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Gupta A, Nicholas R, McGing JJ, Nixon AV, Mallinson JE, McKeever TM, Bradley CR, Piasecki M, Cox EF, Bonnington J, Lord JM, Brightling CE, Evans RA, Hall IP, Francis ST, Greenhaff PL, Bolton CE. DYNamic assessment of multi-organ level dysfunction in patients recovering from COVID-19: DYNAMO COVID-19. Exp Physiol 2024. [PMID: 38923603 DOI: 10.1113/ep091590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 05/22/2024] [Indexed: 06/28/2024]
Abstract
We evaluated the impacts of COVID-19 on multi-organ and metabolic function in patients following severe hospitalised infection compared to controls. Patients (n = 21) without previous diabetes, cardiovascular or cerebrovascular disease were recruited 5-7 months post-discharge alongside controls (n = 10) with similar age, sex and body mass. Perceived fatigue was estimated (Fatigue Severity Scale) and the following were conducted: oral glucose tolerance (OGTT) alongside whole-body fuel oxidation, validated magnetic resonance imaging and spectroscopy during resting and supine controlled exercise, dual-energy X-ray absorptiometry, short physical performance battery (SPPB), intra-muscular electromyography, quadriceps strength and fatigability, and daily step-count. There was a greater insulin response (incremental area under the curve, median (inter-quartile range)) during the OGTT in patients [18,289 (12,497-27,448) mIU/min/L] versus controls [8655 (7948-11,040) mIU/min/L], P < 0.001. Blood glucose response and fasting and post-prandial fuel oxidation rates were not different. This greater insulin resistance was not explained by differences in systemic inflammation or whole-body/regional adiposity, but step-count (P = 0.07) and SPPB scores (P = 0.004) were lower in patients. Liver volume was 28% greater in patients than controls, and fat fraction adjusted liver T1, a measure of inflammation, was raised in patients. Patients displayed greater perceived fatigue scores, though leg muscle volume, strength, force-loss, motor unit properties and post-exercise muscle phosphocreatine resynthesis were comparable. Further, cardiac and cerebral architecture and function (at rest and on exercise) were not different. In this cross-sectional study, individuals without known previous morbidity who survived severe COVID-19 exhibited greater insulin resistance, pointing to a need for physical function intervention in recovery.
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Affiliation(s)
- Ayushman Gupta
- NIHR Nottingham Biomedical Research Centre, Nottingham, UK
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
- Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Rosemary Nicholas
- Sir Peter Mansfield Imaging Centre, School of Physics & Astronomy, University of Nottingham, Nottingham, UK
| | - Jordan J McGing
- David Greenfield Human Physiology Unit, School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Aline V Nixon
- David Greenfield Human Physiology Unit, School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Joanne E Mallinson
- David Greenfield Human Physiology Unit, School of Life Sciences, University of Nottingham, Nottingham, UK
| | - Tricia M McKeever
- NIHR Nottingham Biomedical Research Centre, Nottingham, UK
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
| | - Christopher R Bradley
- Sir Peter Mansfield Imaging Centre, School of Physics & Astronomy, University of Nottingham, Nottingham, UK
| | - Mathew Piasecki
- NIHR Nottingham Biomedical Research Centre, Nottingham, UK
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Nottingham, Nottingham, UK
| | - Eleanor F Cox
- Sir Peter Mansfield Imaging Centre, School of Physics & Astronomy, University of Nottingham, Nottingham, UK
| | | | - Janet M Lord
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, University of Birmingham, Birmingham, UK
| | | | - Rachael A Evans
- NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Ian P Hall
- NIHR Nottingham Biomedical Research Centre, Nottingham, UK
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
- Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Susan T Francis
- NIHR Nottingham Biomedical Research Centre, Nottingham, UK
- Sir Peter Mansfield Imaging Centre, School of Physics & Astronomy, University of Nottingham, Nottingham, UK
| | - Paul L Greenhaff
- NIHR Nottingham Biomedical Research Centre, Nottingham, UK
- David Greenfield Human Physiology Unit, School of Life Sciences, University of Nottingham, Nottingham, UK
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, University of Nottingham, Nottingham, UK
| | - Charlotte E Bolton
- NIHR Nottingham Biomedical Research Centre, Nottingham, UK
- Centre for Respiratory Research, Translational Medical Sciences, School of Medicine, University of Nottingham, Nottingham, UK
- Nottingham University Hospitals NHS Trust, Nottingham, UK
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Gonsard A, Mekov E, Barron S, Castellana G, Khurtsidze E, Vontetsianos A, Pennati F, Sivapalan P, Latimer LE, Marillier M, Hui CY, Kaltsakas G, Kolekar S, Vagheggini G, Vicente C, Drummond D, Poberezhets V, Bayat S, Franssen FM, Vogiatzis I, Gille T. ERS International Congress 2023: highlights from the Respiratory Clinical Care and Physiology Assembly. ERJ Open Res 2024; 10:00178-2024. [PMID: 38770003 PMCID: PMC11103686 DOI: 10.1183/23120541.00178-2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 02/26/2024] [Indexed: 05/22/2024] Open
Abstract
It is a challenge to keep abreast of all the clinical and scientific advances in the field of respiratory medicine. This article contains an overview of laboratory-based science, clinical trials and qualitative research that were presented during the 2023 European Respiratory Society International Congress within the sessions from the five groups of Assembly 1 (Respiratory Clinical Care and Physiology). Selected presentations are summarised from a wide range of topics: clinical problems, rehabilitation and chronic care, general practice and primary care, electronic/mobile health (e-health/m-health), clinical respiratory physiology, exercise and functional imaging.
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Affiliation(s)
- Apolline Gonsard
- Department of Paediatric Pulmonology and Allergology, University Hospital Necker-Enfants Malades, AP-HP and Université Paris Cité, Paris, France
- These authors have contributed equally to this work and share first authorship
| | - Evgeni Mekov
- Department of Pulmonary Diseases, Medical Faculty, Medical University of Sofia, Sofia, Bulgaria
- These authors have contributed equally to this work and share first authorship
| | - Sarah Barron
- Tallaght University Hospital, Dublin, Ireland
- These authors have contributed equally to this work and share first authorship
| | - Giorgio Castellana
- Istituti Clinici Scientifici Maugeri SpA SB, IRCCS, Institute of Bari, Bari, Italy
- These authors have contributed equally to this work and share first authorship
| | - Elene Khurtsidze
- Alte University, Tbilisi, Georgia
- Clinical Department, Geo Hospitals, Tbilisi, Georgia
- These authors have contributed equally to this work and share first authorship
| | - Angelos Vontetsianos
- 1st Respiratory Medicine Department, “Sotiria” Hospital for Diseases of the Chest, National and Kapodistrian University of Athens Medical School, Athens, Greece
- These authors have contributed equally to this work and share first authorship
| | - Francesca Pennati
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy
- These authors have contributed equally to this work and share first authorship
| | - Pradeesh Sivapalan
- Section of Respiratory Medicine, Department of Medicine, Herlev-Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
- University of Copenhagen, Faculty of Health Sciences, Department of Clinical Medicine, Copenhagen, Denmark
- These authors have contributed equally to this work and share first authorship
| | - Lorna E. Latimer
- Department of Respiratory Sciences, University of Leicester, Leicester, UK
- Institute for Lung Health, National Institute for Health Research Leicester Biomedical Research Centre – Respiratory, Glenfield Hospital, Leicester, UK
- These authors have contributed equally to this work and share first authorship
| | - Mathieu Marillier
- Université Grenoble Alpes, Inserm, Laboratoire HP2, Grenoble, France
- Laboratory of Clinical Exercise Physiology, Queen's University, Kingston, ON, Canada
- These authors have contributed equally to this work and share first authorship
| | - Chi-Yan Hui
- The University of Edinburgh, Allergy and Respiratory Research Group, Usher Institute, Edinburgh, UK
- These authors have contributed equally to this work and share first authorship
| | - Georgios Kaltsakas
- 1st Respiratory Medicine Department, “Sotiria” Hospital for Diseases of the Chest, National and Kapodistrian University of Athens Medical School, Athens, Greece
- Lane Fox Respiratory Service, Guy's and St Thomas’ NHS Foundation Trust, London, UK
- Centre of Human and Applied Physiological Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK
| | - Shailesh Kolekar
- University of Copenhagen, Faculty of Health Sciences, Department of Clinical Medicine, Copenhagen, Denmark
- Zealand University Hospital Roskilde, Department of Internal Medicine, Roskilde, Denmark
| | - Guido Vagheggini
- Azienda USL Toscana Nord Ovest, Department of Medical Specialties, Chronic Respiratory Failure Care Pathway, Volterra, Italy
- Fondazione Volterra Ricerche Onlus, Volterra, Italy
| | | | - David Drummond
- Department of Paediatric Pulmonology and Allergology, University Hospital Necker-Enfants Malades, AP-HP and Université Paris Cité, Paris, France
- Inserm UMR 1138, HeKA team, Centre de Recherche des Cordeliers, Paris, France
| | - Vitalii Poberezhets
- Department of Propedeutics of Internal Medicine, National Pirogov Memorial Medical University, Vinnytsya, Ukraine
| | - Sam Bayat
- CHU Grenoble Alpes, Service de Pneumologie et de Physiologie, Grenoble, France
- Université Grenoble Alpes, Inserm UA07 STROBE, Grenoble, France
| | - Frits M.E. Franssen
- Maastricht Universitair Medisch Centrum+, Department of Respiratory Medicine, Maastricht, The Netherlands
| | - Ioannis Vogiatzis
- Department of Sport, Exercise and Rehabilitation, Faculty of Health and Life Sciences, Northumbria University Newcastle, Newcastle upon Tyne, UK
| | - Thomas Gille
- Physiologie et Explorations Fonctionnelles, DMU NARVAL, Hôpitaux Universitaires de Paris Seine-Saint-Denis, AP-HP, Bobigny, France
- Inserm UMR 1272 “Hypoxia & the Lung”, UFR SMBH Léonard de Vinci, Université Sorbonne Paris Nord, Bobigny, France
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Taylor JA, Greenhaff PL, Bartlett DB, Jackson TA, Duggal NA, Lord JM. Multisystem physiological perspective of human frailty and its modulation by physical activity. Physiol Rev 2023; 103:1137-1191. [PMID: 36239451 PMCID: PMC9886361 DOI: 10.1152/physrev.00037.2021] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
"Frailty" is a term used to refer to a state characterized by enhanced vulnerability to, and impaired recovery from, stressors compared with a nonfrail state, which is increasingly viewed as a loss of resilience. With increasing life expectancy and the associated rise in years spent with physical frailty, there is a need to understand the clinical and physiological features of frailty and the factors driving it. We describe the clinical definitions of age-related frailty and their limitations in allowing us to understand the pathogenesis of this prevalent condition. Given that age-related frailty manifests in the form of functional declines such as poor balance, falls, and immobility, as an alternative we view frailty from a physiological viewpoint and describe what is known of the organ-based components of frailty, including adiposity, the brain, and neuromuscular, skeletal muscle, immune, and cardiovascular systems, as individual systems and as components in multisystem dysregulation. By doing so we aim to highlight current understanding of the physiological phenotype of frailty and reveal key knowledge gaps and potential mechanistic drivers of the trajectory to frailty. We also review the studies in humans that have intervened with exercise to reduce frailty. We conclude that more longitudinal and interventional clinical studies are required in older adults. Such observational studies should interrogate the progression from a nonfrail to a frail state, assessing individual elements of frailty to produce a deep physiological phenotype of the syndrome. The findings will identify mechanistic drivers of frailty and allow targeted interventions to diminish frailty progression.
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Affiliation(s)
- Joseph A Taylor
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom
| | - Paul L Greenhaff
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom.,NIHR Nottingham Biomedical Research Centre, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom
| | - David B Bartlett
- Division of Medical Oncology, Department of Medicine, Duke University, Durham, North Carolina.,Department of Nutritional Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, United Kingdom
| | - Thomas A Jackson
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, https://ror.org/03angcq70University of Birmingham, Birmingham, United Kingdom
| | - Niharika A Duggal
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, https://ror.org/03angcq70University of Birmingham, Birmingham, United Kingdom
| | - Janet M Lord
- MRC-Versus Arthritis Centre for Musculoskeletal Ageing Research, Institute of Inflammation and Ageing, https://ror.org/03angcq70University of Birmingham, Birmingham, United Kingdom.,NIHR Birmingham Biomedical Research Centre, University Hospital Birmingham and University of Birmingham, Birmingham, United Kingdom
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Calverley PMA, Walker PP. Contemporary Concise Review 2022: Chronic obstructive pulmonary disease. Respirology 2023; 28:428-436. [PMID: 36922031 DOI: 10.1111/resp.14489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 03/02/2023] [Indexed: 03/17/2023]
Abstract
International respiratory organizations now recommend using lower limit of normal and standardized residuals to diagnose airflow obstruction and COPD though using a fixed ratio <0.7 is simpler and robustly predicts important clinical outcomes. The most common COPD comorbidities are coronary artery calcification, emphysema and bronchiectasis. COPD patients with psychological (high anxiety and depression) and cachectic (underweight and osteoporotic) comorbidity have higher mortality and exacerbate more. Serum eosinophil count remains an important COPD biomarker and we have greater clarity about normal eosinophil levels in COPD and the wider population. Criteria for entry into COPD clinical trials continue to exclude many patients, in particular those at greater risk of exacerbation and death. The effect of hyperinflation on cardiac function impacts COPD mortality and is an important target for successful lung volume reduction procedures.
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Affiliation(s)
- Peter M A Calverley
- Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, UK
| | - Paul P Walker
- School of Health and Life Sciences, University of Liverpool, Liverpool, UK
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Jakobsson J, De Brandt J, Nyberg A. Physiological responses and adaptations to exercise training in people with or without chronic obstructive pulmonary disease: protocol for a systematic review and meta-analysis. BMJ Open 2022; 12:e065832. [PMID: 36123050 PMCID: PMC9486278 DOI: 10.1136/bmjopen-2022-065832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION Exercise training is a cornerstone in managing chronic obstructive pulmonary disease (COPD), leading to several physiological adaptations including, but not limited to, structural and muscular alterations, increased exercise capacity and improved cognitive function. Still, it is not uncommon that the acute physiological response to an exercise session and the extent of chronic adaptations to exercise training are altered compared with people without COPD. To date, potential differences in acute physiological responses and chronic adaptations in people with or without COPD are not fully understood, and results from individual studies are contradictory. Therefore, the current study aims to synthesise and compare the acute physiological responses and chronic adaptations to exercise training in people with COPD compared with people without COPD. METHODS AND ANALYSES A systematic review of randomised controlled trials (RCTs), non-randomised studies of interventions (NRSIs) and cross-sectional studies (CSSs) will be conducted. A comprehensive search strategy will identify relevant studies from MEDLINE, Scopus, CINAHL, SPORTDiscus, CENTRAL and Cochrane Airways Trials Register databases. Studies including adults with and without COPD will be considered. Outcomes will include cardiorespiratory, muscular and cognitive function, intramuscular adaptations, lung volumes and cardiometabolic responses. The protocol is reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols and the Cochrane Methodological Expectations of Cochrane Intervention Reviews. Risk of bias assessment will be conducted using Cochrane Risk-of-Bias 2 Tool (for RCTs), Risk-of-Bias in Non-Randomised Studies Tool (for NRSIs) and Downs and Black checklist (for CSS). Meta-analyses will be conducted when appropriate, supplemented with a systematic synthesis without meta-analysis. ETHICS AND DISSEMINATION As this study is a systematic review, ethical approval is not required. The final review results will be submitted for publication in a peer-reviewed journal and presented at international conferences. PROSPERO REGISTRATION NUMBER CRD42022307577.
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Affiliation(s)
- Johan Jakobsson
- Department of Community Medicine and Rehabilitation, Physiotherapy, Umea University, Umea, Sweden
| | - Jana De Brandt
- Department of Community Medicine and Rehabilitation, Physiotherapy, Umea University, Umea, Sweden
| | - André Nyberg
- Department of Community Medicine and Rehabilitation, Physiotherapy, Umea University, Umea, Sweden
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Taivassalo T, Hepple RT. Integrating Mechanisms of Exacerbated Atrophy and Other Adverse Skeletal Muscle Impact in COPD. Front Physiol 2022; 13:861617. [PMID: 35721564 PMCID: PMC9203961 DOI: 10.3389/fphys.2022.861617] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Accepted: 05/11/2022] [Indexed: 11/13/2022] Open
Abstract
The normal decline in skeletal muscle mass that occurs with aging is exacerbated in patients with chronic obstructive pulmonary disease (COPD) and contributes to poor health outcomes, including a greater risk of death. There has been controversy about the causes of this exacerbated muscle atrophy, with considerable debate about the degree to which it reflects the very sedentary nature of COPD patients vs. being precipitated by various aspects of the COPD pathophysiology and its most frequent proximate cause, long-term smoking. Consistent with the latter view, recent evidence suggests that exacerbated aging muscle loss with COPD is likely initiated by decades of smoking-induced stress on the neuromuscular junction that predisposes patients to premature failure of muscle reinnervation capacity, accompanied by various alterations in mitochondrial function. Superimposed upon this are various aspects of COPD pathophysiology, such as hypercapnia, hypoxia, and inflammation, that can also contribute to muscle atrophy. This review will summarize the available knowledge concerning the mechanisms contributing to exacerbated aging muscle affect in COPD, consider the potential role of comorbidities using the specific example of chronic kidney disease, and identify emerging molecular mechanisms of muscle impairment, including mitochondrial permeability transition as a mechanism of muscle atrophy, and chronic activation of the aryl hydrocarbon receptor in driving COPD muscle pathophysiology.
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Affiliation(s)
- Tanja Taivassalo
- Department of Physiology and Functional Genomics, University of Florida, Gainesville, FL, United States
| | - Russell T. Hepple
- Department of Physiology and Functional Genomics, University of Florida, Gainesville, FL, United States
- Department of Physical Therapy, University of Florida, Gainesville, FL, United States
- *Correspondence: Russell T. Hepple,
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