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Nici L. Pulmonary Rehabilitation: Mechanisms of Functional Loss and Benefits of Exercise. Respir Care 2024; 69:640-650. [PMID: 38503465 PMCID: PMC11147626 DOI: 10.4187/respcare.11705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
Exercise limitation is a characteristic feature of chronic respiratory diseases such as COPD and is associated with poor outcomes including decreased functional status and health-related quality of life and increased mortality. The mechanisms responsible for exercise limitation are complex and include ventilatory limitation, cardiovascular impairment, and skeletal muscle dysfunction. In addition, comorbidities such as cardiovascular disease are common in this population and can further impact exercise capacity. Exercise training, a core component of pulmonary rehabilitation, improves exercise capacity by addressing many of these mechanisms that, in turn, can potentially slow the decline of lung function, reduce the frequency of exacerbations, and decrease mortality. This article will discuss the mechanisms of exercise limitation in individuals with chronic respiratory disease, primarily focusing on COPD, and provide an overview of exercise training and its benefits in this patient population.
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Affiliation(s)
- Linda Nici
- The Warren Alpert Medical School of Brown University, Providence, Rhode Island; and Pulmonary and Critical Care Section, Providence Veterans Affairs Medical Center, Providence, Rhode Island.
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2
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Tabberer M, Williamson N, Tatlock S, Gater A, Grimes R, Akinseye C, Neil D, Mahon-Smith A, Nelsen L. Qualitative interviews of patients with COPD and muscle weakness enrolled in a clinical trial evaluating a new anabolic treatment: patient perspectives of disease experience, trial participation and outcome assessments. J Patient Rep Outcomes 2024; 8:45. [PMID: 38641716 PMCID: PMC11031513 DOI: 10.1186/s41687-024-00712-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 03/10/2024] [Indexed: 04/21/2024] Open
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD) and muscle weakness can cause impaired physical function, significantly impacting patients' health-related quality of life (HRQoL). Loss of muscle strength is usually assessed through clinical and performance outcome (PerfO) assessments, which consists of tasks performed in a standardized manner, providing evidence of a patient's functional ability. However, evidence documenting the patient experience of COPD and muscle weakness is limited. METHODS This two-stage qualitative study used semi-structured interviews in patients aged 45-80 years with COPD (post-bronchodilator forced expiratory volume in 1s [FEV1]/forced vital capacity ratio < 0.70, and FEV1% predicted of 30-80%) and muscle weakness. In Stage 1, 30-minute concept elicitation interviews were conducted with participants recruited across three US sites to explore impacts on physical functioning and activities of daily living. In Stage 2, interviews were performed with participants exiting a Phase IIa trial investigating the efficacy of a selective androgen receptor modulator (GSK2881078) on leg strength, whereby PerfOs were used to evaluate strength and physical functioning endpoints. These participants completed either 60-minute in-depth (n = 32) or 15-minute confirmatory (n = 35) interviews exploring trial experience, completion of outcome measures, disease experience and treatment satisfaction. RESULTS In Stage 1 (n = 20), most participants described their muscles as weak (83.3%). Difficulties with walking (100%) and lifting heavy objects (90%) were reported. In Stage 2, 60-minute interviews, all participants (n = 32) reported a positive trial experience. Most participants reported that the home exercise program was easy to fit into daily life (77.8%), the PROactive daily diary was easy to complete (100%) and wearable sensors were easy to use (65.6%). However, technical issues were reported (71%), and few participants (19.4%) found physical assessments easy to complete. Improvements in muscle strength and functional limitations were reported by most participants. The shorter 15-minute confirmatory interviews (n = 35) supported the in-depth interview results. CONCLUSION The qualitative interviews generated in-depth evidence of key concepts relevant to patients with COPD and muscle weakness and support the assessments of patient strength and physical function as outcome measures in this population in future studies. TRIAL NUMBER GSK Stage 1: 206869; Stage 2: 200182, NCT03359473; Registered December 2, 2017, https://clinicaltrials.gov/ct2/show/NCT03359473 .
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Affiliation(s)
| | | | | | - Adam Gater
- PCO, Adelphi Values Ltd, Bollington, Cheshire, UK
| | | | | | - David Neil
- GSK R&D, 1250 S Collegeville Road, 19426, Collegeville, PA, USA
| | | | - Linda Nelsen
- GSK R&D, 1250 S Collegeville Road, 19426, Collegeville, PA, USA.
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3
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Wang J, Liu J, Shao J, Chen H, Cui L, Zhang P, Yao Y, Zhou J, Bao Z. Cigarette smoking inhibits myoblast regeneration by promoting proteasomal degradation of NPAT protein and hindering cell cycle progression. Curr Res Toxicol 2024; 6:100161. [PMID: 38496008 PMCID: PMC10940918 DOI: 10.1016/j.crtox.2024.100161] [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: 07/15/2023] [Revised: 02/16/2024] [Accepted: 03/01/2024] [Indexed: 03/19/2024] Open
Abstract
Cigarette smoking (CS) causes skeletal muscle dysfunction, leading to sarcopenia and worse prognosis of patients with diverse systemic diseases. Here, we found that CS exposure prevented C2C12 myoblasts proliferation in a dose-dependent manner. Immunoblotting assays verified that CS exposure promoted the expression of cell cycle suppressor protein p21. Furthermore, CS exposure significantly inhibited replication-dependent (RD) histone transcription and caused S phase arrest in the cell cycle during C2C12 proliferation. Mechanistically, CS deregulated the expression levels of Nuclear Protein Ataxia-Telangiectasia Locus (NPAT/p220). Notably, the proteasome inhibitor MG132 was able to reverse the expression of NPAT in myoblasts, implying that the degradation of CS-mediated NPAT is proteasome-dependent. Overexpression of NPAT also rescued the defective proliferation phenotype induced by CS in C2C12 myoblasts. Taken together, we suggest that CS exposure induces NPAT degradation in C2C12 myoblasts and impairs myogenic proliferation through NPAT associated proteasomal-dependent mechanisms. As an application of the proteasome inhibitor MG132 or overexpression of NPAT could reverse the impaired proliferation of myoblasts induced by CS, the recovery of myoblast proliferation may be potential strategies to treat CS-related skeletal muscle dysfunction.
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Affiliation(s)
- Jianfeng Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Jinling Liu
- Department of Pulmonology, the Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310058 China
| | - Jingjing Shao
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Hongyu Chen
- School of Medicine, Hangzhou City University, Hangzhou 310015, China
- Institute of Bioinformatics and James D. Watson Institute of Genome Sciences, Zhejiang University, Hangzhou 310058, China
| | - Luyun Cui
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Pei Zhang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Yinan Yao
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Jianying Zhou
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Zhang Bao
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
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4
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Chung AC, Chang CJ, Liu JF, Hung MS, Fang TP, Lin HL. The short- and long-term effects of lower limb endurance training on outpatients with chronic obstructive pulmonary disease. Clin Rehabil 2024; 38:85-97. [PMID: 37574917 DOI: 10.1177/02692155231192453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
OBJECTIVE To explore the short- and long-term effects of lower-limb endurance training on chronic obstructive pulmonary disease outpatients. DESIGN Prospective quasi-experimental study. SETTING 1383-bed teaching hospital in Taiwan. PARTICIPANTS Overall, 69 outpatients diagnosed with chronic obstructive pulmonary disease were enrolled. A total of 60 patients completed the study. INTERVENTION Training group: Lower-limb endurance training; control group: Education only. MAIN MEASURES The modified medical research council score, chronic obstructive pulmonary disease assessment test score, pulmonary function test, and number of acute exacerbation within a year. RESULTS The training group showed significant improvement in the chronic obstructive pulmonary disease assessment test total score, modified medical research council score (both P < 0.001) at third month sustaining to 12th month (P < 0.001) and presented less events of acute exacerbation (P = 0.011) at 12th month. The chronic obstructive pulmonary disease assessment test decreased by 8 points sustaining to 12th month. The training group presented significant post-training functional capacity improvements in 6-min walking distance, lowest oxygen saturation during 6-min walking test, peak workload, maximum inspiratory/ expiratory pressures, and calf circumference. CONCLUSIONS The lower-limb endurance training improved perceived dyspnea in daily activity and health status after completion of training and sustaining for a year. The lower-limb endurance training alleviated disease impacted on reduced acute exacerbations.
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Affiliation(s)
- An-Chi Chung
- Department of Respiratory Therapy, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
- Department of Physical Education, Health & Recreation, National Chiayi University-Minhsiung Campus, Chiayi, Taiwan
| | - Chun-Jung Chang
- Department of Respiratory Therapy, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
| | - Jui-Fang Liu
- Department of Respiratory Care, Chang Gung University and Technology, Chiayi, Taiwan
- Chronic Diseases and Health Promotion Research Centre, Chang Gung University of Science and Technology, Chiayi, Taiwan
| | - Ming-Szu Hung
- Department of Respiratory Therapy, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
- Department of Pulmonary and Critical Care Medicine, Chang Gung Memorial Hospital, Chiayi, Taiwan
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Tien-Pei Fang
- Department of Respiratory Therapy, Chiayi Chang Gung Memorial Hospital, Chiayi, Taiwan
- Department of Respiratory Care, Chang Gung University and Technology, Chiayi, Taiwan
| | - Hui-Ling Lin
- Department of Respiratory Therapy, Chang Gung University, Taoyuan, Taiwan
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5
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Gokcek O, Yurdalan U, Tugay BU, El C, Dogan S. Evaluation of the possible effect of inspiratory muscle training on inflammation markers and oxidative stress in childhood asthma. Eur J Pediatr 2023; 182:3713-3722. [PMID: 37285069 DOI: 10.1007/s00431-023-05047-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/08/2023]
Abstract
Airway inflammation characterized as asthma is one of the most common chronic diseases in the world. The aim of this study was to evaluate the possible effect of inspiratory muscle training on inflammation markers and oxidative stress levels in childhood asthma. A total of 105 children (age range 8-17 years), including 70 asthmatics and 35 healthy children, participated in the study. The 70 asthma patients were randomly assigned to the inspiratory muscle training (IMT) group (n = 35) and control group (n = 35), and healthy children were assigned to the healthy group (n = 35). The IMT group was treated with the threshold IMT device for 7 days/6 weeks at 30% of maximum inspiratory pressure. Respiratory muscle strength was evaluated with a mouth pressure measuring device, and respiratory function was evaluated with a spirometer. In addition, CRP, periostin, TGF-β, and oxidative stress levels were analyzed. The evaluation was performed only once in the healthy group and twice (at the beginning and end of 6 weeks) in asthma patients. In the study, there were significant differences between asthma patients and the healthy group in terms of MIP and MEP values, respiratory function, oxidative stress level, periostin, and TGF-β. Post-treatment, differences were observed in the oxidative stress level, periostin, and TGF-β of the IMT group (p < .05). CONCLUSION After 6 weeks of training, IMT positively contributed to reducing the inflammation level and oxidative stress. This suggests that IMT should be used as an alternative therapy to reduce inflammation and oxidative stress. (Trial Registration: The clinical trial protocol number is NCT05296707). WHAT IS KNOWN • It is known that adjunctive therapies given in addition to pharmacological treatment contribute to improving symptom control and quality of life in individuals with asthma. WHAT IS NEW • There are no studies about the effect of respiratory physiotherapy on biomarkers in asthmatic children. The sub-mechanism of improvement in individuals has not been elucidated. • In this context, inspiratory muscle training has a positive effect on inflammation and oxidative stress levels in children with asthma and IMT should be used as an alternative treatment for childhood asthma.
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Affiliation(s)
- Ozden Gokcek
- Department of Physiotherapy and Rehabilitation, Health Science Faculty, Ege University, İzmir, Turkey.
| | - Ufuk Yurdalan
- Department of Physiotherapy and Rehabilitation, Health Science Faculty, Medipol University, Istanbul, Turkey
| | - Baki Umut Tugay
- Department of Physiotherapy and Rehabilitation, Health Science Faculty, Mugla Sıtkı Kocman University, Istanbul, Turkey
| | - Cigdem El
- Department of Child Health and Diseases, Tayfur Ata Sökmen Medicine Faculty, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Serdar Dogan
- Department of Biochemistry, Tayfur Ata Sökmen Medicine Faculty, Hatay Mustafa Kemal University, Hatay, Turkey
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Henrot P, Dupin I, Schilfarth P, Esteves P, Blervaque L, Zysman M, Gouzi F, Hayot M, Pomiès P, Berger P. Main Pathogenic Mechanisms and Recent Advances in COPD Peripheral Skeletal Muscle Wasting. Int J Mol Sci 2023; 24:ijms24076454. [PMID: 37047427 PMCID: PMC10095391 DOI: 10.3390/ijms24076454] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/14/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a worldwide prevalent respiratory disease mainly caused by tobacco smoke exposure. COPD is now considered as a systemic disease with several comorbidities. Among them, skeletal muscle dysfunction affects around 20% of COPD patients and is associated with higher morbidity and mortality. Although the histological alterations are well characterized, including myofiber atrophy, a decreased proportion of slow-twitch myofibers, and a decreased capillarization and oxidative phosphorylation capacity, the molecular basis for muscle atrophy is complex and remains partly unknown. Major difficulties lie in patient heterogeneity, accessing patients' samples, and complex multifactorial process including extrinsic mechanisms, such as tobacco smoke or disuse, and intrinsic mechanisms, such as oxidative stress, hypoxia, or systemic inflammation. Muscle wasting is also a highly dynamic process whose investigation is hampered by the differential protein regulation according to the stage of atrophy. In this review, we report and discuss recent data regarding the molecular alterations in COPD leading to impaired muscle mass, including inflammation, hypoxia and hypercapnia, mitochondrial dysfunction, diverse metabolic changes such as oxidative and nitrosative stress and genetic and epigenetic modifications, all leading to an impaired anabolic/catabolic balance in the myocyte. We recapitulate data concerning skeletal muscle dysfunction obtained in the different rodent models of COPD. Finally, we propose several pathways that should be investigated in COPD skeletal muscle dysfunction in the future.
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Affiliation(s)
- Pauline Henrot
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
- CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, CIC 1401, Service de Pneumologie, F-33604 Pessac, France
| | - Isabelle Dupin
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
| | - Pierre Schilfarth
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
- CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, CIC 1401, Service de Pneumologie, F-33604 Pessac, France
| | - Pauline Esteves
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
| | - Léo Blervaque
- PhyMedExp, INSERM-CNRS-Montpellier University, F-34090 Montpellier, France
| | - Maéva Zysman
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
- CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, CIC 1401, Service de Pneumologie, F-33604 Pessac, France
| | - Fares Gouzi
- PhyMedExp, INSERM-CNRS-Montpellier University, CHRU Montpellier, F-34090 Montpellier, France
| | - Maurice Hayot
- PhyMedExp, INSERM-CNRS-Montpellier University, CHRU Montpellier, F-34090 Montpellier, France
| | - Pascal Pomiès
- PhyMedExp, INSERM-CNRS-Montpellier University, F-34090 Montpellier, France
| | - Patrick Berger
- Centre de Recherche Cardio-Thoracique de Bordeaux, Univ. Bordeaux, U1045, F-33604 Pessac, France
- INSERM, Centre de Recherche Cardio-Thoracique de Bordeaux, U1045, CIC 1401, F-33604 Pessac, France
- CHU de Bordeaux, Service d'Exploration Fonctionnelle Respiratoire, CIC 1401, Service de Pneumologie, F-33604 Pessac, France
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Nitrosative and Oxidative Stress, Reduced Antioxidant Capacity, and Fiber Type Switch in Iron-Deficient COPD Patients: Analysis of Muscle and Systemic Compartments. Nutrients 2023; 15:nu15061454. [PMID: 36986182 PMCID: PMC10053245 DOI: 10.3390/nu15061454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/07/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023] Open
Abstract
We hypothesized that a rise in the levels of oxidative/nitrosative stress markers and a decline in antioxidants might take place in systemic and muscle compartments of chronic obstructive pulmonary disease (COPD) patients with non-anemic iron deficiency. In COPD patients with/without iron depletion (n = 20/group), markers of oxidative/nitrosative stress and antioxidants were determined in blood and vastus lateralis (biopsies, muscle fiber phenotype). Iron metabolism, exercise, and limb muscle strength were assessed in all patients. In iron-deficient COPD compared to non-iron deficient patients, oxidative (lipofuscin) and nitrosative stress levels were greater in muscle and blood compartments and proportions of fast-twitch fibers, whereas levels of mitochondrial superoxide dismutase (SOD) and Trolox equivalent antioxidant capacity (TEAC) decreased. In severe COPD, nitrosative stress and reduced antioxidant capacity were demonstrated in vastus lateralis and systemic compartments of iron-deficient patients. The slow- to fast-twitch muscle fiber switch towards a less resistant phenotype was significantly more prominent in muscles of these patients. Iron deficiency is associated with a specific pattern of nitrosative and oxidative stress and reduced antioxidant capacity in severe COPD irrespective of quadriceps muscle function. In clinical settings, parameters of iron metabolism and content should be routinely quantify given its implications in redox balance and exercise tolerance.
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8
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Henrot P, Blervaque L, Dupin I, Zysman M, Esteves P, Gouzi F, Hayot M, Pomiès P, Berger P. Cellular interplay in skeletal muscle regeneration and wasting: insights from animal models. J Cachexia Sarcopenia Muscle 2023; 14:745-757. [PMID: 36811134 PMCID: PMC10067506 DOI: 10.1002/jcsm.13103] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 08/24/2022] [Accepted: 09/02/2022] [Indexed: 02/24/2023] Open
Abstract
Skeletal muscle wasting, whether related to physiological ageing, muscle disuse or to an underlying chronic disease, is a key determinant to quality of life and mortality. However, cellular basis responsible for increased catabolism in myocytes often remains unclear. Although myocytes represent the vast majority of skeletal muscle cellular population, they are surrounded by numerous cells with various functions. Animal models, mostly rodents, can help to decipher the mechanisms behind this highly dynamic process, by allowing access to every muscle as well as time-course studies. Satellite cells (SCs) play a crucial role in muscle regeneration, within a niche also composed of fibroblasts and vascular and immune cells. Their proliferation and differentiation is altered in several models of muscle wasting such as cancer, chronic kidney disease or chronic obstructive pulmonary disease (COPD). Fibro-adipogenic progenitor cells are also responsible for functional muscle growth and repair and are associated in disease to muscle fibrosis such as in chronic kidney disease. Other cells have recently proven to have direct myogenic potential, such as pericytes. Outside their role in angiogenesis, endothelial cells and pericytes also participate to healthy muscle homoeostasis by promoting SC pool maintenance (so-called myogenesis-angiogenesis coupling). Their role in chronic diseases muscle wasting has been less studied. Immune cells are pivotal for muscle repair after injury: Macrophages undergo a transition from the M1 to the M2 state along with the transition between the inflammatory and resolutive phase of muscle repair. T regulatory lymphocytes promote and regulate this transition and are also able to activate SC proliferation and differentiation. Neural cells such as terminal Schwann cells, motor neurons and kranocytes are notably implicated in age-related sarcopenia. Last, newly identified cells in skeletal muscle, such as telocytes or interstitial tenocytes could play a role in tissular homoeostasis. We also put a special focus on cellular alterations occurring in COPD, a chronic and highly prevalent respiratory disease mainly linked to tobacco smoke exposure, where muscle wasting is strongly associated with increased mortality, and discuss the pros and cons of animal models versus human studies in this context. Finally, we discuss resident cells metabolism and present future promising leads for research, including the use of muscle organoids.
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Affiliation(s)
- Pauline Henrot
- Centre de Recherche Cardio-thoracique de Bordeaux, Univ-Bordeaux, Pessac, France.,Centre de Recherche Cardio-thoracique de Bordeaux, INSERM, Pessac, France.,CHU de Bordeaux, Service d'exploration fonctionnelle respiratoire, Pessac, France
| | - Léo Blervaque
- PhyMedExp, INSERM-CNRS-Montpellier University, Montpellier, France
| | - Isabelle Dupin
- Centre de Recherche Cardio-thoracique de Bordeaux, Univ-Bordeaux, Pessac, France.,Centre de Recherche Cardio-thoracique de Bordeaux, INSERM, Pessac, France
| | - Maéva Zysman
- Centre de Recherche Cardio-thoracique de Bordeaux, Univ-Bordeaux, Pessac, France.,Centre de Recherche Cardio-thoracique de Bordeaux, INSERM, Pessac, France.,CHU de Bordeaux, Service d'exploration fonctionnelle respiratoire, Pessac, France
| | - Pauline Esteves
- Centre de Recherche Cardio-thoracique de Bordeaux, Univ-Bordeaux, Pessac, France.,Centre de Recherche Cardio-thoracique de Bordeaux, INSERM, Pessac, France
| | - Fares Gouzi
- PhyMedExp, INSERM-CNRS-Montpellier University, CHRU Montpellier, Montpellier, France
| | - Maurice Hayot
- PhyMedExp, INSERM-CNRS-Montpellier University, CHRU Montpellier, Montpellier, France
| | - Pascal Pomiès
- PhyMedExp, INSERM-CNRS-Montpellier University, Montpellier, France
| | - Patrick Berger
- Centre de Recherche Cardio-thoracique de Bordeaux, Univ-Bordeaux, Pessac, France.,Centre de Recherche Cardio-thoracique de Bordeaux, INSERM, Pessac, France.,CHU de Bordeaux, Service d'exploration fonctionnelle respiratoire, Pessac, France
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9
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Yentes JM, Liu WY, Zhang K, Markvicka E, Rennard SI. Updated Perspectives on the Role of Biomechanics in COPD: Considerations for the Clinician. Int J Chron Obstruct Pulmon Dis 2022; 17:2653-2675. [PMID: 36274993 PMCID: PMC9585958 DOI: 10.2147/copd.s339195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 09/24/2022] [Indexed: 11/05/2022] Open
Abstract
Patients with chronic obstructive pulmonary disease (COPD) demonstrate extra-pulmonary functional decline such as an increased prevalence of falls. Biomechanics offers insight into functional decline by examining mechanics of abnormal movement patterns. This review discusses biomechanics of functional outcomes, muscle mechanics, and breathing mechanics in patients with COPD as well as future directions and clinical perspectives. Patients with COPD demonstrate changes in their postural sway during quiet standing compared to controls, and these deficits are exacerbated when sensory information (eg, eyes closed) is manipulated. If standing balance is disrupted with a perturbation, patients with COPD are slower to return to baseline and their muscle activity is differential from controls. When walking, patients with COPD appear to adopt a gait pattern that may increase stability (eg, shorter and wider steps, decreased gait speed) in addition to altered gait variability. Biomechanical muscle mechanics (ie, tension, extensibility, elasticity, and irritability) alterations with COPD are not well documented, with relatively few articles investigating these properties. On the other hand, dyssynchronous motion of the abdomen and rib cage while breathing is well documented in patients with COPD. Newer biomechanical technologies have allowed for estimation of regional, compartmental, lung volumes during activity such as exercise, as well as respiratory muscle activation during breathing. Future directions of biomechanical analyses in COPD are trending toward wearable sensors, big data, and cloud computing. Each of these offers unique opportunities as well as challenges. Advanced analytics of sensor data can offer insight into the health of a system by quantifying complexity or fluctuations in patterns of movement, as healthy systems demonstrate flexibility and are thus adaptable to changing conditions. Biomechanics may offer clinical utility in prediction of 30-day readmissions, identifying disease severity, and patient monitoring. Biomechanics is complementary to other assessments, capturing what patients do, as well as their capability.
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Affiliation(s)
- Jennifer M Yentes
- Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, USA
| | - Wai-Yan Liu
- Department of Orthopaedic Surgery & Trauma, Máxima MC, Eindhoven, the Netherlands
- Department of Orthopaedic Surgery & Trauma, Catharina Hospital, Eindhoven, the Netherlands
| | - Kuan Zhang
- Department of Electrical & Computer Engineering, University of Nebraska at Lincoln, Lincoln, NE, USA
| | - Eric Markvicka
- Department of Electrical & Computer Engineering, University of Nebraska at Lincoln, Lincoln, NE, USA
- Department of Mechanical & Materials Engineering, University of Nebraska at Lincoln, Lincoln, NE, USA
| | - Stephen I Rennard
- Department of Internal Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Nebraska Medical Center, Omaha, NE, USA
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10
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Casadevall C, Sancho-Muñoz A, Vicente I, Pascual-Guardia S, Admetlló M, Gea J. Influence of COPD systemic environment on the myogenic function of muscle precursor cells in vitro. Respir Res 2022; 23:282. [PMID: 36242002 PMCID: PMC9569059 DOI: 10.1186/s12931-022-02203-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 09/23/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Loss of muscle mass and function are well-recognized systemic manifestations of chronic obstructive pulmonary disease (COPD). Acute exacerbations, in turn, significantly contribute to upgrade these systemic comorbidities. Involvement of myogenic precursors in muscle mass maintenance and recovery is poorly understood. The aim of the present study was to investigate the effects of the vascular systemic environment from stable and exacerbated COPD patients on the myogenic behavior of human muscle precursor cells (MPC) in vitro. Methods: Serum from healthy controls and from stable and exacerbated COPD patients (before and after Methylprednisolone treatment) was used to stimulate human MPC cultures. Proliferation analysis was assessed through BrdU incorporation assays. MPC differentiation was examined through real-time RT-PCR, western blot and immunofluorescence analysis. Results: Stimulation of MPCs with serum obtained from stable COPD patients did not affect myogenic precursor cell function. The vascular systemic environment during an acute exacerbation exerted a mitotic effect on MPCs without altering myogenic differentiation outcome. After Methylprednisolone treatment of acute exacerbated COPD patients, however, the mitotic effect was further amplified, but it was followed by a deficient differentiation capacity. Moreover, these effects were prevented when cells were co-treated with the glucocorticoid receptor antagonist Mifepristone. Conclusion: Our findings suggest that MPC capacity is inherently preserved in COPD patients, but is compromised after systemic administration of MP. This finding strengthens the concept that glucocorticoid treatment over the long term can negatively impact myogenic stem cell fate decisions and interfere with muscle mass recovery. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-02203-6.
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Affiliation(s)
- Carme Casadevall
- Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), C/ Dr. Aigüader 88, 08003, Barcelona, Spain. .,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 08003, Barcelona, Spain. .,Department of Medicine and Life Sciences (MELIS), Universitat Pompeu Fabra (UPF), 08003, Barcelona, Spain.
| | - Antonio Sancho-Muñoz
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 08003, Barcelona, Spain.,Pulmonology Department, Hospital del Mar-IMIM, 08003, Barcelona, Spain
| | - Ignacio Vicente
- Hospital de l'Esperança, Av. Santuario, Ptge. de Sant Josep la Muntanya 12, 08024, Barcelona, Spain
| | - Sergi Pascual-Guardia
- Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), C/ Dr. Aigüader 88, 08003, Barcelona, Spain.,Department of Medicine and Life Sciences (MELIS), Universitat Pompeu Fabra (UPF), 08003, Barcelona, Spain.,Pulmonology Department, Hospital del Mar-IMIM, 08003, Barcelona, Spain
| | - Mireia Admetlló
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 08003, Barcelona, Spain.,Department of Medicine and Life Sciences (MELIS), Universitat Pompeu Fabra (UPF), 08003, Barcelona, Spain.,Pulmonology Department, Hospital del Mar-IMIM, 08003, Barcelona, Spain
| | - Joaquim Gea
- Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), C/ Dr. Aigüader 88, 08003, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), 08003, Barcelona, Spain.,Department of Medicine and Life Sciences (MELIS), Universitat Pompeu Fabra (UPF), 08003, Barcelona, Spain.,Pulmonology Department, Hospital del Mar-IMIM, 08003, Barcelona, Spain
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11
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Martín-Ontiyuelo C, Rodó-Pin A, Echeverría-Esnal D, Admetlló M, Duran-Jordà X, Alvarado M, Gea J, Barreiro E, Rodríguez-Chiaradía DA. Intravenous Iron Replacement Improves Exercise Tolerance in COPD: A Single-Blind Randomized Trial. Arch Bronconeumol 2022; 58:689-698. [PMID: 35312562 DOI: 10.1016/j.arbres.2021.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 07/25/2021] [Accepted: 08/08/2021] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Iron deficiency affects exercise capacity because of the critical role iron plays in the optimal functioning of skeletal muscle metabolism. We hypothesized that intravenous iron may improve exercise tolerance, quality of life (QoL), and daily physical activity (DPA) in patients with chronic obstructive pulmonary disease (COPD). METHODS This was a placebo-controlled, single-blind, parallel-group, randomized clinical trial. Iron deficiency was defined as a ferritin level<100ng/mL or a ferritin level between 100 and 299ng/mL with a transferrin saturation<20%, with or without mild anaemia. Patients were randomized at a 2:1 ratio to receive intravenous ferric carboxymaltose or placebo. The primary objective was to investigate whether intravenous iron replacement improved endurance time from baseline by at least 33%. The secondary objectives were to evaluate impact on QoL using the COPD Assessment Test (CAT) and on DPA by accelerometry. RESULTS We included 66 patients, 44 (66.7%) in the intervention group and 22 (33.3%) in the placebo group. Among patients receiving ferric carboxymaltose, 23 (52.3%) achieved the primary endpoint compared to 4 (18.2%) in the placebo group [p=0.009; relative risk 3.12, (95% CI, 1.19-8.12)]. CAT score decreased -3 (-6.0-1.3) points from baseline in the intervention group (p=0.007), in contrast to placebo group [-1 (-4.0-2.3) points, p=0.236] with no differences in DPA and adverse events in both groups. CONCLUSIONS Iron replacement improved exercise capacity and QoL in stable COPD patients with iron deficiency. The treatment was well tolerated. CLINICAL TRIAL REGISTRATION EudraCT 2016-001238-89.
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Affiliation(s)
- Clara Martín-Ontiyuelo
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, Hospital del Mar-IMIM (Parc de Salut Mar), Health and Experimental Sciences Department (DCEXS), Universitat Pompeu Fabra (UPF), Barcelona Biomedical Research Park (PRBB), Barcelona, Spain; Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos-III (ISCIII), Barcelona, Spain
| | - Anna Rodó-Pin
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, Hospital del Mar-IMIM (Parc de Salut Mar), Health and Experimental Sciences Department (DCEXS), Universitat Pompeu Fabra (UPF), Barcelona Biomedical Research Park (PRBB), Barcelona, Spain
| | - Daniel Echeverría-Esnal
- Pharmacy Department, Hospital del Mar (Parc de Salut Mar), Barcelona, Spain; Infectious Pathology and Antimicrobials Research Group (IPAR), Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Mireia Admetlló
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, Hospital del Mar-IMIM (Parc de Salut Mar), Health and Experimental Sciences Department (DCEXS), Universitat Pompeu Fabra (UPF), Barcelona Biomedical Research Park (PRBB), Barcelona, Spain
| | - Xavier Duran-Jordà
- Methodology & Biostatistics Support Unit, Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Barcelona, Spain
| | - Mariela Alvarado
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, Hospital del Mar-IMIM (Parc de Salut Mar), Health and Experimental Sciences Department (DCEXS), Universitat Pompeu Fabra (UPF), Barcelona Biomedical Research Park (PRBB), Barcelona, Spain
| | - Joaquim Gea
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, Hospital del Mar-IMIM (Parc de Salut Mar), Health and Experimental Sciences Department (DCEXS), Universitat Pompeu Fabra (UPF), Barcelona Biomedical Research Park (PRBB), Barcelona, Spain; Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos-III (ISCIII), Barcelona, Spain
| | - Esther Barreiro
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, Hospital del Mar-IMIM (Parc de Salut Mar), Health and Experimental Sciences Department (DCEXS), Universitat Pompeu Fabra (UPF), Barcelona Biomedical Research Park (PRBB), Barcelona, Spain; Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos-III (ISCIII), Barcelona, Spain
| | - Diego A Rodríguez-Chiaradía
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, Hospital del Mar-IMIM (Parc de Salut Mar), Health and Experimental Sciences Department (DCEXS), Universitat Pompeu Fabra (UPF), Barcelona Biomedical Research Park (PRBB), Barcelona, Spain; Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos-III (ISCIII), Barcelona, Spain.
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12
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Resistance training prevents damage to the mitochondrial function of the skeletal muscle of rats exposed to secondary cigarette smoke. Life Sci 2022; 309:121017. [PMID: 36183779 DOI: 10.1016/j.lfs.2022.121017] [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: 08/01/2022] [Revised: 09/17/2022] [Accepted: 09/26/2022] [Indexed: 11/30/2022]
Abstract
AIM To analyze the consumption of oxygen and to quantify the mitochondrial respiratory chain proteins (OXPHOS) in the gastrocnemius muscle of rats exposed to cigarette smoke and/or RT practitioners. MAIN METHODS Wistar rats were divided into groups: Control (C), Smoker (S), Exercise (E) and Exercise Smoker (ES). Groups F and ES were exposed to the smoke of 4 cigarettes for 30 min, 2× a day, 5× a week, for 16 weeks. Groups E and ES performed four climbs with progressive load, 1× per day, 5× per week, for 16 weeks. The gastrocnemius muscle was collected for analysis of OXPHOS content and oxygen consumption. Groups S (vs. C) and ES (vs. C and E) showed lower body weight gain when observing the evolution curve. KEY FINDINGS The S rats showed a reduction in the NDUFB8 proteins of complex 1, SDHB of complex 2, MTC01 of complex 4 and ATP5A of complex 5 (ATP Synthase) compared to Group C. Additionally, S rats also showed increased consumption of O2 in Basal, Leak, Complex I and I/II combined measures compared to the other groups, suggesting that the activity of the mitochondria of these animals increased in terms of coupling and uncoupling parameters. SIGNIFICANCE Our data suggest that exposure to cigarette smoke for 16 weeks is capable of causing impairment of mitochondrial function with reduced expression of respiratory chain proteins in skeletal muscle. However, the RT was effective in preventing impairment of mitochondrial function in the skeletal muscle of rats exposed to secondary cigarette smoke.
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13
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Zhou Y, Liu X, Wu W. Mapping the global research landscape and hotspot of exercise therapy and chronic obstructive pulmonary disease: A bibliometric study based on the web of science database from 2011 to 2020. Front Physiol 2022; 13:947637. [PMID: 36035492 PMCID: PMC9403760 DOI: 10.3389/fphys.2022.947637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Background: The application of exercise therapy (ET) in chronic obstructive pulmonary disease (COPD) is generating increasing clinical efficacy and social-economic value. In this study, research trends, evolutionary processes and hot topics in this field are detailed, as well as predictions of future development directions.Methods: Search for literature in the field of COPD and ET and analyze data to generate knowledge graphs using VOSiewer and CiteSpace software. The time frame for the search was from 2011 to January 2021. Then we extracted full-text key information (such as title, journal category, publication date, author, country and institution, abstract, and keyword) and obtained the co-citation analysis. Use hierarchal clustering analysis software developed by VOSviewer to map common citations, and use Citespace software to plot trend networks.Results: The United States topped the list with 27.91% of the number of articles posted, followed by the UK at 25.44%. Imperial College London was the highest number of article publications in institutions, followed by Maastricht University and the University of Toronto. The Royal Brompton Harefield NHS Foundation Trust was one of many research institutions and currently holds the highest average citations per item (ACI) value, followed by Imperial College London and the University of Leuven. Judging from the number of publications related to ET and COPD, it is mainly published in cell biology, respiratory pulmonary diseases, and rehabilitation experiments study medicine. The European Respiration Journal is the most widely published in this field, followed by the International Journal of Chronic Obstructive Pulmonary Disease and Respiratory Medicine.Conclusion: COPD combined with ET is widely used in clinical practice and is on the rise. A distinctive feature of the field is multidisciplinary integration. Rehabilitation research for COPD involves multidisciplinary collaboration, tissue engineering, and molecular biology mechanism studies to help patients remodel healthy breathing. Multidisciplinary rehabilitation measures provide a solid foundation for advancing clinical efficacy in the field of COPD.
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Affiliation(s)
- Yu Zhou
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai, China
| | - Xiaodan Liu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- *Correspondence: Xiaodan Liu, ; Weibing Wu,
| | - Weibing Wu
- Department of Sports Rehabilitation, Shanghai University of Sport, Shanghai, China
- *Correspondence: Xiaodan Liu, ; Weibing Wu,
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14
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Lopez-Campos JL, Almagro P, Gómez JT, Chiner E, Palacios L, Hernández C, Navarro MD, Molina J, Rigau D, Soler-Cataluña JJ, Calle M, Cosío BG, Casanova C, Miravitlles M. Spanish COPD Guideline (GesEPOC) Update: Comorbidities, Self-Management and Palliative Care. Arch Bronconeumol 2022; 58:334-344. [PMID: 35315327 DOI: 10.1016/j.arbres.2021.08.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/09/2021] [Accepted: 08/09/2021] [Indexed: 12/20/2022]
Abstract
The current health care models described in GesEPOC indicate the best way to make a correct diagnosis, the categorization of patients, the appropriate selection of the therapeutic strategy and the management and prevention of exacerbations. In addition, COPD involves several aspects that are crucial in an integrated approach to the health care of these patients. The evaluation of comorbidities in COPD patients represents a healthcare challenge. As part of a comprehensive assessment, the presence of comorbidities related to the clinical presentation, to some diagnostic technique or to some COPD-related treatments should be studied. Likewise, interventions on healthy lifestyle habits, adherence to complex treatments, developing skills to recognize the signs and symptoms of exacerbation, knowing what to do to prevent them and treat them within the framework of a self-management plan are also necessary. Finally, palliative care is one of the pillars in the comprehensive treatment of the COPD patient, seeking to prevent or treat the symptoms of a disease, the side effects of treatment, and the physical, psychological and social problems of patients and their caregivers. Therefore, the main objective of this palliative care is not to prolong life expectancy, but to improve its quality. This chapter of GesEPOC 2021 presents an update on the most important comorbidities, self-management strategies, and palliative care in COPD, and includes a recommendation on the use of opioids for the treatment of refractory dyspnea in COPD.
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Affiliation(s)
- José Luis Lopez-Campos
- Unidad Médico-Quirúrgica de Enfermedades Respiratorias, Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío, Universidad de Sevilla, Sevilla, España; Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España.
| | - Pere Almagro
- Servicio de Medicina Interna, Hospital Universitario Mutua de Tarrasa, Tarrasa, Barcelona, España
| | | | - Eusebi Chiner
- Servicio de Neumología, Hospital Universitario San Juan de Alicante, Alicante, España
| | - Leopoldo Palacios
- Unidad de Gestión Clínica El Torrejón, Distrito Sanitario Huelva-Costa y Condado-Campiña, Huelva, España
| | - Carme Hernández
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España; Dispositivo transversal hospitalización a domicilio, Dirección Médica y Enfermera, Hospital Clínic, Universidad de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, España
| | | | - Jesús Molina
- Centro de Salud Francia, Dirección Asistencial Oeste, Fuenlabrada, Madrid, España
| | - David Rigau
- Centro Cochrane Iberoamericano, Barcelona, España
| | | | - Myriam Calle
- Servicio de Neumología, Hospital Clínico San Carlos, Departamento de Medicina, Facultad de Medicina, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, España
| | - Borja G Cosío
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España; Servicio de Neumología, Hospital Universitario Son Espases-IdISBa, Palma de Mallorca, Baleares, España
| | - Ciro Casanova
- Unidad de Investigación, Servicio de Neumología, Hospital Universitario de La Candelaria, Universidad de La Laguna, Santa Cruz de Tenerife, Tenerife, España
| | - Marc Miravitlles
- Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III, Madrid, España; Servicio de Neumología, Hospital Universitari Vall d'Hebron, Vall d'Hebron Institut de Recerca (VHIR), Barcelona, España
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15
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Lopez-Campos JL, Almagro P, Gómez JT, Chiner E, Palacios L, Hernández C, Navarro MD, Molina J, Rigau D, Soler-Cataluña JJ, Calle M, Cosío BG, Casanova C, Miravitlles M. [Translated article] Spanish COPD Guideline (GesEPOC) Update: Comorbidities, Self-Management and Palliative Care. ARCHIVOS DE BRONCONEUMOLOGÍA 2022. [DOI: 10.1016/j.arbres.2021.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Uzeloto JS, de Toledo-Arruda AC, Silva BSA, Braz AMM, de Lima FF, Grigoletto I, Ramos D, Golim MA, Ramos EMC. Effect of physical training on cytokine expression in CD4+ T lymphocytes in subjects with stable COPD. Ther Adv Respir Dis 2022; 16:17534666221091179. [PMID: 35695009 PMCID: PMC9189509 DOI: 10.1177/17534666221091179] [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] [Indexed: 11/21/2022] Open
Abstract
Introduction: Although evidence suggests that physical exercise reduces systemic inflammation, at the plasma level, there are still contradictions in chronic obstructive pulmonary disease (COPD). In this sense, analysis of intracellular cytokines could clear off the effect of physical exercise on the inflammatory profile of these subjects. Aim: The aim was to evaluate the effect of physical training on cytokine expression in CD4+ T lymphocytes from subjects with COPD. Methods: This is a randomized controlled trial. Subjects with stable COPD were grouped into two groups, exercise and control. In total, 23 subjects with stable COPD were evaluated, of which 15 underwent aerobic strength training [physical exercise group (PEG)] and 8 underwent breathing exercises [respiratory physiotherapy group (RPG)]. Intracellular cytokines [interleukin (IL)-8, IL-13, IL-17, IL-6, IL-2, IL-10, and tumor necrosis factor alpha (TNF-α)] from CD4+ T lymphocytes were analyzed from peripheral blood through flow cytometry, before and after 8 weeks of intervention. Results: The PEG and RPG groups had a mean age of 68 ± 5.96 and 72.25 ± 6.86 years and predicted forced expiratory volume in the first second (FEV1) of 58.6 ± 15.99% and 39.75 ± 10.39%, respectively. It was possible to detect a significant reduction in IL-8 (p = 0.0125) and an increase in IL-13 (p = 0.0014) and an increase in TNF-α (p < 0.001) in both groups. Conclusion: Eight weeks of physical training, both peripheral and respiratory, were able to reduce concentrations of IL-8 and to increase IL-13, and TNF-α in CD4+ T lymphocytes in subjects with stable COPD. The findings reinforce the benefits of interventions in subjects with COPD, revealing data not previously investigated.
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Affiliation(s)
- Juliana S Uzeloto
- Department of Physiotherapy, Postgraduate Program in Physiotherapy, Faculty of Science and Technology, São Paulo State University (UNESP), Rua Roberto Simonsen, 305, Presidente Prudente, São Paulo 19060-900, Brazil
| | - Alessandra C de Toledo-Arruda
- Department of Physiology and Pharmacology, Laboratory of Exercise Sciences, Fluminense Federal University, Rio de Janeiro, Brazil
| | - Bruna S A Silva
- Physiotherapy, Universidade Estadual Paulista Julio de Mesquita Filho, Presidente Prudente
| | - Aline M M Braz
- Universidade Estadual Paulista Julio de Mesquita Filho.,Instituto de Biociencias Campus de Botucatu, Medical Biotechnology, Botucatu
| | - Fabiano F de Lima
- Physiotherapy, Universidade Estadual Paulista Julio de Mesquita Filho, Presidente Prudente
| | - Isis Grigoletto
- Physiotherapy, Universidade Estadual Paulista Julio de Mesquita Filho, Presidente Prudente
| | - Dionei Ramos
- Physiotherapy, Universidade Estadual Paulista Julio de Mesquita Filho, Presidente Prudente
| | - Marjorie A Golim
- Botucatu Medical School, Postgraduate Program in Research & Development: Medical Biotechnology, Blood Center, Flow Cytometry Laboratory, São Paulo State University (UNESP), São Paulo, Brazil
| | - Ercy M C Ramos
- Physiotherapy, Universidade Estadual Paulista Julio de Mesquita Filho, Presidente Prudente
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Bernardes S, Silva FM, da Costa CC, de Souza RM, Teixeira PJZ. Reduced calf circumference is an independent predictor of worse quality of life, severity of disease, frequent exacerbation, and death in patients with chronic obstructive pulmonary disease admitted to a pulmonary rehabilitation program: A historic cohort study. JPEN J Parenter Enteral Nutr 2021; 46:546-555. [PMID: 34173982 DOI: 10.1002/jpen.2214] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Muscle wasting is associated with worse outcomes in chronic obstructive pulmonary disease (COPD) patients. We assessed the association of calf circumference (CC) measurements with clinical outcomes in COPD patients referred to an outpatient pulmonary rehabilitation program (PRP). METHODS In this single-center, retrospective study, we analyzed demographic and clinical data ( spirometry tests, comorbidities, COPD exacerbations, dyspnea scoring, exercise capacity, quality-of-life scores, BMI, CC measurements, and all-cause deaths [for 2 years]) from COPD patients PRP medical records. Patients were grouped according to CC into reduced CC (male, ≤34 cm; female, ≤33 cm) or adequate CC groups. RESULTS We evaluated 144 patients (aged 64.6 ± 8.5 years; mostly males; forced expiratory volume in 1 s, 40.3% ± 15.8%, predicted). Eighteen patients (12.5%) died during the 2 years of follow-up. Logistic regression showed that patients with reduced CC were more likely to present worse outcomes compared with COPD patients with adequate CC: more advanced disease severity (odds ratio [OR] = 5.09; 95% CI, 2.00-12.96), COPD frequent exacerbators (OR = 2.34; 95% CI, 1.11-4.91), worse total quality-of-life score (OR = 2.70, 95% CI, 1.22-6.00), and higher mortality (OR = 3.69; 95% CI, 1.06-12.87). CONCLUSION Reduced CC in COPD patients under initial assessment for PRP admission was associated with disease severity, frequent exacerbation, poor health status, and higher mortality in 2 years of follow-up. Considering its clinical applicability, CC measurement should be introduced in the nutrition assessment of COPD patients admitted to the PRP.
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Affiliation(s)
- Simone Bernardes
- Postgraduate Program in Health Sciences, Federal University of Health Science of Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | - Flávia Moraes Silva
- Nutrition Department and Nutrition Science, Federal University of Health Science of Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | | | | | - Paulo José Zimermann Teixeira
- Postgraduate Program in Health Sciences, Federal University of Health Science of Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.,Department of Clinical Medicine, Federal University of Health Science of Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil.,Hospital Pavilhão Pereira Filho, Santa Casa de Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
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18
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Li C, Deng Z, Zheng G, Xie T, Wei X, Huo Z, Bai J. Histone Deacetylase 2 Suppresses Skeletal Muscle Atrophy and Senescence via NF-κB Signaling Pathway in Cigarette Smoke-Induced Mice with Emphysema. Int J Chron Obstruct Pulmon Dis 2021; 16:1661-1675. [PMID: 34113097 PMCID: PMC8187003 DOI: 10.2147/copd.s314640] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/20/2021] [Indexed: 01/11/2023] Open
Abstract
Background Exposure to cigarette smoke (CS) is the main risk factor for chronic obstructive pulmonary disease (COPD). CS not only causes chronic airway inflammation and lung damage but also is involved in skeletal muscle dysfunction (SMD). Previous studies have shown that histone deacetylase 2 (HDAC2) plays an important role in the progression of COPD. The aim of this study was to determine the role of HDAC2 in CS-induced skeletal muscle atrophy and senescence. Methods Gastrocnemius muscle weight and cross-sectional area (CSA) were measured in mice with CS-induced emphysema, and changes in the expression of atrophy-related markers and senescence-related markers were detected. In addition, the relationship between HDAC2 expression and skeletal muscle atrophy and senescence was also investigated. Results Mice exposed to CS for 24 weeks developed emphysema and gastrocnemius atrophy and exhibited a decrease in gastrocnemius weight and skeletal muscle cross-sectional area. In addition, the HDAC2 protein levels were significantly decreased while the levels of atrophy-associated markers, including MURF1 and MAFbx, and senescence-associated markers, including P53 and P21, were significantly increased in the gastrocnemius muscle. In vitro, the exposure of C2C12 cells to cigarette smoke extract (CSE) significantly increased the MAFbx and MURF1 protein levels and decreased the HDAC2 protein levels. Moreover, overexpression of HDAC2 significantly ameliorated CSE-induced atrophy and senescence and reversed the increased MURF1, MAFbx, P53, and P21 expression in C2C12 cells. In addition, CSE treatment significantly increased the IKK and NF-κB p65 protein levels, and PTDC (an NF-kB inhibitor) ameliorated atrophy and senescence. Conclusion Our findings suggest that HDAC2 plays an important role in CS-induced skeletal muscle atrophy and senescence, possibly through the NF-κB pathway.
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Affiliation(s)
- Chao Li
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Zhaohui Deng
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Guixian Zheng
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Ting Xie
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Xinyan Wei
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Zengyu Huo
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
| | - Jing Bai
- Department of Respiratory Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, 530021, People's Republic of China
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Mao J, Li Y, Feng S, Liu X, Tian Y, Bian Q, Li J, Hu Y, Zhang L, Ji H, Li S. Bufei Jianpi Formula Improves Mitochondrial Function and Suppresses Mitophagy in Skeletal Muscle via the Adenosine Monophosphate-Activated Protein Kinase Pathway in Chronic Obstructive Pulmonary Disease. Front Pharmacol 2021; 11:587176. [PMID: 33390958 PMCID: PMC7773703 DOI: 10.3389/fphar.2020.587176] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 11/24/2020] [Indexed: 12/18/2022] Open
Abstract
Skeletal muscle dysfunction, a striking systemic comorbidity of chronic obstructive pulmonary disease (COPD), is associated with declines in activities of daily living, reductions in health status and prognosis, and increases in mortality. Bufei Jianpi formula (BJF), a traditional Chinese herbal formulation, has been shown to improve skeletal muscle tension and tolerance via inhibition of cellular apoptosis in COPD rat models. This study aimed to investigate the mechanisms by which BJF regulates the adenosine monophosphate-activated protein kinase (AMPK) pathway to improve mitochondrial function and to suppress mitophagy in skeletal muscle cells. Our study showed that BJF repaired lung function and ameliorated pathological impairment in rat lung and skeletal muscle tissues. BJF also improved mitochondrial function and reduced mitophagy via the AMPK signaling pathway in rat skeletal muscle tissue. In vitro, BJF significantly improved cigarette smoke extract-induced mitochondrial functional impairment in L6 skeletal muscle cells through effects on mitochondrial membrane potential, mitochondrial permeability transition pores, adenosine triphosphate production, and mitochondrial respiration. In addition, BJF led to upregulated expression of mitochondrial biogenesis markers, including AMPK-α, PGC-1α, and TFAM and downregulation of mitophagy markers, including LC3B, ULK1, PINK1, and Parkin, with increased expression of downstream markers of the AMPK pathway, including mTOR, PPARγ, and SIRT1. In conclusion, BJF significantly improved skeletal muscle and mitochondrial function in COPD rats and L6 cells by promoting mitochondrial biogenesis and suppressing mitophagy via the AMPK pathway. This study suggests that BJF may have therapeutic potential for prophylaxis and treatment of skeletal muscle dysfunction in patients with COPD.
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Affiliation(s)
- Jing Mao
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China.,Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China
| | - Ya Li
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Institute for Respiratory Diseases, The First Affiliated Hospital, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Suxiang Feng
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, China.,Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Xuefang Liu
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Yange Tian
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Qingqing Bian
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Institute for Respiratory Diseases, The First Affiliated Hospital, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Junzi Li
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Yuanyuan Hu
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Lanxi Zhang
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Huige Ji
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
| | - Suyun Li
- Henan Key Laboratory of Chinese Medicine for Respiratory Disease, Henan University of Chinese Medicine, Zhengzhou, China.,Institute for Respiratory Diseases, The First Affiliated Hospital, Henan University of Chinese Medicine, Zhengzhou, China.,Co-Construction Collaborative Innovation Center for Chinese Medicine and Respiratory Disease by Henan and Education Ministry of P.R. China, Henan University of Chinese Medicine, Zhengzhou, China
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20
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Jaitovich A. Hypercapnic Respiratory Failure-Driven Skeletal Muscle Dysfunction: It Is Time for Animal Model-Based Mechanistic Research. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1303:129-138. [PMID: 33788191 DOI: 10.1007/978-3-030-63046-1_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Dysfunction of locomotor muscles is frequent in chronic pulmonary diseases and strongly associated with worse outcomes including higher mortality. Although these associations have been corroborated over the last decades, there is poor mechanistic understanding of the process, in part due to the lack of adequate animal models to investigate this process. Most of the mechanistic research has so far been accomplished using relevant individual stimuli such as low oxygen or high CO2 delivered to otherwise healthy animals as surrogates of the phenomena occurring in the clinical setting. This review advocates for the development of a syndromic model in which skeletal muscle dysfunction is investigated as a comorbidity of a well-validated pulmonary disease model, which could potentially allow discovering meaningful mechanisms and pathways and lead to more substantial progress to treat this devastating condition.
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Affiliation(s)
- Ariel Jaitovich
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY, USA. .,Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA.
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21
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Wendpap CDR, Santos TDD, Lüdke E, Pasqualoto AS, Silveira AFD, Albuquerque IMD. Health status can predict diaphragmatic muscle thickness in COPD: pilot study. FISIOTERAPIA EM MOVIMENTO 2021. [DOI: 10.1590/fm.2021.34124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Abstract Introduction: Among the systemic implications of chronic obstructive pulmonary disease (COPD) there are changes in the diaphragm and impact on health status. However, there are few studies on the possible relationship between these variables, and whether health status could predict diaphragmatic muscle thickness (DMT). Objective: To investigate whether there is a relationship between DMT and the prognostic mortality index Body Mass-Index, Airway Obstruction, Dyspnea and Exercise Capacity (BODE), dyspnea and health status, and to investigate whether health status can predict DMT in patients with COPD entering a pulmonary rehabilitation program. Methods: This is a pilot study with a cross-sectional design. Diaphragmatic muscle thickness was evaluated using ultrasound; health status through the COPD Assessment Test (CAT); the sensation of dyspnea by the modified Medical Research Council scale; and mortality, using the BODE index. Results: The sample consisted of 13 patients (68.69 ± 9.3 years) classified as having moderate to severe COPD. There was a strong and inverse correlation between diaphragmatic muscle thickness and health status (r = -0.735; p = 0.004). Simple regression analysis demonstrated that health status influenced diaphragmatic muscle thickness (β = -0.002; IC 95% - 0.004 to -0.001; p = 0.004), explaining 49% of the variance. However, no correlations were observed between diaphragmatic muscle thickness with dyspnea (r = 0.005; p = 0.985) or with the BODE mortality index (r = -0.219; p = 0.472). Conclusion: This pilot study demonstrated a strong inverse correlation between health status and DMT. In addition, health status was able to predict DMT in patients with COPD.
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22
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Chan SMH, Cerni C, Passey S, Seow HJ, Bernardo I, van der Poel C, Dobric A, Brassington K, Selemidis S, Bozinovski S, Vlahos R. Cigarette Smoking Exacerbates Skeletal Muscle Injury without Compromising Its Regenerative Capacity. Am J Respir Cell Mol Biol 2020; 62:217-230. [PMID: 31461300 DOI: 10.1165/rcmb.2019-0106oc] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Skeletal muscle dysfunction in patients with chronic obstructive pulmonary disease negatively impacts quality of life and survival. Cigarette smoking (CS) is the major risk factor for chronic obstructive pulmonary disease and skeletal muscle dysfunction; however, how CS affects skeletal muscle function remains enigmatic. To examine the impact of CS on skeletal muscle inflammation and regeneration, male BALB/c mice were exposed to CS for 8 weeks before muscle injury was induced by barium chloride injection, and were maintained on the CS protocol for up to 21 days after injury. Barium chloride injection resulted in architectural damage to the tibialis anterior muscle, resulting in a decrease contractile function, which was worsened by CS exposure. CS exposure caused muscle atrophy (reduction in gross weight and myofiber cross-sectional area) and altered fiber type composition (31% reduction of oxidative fibers). Both contractile function and loss in myofiber cross-sectional area by CS exposure gradually recovered over time. Satellite cells are muscle stem cells that confer skeletal muscle the plasticity to adapt to changing demands. CS exposure blunted Pax7+ centralized nuclei within satellite cells and thus prevented the activation of these muscle stem cells. Finally, CS triggered muscle inflammation; in particular, there was an exacerbated recruitment of F4/80+ monocytic cells to the site of injury along with enhanced proinflammatory cytokine expression. In conclusion, CS exposure amplified the local inflammatory response at the site of skeletal muscle injury, and this was associated with impaired satellite cell activation, leading to a worsened muscle injury and contractile function without detectable impacts on the recovery outcomes.
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Affiliation(s)
- Stanley M H Chan
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
| | - Claudia Cerni
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
| | - Samantha Passey
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
| | - Huei Jiunn Seow
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
| | - Ivan Bernardo
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
| | - Chris van der Poel
- Department of Physiology, Anatomy & Microbiology, La Trobe University, Bundoora, Victoria, Australia
| | - Aleksandar Dobric
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
| | - Kurt Brassington
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
| | - Stavros Selemidis
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
| | - Steven Bozinovski
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
| | - Ross Vlahos
- School of Health and Biomedical Sciences, RMIT University, Bundoora, Victoria, Australia; and
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23
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Presence or Absence of Skeletal Muscle Dysfunction in Chronic Obstructive Pulmonary Disease is Associated With Distinct Phenotypes. Arch Bronconeumol 2020; 57:264-272. [PMID: 32115277 DOI: 10.1016/j.arbres.2019.12.034] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 12/19/2019] [Accepted: 12/31/2019] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Reduced skeletal muscle function and cognitive performance are common extrapulmonary features in Chronic Obstructive Pulmonary Disease (COPD) but their connection remains unclear. Whether presence or absence of skeletal muscle dysfunction in COPD patients is linked to a specific phenotype consisting of reduced cognitive performance, comorbidities and nutritional and metabolic disturbances needs further investigation. METHODS Thirty-seven patients with COPD (grade II-IV) were divided into two phenotypic cohorts based on the presence (COPD dysfunctional, n=25) or absence (COPD functional, n=12) of muscle dysfunction. These cohorts were compared to 28 healthy, age matched controls. Muscle strength (dynamometry), cognitive performance (Trail Making Test and STROOP Test), body composition (Dual-energy X-Ray Absorptiometry), habitual physical activity, comorbidities and mood status (questionnaires) were measured. Pulse administration of stable amino acid tracers was performed to measure whole body production rates. RESULTS Presence of muscle dysfunction in COPD was independent of muscle mass or severity of airflow obstruction but associated with impaired STROOP Test performance (p=0.04), reduced resting O2 saturation (p=0.003) and physical inactivity (p=0.01), and specific amino acid metabolic disturbances (enhanced leucine (p=0.02) and arginine (p=0.06) production). In contrast, COPD patients with normal muscle function presented with anxiety, increased fat mass, plasma glucose concentration, and metabolic syndrome related comorbidities (hypertension and dyslipidemia). CONCLUSION COPD patients with muscle dysfunction show characteristics of a cognitive - metabolic impairment phenotype, influenced by the presence of hypoxia, whereas those with normal muscle function present a phenotype of metabolic syndrome and mood disturbances.
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24
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Balnis J, Korponay TC, Jaitovich A. AMP-Activated Protein Kinase (AMPK) at the Crossroads Between CO 2 Retention and Skeletal Muscle Dysfunction in Chronic Obstructive Pulmonary Disease (COPD). Int J Mol Sci 2020; 21:E955. [PMID: 32023946 PMCID: PMC7037951 DOI: 10.3390/ijms21030955] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/22/2020] [Accepted: 01/28/2020] [Indexed: 12/17/2022] Open
Abstract
Skeletal muscle dysfunction is a major comorbidity in chronic obstructive pulmonary disease (COPD) and other pulmonary conditions. Chronic CO2 retention, or hypercapnia, also occur in some of these patients. Both muscle dysfunction and hypercapnia associate with higher mortality in these populations. Over the last years, we have established a mechanistic link between hypercapnia and skeletal muscle dysfunction, which is regulated by AMPK and causes depressed anabolism via reduced ribosomal biogenesis and accelerated catabolism via proteasomal degradation. In this review, we discuss the main findings linking AMPK with hypercapnic pulmonary disease both in the lungs and skeletal muscles, and also outline potential avenues for future research in the area based on knowledge gaps and opportunities to expand mechanistic research with translational implications.
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Affiliation(s)
- Joseph Balnis
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY 12208, USA; (J.B.); (T.C.K.)
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| | - Tanner C. Korponay
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY 12208, USA; (J.B.); (T.C.K.)
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
| | - Ariel Jaitovich
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY 12208, USA; (J.B.); (T.C.K.)
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY 12208, USA
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25
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Fiorentino G, Esquinas AM, Annunziata A. Exercise and Chronic Obstructive Pulmonary Disease (COPD). ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1228:355-368. [PMID: 32342470 DOI: 10.1007/978-981-15-1792-1_24] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Systemic effects of COPD lead to cardiovascular co-morbidities, muscle wasting and osteoporosis that, in turn, lead to inactivity and physical deconditioning. This evolution has a direct influence on the health-related quality of life (HRQoL) of patients suffering from this respiratory disease. Pharmacological therapy leads to improvement in shortness of breath, but it has a limited effect on the physical deconditioning. Pulmonary rehabilitation relieves dyspnoea and fatigue, improves emotional function and enhances the sense of control that individuals have over their condition. These improvements are moderately substantial and clinically significant. Rehabilitation serves as an essential component of the management of COPD and is beneficial in improving health-related quality of life and exercise capacity.
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Affiliation(s)
- Giuseppe Fiorentino
- Division of Respiratory Physiopathology and Rehabilitation, A.O.R.N. "Dei Colli" - Monaldi Hospital, Naples, Italy
- , Salerno, Italy
| | - Antonio M Esquinas
- Intensive Care Unit, Hospital Morales Meseguer, Murcia, Spain
- Non Invasive Ventilatory Unit, Hospital Morales Meseguer, Murcia, Spain
| | - Anna Annunziata
- Division of Respiratory Physiopathology and Rehabilitation, A.O.R.N. "Dei Colli" - Monaldi Hospital, Naples, Italy
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26
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Bhanji RA, Montano-Loza AJ, Watt KD. Sarcopenia in Cirrhosis: Looking Beyond the Skeletal Muscle Loss to See the Systemic Disease. Hepatology 2019; 70:2193-2203. [PMID: 31034656 DOI: 10.1002/hep.30686] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 04/16/2019] [Indexed: 12/18/2022]
Abstract
Sarcopenia is a common complication of cirrhosis and is defined as a progressive and generalized loss of skeletal muscle mass, strength, and function. Sarcopenia is associated with poor prognosis and increased mortality. How sarcopenia and muscle wasting relate to such poor outcomes requires looking beyond the overt muscle loss and at this entity as a systemic disease that affects muscles of vital organs including cardiac and respiratory muscles. This review explores the pathophysiological pathways and mechanisms that culminate in poor outcomes associated with sarcopenia. This provides a launching pad to identify potential targets for therapeutic intervention and optimization to improve patient outcomes.
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Affiliation(s)
- Rahima A Bhanji
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN.,Division of Gastroenterology (Liver Unit), University of Alberta Hospital, Edmonton, AB, Canada
| | - Aldo J Montano-Loza
- Division of Gastroenterology (Liver Unit), University of Alberta Hospital, Edmonton, AB, Canada
| | - Kymberly D Watt
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN
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27
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Mansour KMK, Goulart CDL, Carvalho-Junior LCSD, Trimer R, Borghi-Silva A, Silva ALGD. Pulmonary function and functional capacity cut-off point to establish sarcopenia and dynapenia in patients with COPD. ACTA ACUST UNITED AC 2019; 45:e20180252. [PMID: 31644702 PMCID: PMC8653115 DOI: 10.1590/1806-3713/e20180252] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 02/26/2019] [Indexed: 12/02/2022]
Abstract
Objective To establish a cut-off point for clinical and functional variables to determinate sarcopenia and dynapenia in COPD patients, and to analyze the impact of skeletal muscle dysfunction (SMD) on these variables. Methods Cross-sectional study, screened COPD patients for sarcopenia or dynapenia through low muscle mass and hand grip strength (HGS). Clinical variables: pulmonary function, respiratory muscle strength and functional capacity (FC). The precision of the variables in determining points of predictive cut-off for sarcopenia or dynapenia were performed using the Receiver Operating Characteristic curve and two-way analysis of variance. Results 20 COPD patients stratified for sarcopenia (n = 11) and dynapenia (n = 07). Sarcopenia group presented lower lean mass and lower maximal inspiratory pressure (MIP), decreased HGS, reduced FC (p<0.050). Dynapenia group presented reduced MIP, lower HGS and walked a shorter distance at Incremental shuttle walk test (ISWT) (p<0.050). We found cut-off points of forced expiratory volume in one second (FEV1), MIP and maximal expiratory pressure (MEP) and ISWT. It is possible to identify sarcopenia or dynapenia in these patients. We found the coexistence of the conditions (SMD effect) in COPD – reduction in the distance in the ISWT (p = 0.002) and %ISWT (p = 0.017). Conclusion In moderate to very severe COPD patients the sarcopenia could be predicted by FEV1 (%predicted) < 52, MIP < 73 cmH2O, MEP < 126 cmH2O and distance traveled of < 295 m in ISWT. Whereas dynapenia could be predicted by FEV1 < 40%, MIP < 71 cmH2O, MEP < 110 cmH2O and distance of < 230 m traveled in ISWT.
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Affiliation(s)
| | - Cássia da Luz Goulart
- Laboratório de Fisioterapia Cardiopulmonar, Universidade Federal de São Carlos, São Carlos (SP) Brasil
| | | | - Renata Trimer
- Departamento de Educação Física e Saúde, Universidade de Santa Cruz do Sul, Santa Cruz do Sul (RS) Brasil
| | - Audrey Borghi-Silva
- Laboratório de Fisioterapia Cardiopulmonar, Universidade Federal de São Carlos, São Carlos (SP) Brasil
| | - Andréa Lúcia Gonçalves da Silva
- Departamento de Educação Física e Saúde, Universidade de Santa Cruz do Sul, Santa Cruz do Sul (RS) Brasil.,Programa de Reabilitação Cardiorrespiratória, Hospital Santa Cruz, Santa Cruz do Sul (RS) Brasil
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28
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Jaitovich A, Barreiro E. Skeletal Muscle Dysfunction in Chronic Obstructive Pulmonary Disease. What We Know and Can Do for Our Patients. Am J Respir Crit Care Med 2019; 198:175-186. [PMID: 29554438 DOI: 10.1164/rccm.201710-2140ci] [Citation(s) in RCA: 151] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Skeletal muscle dysfunction occurs in patients with chronic obstructive pulmonary disease (COPD) and affects both ventilatory and nonventilatory muscle groups. It represents a very important comorbidity that is associated with poor quality of life and reduced survival. It results from a complex combination of functional, metabolic, and anatomical alterations leading to suboptimal muscle work. Muscle atrophy, altered fiber type and metabolism, and chest wall remodeling, in the case of the respiratory muscles, are relevant etiological contributors to this process. Muscle dysfunction worsens during COPD exacerbations, rendering patients progressively less able to perform activities of daily living, and it is also associated with poor outcomes. Muscle recovery measures consisting of a combination of pulmonary rehabilitation, optimized nutrition, and other strategies are associated with better prognosis when administered in stable patients as well as after exacerbations. A deeper understanding of this process' pathophysiology and clinical relevance will facilitate the use of measures to alleviate its effects and potentially improve patients' outcomes. In this review, a general overview of skeletal muscle dysfunction in COPD is offered to highlight its relevance and magnitude to expert practitioners and scientists as well as to the average clinician dealing with patients with chronic respiratory diseases.
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Affiliation(s)
- Ariel Jaitovich
- 1 Division of Pulmonary and Critical Care Medicine and.,2 Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York
| | - Esther Barreiro
- 3 Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, Institut Hospital del Mar d'Investigacions Mèdiques-Hospital del Mar, Parc de Salut Mar, Health and Experimental Sciences Department, Universitat Pompeu Fabra, Barcelona Biomedical Research Park, Barcelona, Spain; and.,4 Centro de Investigación en Red de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
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29
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Geltser BI, Kurpatov IG, Dej AA, Kozhanov AG. Respiratory muscles dysfunction and respiratory diseases. TERAPEVT ARKH 2019; 91:93-100. [PMID: 31094466 DOI: 10.26442/00403660.2019.03.000108] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This review presents an analysis of the literature on the topic of respiratory muscle (RM) dysfunction in various forms of respiratory pathology: chronic obstructive pulmonary disease (COPD), asthma, community-acquired pneumonia, idiopathic pulmonary fibrosis (IPF), sarcoidosis and interstitial lung diseases (ILD), associated with systemic connective tissue diseases (polymyositis, dermatomyositis and systemic lupus erythematosus - SLE). Various clinical and pathophysiological aspects of RM dysfunction and general patterns of its pathogenesis were examined. It was proved that the role of RM in the development of respiratory failure depends on the form and stage of the pulmonary pathology and the severity of systemic manifestations of these diseases: excessive proteolysis, oxidative stress, hypoxia, chronic systemic inflammation. These factors modify the morphofunctional status of RM, worsens their contractile function, which is contributed to the development of respiratory failure. In some cases, the primary weakness of RM precedes the clinical manifestation of pulmonary pathology, which is distinctive for some variants of myositis-associated ILD and SLE. Endogenous intoxication syndrome plays a significant role in the development of RM dysfunction during community-acquired pneumonia. It is noted that sarcoid pulmonary ventilation disorders associate with the RM weakness, but not with the degree of lung damage. In most cases, secondary RM dysfunction predominates that contributes to respiratory failure progression, which is especially noticeable in case of COPD, asthma and IPF.
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Affiliation(s)
- B I Geltser
- Far Eastern Federal University of the Ministry of Education and Science, Vladivostok, Russia.,Pacific State Medical University of the Ministry of Health of the Russian Federation, Vladivostok, Russi
| | - I G Kurpatov
- Pacific State Medical University of the Ministry of Health of the Russian Federation, Vladivostok, Russi
| | - A A Dej
- Far Eastern Federal University of the Ministry of Education and Science, Vladivostok, Russia
| | - A G Kozhanov
- Far Eastern Federal University of the Ministry of Education and Science, Vladivostok, Russia
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30
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Lin L, Hou G, Han D, Yin Y, Kang J, Wang Q. Ursolic acid alleviates airway-vessel remodeling and muscle consumption in cigarette smoke-induced emphysema rats. BMC Pulm Med 2019; 19:103. [PMID: 31170951 PMCID: PMC6555740 DOI: 10.1186/s12890-019-0826-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 02/28/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND This study assessed the effects of ursolic acid (UA) on airway-vessel remodeling and muscle atrophy in cigarette smoke (CS)-induced emphysema rats and investigated potential underlying mechanisms. METHODS Emphysema was induced in a rat model with 3 months of CS exposure. Histology and immunohistochemistry (IHC) stains were used to assess airway-vessel remodeling and muscle atrophy-associated changes. Levels of cleaved-caspase3, 8-OHdG, and S100A4 were measured in airways and associated vessels to evaluate cell apoptosis, oxidant stress, epithelial-to-mesenchymal transition (EMT), and endothelial-to-mesenchymal transition (EndMT)-associated factors. Western blot and/or IHC analyses were performed to measure transforming growth factor-beta 1(TGF-β1)/Smad2.3, alpha-smooth muscle actin (α-SMA), and insulin-like growth factor 1 (IGF1) expression. We also gave cultured HBE and HUVEC cells Cigarette Smoke Extract (CSE) administration and UA intervention. Using Western blot method to measure TGF-β1/Smad2.3, α-SMA, S100A4, and IGF1 molecules expression. RESULTS UA decreased oxidant stress and cell apoptosis in airway and accompanying vascular walls of cigarette smoke-induced emphysema model rats. UA alleviated EMT, EndMT, changes associated with airway-vessel remodeling and muscle atrophy. The UA effects were associated with IGF1 and TGF-β1/Smad2.3 pathways. CONCLUSIONS UA reduced EMT, EndMT, airway-vessel remodeling, and musculi soleus atrophy in CS-induced emphysema model rats at least partly through IGF1 and TGF-β1/Smad2.3 signaling pathways.
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Affiliation(s)
- Li Lin
- Institute of Respiratory Disease, The First Hospital of China Medical University, No. 155 Nanjing North Street, Shenyang, 110001 China
| | - Gang Hou
- Institute of Respiratory Disease, The First Hospital of China Medical University, No. 155 Nanjing North Street, Shenyang, 110001 China
| | - Dan Han
- Institute of Respiratory Disease, The First Hospital of China Medical University, No. 155 Nanjing North Street, Shenyang, 110001 China
| | - Yan Yin
- Institute of Respiratory Disease, The First Hospital of China Medical University, No. 155 Nanjing North Street, Shenyang, 110001 China
| | - Jian Kang
- Institute of Respiratory Disease, The First Hospital of China Medical University, No. 155 Nanjing North Street, Shenyang, 110001 China
| | - Qiuyue Wang
- Institute of Respiratory Disease, The First Hospital of China Medical University, No. 155 Nanjing North Street, Shenyang, 110001 China
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Abstract
PURPOSE To describe and discuss the available evidence in the literature concerning muscle function and the association between smoking and muscle dysfunction in smokers and patients with mild chronic obstructive pulmonary disease (COPD). METHODS The literature search involved the following databases: PubMed, Pedro, CINAHL, Cochrane Library, Lilacs, and EMBASE. Studies were included if they investigated muscle strength and/or endurance and/or cross-sectional area (CSA) in smokers and/or patients with COPD classified as Global Initiative for Obstructive Lung Disease (GOLD) I and without lung cancer. Two authors screened and identified the studies for inclusion. RESULTS Eighteen studies were identified. Some studies found lower values in a variety of muscle strength variables in smokers compared with nonsmoking controls, whereas others found similar values between these groups. When comparing patients with COPD classified as GOLD I with smokers, COPD patients showed lower muscle strength. Two studies found no differences in muscle CSA between smokers compared with nonsmoking controls. Some preliminary evidence also shows that patients with COPD classified as GOLD I had lower CSA in comparison with smokers. CONCLUSION Results concerning muscle dysfunction in smokers are divergent, since some studies have shown worse results in a variety of muscle strength variables in smokers compared with nonsmoking controls, whereas other studies have not. Moreover, there is rather preliminary evidence indicating worse muscle dysfunction and lower CSA in patients with mild COPD in comparison with healthy (or non-COPD) smokers.
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Leite MR, Ramos EMC, Kalva-Filho CA, De Alencar Silva BS, Freire APCF, Campos EZ, Ramos D. Analysis of the heart rate deflection point as a tool for exercise prescription in subjects with COPD - a cross-sectional study. Physiother Theory Pract 2019; 36:1322-1328. [PMID: 30821563 DOI: 10.1080/09593985.2019.1579282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Background: Prescription of exercise training in subjects with chronic obstructive pulmonary disease (COPD) remains a challenge in clinical practice. The heart rate deflection point (HRDP) is an option to reduce costs, reflects the anaerobic threshold and it is noninvasive; however its applicability in COPD is still unknown. Aim: To compare HRDP with gas exchange threshold values (GET) in subjects with COPD. Methods: Thirty-one subjects were evaluated in this cross-sectional study, diagnosed with COPD. The subjects performed an incremental exercise test on a treadmill to determine the GET, peak oxygen consumption (VO2PEAK), speed corresponding to VO2PEAK (sVO2PEAK), and peak values of heart rate (HRPEAK). To determine HRDP the heart rate values observed were plotted as a function of intensity. Results: The HRDP was visible in 96.77% of subjects. There was no difference between HRDP and GET (p = 0.07) and a moderate intraclass correlation coefficient (ICC): 0.74 [0.52-0.87] and high limits of agreements were presented (±1.1 km·h-1). Conclusion: The HRDP cannot be used to determine the limits between the physiological domains of these subjects. Thus, although significant correlation was found between HRDP and GET, their application for training prescription and monitoring in subjects with COPD proved to be limited.
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Affiliation(s)
- Marceli Rocha Leite
- Department of Physical Therapy, Universidade Estadual Paulista (UNESP) , Presidente Prudente, São Paulo, Brazil
| | - Ercy Mara Cipulo Ramos
- Department of Physical Therapy, Universidade Estadual Paulista (UNESP) , Presidente Prudente, São Paulo, Brazil
| | - Carlos Augusto Kalva-Filho
- Department of Rehabilitation and Functional Performance, University of São Paulo , Ribeirão Preto, São Paulo, Brazil
| | | | | | | | - Dionei Ramos
- Department of Physical Therapy, Universidade Estadual Paulista (UNESP) , Presidente Prudente, São Paulo, Brazil
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33
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Bufei Jianpi Granules Reduce Quadriceps Muscular Cell Apoptosis by Improving Mitochondrial Function in Rats with Chronic Obstructive Pulmonary Disease. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:1216305. [PMID: 30723509 PMCID: PMC6339712 DOI: 10.1155/2019/1216305] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 12/03/2018] [Accepted: 12/27/2018] [Indexed: 01/08/2023]
Abstract
Background Cell apoptosis is an important mechanism underlying skeletal muscle dysfunction in chronic obstructive pulmonary disease (COPD) patients, and mitochondrial dysfunction is recognized as a central aspect contributing to skeletal muscle deterioration. Bufei Jianpi granules have been confirmed effective for improving motor function in COPD patients, but the specific mechanism for this improved function remains unknown. This study explored the mechanisms by which Bufei Jianpi granules improve cell apoptosis and mitochondrial dysfunction in COPD. Methods Sprague-Dawley rats were randomized into control, model, Bufei Jianpi, and aminophylline groups. A stable COPD rat model was induced with respective repeated cigarette smoke inhalation and intragastric bacterial infection, and rats were sacrificed after 20 weeks; the quadriceps muscle was harvested from each rat. Skeletal muscle mitochondria were extracted for measurements of mitochondrial membrane potential (MMP) and mitochondrial permeability transition pore openings (mPTPs). ATP levels were determined with a firefly luciferase-based ATP assay kit. The rates of cell apoptosis were determined by the transferase-mediated deoxyuridine triphosphate-biotin nick end labeling (TUNEL) method. Cyto C and caspase-3 mRNA and protein levels were measured by qPCR and western blotting. Results ATP, MMP, and mPTPs were markedly decreased in COPD rats, while cell apoptosis, caspase-3, and Cyto C were increased (P<0.01). All aforementioned parameters were improved in treatment groups (P<0.05). ATP, MMP, and mPTPs were significantly higher in the Bufei Jianpi group than in the aminophylline group, while cell apoptosis, caspase-3, and Cyto C were lower (P<0.05). Conclusions Bufei Jianpi granules can inhibit mitochondrial dysfunction and cell apoptosis in peripheral muscles, which might be the mechanism involved in improving skeletal muscle function in COPD patients.
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35
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Thyregod M, Løkke A, Bodtger U. The impact of pulmonary rehabilitation on severe physical inactivity in patients with chronic obstructive pulmonary disease: a pilot study. Int J Chron Obstruct Pulmon Dis 2018; 13:3359-3365. [PMID: 30349239 PMCID: PMC6190821 DOI: 10.2147/copd.s174710] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Introduction In patients with COPD, severe physical inactivity (SPI, which is defined as total daily energy expenditure/resting energy expenditure; physical activity level [PAL] ratio, <1.4) is associated with increased morbidity and mortality. Pulmonary rehabilitation (PR) increases physical capacity in COPD, but the impact on SPI is unknown. In this study, we aimed at elucidating the prevalence of SPI in COPD patients attending standard PR, the impact of PR on SPI prevalence, and the relationship between SPI and time spent in moderate physical activity thus whether American College of Sports Medicine (ACSM) recommendations are clinically useful in excluding SPI in COPD. Methods This is a prospective non-interventional pilot study on patients with COPD completing PR, consenting to wear an accelerometer (Sensewear© Armband) for a week before and after completing PR to assess changes in energy expenditure, time spent in physical activity, and number of daily steps. Low level of daily physical activity was not an inclusion criterion. Results In total, 57 patients completed the study and 31 (54%) had SPI at baseline. In patients with SPI, baseline median FEV1 was 48 (range, 28–86) % of predicted and GOLD B, n=11 (35%)/GOLD D, n=20 (65%). Surprisingly, 31 of SPI patients (97%) spent ≥150 minutes/week in moderate physical activity. After rehabilitation, 24 (78%) did not change activity level and were persistently SPI. We observed no differences at baseline between patient responding (n=7) vs not responding (n=24) to PR. Responders increased number of daily steps and time spent in lighter but not moderate physical activity during rehabilitation. Conclusion In this pilot study, SPI was prevalent, and PR had limited impact. Contraintui-tively, most patients with SPI complied with general recommendations of weekly hours spent in moderate physical activity. Our study highlights that increasing time spent in light activity rather than improving time spent in moderate activity is important in COPD patients with chronic dyspnea.
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Affiliation(s)
- Mimi Thyregod
- Department of Respiratory Medicine, Naestved Hospital, Naestved, Denmark, .,Institute for Regional Health Research, University of Southern Denmark, Odense, Denmark,
| | - Anders Løkke
- Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Aarhus, Denmark
| | - Uffe Bodtger
- Department of Respiratory Medicine, Naestved Hospital, Naestved, Denmark, .,Institute for Regional Health Research, University of Southern Denmark, Odense, Denmark,
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36
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Zeng Y, Jiang F, Chen Y, Chen P, Cai S. Exercise assessments and trainings of pulmonary rehabilitation in COPD: a literature review. Int J Chron Obstruct Pulmon Dis 2018; 13:2013-2023. [PMID: 29983556 PMCID: PMC6027710 DOI: 10.2147/copd.s167098] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Skeletal muscle dysfunction leads to reduction in activity in patients with COPD. As an essential part of the management of COPD, pulmonary rehabilitation (PR) alleviates dyspnea and fatigue, improves exercise tolerance and health-related quality of life, and reduces hospital admissions and mortality for COPD patients. Exercise is the key component of PR, which is composed of exercise assessment and training therapy. To evaluate PR’s application in clinical practice, this article summarizes the common methods of exercise measurement and exercise training for patients with COPD. Exercise assessments should calculate patients’ symptoms, endurance, strength, and health-related quality of life. After calculation, detailed exercise therapies should be developed, which may involve endurance, strength, and respiratory training. The detailed exercise training of each modality is mentioned in this review. Although various methods and therapies of PR have been used in COPD patients, developing an individualized exercise training prescription is the target. More studies are warranted to support the evidence and examine the effects of long-term benefits of exercise training for patients with COPD in each stage.
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Affiliation(s)
- Yuqin Zeng
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China, .,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China, .,Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China,
| | - Fen Jiang
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China, .,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China, .,Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China,
| | - Yan Chen
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China, .,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China, .,Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China,
| | - Ping Chen
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China, .,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China, .,Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China,
| | - Shan Cai
- Department of Pulmonary and Critical Care Medicine, the Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, China, .,Research Unit of Respiratory Disease, Central South University, Changsha, Hunan 410011, China, .,Hunan Diagnosis and Treatment Center of Respiratory Disease, Changsha, Hunan 410011, China,
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Terry EE, Zhang X, Hoffmann C, Hughes LD, Lewis SA, Li J, Wallace MJ, Riley LA, Douglas CM, Gutierrez-Monreal MA, Lahens NF, Gong MC, Andrade F, Esser KA, Hughes ME. Transcriptional profiling reveals extraordinary diversity among skeletal muscle tissues. eLife 2018; 7:34613. [PMID: 29809149 PMCID: PMC6008051 DOI: 10.7554/elife.34613] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 05/15/2018] [Indexed: 11/24/2022] Open
Abstract
Skeletal muscle comprises a family of diverse tissues with highly specialized functions. Many acquired diseases, including HIV and COPD, affect specific muscles while sparing others. Even monogenic muscular dystrophies selectively affect certain muscle groups. These observations suggest that factors intrinsic to muscle tissues influence their resistance to disease. Nevertheless, most studies have not addressed transcriptional diversity among skeletal muscles. Here we use RNAseq to profile mRNA expression in skeletal, smooth, and cardiac muscle tissues from mice and rats. Our data set, MuscleDB, reveals extensive transcriptional diversity, with greater than 50% of transcripts differentially expressed among skeletal muscle tissues. We detect mRNA expression of hundreds of putative myokines that may underlie the endocrine functions of skeletal muscle. We identify candidate genes that may drive tissue specialization, including Smarca4, Vegfa, and Myostatin. By demonstrating the intrinsic diversity of skeletal muscles, these data provide a resource for studying the mechanisms of tissue specialization. About 40% of our weight is formed of skeletal muscles, the hundreds of muscles in our bodies that can be voluntarily controlled by our nervous system. At the moment, the research community largely sees all these muscles as a single group whose tissues are virtually interchangeable. Yet, skeletal muscles have highly diverse origins, shapes and roles. For example, our diaphragm is a long muscle that contracts slowly and rhythmically so we can draw breaths, while tiny muscles in our eyes generate the short and precise movements of our eyeballs. Different skeletal muscles also respond in distinct ways to injuries, drugs and diseases. This suggests that these muscles may be diverse at the genetic level. While all the cells in our body have the same genetic information, exactly which genes are turned on and off (or ‘expressed’) changes between types of cells. On top of this ‘on or off’ regulation, the level of expression of a gene – how active it is – can also differ. However, the studies that examine the differences in gene expression between tissues usually overlook skeletal muscles. Here, Terry et al. use genetic techniques to measure how genes are expressed in over 20 types of muscle in mice and rats. The results show that the expression levels of over 50% of all the animals’ genes vary between muscles. In fact, any two types of muscles express on average 13% of their genes differently from each other. The analyses yield further unexpected findings. For example, the expression levels in a muscle in the foot that helps to flex the rodents’ toes are more similar to those found in eye muscles than to the ones observed in limb muscles. These conclusions indicate that skeletal muscles are a widely diverse family of tissues. The research community will be able to use the data collected by Terry et al. to explore further the origins and the consequences of the differences between skeletal muscles. This could help researchers to understand why specific groups of muscles are more susceptible to disease, or react differently to a drug. This knowledge could also be exploited to refine approaches in tissue engineering, which aims to replace damaged muscles in the body.
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Affiliation(s)
- Erin E Terry
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, United States
| | - Xiping Zhang
- Department of Physiology and Functional Genomics, University of Florida College of Medicine, Gainesville, United States
| | - Christy Hoffmann
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, United States
| | - Laura D Hughes
- Department of Integrative, Structural and Computational Biology, The Scripps Research Institute, La Jolla, United States
| | - Scott A Lewis
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, United States
| | - Jiajia Li
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, United States
| | - Matthew J Wallace
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, United States
| | - Lance A Riley
- Department of Physiology and Functional Genomics, University of Florida College of Medicine, Gainesville, United States
| | - Collin M Douglas
- Department of Physiology and Functional Genomics, University of Florida College of Medicine, Gainesville, United States
| | - Miguel A Gutierrez-Monreal
- Department of Physiology and Functional Genomics, University of Florida College of Medicine, Gainesville, United States
| | - Nicholas F Lahens
- Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
| | - Ming C Gong
- Department of Physiology, University of Kentucky School of Medicine, Lexington, United States
| | - Francisco Andrade
- Department of Physiology, University of Kentucky School of Medicine, Lexington, United States
| | - Karyn A Esser
- Department of Physiology and Functional Genomics, University of Florida College of Medicine, Gainesville, United States
| | - Michael E Hughes
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, United States
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Barreiro E, Jaitovich A. Muscle atrophy in chronic obstructive pulmonary disease: molecular basis and potential therapeutic targets. J Thorac Dis 2018; 10:S1415-S1424. [PMID: 29928523 DOI: 10.21037/jtd.2018.04.168] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Patients with chronic obstructive pulmonary disease (COPD) experience several systemic manifestations such skeletal muscle dysfunction with and without muscle mass loss. Moreover, frequent comorbidities such as nutritional abnormalities, heart failure, and pulmonary hypertension, which are frequently associated with COPD may further contribute to skeletal muscle mass loss and dysfunction. Muscle dysfunction impairs the patients' exercise capacity and quality of life as daily life activities may be hampered by this problem. Importantly, impaired muscle function and mass loss have been shown to impact negatively on the patients' prognosis and survival in several studies. Thus, this is a major clinical problem that deserves special attention in clinical settings. During the course of exacerbations muscle mass loss takes place, hence aggravating muscle status and performance even after hospital discharge, especially in the frequently exacerbator patients. Several factors and biological mechanisms are involved in the etiology of COPD muscle dysfunction. The biological mechanisms identified so far offer a niche for therapeutic interventions in the patients. In the current review, a general overview of the most relevant etiologic factors and their target biological mechanisms through which muscle mass loss and dysfunction take place in both the respiratory and lower limb muscles in COPD patients is provided. We conclude that more clinical research is still needed targeted to test several therapeutic interventions. Given its prognostic value, the assessment of skeletal muscle dysfunction should be included in the routine evaluation of patients with chronic respiratory disorders and in critical care settings.
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Affiliation(s)
- Esther Barreiro
- Respiratory Medicine Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, Institute of Medical Research of Hospital del Mar (IMIM)-Hospital del Mar, Parc de Salut Mar, Barcelona Biomedical Research Park (PRBB), Barcelona, Spain.,Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III (ISCIII), Barcelona, Spain
| | - Ariel Jaitovich
- Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY, USA.,Department of Molecular and Cellular Physiology, Albany Medical College, Albany, NY, USA
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39
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Dubé BP, Laveneziana P. Effects of aging and comorbidities on nutritional status and muscle dysfunction in patients with COPD. J Thorac Dis 2018; 10:S1355-S1366. [PMID: 29928518 DOI: 10.21037/jtd.2018.02.20] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a prevalent, complex and debilitating disease which imposes a formidable burden on patients and the healthcare system. The recognition that COPD is a multifaceted disease is not new, and increasing evidence have outlined the importance of its extra-pulmonary manifestations and its relation to other comorbid conditions in the clinical course of the disease and its societal cost. The relationship between aging, COPD and its comorbidities on skeletal muscle function and nutritional status is complex, multidirectional and incompletely understood. Despite this, the current body of knowledge allows the identification of various, seemingly partially independent factors related both to the normal aging process and to the independent deleterious effects of chronic diseases on muscle function and body composition. There is a dire need of studies evaluating the relative contribution of each of these factors, and their potential synergistic effects in patients with COPD and advanced age/comorbid conditions, in order to delineate the best course of therapeutic action in this increasingly prevalent population.
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Affiliation(s)
- Bruno-Pierre Dubé
- Département de Médecine, Service de Pneumologie, Centre Hospitalier de l'Université de Montréal (CHUM) Montréal, Québec, Canada.,Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM) - Carrefour de l'Innovation et de l'Évaluation en Santé, Montréal, Québec, Canada
| | - Pierantonio Laveneziana
- Sorbonne Université, INSERM, UMRS1158 Neurophysiologie respiratoire expérimentale et clinique, Paris, France.,AP-HP, Groupe Hospitalier Pitié-Salpêtrière Charles Foix, Service des Explorations Fonctionnelles de la Respiration, de l'Exercice et de la Dyspnée du Département R3S, Paris, France
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40
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Greising SM, Ottenheijm CAC, O'Halloran KD, Barreiro E. Diaphragm plasticity in aging and disease: therapies for muscle weakness go from strength to strength. J Appl Physiol (1985) 2018; 125:243-253. [PMID: 29672230 DOI: 10.1152/japplphysiol.01059.2017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The diaphragm is the main inspiratory muscle and is required to be highly active throughout the life span. The diaphragm muscle must be able to produce and sustain various behaviors that range from ventilatory to nonventilatory such as those required for airway maintenance and clearance. Throughout the life span various circumstances and conditions may affect the ability of the diaphragm muscle to generate requisite forces, and in turn the diaphragm muscle may undergo significant weakness and dysfunction. For example, hypoxic stress, critical illness, cancer cachexia, chronic obstructive pulmonary disorder, and age-related sarcopenia all represent conditions in which significant diaphragm muscle dysfunction exits. This perspective review article presents several interesting topics involving diaphragm plasticity in aging and disease that were presented at the International Union of Physiological Sciences Conference in 2017. This review seeks to maximize the broad and collective research impact on diaphragm muscle dysfunction in the search for transformative treatment approaches to improve the diaphragm muscle health during aging and disease.
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Affiliation(s)
- Sarah M Greising
- Department of Physiology and Biomedical Engineering, Mayo Clinic , Rochester, Minnesota.,School of Kinesiology, University of Minnesota , Minneapolis, Minnesota
| | - Coen A C Ottenheijm
- Department of Physiology, VU University Medical Center , Amsterdam , The Netherlands.,Cellular and Molecular Medicine, University of Arizona , Tucson, Arizona
| | - Ken D O'Halloran
- Department of Physiology, University College Cork , Cork , Ireland
| | - Esther Barreiro
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research Group, IMIM-Hospital del Mar, Parc de Salut Mar, Health and Experimental Sciences Department, Universitat Pompeu Fabra, Barcelona Biomedical Research Park, Barcelona , Spain.,Centro de Investigación en Red de Enfermedades Respiratorias, Instituto de Salud Carlos III , Barcelona , Spain
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41
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Resorlu M, Karatag O, Toprak CA, Ozturk MO. Neglected areas on thorax computed tomography evaluation in patients with chronic obstructive pulmonary disease: Paravertebral muscles and para-aortic adipose tissue. J Med Imaging Radiat Oncol 2018; 62:487-492. [PMID: 29457360 DOI: 10.1111/1754-9485.12716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 01/20/2018] [Indexed: 01/22/2023]
Abstract
INTRODUCTION This study, investigated the para-aortic adipose tissue cross-sectional area, a novel predictor of cardiovascular diseases and degenerative changes in the paravertebral muscles, in patients with chronic obstructive pulmonary disease (COPD). METHOD One hundred cases diagnosed as COPD and 50 healthy individuals with similar demographic characteristics were evaluated. Para-aortic adipose tissue cross-sectional area (mm2 ), subcutaneous adipose tissue thickness (mm), paravertebral muscle area (mm2 ) and fat deposition in muscle tissue were assessed radiologically. RESULTS Paravertebral muscle mass was lower in the patient group compared to the healthy individuals (471.41 ± 157.71 mm2 and 561.58 + 151.03 mm2 , respectively; P = 0.001). Paravertebral muscle attenuation values were also lower in the patient group, and the grade of deposition increased (P = 0.012 and P = 0.045, respectively). Although subcutaneous adipose tissue thicknesses were similar in the patient and control groups, para-aortic adipose tissue cross-sectional area was higher in the patients with COPD than in the control group (439.34 ± 267.17 mm2 and 333.82 ± 165.23 mm2 , respectively, P = 0.012). The correlation between subcutaneous adipose tissue and para-aortic adipose tissue observed in the healthy group was not present in the subjects with COPD. CONCLUSION Chronic obstructive pulmonary disease causes morphological changes in paravertebral muscles and para-aortic adipose tissue. Degenerative changes in the paravertebral muscles occur secondary to systemic inflammation, comorbidity and drugs used in COPD. Factors such as insulin resistance and steroid use result in an increase in para-aortic adipose tissue mass.
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Affiliation(s)
- Mustafa Resorlu
- Department of Radiology, Faculty of Medicine, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - Ozan Karatag
- Department of Radiology, Faculty of Medicine, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - Canan A Toprak
- Department of Radiology, Faculty of Medicine, Canakkale Onsekiz Mart University, Canakkale, Turkey
| | - Muhsin O Ozturk
- Department of Radiology, Faculty of Medicine, Canakkale Onsekiz Mart University, Canakkale, Turkey
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42
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Guitart M, Lloreta J, Mañas‐Garcia L, Barreiro E. Muscle regeneration potential and satellite cell activation profile during recovery following hindlimb immobilization in mice. J Cell Physiol 2018; 233:4360-4372. [DOI: 10.1002/jcp.26282] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 11/13/2017] [Indexed: 12/24/2022]
Affiliation(s)
- Maria Guitart
- Department of Pulmonology‐Muscle Wasting Cachexia in Chronic Respiratory Diseases Lung Cancer Research GroupIMIM‐Hospital del Mar Parc de Salut Mar, Health and Sciences Experimental Department (CEXS)Universitat Pompeu Fabra (UPF)Barcelona Biomedical Research Park (PRBB)BarcelonaSpain
- Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES)Instituto de Salud Carlos III (ISCIII)BarcelonaSpain
| | - Josep Lloreta
- Department of PathologyHospital del Mar, Parc de Salut Mar, Health and Experimental Sciences Department (CEXS)Universitat Pompeu Fabra (UPF)Barcelona Biomedical Research Park (PRBB)BarcelonaSpain
| | - Laura Mañas‐Garcia
- Department of Pulmonology‐Muscle Wasting Cachexia in Chronic Respiratory Diseases Lung Cancer Research GroupIMIM‐Hospital del Mar Parc de Salut Mar, Health and Sciences Experimental Department (CEXS)Universitat Pompeu Fabra (UPF)Barcelona Biomedical Research Park (PRBB)BarcelonaSpain
| | - Esther Barreiro
- Department of Pulmonology‐Muscle Wasting Cachexia in Chronic Respiratory Diseases Lung Cancer Research GroupIMIM‐Hospital del Mar Parc de Salut Mar, Health and Sciences Experimental Department (CEXS)Universitat Pompeu Fabra (UPF)Barcelona Biomedical Research Park (PRBB)BarcelonaSpain
- Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES)Instituto de Salud Carlos III (ISCIII)BarcelonaSpain
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Zhang JQ, Long XY, Xie Y, Zhao ZH, Fang LZ, Liu L, Fu WP, Shu JK, Wu JH, Dai LM. Relationship between PPARα mRNA expression and mitochondrial respiratory function and ultrastructure of the skeletal muscle of patients with COPD. Bioengineered 2017; 8:723-731. [PMID: 28708015 DOI: 10.1080/21655979.2017.1346757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Peripheral muscle dysfunction is an important complication in patients with chronic obstructive pulmonary disease (COPD). The objective of this study was to explore the relationship between the levels of peroxisome proliferator-activated receptor α (PPARα) mRNA expression and the respiratory function and ultrastructure of mitochondria in the vastus lateralis of patients with COPD. Vastus lateralis biopsies were performed on 14 patients with COPD and 6 control subjects with normal lung function. PPARα mRNA levels in the muscle tissue were detected by real-time PCR. A Clark oxygen electrode was used to assess mitochondrial respiratory function. Mitochondrial number, fractional area in skeletal muscle cross-sections, and Z-line width were observed via transmission electron microscopy. The PPARα mRNA expression was significantly lower in COPD patients with low body mass index (BMIL) than in both COPD patients with normal body mass index (BMIN) and controls. Mitochondrial respiratory function (assessed by respiratory control ratio) was impaired in COPD patients, particularly in BMIL. Compared with that in the control group, mitochondrial number and fractional area were lower in the BMIL group, but were maintained in the BMIN group. Further, the Z-line became narrow in the BMIL group. PPARα mRNA expression was positively related to mitochondrial respiratory function and volume density. In COPD patients with BMIN, mitochondria volume density was maintained, while respiratory function decreased, whereas both volume density and respiratory function decreased in COPD patients with BMIL. PPARα mRNA expression levels are associated with decreased mitochondrial respiratory function and volume density, which may contribute to muscle dysfunction in COPD patients.
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Affiliation(s)
- Jian-Qing Zhang
- a Department of Respiratory Critical Care Medicine , the First Affiliated Hospital of Kunming Medical University , Kunming , China
| | - Xiang-Yu Long
- a Department of Respiratory Critical Care Medicine , the First Affiliated Hospital of Kunming Medical University , Kunming , China
| | - Yu Xie
- b Department of hematology , the First Affiliated Hospital of Kunming Medical University , Kunming , China
| | - Zhi-Huan Zhao
- a Department of Respiratory Critical Care Medicine , the First Affiliated Hospital of Kunming Medical University , Kunming , China
| | - Li-Zhou Fang
- a Department of Respiratory Critical Care Medicine , the First Affiliated Hospital of Kunming Medical University , Kunming , China
| | - Ling Liu
- a Department of Respiratory Critical Care Medicine , the First Affiliated Hospital of Kunming Medical University , Kunming , China
| | - Wei-Ping Fu
- a Department of Respiratory Critical Care Medicine , the First Affiliated Hospital of Kunming Medical University , Kunming , China
| | - Jing-Kui Shu
- a Department of Respiratory Critical Care Medicine , the First Affiliated Hospital of Kunming Medical University , Kunming , China
| | - Jiang-Hai Wu
- a Department of Respiratory Critical Care Medicine , the First Affiliated Hospital of Kunming Medical University , Kunming , China
| | - Lu-Ming Dai
- a Department of Respiratory Critical Care Medicine , the First Affiliated Hospital of Kunming Medical University , Kunming , China
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Lopez-Campos JL, Caballero-Eraso C, Barrot-Cortés E. Home mechanical ventilation for stable COPD in GOLD 2017: What are we ventilating? Respirology 2017; 22:1497-1499. [PMID: 28560720 DOI: 10.1111/resp.13091] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 05/06/2017] [Accepted: 05/07/2017] [Indexed: 01/30/2023]
Affiliation(s)
- Jose L Lopez-Campos
- Medical-Surgical Unit of Respiratory Diseases, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/University of Seville, Seville, Spain.,Centre for Biomedical Research in Respiratory Diseases Network (CIBERES), Institute of Health Carlos III, Madrid, Spain
| | - Candelaria Caballero-Eraso
- Medical-Surgical Unit of Respiratory Diseases, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/University of Seville, Seville, Spain
| | - Emilia Barrot-Cortés
- Medical-Surgical Unit of Respiratory Diseases, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/University of Seville, Seville, Spain.,Centre for Biomedical Research in Respiratory Diseases Network (CIBERES), Institute of Health Carlos III, Madrid, Spain
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46
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Barreiro E. Disfunción muscular en la enfermedad pulmonar obstructiva crónica: novedades en la última década. Arch Bronconeumol 2017; 53:43-44. [DOI: 10.1016/j.arbres.2016.07.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/07/2016] [Accepted: 07/10/2016] [Indexed: 01/16/2023]
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Chacon-Cabrera A, Gea J, Barreiro E. Short- and Long-Term Hindlimb Immobilization and Reloading: Profile of Epigenetic Events in Gastrocnemius. J Cell Physiol 2016; 232:1415-1427. [DOI: 10.1002/jcp.25635] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 10/05/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Alba Chacon-Cabrera
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research group, IMIM-Hospital del Mar, Parc de Salut Mar, Health and Experimental Sciences Department (CEXS); Universitat Pompeu Fabra (UPF); Barcelona Spain
- Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES); Instituto de Salud Carlos III (ISCIII); Barcelona Spain
| | - Joaquim Gea
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research group, IMIM-Hospital del Mar, Parc de Salut Mar, Health and Experimental Sciences Department (CEXS); Universitat Pompeu Fabra (UPF); Barcelona Spain
- Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES); Instituto de Salud Carlos III (ISCIII); Barcelona Spain
| | - Esther Barreiro
- Pulmonology Department-Muscle Wasting and Cachexia in Chronic Respiratory Diseases and Lung Cancer Research group, IMIM-Hospital del Mar, Parc de Salut Mar, Health and Experimental Sciences Department (CEXS); Universitat Pompeu Fabra (UPF); Barcelona Spain
- Centro de Investigación en Red de Enfermedades Respiratorias (CIBERES); Instituto de Salud Carlos III (ISCIII); Barcelona Spain
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Physiological and functional failure in chronic obstructive pulmonary disease, congestive heart failure and cancer: a debilitating intersection of sarcopenia, cachexia and breathlessness. Curr Opin Support Palliat Care 2016; 10:236-41. [DOI: 10.1097/spc.0000000000000222] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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