: 2019 Update. Front Physiol 2019; 10:1435. [PMID: 31911785 PMCID: PMC6933299 DOI: 10.3389/fphys.2019.01435] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 11/07/2019] [Indexed: 12/12/2022] Open
Abstract
Within the past year, several studies have reported a positive role for the gut microbiome on the maintenance of skeletal muscle mass, evidence that contrasts previous reports of a negative role for the gut microbiome on the maintenance of whole body lean mass. The purpose of this mini-review is to clarify these seemingly discordant findings, and to review recently published studies that further elucidate the gut-muscle axis.
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Affiliation(s)
- Michael S Lustgarten
- Nutrition, Exercise Physiology, and Sarcopenia Laboratory, Jean Mayer United States Department of Agriculture Human Nutrition Research Center (HNRCA), Tufts University, Boston, MA, United States
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Villéger R, Lopès A, Carrier G, Veziant J, Billard E, Barnich N, Gagnière J, Vazeille E, Bonnet M. Intestinal Microbiota: A Novel Target to Improve Anti-Tumor Treatment? Int J Mol Sci 2019; 20:ijms20184584. [PMID: 31533218 PMCID: PMC6770123 DOI: 10.3390/ijms20184584] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/12/2019] [Accepted: 09/13/2019] [Indexed: 12/18/2022] Open
Abstract
Recently, preclinical and clinical studies targeting several types of cancer strongly supported the key role of the gut microbiota in the modulation of host response to anti-tumoral therapies such as chemotherapy, immunotherapy, radiotherapy and even surgery. Intestinal microbiome has been shown to participate in the resistance to a wide range of anticancer treatments by direct interaction with the treatment or by indirectly stimulating host response through immunomodulation. Interestingly, these effects were described on colorectal cancer but also in other types of malignancies. In addition to their role in therapy efficacy, gut microbiota could also impact side effects induced by anticancer treatments. In the first part of this review, we summarized the role of the gut microbiome on the efficacy and side effects of various anticancer treatments and underlying mechanisms. In the second part, we described the new microbiota-targeting strategies, such as probiotics and prebiotics, antibiotics, fecal microbiota transplantation and physical activity, which could be effective adjuvant therapies developed in order to improve anticancer therapeutic efficiency.
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Affiliation(s)
- Romain Villéger
- Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH) UMR 1071 Inserm/Université Clermont Auvergne, USC-INRA 2018, CRNH Auvergne, F-63000 Clermont-Ferrand, France.
| | - Amélie Lopès
- Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH) UMR 1071 Inserm/Université Clermont Auvergne, USC-INRA 2018, CRNH Auvergne, F-63000 Clermont-Ferrand, France.
- Biologics Research, Sanofi R&D, 94400 Vitry-Sur-Seine, France.
| | - Guillaume Carrier
- Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH) UMR 1071 Inserm/Université Clermont Auvergne, USC-INRA 2018, CRNH Auvergne, F-63000 Clermont-Ferrand, France.
- Surgical Oncology Department, Institut du Cancer de Montpellier (ICM), Univ Montpellier, 34298 Montpellier, France.
| | - Julie Veziant
- Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH) UMR 1071 Inserm/Université Clermont Auvergne, USC-INRA 2018, CRNH Auvergne, F-63000 Clermont-Ferrand, France.
- Service de Chirurgie Digestive, CHU Clermont-Ferrand, Inserm, Université Clermont Auvergne, 63003 Clermont-Ferrand, France.
- 3iHP, CHU Clermont-Ferrand, Inserm, Université Clermont Auvergne, 63003 Clermont-Ferrand, France.
| | - Elisabeth Billard
- Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH) UMR 1071 Inserm/Université Clermont Auvergne, USC-INRA 2018, CRNH Auvergne, F-63000 Clermont-Ferrand, France.
| | - Nicolas Barnich
- Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH) UMR 1071 Inserm/Université Clermont Auvergne, USC-INRA 2018, CRNH Auvergne, F-63000 Clermont-Ferrand, France.
| | - Johan Gagnière
- Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH) UMR 1071 Inserm/Université Clermont Auvergne, USC-INRA 2018, CRNH Auvergne, F-63000 Clermont-Ferrand, France.
- Service de Chirurgie Digestive, CHU Clermont-Ferrand, Inserm, Université Clermont Auvergne, 63003 Clermont-Ferrand, France.
- 3iHP, CHU Clermont-Ferrand, Inserm, Université Clermont Auvergne, 63003 Clermont-Ferrand, France.
| | - Emilie Vazeille
- Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH) UMR 1071 Inserm/Université Clermont Auvergne, USC-INRA 2018, CRNH Auvergne, F-63000 Clermont-Ferrand, France.
- 3iHP, CHU Clermont-Ferrand, Inserm, Université Clermont Auvergne, 63003 Clermont-Ferrand, France.
- Service d'Hépato-gastro-entérologie, CHU Clermont-Ferrand, Inserm, Université Clermont Auvergne, 63003 Clermont-Ferrand, France.
| | - Mathilde Bonnet
- Microbes, Intestin, Inflammation et Susceptibilité de l'Hôte (M2iSH) UMR 1071 Inserm/Université Clermont Auvergne, USC-INRA 2018, CRNH Auvergne, F-63000 Clermont-Ferrand, France.
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Sohail MU, Yassine HM, Sohail A, Al Thani AA. Impact of Physical Exercise on Gut Microbiome, Inflammation, and the Pathobiology of Metabolic Disorders. Rev Diabet Stud 2019; 15:35-48. [PMID: 31380886 DOI: 10.1900/rds.2019.15.35] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The gastrointestinal tract (GIT) harbors a complex and diverse microbial composition that outnumbers our own body cells and their gene contents. These microbes play a significant role in host metabolism and energy homeostasis. Emerging evidence suggests that the GIT microbiome significantly contributes to host health and that impairments in the microbiome may cause the development of metabolic diseases. The microbiome architecture is shaped by several genetic and environmental factors, including nutrition and physical activity. Physical exercise has preventive or therapeutic effects in respiratory, cardiovascular, neuroendocrine, and muscular diseases. Yet, we still have little information of the beneficial effects of physical exercise on GIT health and microbial composition. Furthermore, we are not aware whether exercise-derived benefits on microbiome diversity can beneficially influence other tissues and body organs. OBJECTIVES The aim of this article is to review the available literature on exercise-induced microbiome changes and to explain how these changes may induce inflammatory, immune, and oxidative responses that may contribute to the improvement of metabolic disorders. METHODS A systemic and comprehensive search of the relevant literature using MEDLINE and Google Scholar databases was conducted during fall 2018 and spring 2019. The search identified sixty-two research and review articles that discussed exercise-induced microbiome changes. RESULTS The review of the relevant literature suggests that exercise-induced microbial changes affect the host's immune pathways and improve energy homeostasis. Microbes release certain neuroendocrine and immune-modulatory factors that may lower inflammatory and oxidative stress and relieve patients suffering from metabolic disorders. CONCLUSIONS Exercise-induced changes in microbial diversity are able to improve tissue metabolism, cardiorespiratory fitness, and insulin resistance.
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Affiliation(s)
- Muhammad U Sohail
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Hadi M Yassine
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
| | - Aaqib Sohail
- Research Group Biomarkers for Infectious Diseases, TWINCORE Centre for Clinical and Experimental Infection Research, Hannover, Germany
| | - Asmaa A Al Thani
- Biomedical Research Center, Qatar University, P.O. Box 2713, Doha, Qatar
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Gut Microbiota, Muscle Mass and Function in Aging: A Focus on Physical Frailty and Sarcopenia. Nutrients 2019; 11:nu11071633. [PMID: 31319564 PMCID: PMC6683074 DOI: 10.3390/nu11071633] [Citation(s) in RCA: 191] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/10/2019] [Accepted: 07/15/2019] [Indexed: 02/07/2023] Open
Abstract
Human gut microbiota is able to influence the host physiology by regulating multiple processes, including nutrient absorption, inflammation, oxidative stress, immune function, and anabolic balance. Aging is associated with reduced microbiota biodiversity, increased inter-individual variability, and over-representation of pathobionts, and these phenomena may have great relevance for skeletal muscle mass and function. For this reason, the presence of a gut-muscle axis regulating the onset and progression of age-related physical frailty and sarcopenia has been recently hypothesized. In this narrative review, we summarize the studies supporting a possible association between gut microbiota-related parameters with measures of muscle mass, muscle function, and physical performance in animal models and humans. Reduced muscle mass has been associated with distinct microbiota composition and reduced fermentative capacity in mice, and the administration of probiotics or butyrate to mouse models of muscle wasting has been associated with improved muscle mass. However, no studies have targeted the human microbiome associated with sarcopenia. Limited evidence from human studies shows an association between microbiota composition, involving key taxa such as Faecalibacterium and Bifidobacterium, and grip strength. Similarly, few studies conducted on patients with parkinsonism showed a trend towards a different microbiota composition in those with reduced gait speed. No studies have assessed the association of fecal microbiota with other measures of physical performance. However, several studies, mainly with a cross-sectional design, suggest an association between microbiota composition and frailty, mostly assessed according to the deficit accumulation model. Namely, frailty was associated with reduced microbiota biodiversity, and lower representation of butyrate-producing bacteria. Therefore, we conclude that the causal link between microbiota and physical fitness is still uncertain due to the lack of targeted studies and the influence of a large number of covariates, including diet, exercise, multimorbidity, and polypharmacy, on both microbiota composition and physical function in older age. However, the relationship between gut microbiota and physical function remains a very promising area of research for the future.
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