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Dupuis A, Thierry A, Perotin JM, Ancel J, Dormoy V, Dury S, Deslée G, Launois C. Obesity Impact on Dyspnea in COPD Patients. Int J Chron Obstruct Pulmon Dis 2024; 19:1695-1706. [PMID: 39070800 PMCID: PMC11277818 DOI: 10.2147/copd.s450366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 04/26/2024] [Indexed: 07/30/2024] Open
Abstract
Background The role of obesity on dyspnea in chronic obstructive pulmonary disease (COPD) patients remains unclear. We aimed to provide an assessment of dyspnea in COPD patients according to their Body Mass Index (BMI) and to investigate the impact of obesity on dyspnea according to COPD severity. Methods One hundred and twenty seven COPD patients with BMI ≥ 18.5 kg/m² (63% male, median (interquartile range) post bronchodilator forced expiratory volume of 1 second (post BD FEV1) at 51 (34-66) % pred) were consecutively included. Dyspnea was assessed by mMRC (Modified medical research council) scale. Lung function tests were recorded, and emphysema was quantified on CT-scan (computed tomography-scan). Results Twenty-five percent of the patients were obese (BMI ≥ 30kg/m²), 66% of patients experienced disabling dyspnea (mMRC ≥ 2). mMRC scores did not differ depending on BMI categories (2 (1-3) for normal weight, 2 (1-3) 1 for overweight and 2 (1-3) for obese patients; p = 0.71). Increased mMRC scores (0-1 versus 2-3 versus 4) were associated with decreased post BD-FEV1 (p < 0.01), higher static lung hyperinflation (inspiratory capacity/total lung capacity (IC/TLC), p < 0.01), reduced DLCO (p < 0.01) and higher emphysema scores (p < 0.01). Obese patients had reduced static lung hyperinflation (IC/TLC p < 0.01) and lower emphysema scores (p < 0.01) than non-obese patients. mMRC score increased with GOLD grades (1-2 versus 3-4) in non-obese patients but not in obese patients, in association with a trend towards reduced static lung hyperinflation and lower emphysema scores. Conclusion By contrast with non-obese patients, dyspnea did not increase with spirometric GOLD grades in obese patients. This might be explained by a reduced lung hyperinflation related to the mechanical effects of obesity and a less severe emphysema in severe COPD patients with obesity.
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Affiliation(s)
- Alexis Dupuis
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
| | - Aurore Thierry
- Université de Reims Champagne-Ardenne, VieFra, CHU Reims, Unité d’Aide Méthodologique, Reims, F-51100, France
| | - Jeanne-Marie Perotin
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
- University of Reims Champagne-Ardenne (URCA), Inserm UMR-S 1250, SFR Cap-Santé, Reims, France
| | - Julien Ancel
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
- University of Reims Champagne-Ardenne (URCA), Inserm UMR-S 1250, SFR Cap-Santé, Reims, France
| | - Valérian Dormoy
- University of Reims Champagne-Ardenne (URCA), Inserm UMR-S 1250, SFR Cap-Santé, Reims, France
| | - Sandra Dury
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
| | - Gaëtan Deslée
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
- University of Reims Champagne-Ardenne (URCA), Inserm UMR-S 1250, SFR Cap-Santé, Reims, France
| | - Claire Launois
- Department of Respiratory Diseases, University Hospital of Reims, Reims, France
- University of Reims Champagne-Ardenne (URCA), Inserm UMR-S 1250, SFR Cap-Santé, Reims, France
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Muršić D, Glunčić TJ, Ostojić J, Škrinjarić-Cincar S, Kardum LB, Dokoza M, Lazarušić NK, Bešić E, Samaržija M, Dugac AV. Body composition, pulmonary function tests, exercise capacity, and quality of life in chronic obstructive pulmonary disease patients with obesity. Postgrad Med J 2024; 100:469-474. [PMID: 38377471 DOI: 10.1093/postmj/qgae024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 01/21/2024] [Accepted: 01/23/2024] [Indexed: 02/22/2024]
Abstract
PURPOSE OF THE STUDY Larger proportions of chronic obstructive pulmonary disease (COPD) patients are currently overweight or with obesity than underweight, and the combination of COPD and obesity is increasing. The purpose of this study was to investigate differences in the body composition, pulmonary function tests, exercise capacity, and health-related quality of life among normal weight, overweight, and obese patients with COPD. STUDY DESIGN A total of 514 patients with COPD were included in the study. According to the World Health Organization criteria for body mass index, the patients were classified as normal weight, overweight, and obese. Evaluations included fat-free mass, fat-free mass index, phase angle, pulmonary function tests, and 6-minute walk test. Dyspnea was assessed using the modified Medical Research Council dyspnea scale, and the health-related quality of life was evaluated using COPD Assessment Test and St. George's Respiratory Questionnaire. Values were compared among the three groups. RESULTS There were 315 male and 199 female patients, with a mean age of 66.7 ± 8.4 years. Fat-free mass, fat-free mass index, and phase angle values were significantly higher in COPD patients with obesity than in other patients (P < .001, P < .001, P < .001). Forced expiratory volume in 1 s, forced expiratory volume in 1 s/forced vital capacity, and diffusing capacity of lung for carbon monoxide value in pulmonary function tests were significantly higher in COPD patients with obesity than in other patients (P = .046, P < .001, P < .001), while the forced vital capacity values were similar in all groups. Exercise capacity (6-min walk test distance), dyspnea symptoms (modified Medical Research Council scale), and health-related quality of life (COPD Assessment Test and St. George's Respiratory Questionnaire) did not differ significantly between groups. CONCLUSIONS According to our study, obesity has no negative effect on pulmonary function tests, dyspnea perception, exercise capacity, and health-related quality of life.
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Affiliation(s)
- Davorka Muršić
- Clinic for Respiratory Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | - Tajana Jalušić Glunčić
- Clinic for Respiratory Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | - Jelena Ostojić
- Clinic for Respiratory Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
| | - Sanda Škrinjarić-Cincar
- Department of Internal Medicine and History of Medicine, Faculty of Medicine, University of Osijek, 31000 Osijek, Croatia
| | | | - Martina Dokoza
- Department of Internal Medicine, Zadar General Hospital, 23000 Zadar, Croatia
| | | | - Erim Bešić
- Department of Biophysics, Faculty of Pharmacy and Biochemistry, University of Zagreb, 10000 Zagreb, Croatia
| | - Miroslav Samaržija
- Clinic for Respiratory Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Andrea Vukić Dugac
- Clinic for Respiratory Diseases Jordanovac, University Hospital Centre Zagreb, 10000 Zagreb, Croatia
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
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Beckmann C, Foster-Witassek F, Brutsche M, Maeder MT, Eberli F, Roffi M, Pedrazzini G, Radovanovic D, Rickli H. Treatment and outcomes of patients with chronic lung disease and acute myocardial infarction: Insights from the nationwide AMIS plus registry. Eur J Clin Invest 2024; 54:e14193. [PMID: 38481088 DOI: 10.1111/eci.14193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 02/25/2024] [Accepted: 02/25/2024] [Indexed: 05/15/2024]
Abstract
BACKGROUND Limited data are available on patients with chronic lung disease (CLD) presenting with acute myocardial infarction (AMI). We aimed to analyse baseline characteristics, treatment and outcome of those patients enrolled in the Swiss nationwide prospective AMIS Plus registry. METHODS All AMI patients enrolled between January 2002 and December 2021 with data on CLD, as defined in the Charlson Comorbidity Index, were included. The primary endpoints were in-hospital mortality and major adverse cardiac and cerebrovascular events (MACCE), defined as all-cause death, reinfarction and cerebrovascular events. Baseline characteristics, in-hospital treatments and outcomes were analysed using descriptive statistics and logistic regression. RESULTS Among 53,680 AMI patients enrolled during this time, 5.8% had CLD. Compared with patients without CLD, CLD patients presented more frequently with non-ST-elevation myocardial infarction (MI) and type 2 MI (12.8% vs. 6.5%, p < 0.001). With respect to treatment, CLD patients were less likely to receive P2Y12 inhibitors (p < 0.001) and less likely to undergo percutaneous coronary interventions (68.7% vs. 82.5%; p < 0.001). In-hospital mortality declined in AMI patients with CLD over time (from 12% in 2002 to 7.3% in 2021). Multivariable regression analysis showed that CLD was an independent predictor for MACCE (adjusted OR was 1.28 [95% CI 1.07-1.52], p = 0.006). CONCLUSION Patients with CLD and AMI were less likely to receive evidence-based pharmacologic treatments, coronary revascularization and had a higher incidence of MACCE during their hospital stay compared to those without CLD. Over 20 years, in-hospital mortality was significantly reduced in AMI patients, especially in those with CLD.
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Affiliation(s)
- C Beckmann
- AMIS Plus Data Center, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - F Foster-Witassek
- AMIS Plus Data Center, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - M Brutsche
- Lung Center, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - M T Maeder
- Department of Cardiology, Kantonsspital St. Gallen, St. Gallen, Switzerland
| | - F Eberli
- Division of Cardiology, Triemli Hospital, Zurich, Switzerland
| | - M Roffi
- Division of Cardiology, Geneva University Hospitals, Geneva, Switzerland
| | - G Pedrazzini
- Department of Cardiology, Cardiocentro Ticino, Lugano, Switzerland
| | - D Radovanovic
- AMIS Plus Data Center, Epidemiology, Biostatistics and Prevention Institute, University of Zurich, Zurich, Switzerland
| | - H Rickli
- Department of Cardiology, Kantonsspital St. Gallen, St. Gallen, Switzerland
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Athanazio RA, Bernal Villada L, Avdeev SN, Wang HC, Ramírez-Venegas A, Sivori M, Dreyse J, Pacheco M, Man SK, Noriega-Aguirre L, Farouk H. Rate of severe exacerbations, healthcare resource utilisation and clinical outcomes in patients with COPD in low-income and middle-income countries: results from the EXACOS International Study. BMJ Open Respir Res 2024; 11:e002101. [PMID: 38637115 PMCID: PMC11029392 DOI: 10.1136/bmjresp-2023-002101] [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: 10/02/2023] [Accepted: 02/16/2024] [Indexed: 04/20/2024] Open
Abstract
INTRODUCTION The EXAcerbations of Chronic obstructive lung disease (COPD) and their OutcomeS (EXACOS) International Study aimed to quantify the rate of severe exacerbations and examine healthcare resource utilisation (HCRU) and clinical outcomes in patients with COPD from low-income and middle-income countries. METHODS EXACOS International was an observational, cross-sectional study with retrospective data collection from medical records for a period of up to 5 years. Data were collected from 12 countries: Argentina, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Guatemala, Hong Kong, Mexico, Panama, Russia and Taiwan. The study population comprised patients ≥40 years of age with COPD. Outcomes/variables included the prevalence of severe exacerbations, the annual rate of severe exacerbations and time between severe exacerbations; change in lung function over time (measured by the forced expiratory volume in 1 s (FEV1)); peripheral blood eosinophil counts (BECs) and the prevalence of comorbidities; treatment patterns; and HCRU. RESULTS In total, 1702 patients were included in the study. The study population had a mean age of 69.7 years, with 69.4% males, and a mean body mass index of 26.4 kg/m2. The mean annual prevalence of severe exacerbations was 20.1%, and 48.4% of patients experienced ≥1 severe exacerbation during the 5-year study period. As the number of severe exacerbations increased, the interval between successive exacerbations decreased. A statistically significant decrease in mean (SD) FEV1 from baseline to post-baseline was observed in patients with ≥1 severe exacerbation (1.23 (0.51) to 1.13 (0.52) L; p=0.0000). Mean BEC was 0.198 x109 cells/L, with 64.7% of patients having a BEC ≥0.1 x109 cells/L and 21.3% having a BEC ≥0.3 x109 cells/L. The most common comorbidity was hypertension (58.3%). An increasing number of severe exacerbations per year was associated with greater HCRU. DISCUSSION The findings presented here indicate that effective treatment strategies to prevent severe exacerbations in patients with COPD remain a significant unmet need in low-income and middle-income countries.
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Affiliation(s)
- Rodrigo Abensur Athanazio
- Pulmonology Division, Heart Institute-InCor-Clinical Hospital, Faculty of Medicine, Universidade de São Paulo, São Paulo, Brazil
| | | | - Sergey N Avdeev
- Department of Pulmonology, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russian Federation
| | - Hao-Chien Wang
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Alejandra Ramírez-Venegas
- Tobacco Smoking and COPD Research Department, Instituto Nacional de Enfermedades Respiratorias Ismael Cosio Villegas, Mexico City, Mexico
| | - Martín Sivori
- Pneumology Unit, Dr J M Ramos Mejía Pulmonology University Center, Faculty of Medicine, University of Buenos Aires, Buenos Aires, Argentina
| | - Jorge Dreyse
- Department of Internal Medicine and Critical Care Center, Clínica Las Condes and School of Medicine Universidad Finis Terrae, Santiago, Chile
| | - Manuel Pacheco
- Internal Medicine Research Group, Universidad Tecnológica de Pereira, Pereira, Colombia
- Fundación Universitaria Visión de las Américas y Respiremos Unidad de Neumología, Pereira, Colombia
| | - Sin Kit Man
- Department of Medicine and Geriatrics, Department of Medicine and Geriatrics, Tuen Mun Hospital, Hong Kong Special Administrative Region (HKSAR), Tuen Mun, People's Republic of China
| | - Lorena Noriega-Aguirre
- Center for Diagnosis and Treatment of Respiratory Diseases (CEDITER), Panama City, Panama
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Alqarni AA, Badr OI, Aldhahir AM, Alqahtani JS, Siraj RA, Naser AY, Alghamdi AS, Majrshi M, Alghamdi SM, Alyami MM, Alghamdi SA, Alwafi H. Obesity Prevalence and Association with Spirometry Profiles, ICU Admission, and Comorbidities Among Patients with COPD: Retrospective Study in Two Tertiary Centres in Saudi Arabia. Int J Chron Obstruct Pulmon Dis 2024; 19:111-120. [PMID: 38249824 PMCID: PMC10799648 DOI: 10.2147/copd.s442851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 01/04/2024] [Indexed: 01/23/2024] Open
Abstract
Background Obesity is common among chronic obstructive pulmonary disease (COPD) patients and is associated with an increase in acute exacerbation episodes. However, data on obesity's impact on and association with clinical outcomes among patients with COPD are limited. This study aimed to determine overweight and obesity prevalence and associations with spirometry profiles, intensive care unit (ICU) admission, and comorbidities in patients with COPD. Methods In this retrospective cohort study, we reviewed the electronic health records of adult individuals diagnosed with COPD who visited the studied pulmonary clinics between 1 January 2018 and 31 December 2022 and then collected key demographic variables and relevant clinical outcomes and comorbidities. Results A total of 474 patients with COPD were included in the final analysis, of whom 60% were male. The occurrences of overweight and obesity were 32.7% and 38.2%, respectively. The presence of comorbidities was high in obese patients (78.4%), followed by overweight patients (63.8%) with COPD. Obese and overweight patients had the highest ward admission rates (38.3% and 34.2%, respectively). ICU admissions were higher in obese and overweight patients (16% and 12%, respectively) compared with normal-weight patients (9%). Although no significant correlation was found between body mass index and spirometry parameters, comorbidities and ICU admission were linked to overweight and obesity in COPD patients (AOR: 1.82 95% CI: 1.15 to 2.86 and AOR: 3.34 95% CI 1.35 to 8.22, respectively). Conclusion Our findings imply that obesity in COPD is prevalent and is associated with adverse clinical outcomes including a greater number of comorbidities and higher rates of hospitalization and admission to ICUs although no associations were found between body weight and spirometry parameters. Further studies are needed to assess whether implementing and optimising obesity screening and management at an early stage in COPD can prevent further deterioration.
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Affiliation(s)
- Abdullah A Alqarni
- Department of Respiratory Therapy, Faculty of Medical Rehabilitation Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Respiratory Therapy Unit, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - Omaima I Badr
- Department of Chest Medicine, Faculty of Medicine, Mansoura University, Mansoura, Egypt
- Department of Pulmonary Medicine, Al Noor Specialist Hospital, Mecca, Saudi Arabia
| | - Abdulelah M Aldhahir
- Respiratory Therapy Department, Faculty of Applied Medical Sciences, Jazan University, Jazan, Saudi Arabia
| | - Jaber S Alqahtani
- Department of Respiratory Care, Prince Sultan Military College of Health Sciences, Dammam, Saudi Arabia
| | - Rayan A Siraj
- Department of Respiratory Care, College of Applied Medical Sciences, King Faisal University, Al Ahsa, Saudi Arabia
| | - Abdallah Y Naser
- Department of Applied Pharmaceutical Sciences and Clinical Pharmacy, Faculty of Pharmacy, Isra University, Amman, Jordan
| | - Abdulrhman S Alghamdi
- Department of Rehabilitation Science, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mansour Majrshi
- National Heart and Lung Institute, Imperial College London, London, UK
- Respiratory Medicine, Royal Brompton Hospital, London, UK
| | - Saeed M Alghamdi
- Clinical Technology Department, Respiratory Care Program, Faculty of Applied Medical Sciences, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mohammed M Alyami
- Respiratory Therapy Department, Batterjee Medical College, Khamis Mushait, Saudi Arabia
| | - Sara A Alghamdi
- Respiratory Care Department, AlSalama Hospital, Jeddah, Saudi Arabia
| | - Hassan Alwafi
- Department of Clinical Pharmacology and Toxicology, Faculty of Medicine, Umm Al-Qura University, Makkah, Saudi Arabia
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Engin A. Adipose Tissue Hypoxia in Obesity: Clinical Reappraisal of Hypoxia Hypothesis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2024; 1460:329-356. [PMID: 39287857 DOI: 10.1007/978-3-031-63657-8_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2024]
Abstract
Obese subjects exhibit lower adipose tissue oxygen consumption in accordance with the lower adipose tissue blood flow. Thereby, compared to lean subjects, obese individuals have almost half lower capillary density and more than half lower vascular endothelial growth factor (VEGF). The VEGF expression together with hypoxia-inducible transcription factor-1 alpha (HIF-1α) activity also requires phosphatidylinositol 3-kinase (PI3K) and mammalian target of rapamycin (mTOR)-mediated signaling. Especially HIF-1α is an important signaling molecule for hypoxia to induce the inflammatory responses. Hypoxia contributes to several biological functions, such as angiogenesis, cell proliferation, apoptosis, inflammation, and insulin resistance (IR). Pathogenesis of obesity-related comorbidities is attributed to intermittent hypoxia (IH), which is mostly observed in visceral obesity. Proinflammatory phenotype of the adipose tissue is a crucial link between IH and the development of IR. Inhibition of adaptive unfolded protein response (UPR) in hypoxia increases β cell death. Moreover, deletion of HIF-1α worsens β cell function. Oxidative stress, as well as the release of proinflammatory cytokines/adipokines in obesity, is proportional to the severity of IH. Reactive oxygen species (ROS) generation at mitochondria is responsible for propagation of the hypoxic signal; however, mitochondrial ROS production is required for hypoxic HIF-1α protein stabilization. Alterations in oxygen availability of adipose tissue directly affect the macrophage polarization and are responsible for the dysregulated adipocytokines production in obesity. Hypoxia both inhibits adipocyte differentiation from preadipocytes and macrophage migration from the hypoxic adipose tissue. Upon reaching a hypertrophic threshold beyond the adipocyte fat loading capacity, excess extracellular matrix (ECM) components are deposited, causing fibrosis. HIF-1α initiates the whole pathological process of fibrosis and inflammation in the obese adipose tissue. In addition to stressed adipocytes, hypoxia contributes to immune cell migration and activation which further aggravates adipose tissue fibrosis. Therefore, targeting HIF-1α might be an efficient way to suppress hypoxia-induced pathological changes in the ECM. The fibrosis score of adipose tissue correlates negatively with the body mass index and metabolic parameters. Inducers of browning/beiging adipocytes and adipokines, as well as modulations of matrix remodeling enzyme inhibitors, and associated gene regulators, are potential pharmacological targets for treating obesity.
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Affiliation(s)
- Atilla Engin
- Faculty of Medicine, Department of General Surgery, Gazi University, Besevler, Ankara, Turkey.
- Mustafa Kemal Mah. 2137. Sok. 8/14, 06520, Cankaya, Ankara, Turkey.
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Benzo MV, Barwise A, Clark MM, Dupuy-McCauley K, Roy M, Benzo RP. Improving Dyspnea by Targeting Weight Loss in Patients With Chronic Obstructive Lung Disease and Severe Obesity Through Health Coaching and Remote Monitoring. CHRONIC OBSTRUCTIVE PULMONARY DISEASES (MIAMI, FLA.) 2023; 10:444-449. [PMID: 37606647 DOI: 10.15326/jcopdf.2023.0404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Affiliation(s)
- Maria V Benzo
- Mindful Breathing Laboratory, Division of Pulmonary, Critical Care and Sleep Medicine, Mayo Clinic, Rochester, Minnesota, United States
| | - Amelia Barwise
- Mindful Breathing Laboratory, Division of Pulmonary, Critical Care and Sleep Medicine, Mayo Clinic, Rochester, Minnesota, United States
| | - Matthew M Clark
- Department of Psychiatry and Psychology, Mayo Clinic, Rochester, Minnesota, United States
| | - Kara Dupuy-McCauley
- Mindful Breathing Laboratory, Division of Pulmonary, Critical Care and Sleep Medicine, Mayo Clinic, Rochester, Minnesota, United States
| | - Madison Roy
- Mindful Breathing Laboratory, Division of Pulmonary, Critical Care and Sleep Medicine, Mayo Clinic, Rochester, Minnesota, United States
| | - Roberto P Benzo
- Mindful Breathing Laboratory, Division of Pulmonary, Critical Care and Sleep Medicine, Mayo Clinic, Rochester, Minnesota, United States
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Bhide P, Bapaye J, Mohan G, Ghose M, Ravilla J, Yarrarapu SNS, Du D. Impact of Obesity on In-Hospital Morbidity and Mortality Among Patients Admitted for Acute Exacerbations of Chronic Obstructive Pulmonary Disease (COPD). Cureus 2023; 15:e35138. [PMID: 36949996 PMCID: PMC10026755 DOI: 10.7759/cureus.35138] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/18/2023] [Indexed: 02/20/2023] Open
Abstract
Background Obesity has been considered to be a risk factor for increased morbidity and mortality among patients with cardiopulmonary diseases. The burden of chronic obstructive pulmonary disease (COPD) and obesity is very high in the United States. We aimed to use the National Inpatient Sample (NIS) to evaluate the impact of obesity on the outcomes of patients hospitalized with COPD exacerbation. Materials & Methods This is a retrospective cohort study from the NIS database involving adult patients hospitalized for COPD exacerbation in the year 2019 obtained using the international classification of diseases, 10th revision coding system (ICD-10). Obese and morbidly obese subgroups were identified. Statistical analyses were done using the Stata software, and regression analysis was performed to calculate odds ratios. Adjusted odds ratios (aOR) were calculated after adjusting for potential confounders. Results Among patients hospitalized for COPD exacerbations, mortality rates were lower among obese and morbidly obese patients; aOR 0.72 [0.65, 0.80] and aOR 0.88 [0.77-0.99], respectively. Obese and morbidly obese were more likely to require non-invasive ventilation aOR 1.63 [1.55, 1.7] and aOR 1.93 [1.85-2.05], respectively, and were more likely to require mechanical ventilation aOR 1.25 [1.19, 1.31], and aOR 1.53 [1.44-1.62], respectively. The tracheostomy rate was 1.17%, 0.83%, and 0.38% among patients with morbid obesity, obesity, and nonobese patients, respectively. Obese (aOR 1.11 [1.07-1.14]) and morbidly obese patients (aOR 1.21 [1.16-1.26]) had higher odds of being discharged on home oxygen and to a skilled nursing facility (SNF), aOR 1.32[1.27-1.38] and aOR 1.37 [1.3-1.43], respectively. Average hospital charges and length of hospitalization were significantly higher for morbidly obese and obese patients as compared to non-obese patients (p < 0.01). Conclusions Among admissions for COPD exacerbation, the rates of non-invasive ventilation, mechanical ventilation, tracheostomy, discharge with supplemental oxygen, length of hospitalization, hospitalization charges, and discharge to an SNF were higher among obese patients representing a higher morbidity and healthcare utilization in this group. This, however, did not translate into increased mortality among obese patients admitted with COPD exacerbations, and further randomized controlled trials are required to confirm our findings.
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Affiliation(s)
- Poorva Bhide
- Internal Medicine, Monmouth Medical Center, Long Branch, USA
| | - Jay Bapaye
- Internal Medicine, Rochester Regional Health, Rochester, USA
| | - Gaurav Mohan
- Internal Medicine, Monmouth Medical Center, Long Branch, USA
| | - Medha Ghose
- Internal Medicine, Monmouth Medical Center, Long Branch, USA
| | | | | | - Doantrang Du
- Internal Medicine, RWJBarnabas Health, Long Branch, USA
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Anti-obesity properties of probiotics; a considerable medical nutrition intervention: Findings from an umbrella meta-analysis. Eur J Pharmacol 2022; 928:175069. [PMID: 35659967 DOI: 10.1016/j.ejphar.2022.175069] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/09/2022] [Accepted: 05/24/2022] [Indexed: 11/22/2022]
Abstract
Although several studies have indicated that consumption of probiotics is effective in the treatment of obesity, the results in this regard have yielded controversial findings. The current umbrella meta-analysis was performed to evaluate the effects of probiotics supplementation on obesity indices in adults. Scopus, PubMed, Web of Science, Embase and Google Scholar were searched for relevant studies published till November 2021. Meta-analysis was conducted using the random-effects model. Sensitivity and subgroup analyses were performed. In total, 29 meta-analyses with 14,366 participants, including 112, 78, and 38 unique trials for body mass index (BMI), body weight (BW), and waist circumference (WC), were included in the study, respectively. The findings demonstrated that the probiotics supplementation was significantly effective on decreasing of BMI (ES = -0.21; 95% CI: -0.30, -0.13, p < 0.001; I2 = 83.0%, p < 0.001), BW (ES = -0.38, 95% CI: -0.60, -0.16; p < 0.001; I2 = 81.8%, p < 0.001), and WC (ES = -0.60; 95% CI: -0.89, -0.31; p < 0.001; I2 = 89.1%, p < 0.001). Greater effects on BW were observed when intervention duration was >8 weeks and on obese individuals. BMI was also greatly modified in participants with metabolic syndrome and when intervention duration lasted for ≥12 weeks. The methodological quality (AMSTAR2) was moderate in 83%, low in 10%, and critically low in 7% of included studies. The current umbrella meta-analysis indicated that supplementation of probiotics in adults led to a meaningful reduction in BW, BMI, and WC. Therefore, our findings strongly recommend supplementation with probiotics as a potent intervention in the management of obesity.
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S Z, B VDB, FJ VDE, JH V, PN D, YF H, PJ V. Adiposity increases weight-bearing exercise-induced dyspnea despite favoring resting lung hyperinflation in COPD. Chron Respir Dis 2022; 19:14799731211052305. [PMID: 35125014 PMCID: PMC8819751 DOI: 10.1177/14799731211052305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objectives Our aim was to study the associations between resting lung hyperinflation, weight-bearing exercise-induced dyspnea and adipose distribution in obese and normal-weight COPD patients. Methods We performed a comparison between 80 obese COPD patients (COPDOB) with 80 age- and FEV1 matched normal-weight COPD patients (COPDNW). Dyspnea was assessed by the mMRC scale and the Borg dyspnea score before and after a 6 min walk test. Further characterization included spirometry, body plethysmography and metronome paced tachypnea (MPT) to estimate dynamic hyperinflation. Body composition was assessed with bioelectrical impedance analysis. Associations between dyspnea scores and BMI and body composition groups were studied using logistic regression models. Results COPDOB patients had attenuated increases in TLC, FRC and RV compared to COPDNW patients ( p < 0.01). The groups had comparable 6 min walking distance and ΔFRC upon MPT ( p > 0.05). Compared to COPDNW, COPDOB patients reported more often a mMRC ≥ 2 (65 vs 46%; p = 0.02; OR 3.0, 95% CI 1.4–6.2, p < 0.01) and had higher ΔBorg upon 6MWT: 2.0 (SEM 0.20) vs. 1.4 (SEM 0.16), p = 0.01; OR for ΔBorg ≥ 2: 2.4, 95% CI 1.1–5.2, p = 0.03. Additional logistic regression analyses on the associations between body composition and dyspnea indicated that increased body fat percentage, fat mass index and waist-to-hip ratio were associated with higher ORs for mMRC ≥ 2 and ΔBorg upon 6MWT ≥ 2. Conclusion Despite its beneficial effect on resting lung hyperinflation, adiposity is associated with increased weight-bearing exercise-induced dyspnea in COPD.
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Affiliation(s)
- Zewari S
- Department of Pulmonary Disease, Rijnstate Hospital, Arnhem, The Netherlands
| | - van den Borst B
- Department of Pulmonary Disease, Radboud University Medical Center, Nijmegen, The Netherlands
| | - van den Elshout FJ
- Department of Pulmonary Disease, Rijnstate Hospital, Arnhem, The Netherlands
| | - Vercoulen JH
- Department of Medical Psychology and Department of Pulmonary Diseases, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Dekhuijzen PN
- Department of Pulmonary Disease, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Heijdra YF
- Department of Pulmonary Disease, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Vos PJ
- Department of Pulmonary Disease, Rijnstate Hospital, Arnhem, The Netherlands
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11
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Putcha N, Anzueto AR, Calverley PMA, Celli BR, Tashkin DP, Metzdorf N, Mueller A, Wise RA. Mortality and Exacerbation Risk by Body Mass Index in Patients with COPD in TIOSPIR and UPLIFT. Ann Am Thorac Soc 2022; 19:204-213. [PMID: 34406915 PMCID: PMC8867355 DOI: 10.1513/annalsats.202006-722oc] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 08/18/2021] [Indexed: 11/25/2022] Open
Abstract
Rationale: There is an association between body mass index (BMI) and mortality in chronic obstructive pulmonary disease (COPD), with underweight individuals having higher mortality risk. Mortality and exacerbation risks among individuals with higher BMI are unclear. Objectives: To examine the relationship between BMI and adverse outcomes in COPD. Methods: This post hoc analysis included data from TIOSPIR (Tiotropium Safety and Performance in Respimat) (N = 17,116) and tiotropium-treated patients in UPLIFT (Understanding Potential Long-term Impacts on Function with Tiotropium) (N = 2,986). BMI classes (underweight [BMI < 20 kg/m2], normal weight [BMI 20 to <25 kg/m2], overweight [BMI 25 to <30 kg/m2], obesity class I [BMI 30 to <35 kg/m2], obesity class II [BMI 35 to <40 kg/m2], and obesity class III [BMI ⩾ 40 kg/m2]) were examined for adjusted associations with mortality, exacerbation, and nonfatal cardiovascular event risk using over 50,000 patient-years of cumulative follow-up data. Hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated using Cox regression models. Results: In TIOSPIR, obesity prevalence was 22%, overweight 32%, and underweight 12%. The proportion of females was highest in obesity classes II and III. Overweight and obese participants had better baseline lung function versus other BMI classes; underweight participants were more likely to be current smokers. Underweight participants had a significantly higher risk of death (HR, 1.88; 95% CI, 1.62-2.20; P < 0.0001) and severe exacerbations (HR, 1.31; 95% CI, 1.16-1.47; P < 0.0001) versus normal-weight participants; however, overweight and obese participants were at lower to no additional risk. Results from UPLIFT were similar to TIOSPIR. Conclusions: These results suggest that there is a strong association between body weight, COPD events, and risk of death. A holistic management approach taking into account respiratory and cardiovascular risk factors and nutritional status is needed to improve the general well-being of patients with COPD.
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Affiliation(s)
- Nirupama Putcha
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Antonio R. Anzueto
- Department of Pulmonary Medicine and Critical Care, University of Texas and South Texas Veterans Health Care System, San Antonio, Texas
| | - Peter M. A. Calverley
- Clinical Science Centre, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
| | | | - Donald P. Tashkin
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
| | - Norbert Metzdorf
- Respiratory Medicine, Boehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany; and
| | - Achim Mueller
- Biostatistics and Data Sciences Europe, Boehringer Ingelheim Pharma GmbH and Company KG, Biberach an der Riss, Germany
| | - Robert A. Wise
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
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12
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Kawamatawong T. Phosphodiesterase-4 Inhibitors for Non-COPD Respiratory Diseases. Front Pharmacol 2021; 12:518345. [PMID: 34434103 PMCID: PMC8381854 DOI: 10.3389/fphar.2021.518345] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 01/04/2021] [Indexed: 12/19/2022] Open
Abstract
Selective phosphodiesterase (PDE) inhibitors are a class of nonsteroid anti-inflammatory drugs for treating chronic inflammatory diseases. Modulation of systemic and airway inflammation is their pivotal mechanism of action. Furthermore, PDE inhibitors modulate cough reflex and inhibit airway mucus secretion. Roflumilast, a selective PDE4 inhibitor, has been extensively studied for the efficacy and safety in chronic obstructive pulmonary disease (COPD) patients. According to the mechanisms of action, the potential roles of PDE inhibitors in treating chronic respiratory diseases including severe asthma, asthma-COPD overlap (ACO), noncystic fibrosis bronchiectasis, and chronic cough are discussed. Since roflumilast inhibits airway eosinophilia and neutrophilia in COPD patients, it reduces COPD exacerbations in the presence of chronic bronchitis in addition to baseline therapies. The clinical studies in asthma patients have shown the comparable efficacy of roflumilast to inhaled corticosteroids for improving lung function. However, the clinical trials of roflumilast in severe asthma have been limited. Although ACO is common and is also associated with poor outcomes, there is no clinical trial regarding its efficacy in patients with ACO despite a promising role in reducing COPD exacerbation. Since mucus hypersecretion is a result of neutrophil secretagogue in patients with chronic bronchitis, experimental studies have shown that PDE4s are regulators of the cystic fibrosis transmembrane conductance regulator (CFTR) in human airway epithelial cells. Besides, goblet cell hyperplasia is associated with an increased expression of PDE. Bronchiectasis and chronic bronchitis are considered neutrophilic airway diseases presenting with mucus hypersecretion. They commonly coexist and thus lead to severe disease. The role of roflumilast in noncystic fibrosis bronchiectasis is under investigation in clinical trials. Lastly, PDE inhibitors have been shown modulating cough from bronchodilation, suppressing transient receptors potential (TRP), and anti-inflammatory properties. Hence, there is the potential role of the drug in the management of unexplained cough. However, clinical trials for examining its antitussive efficacy are pivotal. In conclusion, selective PDE4 inhibitors may be potential treatment options for chronic respiratory diseases apart from COPD due to their promising mechanisms of action.
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Affiliation(s)
- Theerasuk Kawamatawong
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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13
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Ategbole M, Su BB, Wang N, Loudermilk E, Xie X, Acevedo P, Ozuna K, Xu C, Liu Y, Wang K. Gender differences in the associations of early onset poly tobacco and drug use prior to age 18 with the prevalence of adult bronchitis in the United States. J Addict Dis 2021; 39:189-198. [PMID: 33215555 PMCID: PMC8366588 DOI: 10.1080/10550887.2020.1847992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE We investigated the associations of early onset polysubstance use prior to age 18 with the prevalence of bronchitis among U.S. adults and tested whether the associations differ by gender. METHODS A total of 77,950 adults, of them 2,653 with bronchitis in the past year, were from the combined 2013 and 2014 National Survey on Drug Use and Health data. The variable cluster analysis was used to classify nine variables about substance use prior to age 18 (cigarettes, cigars, smokeless tobacco, marijuana, cocaine, heroin, methamphetamines, ecstasy, and phencyclidine). Weighted multivariate logistic regression analysis (MLR) was used to examine the associations with bronchitis. RESULTS Nine variables were divided into two clusters: early onset poly tobacco use (three tobacco use variables) and early onset poly drug use (six drug use variables). The overall prevalence of bronchitis was 3.8% (5.1% for females and 2.3% for males). MLR analysis showed that being female, elderly (ages 65 and above), obese, and early onset poly tobacco use were associated with increased odds of bronchitis (p < 0.05). Gender-stratified analyses showed that early-onset poly tobacco use was significantly associated with bronchitis only in males, whereas early onset poly drug use was associated with bronchitis only in females. Moreover, obesity and tobacco use in the past year revealed associations with bronchitis regardless of gender. CONCLUSIONS Obesity, early onset poly tobacco use prior to age 18, and tobacco use in the past year were positively associated with bronchitis; furthermore, the associations of early onset polysubstance use with bronchitis differed by gender, which indicated that gender differences should be considered in developing effective prevention strategies.
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Affiliation(s)
- Muyiwa Ategbole
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, TN, USA
| | - Brenda Bin Su
- Department of Health and Biomedical Science, College of Health Affairs, University of Texas Rio Grande Valley, TX, USA
| | - Nianyang Wang
- Department of Health Policy and Management, School of Public Health, University of Maryland, College Park, MD, USA
| | - Elaine Loudermilk
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, TN, USA
| | - Xin Xie
- Department of Economics and Finance, College of Business and Technology, East Tennessee State University, Johnson City, TN, USA
| | - Priscila Acevedo
- Department of Health and Biomedical Science, College of Health Affairs, University of Texas Rio Grande Valley, TX, USA
| | - Kaysie Ozuna
- Department of Health and Biomedical Science, College of Health Affairs, University of Texas Rio Grande Valley, TX, USA
| | - Chun Xu
- Department of Health and Biomedical Science, College of Health Affairs, University of Texas Rio Grande Valley, TX, USA
| | - Ying Liu
- Department of Biostatistics and Epidemiology, College of Public Health, East Tennessee State University, Johnson City, TN, USA
| | - Kesheng Wang
- Department of Family and Community Health, School of Nursing, Health Sciences Center, West Virginia University, Morgantown, WV, USA
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Effect of BMI on health care expenditures stratified by COPD GOLD severity grades: Results from the LQ-DMP study. Respir Med 2020; 175:106194. [PMID: 33166903 DOI: 10.1016/j.rmed.2020.106194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/11/2022]
Abstract
Chronic Obstructive Pulmonary Disease (COPD) is characterized by persistent respiratory symptoms and airflow limitation, which is progressive and not fully reversible. In patients with COPD, body mass index (BMI) is an important parameter associated with health outcomes, e.g. mortality and health-related quality of life. However, so far no study evaluated the association of BMI and health care expenditures across different COPD severity grades. We used claims data and documentation data of a Disease Management Program (DMP) from a statutory health insurance fund (AOK Bayern). Patients were excluded if they had less than 4 observations in the 8 years observational period. Generalized additive mixed models with smooth functions were used to evaluate the association between BMI and health care expenditures, stratified by severity of COPD, indicated by GOLD grades 1-4. We included 30,682 patients with overall 188,725 observations. In GOLD grades 1-3 we found an u-shaped relation of BMI and expenditures, where patients with a BMI of 30 or slightly above had the lowest and underweight and obese patients had the highest health care expenditures. Contrarily, in GOLD grade 4 we found an almost linear decline of health care expenditures with increasing BMI. In terms of expenditures, the often reported obesity paradox in patients with COPD was clearly reflected in GOLD grade 4, while in all other severity grades underweight as well as severely obese patients caused the highest health care expenditures. Reduction of obesity may thus reduce health care expenditures in GOLD grades 1-3.
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15
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Huber MB, Kurz C, Kirsch F, Schwarzkopf L, Schramm A, Leidl R. The relationship between body mass index and health-related quality of life in COPD: real-world evidence based on claims and survey data. Respir Res 2020; 21:291. [PMID: 33143706 PMCID: PMC7607880 DOI: 10.1186/s12931-020-01556-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 10/22/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Body mass index (BMI) is an important parameter associated with mortality and health-related quality of life (HRQoL) in chronic obstructive pulmonary disease (COPD). However, informed guidance on stratified weight recommendations for COPD is still lacking. This study aims to determine the association between BMI and HRQoL across different severity grades of COPD to support patient management. METHODS We use conjunct analysis of claims and survey data based on a German COPD disease management program from 2016 to 2017. The EQ-5D-5L visual analog scale (VAS) and COPD Assessment Test (CAT) are used to measure generic and disease-specific HRQoL. Generalized additive models with smooth functions are implemented to evaluate the relationship between BMI and HRQoL, stratified by COPD severity. RESULTS 11,577 patients were included in this study. Mean age was 69.4 years and 59% of patients were male. In GOLD grades 1-3, patients with BMI of around 25 had the best generic and disease-specific HRQoL, whereas in GOLD grade 4, obese patients had the best HRQoL using both instruments when controlled for several variables including smoking status, income, COPD severity, comorbidities, emphysema, corticosteroid use, and days spent in hospital. CONCLUSION This real-world analysis shows the non-linear relationship between BMI and HRQoL in COPD. HRQoL of obese patients with mild to severe COPD might improve following weight reduction. For very severe COPD, a negative association of obesity and HRQoL could not be confirmed. The results hint at the need to stratify COPD patients by disease stage for optimal BMI management.
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Affiliation(s)
- Manuel B Huber
- Institute of Health Economics and Health Care Management, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764, Neuherberg, Germany.
| | - Christoph Kurz
- Institute of Health Economics and Health Care Management, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764, Neuherberg, Germany
| | - Florian Kirsch
- Institute of Health Economics and Health Care Management, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764, Neuherberg, Germany
- Munich School of Management and Munich Center of Health Sciences, Ludwig-Maximilians-Universität, Munich, Germany
| | - Larissa Schwarzkopf
- Institute of Health Economics and Health Care Management, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764, Neuherberg, Germany
- Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Neuherberg, Germany
- IFT-Institute Fuer Therapieforschung, Working Group Therapy and Health Services Research, Munich, Germany
| | - Anja Schramm
- AOK Bayern, Service Center of Health Care Management, Regensburg, Germany
| | - Reiner Leidl
- Institute of Health Economics and Health Care Management, Helmholtz Zentrum München, Ingolstädter Landstraße 1, 85764, Neuherberg, Germany
- Munich School of Management and Munich Center of Health Sciences, Ludwig-Maximilians-Universität, Munich, Germany
- Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL), Neuherberg, Germany
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16
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Rocha T, Rattes C, Morais C, Souza R, Rolim N, Brandão S, Fink JB, Dornelas de Andrade A. Predictive anatomical factors of lung aerosol deposition in obese individuals. Would modified mallampati score be relevant? Clinical trial. Respir Med 2020; 171:106083. [PMID: 32917355 DOI: 10.1016/j.rmed.2020.106083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 05/13/2020] [Accepted: 07/03/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Obesity is a highly prevalent condition worldwide that aggravates symptoms of already existing conditions such as asthma and COPD. The limited effectiveness of inhaled medications in these individuals may be related to anatomic characteristics of their upper airways, mainly due to compressive factors. METHODS Controlled clinical trial with obese and nonobese individuals. The following variables were evaluated: anthropometric characteristics, Lung and airway deposition of radiolabeled aerosol (pulmonary scintigraphy), upper airways anatomy (CT scans), and modified Mallampati score. RESULTS 29 subjects (17 nonobese and 12 obese) participated. Obese volunteers presented 30% lower aerosol lung deposition compared to nonobese. Moreover, obese subjects Mallampati classification of 4 presented an aerosol lung deposition two times lower than nonobese subjects (p = 0.021). The cross-sectional area of the retropalatal region and retroglossal region were lower in obese patients (p < 0.05), but no correlation to aerosol lung deposition was observed. BMI was associated with 32% of the variance of lung deposition (p < 0.001; β -0.28; 95% CI -0.43 to -0.11). CONCLUSION High BMI correlated to reduced percentage lung deposition. Also, modified Mallampati class 4 was even more detrimental to aerosol delivery into the lungs. Obese subjects have narrower upper airways, compared to nonobese, but this is not reflected in higher radiolabeled aerosol impaction into their oropharynx and does not predict the percentage of lung deposition in this group. CLINICAL TRIAL REGISTRATION NCT03031093 (clinicaltrials.org).
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Affiliation(s)
- Taciano Rocha
- Department of Physiotherapy, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - Catarina Rattes
- Department of Physiotherapy, Universidade Federal de Pernambuco, Recife, Brazil
| | - Caio Morais
- Department of Pneumology, Universidade de São Paulo, São Paulo, Brazil
| | - Renata Souza
- Department of Physiotherapy, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - Nadja Rolim
- Imaging Medicine, Hospital das Clínicas da UFPE, Universidade Federal de Pernambuco, Recife, Brazil
| | - Simone Brandão
- Department of Nuclear Medicine, Hospital das Clínicas da UFPE, Recife, Brazil
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DeLapp DA, Glick C, Furmanek S, Ramirez JA, Cavallazzi R. Patients with Obesity Have Better Long-Term Outcomes after Hospitalization for COPD Exacerbation. COPD 2020; 17:373-377. [PMID: 32586139 DOI: 10.1080/15412555.2020.1781805] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Obesity has been shown to have a paradoxical benefit in a number of conditions, but the long-term effects in obesity after chronic obstructive pulmonary disease (COPD) exacerbation is still unclear. In this study, the effects of obesity on short- and long-term outcomes after a COPD exacerbation were evaluated. This was a secondary analysis of the Rapid Empiric Treatment with Oseltamivir Study (RETOS): a prospective, randomized, unblinded clinical trial. Patients were included in the study if they were hospitalized for acute exacerbation of COPD. Obesity was noted as patients with BMI >30. Clinical outcomes of time to clinical stability, length of stay, and mortality were compared. A total of 301 patients were included in the study, 122 (41%) patients were obese. There was no significant difference in the length of stay and time to clinical stability between patients with and without obesity. Mortality for patients with and without obesity was 3% and 3% at 30 days, 7% and 18% at six months, and 8% and 28% at one year, respectively. After adjusting with multivariable regression analysis, patients with obesity had a significant reduction in odds of dying at one year (adjusted odds ratio (aOR): 0.18; 95% CI: 0.06-0.58; p = .004) and at six months (aOR: 0.28; 95% CI: 0.09-0.89; p = .031). Our study showed that obesity was associated with reduced mortality at one year and six months after a COPD exacerbation. Although patients with obesity had higher rates of comorbidities, they had reduced mortality at one year after multivariable regression analysis.
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Affiliation(s)
- David A DeLapp
- Department of Medicine, Division of Pulmonary, Critical Care, and Sleep Disorders Medicine, University of Louisville School of Medicine, Louisville, KY, USA
| | - Connor Glick
- Department of Medicine, Division of Infectious Diseases, University of Louisville School of Medicine, Louisville, KY, USA
| | - Stephen Furmanek
- Department of Medicine, Division of Infectious Diseases, University of Louisville School of Medicine, Louisville, KY, USA
| | - Julio A Ramirez
- Department of Medicine, Division of Infectious Diseases, University of Louisville School of Medicine, Louisville, KY, USA
| | - Rodrigo Cavallazzi
- Department of Medicine, Division of Pulmonary, Critical Care, and Sleep Disorders Medicine, University of Louisville School of Medicine, Louisville, KY, USA
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Recio Iglesias J, Díez-Manglano J, López García F, Díaz Peromingo JA, Almagro P, Varela Aguilar JM. Management of the COPD Patient with Comorbidities: An Experts Recommendation Document. Int J Chron Obstruct Pulmon Dis 2020; 15:1015-1037. [PMID: 32440113 PMCID: PMC7217705 DOI: 10.2147/copd.s242009] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 03/10/2020] [Indexed: 12/11/2022] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is associated with multiple comorbidities, which impact negatively on patients and are often underdiagnosed, thus lacking a proper management due to the absence of clear guidelines. Purpose To elaborate expert recommendations aimed to help healthcare professionals to provide the right care for treating COPD patients with comorbidities. Methods A modified RAND-UCLA appropriateness method consisting of nominal groups to draw up consensus recommendations (6 Spanish experts) and 2-Delphi rounds to validate them (23 Spanish experts) was performed. Results A panel of Spanish internal medicine experts reached consensus on 73 recommendations and 81 conclusions on the clinical consequences of the presence of comorbidities. In general, the experts reached consensus on the issues raised with regard to cardiovascular comorbidity and metabolic disorders. Consensus was reached on the use of selective serotonin reuptake inhibitors in cases of depression and the usefulness of referring patients with anxiety to respiratory rehabilitation programmes. The results also showed consensus on the usefulness of investigating the quality of sleep, the treatment of pain with opioids and the evaluation of osteoporosis by lateral chest radiography. Conclusion This study provides conclusions and recommendations that are intended to improve the management of the complexity of patients with COPD and important comorbidities, usually excluded from clinical trials.
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Affiliation(s)
- Jesús Recio Iglesias
- Internal Medicine Department, Quironsalud Valencia Hospital, Valencia, Valencian Community, Spain
| | - Jesús Díez-Manglano
- Internal Medicine Department, Royo Villanova Hospital, Zaragoza, Aragon, Spain
| | - Francisco López García
- Internal Medicine Department General University Hospital of Elche, Alicante, Valencian Community, Spain
| | - José Antonio Díaz Peromingo
- Internal Medicine Department, University Clinical Hospital of Santiago de Compostela, a Coruña, Galicia, Spain
| | - Pere Almagro
- Internal Medicine Department, Mútua Terrassa University Hospital, Terrassa, Barcelona, Catalonia, Spain
| | - José Manuel Varela Aguilar
- Internal Medicine Department, University Hospital Virgen del Rocío, Seville, Andalusia, Spain
- CIBER of Epidemiology and Public Health, Madrid, Community of Madrid, Spain
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Pakhomova AV, Pershina OV, Ermakova NN, Krupin VA, Pan ES, Putrova OD, Khmelevskaya ES, Vaizova OE, Pozdeeva AS, Dygai AM, Skurikhin EG. Pericytes and Smooth Muscle Cells Circulating in the Blood as Markers of Impaired Angiogenesis during Combined Metabolic Impairments and Lung Emphysema. Bull Exp Biol Med 2020; 168:334-340. [PMID: 31940128 DOI: 10.1007/s10517-020-04703-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Indexed: 12/21/2022]
Abstract
The changes in endothelial progenitor cells and progenitor cells of angiogenesis, pericytes and smooth muscle cells, were studied in female C57BL/6 mice with a combination of metabolic impairments induced by injections of sodium glutamate and lung emphysema modeled by the administration of cigarette smoke extract. It was observed that sodium glutamate significantly enhances pathological changes in the lungs (inflammation and lung emphysema) induced by the administration of cigarette smoke extract. Recruiting of endothelial progenitor cells (CD45-CD31+CD34+ and CD31+CD34+CD146-) and progenitor cells of angiogenesis (CD45-CD117+CD309+) was registered in the injured lungs. Angiogenesis impairment induced by combined exposure is related to altered migration of pericytes (CD31-CD34-CD146+) and smooth muscle cells (CD31-CD34+CD146+) in emphysema-like enlarged lung tissue.
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Affiliation(s)
- A V Pakhomova
- Laboratory of Regenerative Pharmacology, E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Tomsk, Russia
| | - O V Pershina
- Laboratory of Regenerative Pharmacology, E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Tomsk, Russia
| | - N N Ermakova
- Laboratory of Regenerative Pharmacology, E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Tomsk, Russia
| | - V A Krupin
- Laboratory of Regenerative Pharmacology, E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Tomsk, Russia
| | - E S Pan
- Laboratory of Regenerative Pharmacology, E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Tomsk, Russia
| | - O D Putrova
- Laboratory of Regenerative Pharmacology, E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Tomsk, Russia
| | - E S Khmelevskaya
- Laboratory of Regenerative Pharmacology, E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Tomsk, Russia
| | - O E Vaizova
- Department of Pharmacology, Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia
| | - A S Pozdeeva
- Department of Pharmacology, Siberian State Medical University, Ministry of Health of the Russian Federation, Tomsk, Russia
| | - A M Dygai
- Laboratory of Regenerative Pharmacology, E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Tomsk, Russia
| | - E G Skurikhin
- Laboratory of Regenerative Pharmacology, E. D. Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Tomsk, Russia.
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Viglino D, Martin M, Almeras N, Després JP, Coxson HO, Pépin JL, Vivodtzev I, Maltais F. Low Liver Density Is Linked to Cardiovascular Comorbidity in COPD: An ECLIPSE Cohort Analysis. Int J Chron Obstruct Pulmon Dis 2019; 14:3053-3061. [PMID: 32099343 PMCID: PMC6997198 DOI: 10.2147/copd.s233834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 12/17/2019] [Indexed: 12/13/2022] Open
Abstract
Purpose Fatty liver disease is associated with cardiometabolic disorders and represents a potential key comorbidity in Chronic Obstructive Pulmonary Disease (COPD). Some intermediary mechanisms of fatty liver disease (including its histological component steatosis) include tissue hypoxia, low-grade inflammation and oxidative stress that are key features of COPD. Despite these shared physiological pathways, the effect of COPD on the prevalence of hepatic steatosis, and the association between hepatic steatosis and comorbidities in this population remain unclear. Liver density measured by computed tomography (CT)-scan is a non-invasive surrogate of fat infiltration, with lower liver densities reflecting more fat infiltration and a liver density of 40 Hounsfield Units (HU) corresponding to a severe 30% fat infiltration. Patients and Methods We took advantage of the international cohort ECLIPSE in which non-enhanced chest CT-scans were obtained in 1554 patients with COPD and 387 healthy controls to analyse the liver density at T12-L1. Results The distribution of liver density was similar and the prevalence of severe steatosis (density<40 HU) was not different (4.7% vs 5.2%, p=0.7) between COPD and controls. In patients with COPD, the lowest liver density quartile was associated, after age and sex adjustment, with coronary artery disease (ORa=1.59, 95% CI 1.12 to 2.24) and stroke (ORa=2.20, 95% CI 1.07 to 4.50), in comparison with the highest liver density quartile. Conclusion The present data indicate that a low liver density emerged as a predictor of cardiovascular comorbidities in the COPD population. However, the distribution of liver density and the prevalence of severe steatosis were similar in patients with COPD and control subjects.
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Affiliation(s)
- Damien Viglino
- Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec-Université Laval, Québec, Canada.,Hypoxia Pathophysiology Laboratory INSERM U1042, Grenoble Alpes University Hospital, Grenoble, France
| | - Mickaël Martin
- Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec-Université Laval, Québec, Canada
| | - Natalie Almeras
- Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec-Université Laval, Québec, Canada
| | - Jean-Pierre Després
- Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec-Université Laval, Québec, Canada
| | - Harvey O Coxson
- Radiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jean-Louis Pépin
- Hypoxia Pathophysiology Laboratory INSERM U1042, Grenoble Alpes University Hospital, Grenoble, France
| | - Isabelle Vivodtzev
- Hypoxia Pathophysiology Laboratory INSERM U1042, Grenoble Alpes University Hospital, Grenoble, France
| | - François Maltais
- Centre de Recherche, Institut Universitaire de Cardiologie et de Pneumologie de Québec-Université Laval, Québec, Canada
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21
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Gender Differences in the Pharmacological Actions of Pegylated Glucagon-Like Peptide-1 on Endothelial Progenitor Cells and Angiogenic Precursor Cells in a Combination of Metabolic Disorders and Lung Emphysema. Int J Mol Sci 2019; 20:ijms20215414. [PMID: 31671663 PMCID: PMC6862381 DOI: 10.3390/ijms20215414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/20/2019] [Accepted: 10/27/2019] [Indexed: 02/06/2023] Open
Abstract
In clinical practice, the metabolic syndrome (MetS) is often associated with chronic obstructive pulmonary disease (COPD). Although gender differences in MetS are well documented, little is known about sex-specific differences in the pathogenesis of COPD, especially when combined with MetS. Consequently, it is not clear whether the same treatment regime has comparable efficacy in men and women diagnosed with MetS and COPD. In the present study, using sodium glutamate, lipopolysaccharide, and cigarette smoke extract, we simulated lipid metabolism disorders, obesity, hyperglycemia, and pulmonary emphysema (comorbidity) in male and female C57BL/6 mice. We assessed the gender-specific impact of lipid metabolism disorders and pulmonary emphysema on angiogenic precursor cells (endothelial progenitor cells (EPC), pericytes, vascular smooth muscle cells, cells of the lumen of the nascent vessel), as well as the biological effects of pegylated glucagon-like peptide 1 (pegGLP-1) in this experimental paradigm. Simulation of MetS/COPD comorbidity caused an accumulation of EPC (CD45−CD31+CD34+), pericytes, and vascular smooth muscle cells in the lungs of female mice. In contrast, the number of cells involved in the angiogenesis decreased in the lungs of male animals. PegGLP-1 had a positive effect on lipids and area under the curve (AUC), obesity, and prevented the development of pulmonary emphysema. The severity of these effects was stronger in males than in females. Furthermore, PegGLP-1 stimulated regeneration of pulmonary endothelium. At the same time, PegGLP-1 administration caused a mobilization of EPC (CD45−CD31+CD34+) into the bloodstream in females and migration of precursors of angiogenesis and vascular smooth muscle cells to the lungs in male animals. Gender differences in stimulatory action of pegGLP-1 on CD31+ endothelial lung cells in vitro were not observed. Based on these findings, we postulated that the cellular mechanism of in vivo regeneration of lung epithelium was at least partly gender-specific. Thus, we concluded that a pegGLP-1-based treatment regime for metabolic disorder and COPD should be further developed primarily for male patients.
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22
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Ozretić P, da Silva Filho MI, Catalano C, Sokolović I, Vukić-Dugac A, Šutić M, Kurtović M, Bubanović G, Popović-Grle S, Skrinjarić-Cincar S, Vugrek O, Jukić I, Rumora L, Bosnar M, Samaržija M, Bals R, Jakopović M, Försti A, Knežević J. Association of NLRP1 Coding Polymorphism with Lung Function and Serum IL-1β Concentration in Patients Diagnosed with Chronic Obstructive Pulmonary Disease (COPD). Genes (Basel) 2019; 10:genes10100783. [PMID: 31601004 PMCID: PMC6826440 DOI: 10.3390/genes10100783] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 09/05/2019] [Accepted: 10/01/2019] [Indexed: 02/06/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a chronic disease characterized by a progressive decline in lung function due to airflow limitation, mainly related to IL-1β-induced inflammation. We have hypothesized that single nucleotide polymorphisms (SNPs) in NLRP genes, coding for key regulators of IL-1β, are associated with pathogenesis and clinical phenotypes of COPD. We recruited 704 COPD individuals and 1238 healthy controls for this study. Twenty non-synonymous SNPs in 10 different NLRP genes were genotyped. Genetic associations were estimated using logistic regression, adjusting for age, gender, and smoking history. The impact of genotypes on patients' overall survival was analyzed with the Kaplan-Meier method with the log-rank test. Serum IL-1β concentration was determined by high sensitivity assay and expression analysis was done by RT-PCR. Decreased lung function, measured by a forced expiratory volume in 1 s (FEV1% predicted), was significantly associated with the minor allele genotypes (AT + TT) of NLRP1 rs12150220 (p = 0.0002). The same rs12150220 genotypes exhibited a higher level of serum IL-1β compared to the AA genotype (p = 0.027) in COPD patients. NLRP8 rs306481 minor allele genotypes (AG + AA) were more common in the Global Initiative for Chronic Obstructive Lung Disease (GOLD) definition of group A (p = 0.0083). Polymorphisms in NLRP1 (rs12150220; OR = 0.55, p = 0.03) and NLRP4 (rs12462372; OR = 0.36, p = 0.03) were only nominally associated with COPD risk. In conclusion, coding polymorphisms in NLRP1 rs12150220 show an association with COPD disease severity, indicating that the fine-tuning of the NLRP1 inflammasome could be important in maintaining lung tissue integrity and treating the chronic inflammation of airways.
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Affiliation(s)
- Petar Ozretić
- Ruđer Bošković Institute, Division of Molecular Medicine, 10 000 Zagreb, Croatia.
| | | | - Calogerina Catalano
- Division of Molecular Genetic Epidemiology, DKFZ, 69 120 Heidelberg, Germany.
| | - Irena Sokolović
- Department for Respiratory Diseases Jordanovac, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia.
| | - Andrea Vukić-Dugac
- Department for Respiratory Diseases Jordanovac, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia.
| | - Maja Šutić
- Ruđer Bošković Institute, Division of Molecular Medicine, 10 000 Zagreb, Croatia.
| | - Matea Kurtović
- Ruđer Bošković Institute, Division of Molecular Medicine, 10 000 Zagreb, Croatia.
| | - Gordana Bubanović
- Department for Respiratory Diseases Jordanovac, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia.
| | - Sanja Popović-Grle
- Department for Respiratory Diseases Jordanovac, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia.
| | - Sanda Skrinjarić-Cincar
- Josip Juraj Strossmayer University of Osijek, School of Medicine, 31 000 Osijek, Croatia.
- Department of Pulmology, Universitiy Hospital Center Osijek, 31 000 Osijek, Croatia.
| | - Oliver Vugrek
- Ruđer Bošković Institute, Division of Molecular Medicine, 10 000 Zagreb, Croatia.
| | - Irena Jukić
- Croatian Institute of Transfusion Medicine, 10 000 Zagreb, Croatia.
| | - Lada Rumora
- Department of Medical Biochemistry and Hematology, Faculty of Pharmacy and Biochemistry, University of Zagreb, 10 000 Zagreb, Croatia.
| | - Martina Bosnar
- Fidelta d.o.o., Prilaz baruna Filipovića 29, 10 000 Zagreb, Croatia.
| | - Miroslav Samaržija
- Department for Respiratory Diseases Jordanovac, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia.
| | - Robert Bals
- Department of Internal Medicine V-Pulmonology, Allergology, Intensive Care Medicine, Saarland University, 66 424 Homburg, Germany.
| | - Marko Jakopović
- Department for Respiratory Diseases Jordanovac, University of Zagreb School of Medicine, University Hospital Centre Zagreb, 10 000 Zagreb, Croatia.
| | - Asta Försti
- Division of Molecular Genetic Epidemiology, DKFZ, 69 120 Heidelberg, Germany.
| | - Jelena Knežević
- Ruđer Bošković Institute, Division of Molecular Medicine, 10 000 Zagreb, Croatia.
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Budnevsky AV, Ovsyannikov ES, Labzhania NB. [Chronic obstructive pulmonary disease concurrent with metabolic syndrome: Pathophysiological and clinical features]. TERAPEVT ARKH 2019. [PMID: 28635909 DOI: 10.17116/terarkh2017891123-127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) still remains a serious public health problem, which is a common cause of disability and death in the able-bodied population. Furthermore, the number of patients with metabolic syndrome (MS) is steadily increasing worldwide. Recently, there is also an increase in the number of patients with COPD concurrent with MS, which is a mutually confounding risk factor for concomitant cardiovascular disease and adversely affects prognosis in these patients. Systemic subclinical inflammation is a common link between COPD and the components of MS. Systemic inflammation in patients with comorbidity is complemented by an inflammatory process in the abdominal visceral adipose tissue that serves as a source of proinflammatory adipokines (leptin, resistin, and tumor necrosis factor-α). Patients with COPD in the presence of MS components have in general higher ventilation needs, more obvious clinical manifestations of bronchopulmonary diseases, and more frequent COPD exacerbations and frequently require higher doses of inhaled glucocorticosteroids. As compared with normal-weight patients with COPD, obese patients with this condition have more limited physical activity and much more exercise intolerance. There are currently no practical recommendations for the management of patients with comorbidity; patients with COPD concurrent with MS need an individual therapeutic approach. It is important to elaborate a package of preventive measures to improve quality of life in patients, to reduce the incidence of systemic complications, and to achieve symptomatic improvements. Thus, to develop and implement practical guidelines for physicians and patients are an urgent issue.
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Affiliation(s)
- A V Budnevsky
- N.N. Burdenko Voronezh State Medical University, Ministry of Health of Russia, Voronezh, Russia
| | - E S Ovsyannikov
- N.N. Burdenko Voronezh State Medical University, Ministry of Health of Russia, Voronezh, Russia
| | - N B Labzhania
- N.N. Burdenko Voronezh State Medical University, Ministry of Health of Russia, Voronezh, Russia
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24
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Skurikhin EG, Pershina OV, Pakhomova AV, Pan ES, Krupin VA, Ermakova NN, Vaizova OE, Pozdeeva AS, Zhukova MA, Skurikhina VE, Grimm WD, Dygai AM. Endothelial Progenitor Cells as Pathogenetic and Diagnostic Factors, and Potential Targets for GLP-1 in Combination with Metabolic Syndrome and Chronic Obstructive Pulmonary Disease. Int J Mol Sci 2019; 20:ijms20051105. [PMID: 30836679 PMCID: PMC6429267 DOI: 10.3390/ijms20051105] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 02/26/2019] [Accepted: 02/27/2019] [Indexed: 12/16/2022] Open
Abstract
In clinical practice, there are patients with a combination of metabolic syndrome (MS) and chronic obstructive pulmonary disease (COPD). The pathological mechanisms linking MS and COPD are largely unknown. It remains unclear whether the effect of MS (possible obesity) has a major impact on the progression of COPD. This complicates the development of effective approaches for the treatment of patients with a diagnosis of MS and COPD. Experiments were performed on female C57BL/6 mice. Introduction of monosodium glutamate and extract of cigarette smoke was modeled to simulate the combined pathology of lipid disorders and emphysema. Biological effects of glucagon-like peptide 1 (GLP-1) and GLP-1 on endothelial progenitor cells (EPC) in vitro and in vivo were evaluated. Histological, immunohistochemical methods, biochemical methods, cytometric analysis of markers identifying EPC were used in the study. The CD31⁺ endothelial cells in vitro evaluation was produced by Flow Cytometry and Image Processing of each well with a Cytation™ 3. GLP-1 reduces the area of emphysema and increases the number of CD31⁺ endothelial cells in the lungs of mice in conditions of dyslipidemia and damage to alveolar tissue of cigarette smoke extract. The regenerative effects of GLP-1 are caused by a decrease in inflammation, a positive effect on lipid metabolism and glucose metabolism. EPC are proposed as pathogenetic and diagnostic markers of endothelial disorders in combination of MS with COPD. Based on GLP-1, it is proposed to create a drug to stimulate the regeneration of endothelium damaged in MS and COPD.
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Affiliation(s)
- Evgenii Germanovich Skurikhin
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk 634028, Russia.
| | - Olga Victorovna Pershina
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk 634028, Russia.
| | - Angelina Vladimirovna Pakhomova
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk 634028, Russia.
| | - Edgar Sergeevich Pan
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk 634028, Russia.
| | - Vyacheslav Andreevich Krupin
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk 634028, Russia.
| | - Natalia Nicolaevna Ermakova
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk 634028, Russia.
| | | | | | | | | | - Wolf-Dieter Grimm
- Periodontology, Department of Dental Medicine, Faculty of Health, University of Witten/Herdecke, 355035 Stavropol, Germany.
| | - Alexander Mikhaylovich Dygai
- Laboratory of Regenerative Pharmacology, Goldberg ED Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Centre of the Russian Academy of Sciences, Tomsk 634028, Russia.
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25
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Figueira Gonçalves JM, Martín Martínez MD, Pérez Méndez LI, García Bello MÁ, Garcia-Talavera I, Hernández SG, Díaz Pérez D, Bethencourt Martín N. Health Status in Patients with COPD According to GOLD 2017 Classification: Use of the COMCOLD Score in Routine Clinical Practice. COPD 2018; 15:326-333. [DOI: 10.1080/15412555.2018.1531388] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | | | | | | | | | - Sara García Hernández
- Hospital Universitario Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Spain
| | - David Díaz Pérez
- Hospital Universitario Nuestra Señora de la Candelaria, Santa Cruz de Tenerife, Spain
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26
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Jo YS, Kim YH, Lee JY, Kim K, Jung KS, Yoo KH, Rhee CK. Impact of BMI on exacerbation and medical care expenses in subjects with mild to moderate airflow obstruction. Int J Chron Obstruct Pulmon Dis 2018; 13:2261-2269. [PMID: 30100716 PMCID: PMC6067770 DOI: 10.2147/copd.s163000] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background and objective The rate of obesity is increasing in Asia, but the clinical impact of body mass index (BMI) on the outcome of chronic obstructive pulmonary disease (COPD) remains unknown. We aimed to assess this impact while focusing on the risk of exacerbation, health-care utilization, and medical costs. Methods We examined 43,864 subjects registered in the Korean National Health and Nutrition Examination Survey (KNHANES) database from 2007 to 2012, and linked the data of COPD patients who had mild to moderate airflow obstruction (n = 1,320) to National Health Insurance (NHI) data. COPD was confirmed by spirometry. BMI was used to stratify patients into four categories: underweight (BMI <18.5 kg/m2), normal range (18.5–22.9 kg/m2), overweight (23–24.9 kg/m2), and obese (≥25 kg/m2). Results Of the 1,320 patients with COPD with mild to moderate airflow obstruction, 27.8% had a BMI ≥25 kg/m2. Compared with normal-weight patients, obese patients tended to experience fewer exacerbations (incidence rate ratio [IRR] 0.88; 95% CI 0.77–0.99; P = 0.04), although this association was not significant in a multivariable analysis. COPD-related health-care utilization and medical expenses were higher among underweight patients than the other groups. After adjustment, the risk of COPD-related hospitalization was highest among underweight and higher among overweight patients vs normal-weight patients (adjusted IRRs: 7.12, 1.00, 1.26, and 1.02 for underweight, normal, overweight, and obese groups, respectively; P = 0.01). Conclusion Decreased weight tends to negatively influence prognosis of COPD with mild to moderate airflow obstruction, whereas higher BMI was not significantly related to worse outcomes.
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Affiliation(s)
- Yong Suk Jo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Kyung Hee University Hospital, Seoul, Republic of Korea
| | - Yee Hyung Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Republic of Korea
| | - Jung Yeon Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Konkuk University Chungju Hospital, Chungju, Republic of Korea
| | - Kyungjoo Kim
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Seoul St Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea,
| | - Ki-Suck Jung
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Republic of Korea
| | - Kwang Ha Yoo
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Chin Kook Rhee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Seoul St Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea,
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27
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Lage VKS, Lacerda ACR, Neves CDC, Chaves MGA, Soares AA, Lima LP, Martins JB, Matos MA, Vieira ÉLM, Teixeira AL, Leite HR, Oliveira VC, Mendonça VA. Acute Effects of Whole-Body Vibration on Inflammatory Markers in People with Chronic Obstructive Pulmonary Disease: A Pilot Study. Rehabil Res Pract 2018; 2018:5480214. [PMID: 30057818 PMCID: PMC6051030 DOI: 10.1155/2018/5480214] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/25/2018] [Accepted: 05/08/2018] [Indexed: 12/05/2022] Open
Abstract
Whole-body vibration (WBV) has gained prominence in the rehabilitation of individuals with chronic obstructive pulmonary disease (COPD) because it is a safe and low intensity exercise that promises beneficial effects on physical performance and quality of life. However, its effects on plasma cytokine levels in COPD are still unclear. The aim of the current study was to investigate the acute effects of WBV on inflammatory biomarkers in people with COPD. Twenty-six participants, COPD people (n=13) and healthy controls (n=13), were included. Both groups performed WBV at amplitude of 2 mm and frequency of vibration of 35 Hz, during six series of 30 seconds. They were assessed for lung function, body composition, 6-minute walking test (6MWT), handgrip strength test, plasma concentrations of interleukin (IL), IL-6, IL-8, and IL-10, and soluble tumor necrosis factor alpha (TNF-α) receptors (sTNFR-1 and sTNFR-2). People with COPD had moderate disease [forced expiratory volume in the first second (FEV1) = 58.1%], as well as a worse performance in the 6MWT. The plasma cytokine profile at rest showed that participants with COPD had higher levels of IL-8 and lower levels of IL-10. After one session of WBV, we found an increased plasma IL-10 level in the COPD group, with similar levels for healthy controls. One session of WBV modified the plasma IL-10 level. No effects were found on the other investigated cytokines.
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Affiliation(s)
- Vanessa K. S. Lage
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Ana Cristina R. Lacerda
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brazil
| | - Camila D. C. Neves
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Maria Gabriela A. Chaves
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Aline A. Soares
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Liliana P. Lima
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brazil
| | - Jeanne B. Martins
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Mariana A. Matos
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - Érica L. M. Vieira
- Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Antônio L. Teixeira
- Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Hércules R. Leite
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brazil
| | - Vinicius Cunha Oliveira
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brazil
| | - Vanessa A. Mendonça
- Programa Multicêntrico de Pós-Graduação em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Laboratório de Inflamação e Metabolismo (LIM), CIPq Saúde, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
- Programa de Pós-Graduação em Reabilitação e Desempenho Funcional, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brazil
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28
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Ferrante G, Baldissera S, Campostrini S. Epidemiology of chronic respiratory diseases and associated factors in the adult Italian population. Eur J Public Health 2018; 27:1110-1116. [PMID: 29016794 DOI: 10.1093/eurpub/ckx109] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background Detailed epidemiology of Chronic Respiratory Diseases (CRDs) and of their risk and protective factors is needed to plan preventive interventions to reduce the burden of CRDs on population health. This study determines the prevalence of doctor-diagnosed CRDs and its associated factors in the adult Italian population. Methods Data was collected from adults participating in the ongoing cross-sectional Italian Behavioural Risk Factor Surveillance System (PASSI) between 2013 and 2015. Results Among 108 705 respondents, 7.0% reported a CRD (3.4% asthma, 2.6% COPD, 1.0% Asthma-COPD Overlap Syndrome). Current smoking was more frequent in the group with CRD compared to those without (30.8% vs. 25.2%, P < 0.001), as was physical inactivity (41.9% vs. 36.4%, P 0.009) and overweight/obesity (52.4% vs. 41.4%, P 0.009). Adults with CRDs also reported appropriate perception of insufficient physical activity and excessive body weight, adopted protective behaviours and received preventive interventions more often than those without CRDs. Conclusions Italian adults with CRDs are more likely to be exposed to aggravating factors but are also knowledgeable of their condition and amenable to behaviour change. Since effective interventions for modifying these factors are available, there is an opportunity to reduce the significant disease burden of CRDs through specifically targeted health promotion interventions.
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Affiliation(s)
- Gianluigi Ferrante
- National Institute of Public Health, National Center for Drug Research and Evaluation, Viale Regina Elena, 299, 00161, Rome, Italy
| | - Sandro Baldissera
- PASSI coordinating group, National Institute of Public Health, National Centre of Epidemiology, Surveillance and Health Promotion, Viale Regina Elena, 299, 00161, Rome, Italy
| | - Stefano Campostrini
- Ca'Foscari University, Department of Statistics, Dorsoduro 3246, 30123,Venice, Italy
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Yilmaz FT, Aydin HT. The effect of a regular walking program on dyspnoea severity and quality of life in normal weight, overweight, and obese patients with chronic obstructive pulmonary disease. Int J Nurs Pract 2018; 24:e12636. [PMID: 29498156 DOI: 10.1111/ijn.12636] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 01/26/2018] [Accepted: 01/28/2018] [Indexed: 12/01/2022]
Abstract
AIM The objective was to determine the effect of a regular walking program on physical activity (the number of steps and walking duration), dyspnoea severity, and quality of life in normal weight, overweight, and obese patients with chronic obstructive pulmonary disease. METHOD An experimental study; 50 patients with chronic obstructive pulmonary disease admitted to the respiratory clinic of a public hospital in Turkey between November 2014 and July 2015 were included. All the patients underwent a regular walking program (at least 30 minutes every day) using a pedometer for 16 weeks under the supervision of a nurse. RESULTS After the regular walking program, the respiratory function test results of the obese patients were significantly improved. The walking duration, the number of steps taken per day, and the quality of life of all participants improved significantly, and dyspnoea severity was reduced in all participants. CONCLUSION The regular walking program reduced dyspnoea severity and improved quality of life in all participants. Nurses' efforts to increase activity levels in all patients with chronic obstructive pulmonary disease, and particularly those with obesity, through a regular walking program may contribute to reduce the severity of dyspnoea and improve quality of life.
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Affiliation(s)
- Feride Taskin Yilmaz
- Department of Internal Diseases Nursing, School of Susehri Health High, Cumhuriyet University, Sivas, Turkey
| | - Hatice Tel Aydin
- Department of Internal Diseases Nursing, Faculty of Healthy Science, Cumhuriyet University, Sivas, Turkey
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Poortinga W, Rodgers SE, Lyons RA, Anderson P, Tweed C, Grey C, Jiang S, Johnson R, Watkins A, Winfield TG. The health impacts of energy performance investments in low-income areas: a mixed-methods approach. PUBLIC HEALTH RESEARCH 2018. [DOI: 10.3310/phr06050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BackgroundCold homes and fuel poverty contribute to health inequalities in ways that could be addressed through energy efficiency interventions.ObjectivesTo determine the health and psychosocial impacts of energy performance investments in low-income areas, particularly hospital admissions for cardiorespiratory conditions, prevalence of respiratory symptoms and mental health status, hydrothermal conditions and household energy use, psychosocial outcomes, cost consequences to the health system and the cost utility of these investments.DesignA mixed-methods study comprising data linkage (25,908 individuals living in 4968 intervention homes), a field study with a controlled pre-/post-test design (intervention,n = 418; control,n = 418), a controlled multilevel interrupted time series analysis of internal hydrothermal conditions (intervention,n = 48; control,n = 40) and a health economic assessment.SettingLow-income areas across Wales.ParticipantsResidents who received energy efficiency measures through the intervention programme and matched control groups.Main outcome measuresPrimary outcomes – emergency hospital admissions for cardiorespiratory conditions, self-reported respiratory symptoms, mental health status, indoor air temperature and indoor relative humidity. Secondary outcomes – emergency hospital admissions for chronic obstructive pulmonary disease-related cardiorespiratory conditions, excess winter admissions, health-related quality of life, subjective well-being, self-reported fuel poverty, financial stress and difficulties, food security, social interaction, thermal satisfaction and self-reported housing conditions.MethodsAnonymously linked individual health records for emergency hospital admissions were analysed using mixed multilevel linear models. A quasi-experimental controlled field study used a multilevel repeated measures approach. Controlled multilevel interrupted time series analyses were conducted to estimate changes in internal hydrothermal conditions following the intervention. The economic evaluation comprised cost–consequence and cost–utility analyses.Data sourcesThe Patient Episode Database for Wales 2005–14, intervention records from 28 local authorities and housing associations, and scheme managers who delivered the programme.ResultsThe study found no evidence of changes in physical health. However, there were improvements in subjective well-being and a number of psychosocial outcomes. The household monitoring study found that the intervention raised indoor temperature and helped reduce energy use. No evidence was found of substantial increases in indoor humidity levels. The health economic assessment found no explicit cost reductions to the health service as a result of non-significant changes in emergency admissions for cardiorespiratory conditions.LimitationsThis was a non-randomised intervention study with household monitoring and field studies that relied on self-response. Data linkage focused on emergency admissions only.ConclusionAlthough there was no evidence that energy performance investments provide physical health benefits or reduce health service usage, there was evidence that they improve social and economic conditions that are conducive to better health and improved subjective well-being. The intervention has been successful in reducing energy use and improving the living conditions of households in low-income areas. The lack of association of emergency hospital admissions with energy performance investments means that we were unable to evidence cost saving to health-service providers.Future workOur research suggests the importance of incorporating evaluations with follow-up into intervention research from the start.FundingThe National Institute for Health Research Public Health Research programme.
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Affiliation(s)
| | - Sarah E Rodgers
- Farr Institute, College of Medicine, Swansea University, Swansea, UK
| | - Ronan A Lyons
- Farr Institute, College of Medicine, Swansea University, Swansea, UK
| | - Pippa Anderson
- Swansea Centre for Health Economics, College of Human and Health Sciences, Swansea University, Swansea, UK
| | - Chris Tweed
- Welsh School of Architecture, Cardiff University, Cardiff, UK
| | - Charlotte Grey
- Welsh School of Architecture, Cardiff University, Cardiff, UK
| | - Shiyu Jiang
- Welsh School of Architecture, Cardiff University, Cardiff, UK
| | - Rhodri Johnson
- Farr Institute, College of Medicine, Swansea University, Swansea, UK
| | - Alan Watkins
- Farr Institute, College of Medicine, Swansea University, Swansea, UK
| | - Thomas G Winfield
- Swansea Centre for Health Economics, College of Human and Health Sciences, Swansea University, Swansea, UK
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Hanlon P, Nicholl BI, Jani BD, McQueenie R, Lee D, Gallacher KI, Mair FS. Examining patterns of multimorbidity, polypharmacy and risk of adverse drug reactions in chronic obstructive pulmonary disease: a cross-sectional UK Biobank study. BMJ Open 2018; 8:e018404. [PMID: 29332840 PMCID: PMC5781016 DOI: 10.1136/bmjopen-2017-018404] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 11/23/2017] [Accepted: 11/29/2017] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE This study aims: (1) to describe the pattern and extent of multimorbidity and polypharmacy in UK Biobank participants with chronic obstructive pulmonary disease (COPD) and (2) to identify which comorbidities are associated with increased risk of adverse drug reactions (ADRs) resulting from polypharmacy. DESIGN Cross-sectional. SETTING Community cohort. PARTICIPANTS UK Biobank participants comparing self-reported COPD (n=8317) with no COPD (n=494 323). OUTCOMES Multimorbidity (≥4 conditions) and polypharmacy (≥5 medications) in participants with COPD versus those without. Risk of ADRs (taking ≥3 medications associated with falls, constipation, urinary retention, central nervous system (CNS) depression, bleeding or renal injury) in relation to the presence of COPD and individual comorbidities. RESULTS Multimorbidity was more common in participants with COPD than those without (17% vs 4%). Polypharmacy was highly prevalent (52% with COPD taking ≥5 medications vs 18% in those without COPD). Adjusting for age, sex and socioeconomic status, those with COPD were significantly more likely than those without to be prescribed ≥3 medications contributing to falls (OR 2.27, 95% CI 2.13 to 2.42), constipation (OR 3.42, 95% CI 3.10 to 3.77), urinary retention (OR 3.38, 95% CI 2.94 to 3.87), CNS depression (OR 3.75, 95% CI 3.31 to 4.25), bleeding (OR 4.61, 95% CI 3.35 to 6.19) and renal injury (OR 2.22, 95% CI 1.86 to 2.62). Concomitant cardiovascular disease was associated with the greatest risk of taking ≥3 medications associated with falls/renal injury. Concomitant mental health conditions were most strongly associated with medications linked with CNS depression/urinary retention/bleeding. CONCLUSIONS Multimorbidity is common in COPD and associated with high levels of polypharmacy. Co-prescription of drugs with various ADRs is common. Future research should examine the effects on healthcare outcomes of co-prescribing multiple drugs with similar potential ADRs. Clinical guidelines should emphasise assessment of multimorbidity and ADR risk.
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Affiliation(s)
- Peter Hanlon
- General Practice and Primary Care, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Barbara I Nicholl
- General Practice and Primary Care, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Bhautesh Dinesh Jani
- General Practice and Primary Care, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Ross McQueenie
- General Practice and Primary Care, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Duncan Lee
- School of Mathematics and Statistics, University of Glasgow, Glasgow, UK
| | - Katie I Gallacher
- General Practice and Primary Care, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
| | - Frances S Mair
- General Practice and Primary Care, Institute of Health and Wellbeing, University of Glasgow, Glasgow, UK
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Zewari S, Vos P, van den Elshout F, Dekhuijzen R, Heijdra Y. Obesity in COPD: Revealed and Unrevealed Issues. COPD 2017; 14:663-673. [DOI: 10.1080/15412555.2017.1383978] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- S. Zewari
- Department of Pulmonary Disease, Rijnstate hospital, Arnhem, The Netherlands
| | - P. Vos
- Department of Pulmonary Disease, Rijnstate hospital, Arnhem, The Netherlands
| | - F. van den Elshout
- Department of Pulmonary Disease, Rijnstate hospital, Arnhem, The Netherlands
| | - R. Dekhuijzen
- Department of Pulmonary Disease, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
| | - Y. Heijdra
- Department of Pulmonary Disease, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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Verberne LDM, Leemrijse CJ, Swinkels ICS, van Dijk CE, de Bakker DH, Nielen MMJ. Overweight in patients with chronic obstructive pulmonary disease needs more attention: a cross-sectional study in general practice. NPJ Prim Care Respir Med 2017; 27:63. [PMID: 29167434 PMCID: PMC5700136 DOI: 10.1038/s41533-017-0065-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 11/01/2017] [Accepted: 11/02/2017] [Indexed: 11/29/2022] Open
Abstract
Guidelines for management of chronic obstructive pulmonary disease (COPD) primarily focus on the prevention of weight loss, while overweight and obesity are highly prevalent in patients with milder stages of COPD. This cross-sectional study examines the association of overweight and obesity with the prevalence of comorbid disorders and prescribed medication for obstructive airway disease, in patients with mild to moderate COPD. Data were used from electronic health records of 380 Dutch general practices in 2014. In total, we identified 4938 patients with mild or moderate COPD based on spirometry data, and a recorded body mass index (BMI) of ≥21 kg/m2. Outcomes in overweight (BMI ≥ 25 and <30 kg/m2) and obese (BMI ≥30 kg/m2) patients with COPD were compared to those with a normal weight (BMI ≥ 21 and <25 kg/m2), by logistic multilevel analyses. Compared to COPD patients with a normal weight, positive associations were found for diabetes, osteoarthritis, and hypertension, for both overweight (OR: 1.4-1.7) and obese (OR: 2.4-3.8) patients, and for heart failure in obese patients (OR: 2.3). Osteoporosis was less prevalent in overweight (OR: 0.7) and obese (OR: 0.5) patients, and anxiety disorders in obese patients (OR: 0.5). No associations were found for coronary heart disease, stroke, sleep disturbance, depression, and pneumonia. Furthermore, obese patients were in general more often prescribed medication for obstructive airway disease compared to patients with a normal weight. The findings of this study underline the need to increase awareness in general practitioners for excess weight in patients with mild to moderate COPD.
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Affiliation(s)
- Lisa D M Verberne
- Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands.
| | - Chantal J Leemrijse
- Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands
| | - Ilse C S Swinkels
- Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands
| | - Christel E van Dijk
- Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands
| | - Dinny H de Bakker
- Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands
| | - Mark M J Nielen
- Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands
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Cazzola M, Rogliani P, Calzetta L, Lauro D, Page C, Matera MG. Targeting Mechanisms Linking COPD to Type 2 Diabetes Mellitus. Trends Pharmacol Sci 2017; 38:940-951. [DOI: 10.1016/j.tips.2017.07.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 07/10/2017] [Accepted: 07/13/2017] [Indexed: 01/26/2023]
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Lamonaca P, Prinzi G, Kisialiou A, Cardaci V, Fini M, Russo P. Metabolic Disorder in Chronic Obstructive Pulmonary Disease (COPD) Patients: Towards a Personalized Approach Using Marine Drug Derivatives. Mar Drugs 2017; 15:E81. [PMID: 28335527 PMCID: PMC5367038 DOI: 10.3390/md15030081] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 02/23/2017] [Accepted: 03/15/2017] [Indexed: 12/18/2022] Open
Abstract
Metabolic disorder has been frequently observed in chronic obstructive pulmonary disease (COPD) patients. However, the exact correlation between obesity, which is a complex metabolic disorder, and COPD remains controversial. The current study summarizes a variety of drugs from marine sources that have anti-obesity effects and proposed potential mechanisms by which lung function can be modulated with the anti-obesity activity. Considering the similar mechanism, such as inflammation, shared between obesity and COPD, the study suggests that marine derivatives that act on the adipose tissues to reduce inflammation may provide beneficial therapeutic effects in COPD subjects with high body mass index (BMI).
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Affiliation(s)
- Palma Lamonaca
- Clinical and Molecular Epidemiology, IRCSS San Raffaele Pisana, Via di Valcannuta 247, I-00166 Rome, Italy.
| | - Giulia Prinzi
- Clinical and Molecular Epidemiology, IRCSS San Raffaele Pisana, Via di Valcannuta 247, I-00166 Rome, Italy.
| | - Aliaksei Kisialiou
- Clinical and Molecular Epidemiology, IRCSS San Raffaele Pisana, Via di Valcannuta 247, I-00166 Rome, Italy.
| | - Vittorio Cardaci
- Department of Pulmonary Rehabilitation, IRCCS San Raffaele Pisana, Via della Pisana 235, I-00163 Rome, Italy.
| | - Massimo Fini
- Scientific Direction, IRCSS San Raffaele Pisana, Via di Valcannuta 247, I-00166 Rome, Italy.
| | - Patrizia Russo
- Clinical and Molecular Epidemiology, IRCSS San Raffaele Pisana, Via di Valcannuta 247, I-00166 Rome, Italy.
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Lim JU, Lee JH, Kim JS, Hwang YI, Kim TH, Lim SY, Yoo KH, Jung KS, Kim YK, Rhee CK. Comparison of World Health Organization and Asia-Pacific body mass index classifications in COPD patients. Int J Chron Obstruct Pulmon Dis 2017; 12:2465-2475. [PMID: 28860741 PMCID: PMC5571887 DOI: 10.2147/copd.s141295] [Citation(s) in RCA: 225] [Impact Index Per Article: 32.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION A low body mass index (BMI) is associated with increased mortality and low health-related quality of life in patients with COPD. The Asia-Pacific classification of BMI has a lower cutoff for overweight and obese categories compared to the World Health Organization (WHO) classification. The present study assessed patients with COPD among different BMI categories according to two BMI classification systems: WHO and Asia-Pacific. PATIENTS AND METHODS Patients with COPD aged 40 years or older from the Korean COPD Subtype Study cohort were selected for evaluation. We enrolled 1,462 patients. Medical history including age, sex, St George's Respiratory Questionnaire (SGRQ-C), the modified Medical Research Council (mMRC) dyspnea scale, and post-bronchodilator forced expiratory volume in 1 second (FEV1) were evaluated. Patients were categorized into different BMI groups according to the two BMI classification systems. RESULT FEV1 and the diffusing capacity of the lung for carbon monoxide (DLCO) percentage revealed an inverse "U"-shaped pattern as the BMI groups changed from underweight to obese when WHO cutoffs were applied. When Asia-Pacific cutoffs were applied, FEV1 and DLCO (%) exhibited a linearly ascending relationship as the BMI increased, and the percentage of patients in the overweight and obese groups linearly decreased with increasing severity of the Global Initiative for Chronic Obstructive Lung Disease criteria. From the underweight to the overweight groups, SGRQ-C and mMRC had a decreasing relationship in both the WHO and Asia-Pacific classifications. The prevalence of comorbidities in the different BMI groups showed similar trends in both BMI classifications systems. CONCLUSION The present study demonstrated that patients with COPD who have a high BMI have better pulmonary function and health-related quality of life and reduced dyspnea symptoms. Furthermore, the Asia-Pacific BMI classification more appropriately reflects the correlation of obesity and disease manifestation in Asian COPD patients than the WHO classification.
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Affiliation(s)
- Jeong Uk Lim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, St Paul’s Hospital, College of Medicine, The Catholic University of Korea
| | - Jae Ha Lee
- Division of Pulmonology, Department of Internal Medicine, Inje University College of Medicine, Haeundae Paik Hospital, Busan
| | - Ju Sang Kim
- Division of Pulmonary Medicine, Department of Internal Medicine, Incheon St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon
| | - Yong Il Hwang
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang
| | - Tae-Hyung Kim
- Division of Pulmonary and Critical Care Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri
| | - Seong Yong Lim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine
| | - Kwang Ha Yoo
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Konkuk University School of Medicine
| | - Ki-Suck Jung
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang
| | - Young Kyoon Kim
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Correspondence: Young Kyoon Kim; Chin Kook Rhee, Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea, 222, Banpo-daero Seocho-gu, Seoul 06591, Republic of Korea, Tel +82 2 2258 6059; +82 2 2258 6067, Fax +82 2 599 3589, Email ;
| | - Chin Kook Rhee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Correspondence: Young Kyoon Kim; Chin Kook Rhee, Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea, 222, Banpo-daero Seocho-gu, Seoul 06591, Republic of Korea, Tel +82 2 2258 6059; +82 2 2258 6067, Fax +82 2 599 3589, Email ;
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Houben-Wilke S, Spruit MA, Uszko-Lencer NH, Otkinska G, Vanfleteren LE, Jones PW, Wouters EF, Franssen FM. Echocardiographic abnormalities and their impact on health status in patients with COPD referred for pulmonary rehabilitation. Respirology 2016; 22:928-934. [DOI: 10.1111/resp.12968] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 10/12/2016] [Accepted: 10/24/2016] [Indexed: 12/28/2022]
Affiliation(s)
- Sarah Houben-Wilke
- Department of Research and Education; CIRO+, Centre of Expertise for Chronic Organ Failure; Horn The Netherlands
| | - Martijn A. Spruit
- Department of Research and Education; CIRO+, Centre of Expertise for Chronic Organ Failure; Horn The Netherlands
| | - Nicole H.M.K. Uszko-Lencer
- Department of Research and Education; CIRO+, Centre of Expertise for Chronic Organ Failure; Horn The Netherlands
- Department of Cardiology; Maastricht University Medical Centre + (MUMC+); Maastricht The Netherlands
| | - Gosia Otkinska
- Department of Cardiology; Maastricht University Medical Centre + (MUMC+); Maastricht The Netherlands
| | - Lowie E.G.W. Vanfleteren
- Department of Research and Education; CIRO+, Centre of Expertise for Chronic Organ Failure; Horn The Netherlands
- Department of Respiratory Medicine; Maastricht University Medical Centre + (MUMC+); Maastricht The Netherlands
| | - Paul W. Jones
- Division of Clinical Science; St. George's University of London; London UK
| | - Emiel F.M. Wouters
- Department of Research and Education; CIRO+, Centre of Expertise for Chronic Organ Failure; Horn The Netherlands
- Department of Respiratory Medicine; Maastricht University Medical Centre + (MUMC+); Maastricht The Netherlands
| | - Frits M.E. Franssen
- Department of Research and Education; CIRO+, Centre of Expertise for Chronic Organ Failure; Horn The Netherlands
- Department of Respiratory Medicine; Maastricht University Medical Centre + (MUMC+); Maastricht The Netherlands
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McDonald VM, Wood LG, Holland AE, Gibson PG. Obesity in COPD: to treat or not to treat? Expert Rev Respir Med 2016; 11:81-83. [PMID: 27910701 DOI: 10.1080/17476348.2017.1267570] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Vanessa M McDonald
- a National Health and Medical Research Council Centre of Excellence in Severe Asthma , Newcastle , Australia.,b Priority Research Centre for Healthy Lungs , The University of Newcastle , Newcastle , Australia.,c Department of Respiratory and Sleep Medicine , John Hunter Hospital , Newcastle , Australia
| | - Lisa G Wood
- b Priority Research Centre for Healthy Lungs , The University of Newcastle , Newcastle , Australia
| | - Anne E Holland
- d Discipline of Physiotherapy , La Trobe University , Melbourne , Australia.,e Department of Physiotherapy , Alfred Health , Melbourne , Australia.,f Institute for Breathing and Sleep , Melbourne , Australia
| | - Peter G Gibson
- a National Health and Medical Research Council Centre of Excellence in Severe Asthma , Newcastle , Australia.,b Priority Research Centre for Healthy Lungs , The University of Newcastle , Newcastle , Australia.,c Department of Respiratory and Sleep Medicine , John Hunter Hospital , Newcastle , Australia
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Sundh J, Ekström M. Persistent disabling breathlessness in chronic obstructive pulmonary disease. Int J Chron Obstruct Pulmon Dis 2016; 11:2805-2812. [PMID: 27877034 PMCID: PMC5108478 DOI: 10.2147/copd.s119992] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To determine the prevalence, change in breathlessness status over time, and risk factors for disabling and persistent disabling breathlessness in relation to treatments in chronic obstructive pulmonary disease (COPD). MATERIALS AND METHODS Longitudinal analysis of data from the Swedish National Register of COPD with breathlessness measured using modified Medical Research Council (mMRC) scores at two subsequent visits. Prevalence of disabling breathlessness (mMRC ≥2 at baseline) and persistent disabling breathlessness (disabling breathlessness at baseline and follow-up) was investigated in relation to COPD treatment. Risk factors for disabling breathlessness, change from non-disabling to disabling breathlessness, and persistent disabling breathlessness were analyzed using multiple logistic regression. RESULTS A total of 1,689 patients were included in the study with a median follow-up of 12 months (interquartile range: 4 months). Prevalence of disabling breathlessness was 54% at baseline. Persistent disabling breathlessness was present in 43% of patients despite treatment and in 74% of patients despite combined inhaled triple therapy and physiotherapy. Risk factors for disabling breathlessness or change to disabling breathlessness were higher age, lower lung function, frequent exacerbations, obesity, heart failure, depression, and hypoxic respiratory failure (all P<0.05). Persistent disabling breathlessness was associated with lower lung function and ischemic heart disease (all P<0.05). CONCLUSION Disabling breathlessness is common in COPD despite treatment, which calls for improved symptomatic treatments and consideration of factors influencing disabling breathlessness. Factors influencing disabling breathlessness should be considered for COPD management.
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Affiliation(s)
- Josefin Sundh
- Department of Respiratory Medicine, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - Magnus Ekström
- Department of Clinical Sciences, Division of Respiratory Medicine and Allergology, Lund University, Lund, Sweden
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Obesity Is Associated With Increased Morbidity in Moderate to Severe COPD. Chest 2016; 151:68-77. [PMID: 27568229 DOI: 10.1016/j.chest.2016.08.1432] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 07/01/2016] [Accepted: 08/01/2016] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Obesity is prevalent in the United States; however, the impact of obesity on COPD morbidity is unclear. We hypothesized that obesity is associated with worse outcomes in COPD. METHODS We examined 3,631 participants from the multicenter prospective cohort study Genetic Epidemiology of COPD (COPDGene) who had spirometry-confirmed COPD, a postbronchodilator FEV1 < 80% predicted, and a BMI ≥ 18.5 kg/m2. We conducted logistic and linear regression analyses to determine the association between COPD outcomes and obesity class, adjusting for relevant confounders. The referent for obesity classes included normal/overweight individuals (BMI range, 18.5-29.9 kg/m2). RESULTS Overall, 35% of participants were obese, with 21% class I (BMI range, 30-34.9 kg/m2), 9% class II (BMI range, 35-39.9 kg/m2), and 5% class III (BMI ≥ 40 kg/m2). The number of comorbidities increased with increasing obesity class (P < .001). Increasing obesity class was independently associated with worse respiratory-specific and general quality of life (QOL) (St. George's Respiratory Questionnaire score and Short Form-36 score version 2, respectively), reduced 6-min walk distance (6MWD), increased dyspnea (Modified Medical Research Council score ≥ 2), and greater odds of severe acute exacerbation of COPD (AECOPD). The associations between obesity and worse outcomes were independent of the presence of comorbidities, except in the case of SF-36 and severe exacerbations. CONCLUSIONS Obesity is prevalent among individuals with COPD and associated with worse COPD-related outcomes, ranging from QOL and dyspnea to 6MWD and severe AECOPD. These associations were strengthened when obesity was analyzed as a dose-dependent response. Obesity in patients with COPD may contribute to a worse COPD-related course.
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Zhang Q, Wu Y, Fei X. Effect of probiotics on body weight and body-mass index: a systematic review and meta-analysis of randomized, controlled trials. Int J Food Sci Nutr 2016; 67:571-80. [DOI: 10.1080/09637486.2016.1181156] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Takeda Y, Suzuki M, Jin Y, Tachibana I. Preventive Role of Tetraspanin CD9 in Systemic Inflammation of Chronic Obstructive Pulmonary Disease. Am J Respir Cell Mol Biol 2016; 53:751-60. [PMID: 26378766 DOI: 10.1165/rcmb.2015-0122tr] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is frequently associated with extrapulmonary complications, including cardiovascular disease, diabetes, and osteoporosis. Persistent, low-grade, systemic inflammation underlies these comorbid disorders. Tetraspanins, which have a characteristic structure spanning the membrane four times, facilitate lateral organization of molecular complexes and thereby form tetraspanin-enriched microdomains that are distinct from lipid rafts. Recent basic research has suggested a preventive role of tetraspanin CD9 in COPD. CD9-enriched microdomains negatively regulate LPS-induced receptor formation by preventing CD14 from accumulating into the rafts, and decreased CD9 in macrophages enhances inflammation in mice. Mice doubly deficient in CD9 and a related tetraspanin, CD81, show pulmonary emphysema, weight loss, and osteopenia, a phenotype akin to human COPD. A therapeutic approach to up-regulating CD9 in macrophages might improve the clinical course of patients with COPD with comorbidities.
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Affiliation(s)
- Yoshito Takeda
- 1 Department of Respiratory Medicine, Allergy, and Rheumatic Diseases, Osaka University Graduate School of Medicine, Suita, Osaka, Japan, and
| | - Mayumi Suzuki
- 2 Department of Medicine, Nissay Hospital, Nippon Life Saiseikai Public Interest Incorporated Foundation, Nishi-ku, Osaka, Japan
| | - Yingji Jin
- 1 Department of Respiratory Medicine, Allergy, and Rheumatic Diseases, Osaka University Graduate School of Medicine, Suita, Osaka, Japan, and
| | - Isao Tachibana
- 2 Department of Medicine, Nissay Hospital, Nippon Life Saiseikai Public Interest Incorporated Foundation, Nishi-ku, Osaka, Japan
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Wheaton AG, Pleasants RA, Croft JB, Ohar JA, Heidari K, Mannino DM, Liu Y, Strange C. Gender and asthma-chronic obstructive pulmonary disease overlap syndrome. J Asthma 2016; 53:720-31. [PMID: 27043854 DOI: 10.3109/02770903.2016.1154072] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To assess relationships between obstructive lung diseases, respiratory symptoms, and comorbidities by gender. METHODS Data from 12 594 adult respondents to the 2012 South Carolina Behavioral Risk Factor Surveillance System telephone survey were used. Five categories of chronic obstructive airway disease (OAD) were defined: former asthma only, current asthma only, chronic obstructive pulmonary disease (COPD) only, asthma-COPD overlap syndrome (ACOS), and none. Associations of these categories with respiratory symptoms (frequent productive cough, shortness of breath, and impaired physical activities due to breathing problems), overall health, and comorbidities were assessed using multivariable logistic regression for men and women. RESULTS Overall, 16.2% of men and 18.7% of women reported a physician diagnosis of COPD and/or asthma. Former asthma only was higher among men than women (4.9% vs. 3.2%, t-test p = 0.008). Current asthma only was more prevalent among women than men (7.2% vs. 4.7%, p < 0.001), as was ACOS (4.0% vs. 2.2%, p < 0.001). Having COPD only did not differ between women (4.3%) and men (4.4%). Adults with ACOS were most likely to report the 3 respiratory symptoms. COPD only and ACOS were associated with higher likelihoods of poor health and most comorbidities for men and women. Current asthma only was also associated with these outcomes among women, but not among men. CONCLUSIONS In this large population-based sample, women were more likely than men to report ACOS and current asthma, but not COPD alone. Gender differences were evident between the OAD groups in sociodemographic characteristics, respiratory symptoms, and comorbidities, as well as overall health.
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Affiliation(s)
- Anne G Wheaton
- a Division of Population Health , National Center for Chronic Disease Prevention and Health Promotion , Centers for Disease Control and Prevention , Atlanta , GA , USA
| | - Roy A Pleasants
- b Division of Pulmonary, Allergy, and Critical Care Medicine , Duke University School of Medicine , Durham , NC , USA
| | - Janet B Croft
- a Division of Population Health , National Center for Chronic Disease Prevention and Health Promotion , Centers for Disease Control and Prevention , Atlanta , GA , USA
| | - Jill A Ohar
- c Section on Pulmonary, Critical Care, Allergy & Immunologic Disease , Wake Forest University School of Medicine , Winston Salem , NC , USA
| | - Khosrow Heidari
- d Chronic Disease Epidemiology Office , South Carolina Department of Health and Environmental Control , Columbia , SC , USA
| | - David M Mannino
- e Division of Pulmonary, Critical Care, and Sleep Medicine , Pulmonary Epidemiology Research Laboratory , University of Kentucky , Lexington , KY , USA
| | - Yong Liu
- a Division of Population Health , National Center for Chronic Disease Prevention and Health Promotion , Centers for Disease Control and Prevention , Atlanta , GA , USA
| | - Charlie Strange
- f Division of Pulmonary, Critical Care, Allergy and Sleep Medicine , Medical University of South Carolina , Charleston , SC , USA
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Fragoso E, André S, Boleo-Tomé JP, Areias V, Munhá J, Cardoso J. Understanding COPD: A vision on phenotypes, comorbidities and treatment approach. REVISTA PORTUGUESA DE PNEUMOLOGIA 2016; 22:101-11. [PMID: 26827246 DOI: 10.1016/j.rppnen.2015.12.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 11/27/2015] [Accepted: 12/02/2015] [Indexed: 01/31/2023] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) phenotypes have become increasingly recognized as important for grouping patients with similar presentation and/or behavior, within the heterogeneity of the disease. The primary aim of identifying phenotypes is to provide patients with the best health care possible, tailoring the therapeutic approach to each patient. However, the identification of specific phenotypes has been hindered by several factors such as which specific attributes are relevant, which discriminant features should be used for assigning patients to specific phenotypes, and how relevant are they to the therapeutic approach, prognostic and clinical outcome. Moreover, the definition of phenotype is still not consensual. Comorbidities, risk factors, modifiable risk factors and disease severity, although not phenotypes, have impact across all COPD phenotypes. Although there are some identified phenotypes that are fairly consensual, many others have been proposed, but currently lack validation. The on-going debate about which instruments and tests should be used in the identification and definition of phenotypes has contributed to this uncertainty. In this paper, the authors review present knowledge regarding COPD phenotyping, discuss the role of phenotypes and comorbidities on the severity of COPD, propose new phenotypes and suggest a phenotype-based pharmacological therapeutic approach. The authors conclude that a patient-tailored treatment approach, which takes into account each patient's specific attributes and specificities, should be pursued.
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Affiliation(s)
- E Fragoso
- Pulmonology Department, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte, EPE (CHLN), Lisbon, Portugal.
| | - S André
- Pulmonology Department, Hospital Egas Moniz, Centro Hospitalar de Lisboa Ocidental, EPE(CHLO), Lisbon, Portugal.
| | - J P Boleo-Tomé
- Pulmonology Department, Hospital Prof. Doutor Fernando da Fonseca, EPE, Amadora, Portugal.
| | - V Areias
- Pulmonology Department, Hospital de Faro, Centro Hospitalar do Algarve, EPE, Faro, Portugal; Department of Biomedical Sciences and Medicine, Algarve University, Portugal.
| | - J Munhá
- Pulmonology Department, Centro Hospitalar do Barlavento Algarvio, EPE, Portimão, Portugal.
| | - J Cardoso
- Pulmonology Department, Hospital de Santa Marta, Centro Hospitalar de Lisboa Central, EPE (CHLC), Lisbon, Portugal; Nova Medical School, Nova University, Lisbon, Portugal.
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Abstract
Chronic obstructive pulmonary disease (COPD), characterized by chronic airways inflammation and progressive airflow limitation, is a common, preventable and treatable disease. Worldwide, COPD is a major cause of morbidity and mortality; smoking tobacco is the most important risk factor. This translational review of recent updates in COPD care for the primary care audience, includes recommendations from the 2015 Global Initiative for chronic obstructive lung disease (GOLD) report on diagnosis, pharmacological and non-pharmacological treatment, prevalence of comorbidities, management of exacerbations and the asthma and COPD overlap syndrome, with a focus on the importance and benefit of physical activity and exercise in COPD patients. Exacerbations and comorbidities contribute to the overall severity of COPD in individual patients. Management of exacerbations includes reducing the impact of the current exacerbation and preventing development of subsequent episodes. Healthcare professionals need to be alert to comorbidities, such as cardiovascular disease, anxiety/depression, lung cancer, infections and diabetes, which are common in COPD patients and can have a significant impact on HRQoL and prognosis. Pulmonary rehabilitation is recommended by a number of guidelines for all symptomatic COPD patients, regardless of severity, and involves exercise training, patient education, nutritional advice and psychosocial support. At all stages of COPD, regular physical activity and exercise can aid symptom control, improve HRQoL, reduce rates of hospitalization, and improve morbidity and respiratory mortality. Healthcare professionals play a pivotal role in improving HRQoL and health-related outcomes in COPD patients to meet their specific needs and in providing appropriate diagnosis, management and advice on smoking cessation.
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Affiliation(s)
- Christine Garvey
- a Department of Sleep Disorders and Pulmonary Rehabilitation, University of California San Francisco , San Francisco , CA , USA
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Quach A, Giovannelli J, Chérot-Kornobis N, Ciuchete A, Clément G, Matran R, Amouyel P, Edmé JL, Dauchet L. Prevalence and underdiagnosis of airway obstruction among middle-aged adults in northern France: The ELISABET study 2011-2013. Respir Med 2015; 109:1553-61. [PMID: 26564001 DOI: 10.1016/j.rmed.2015.10.012] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 09/26/2015] [Accepted: 10/25/2015] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Airway obstruction (AO), mainly due to chronic obstructive pulmonary disease (COPD) in adults, is a major cause of mortality and poor quality of life. However, few data are available for France. This study was designed to calculate the prevalence AO among middle-aged adults in northern France, explore the associated risk factors and evaluate the underdiagnosis. METHODS The Enquête Littoral Souffle Air Biologie Environnement (ELISABET) was a cross-sectional study of a representative sample of 3276 adults aged from 40 to 64 in two urban areas in northern France (Lille and Dunkirk). Participants filled out a questionnaire and performed spirometry testing, without a reversibility test. RESULTS The age-standardized estimated prevalence [95% confidence interval] of AO was 16.0% [13.9; 17.9] in Lille and 13.7% [11.7; 15.7] in Dunkirk with the Global initiative for chronic Obstructive Lung Disease (GOLD) definition and 10.8% [9.2; 12.5] and 9.5% [7.9; 11.2] respectively with the lower limit of normal calculated with the Global Lung Initiative (GLI) 2012 equations. AO was associated with age, male gender, tobacco consumption and low body mass index. The underdiagnosis rate was greater than 70%. Previously undiagnosed participants with AO displayed more respiratory symptoms compared with participants without AO and less than participants with previously diagnosed AO. CONCLUSION The prevalence of AO in northern France ranged from 9.5 to 16.0%, depending on the centre and definition used. The high underdiagnosis rate observed here suggests that greater efforts should be made to identify individuals presenting with the symptoms and/or risk factors associated with AO.
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Affiliation(s)
- Alexandre Quach
- University of Lille, Faculté de Médecine Henri Warembourg, F-59045, Lille Cedex, France; University Hospital of Lille, 2 Avenue Oscar Lambret, F-59000, Lille, France.
| | - Jonathan Giovannelli
- University of Lille, Faculté de Médecine Henri Warembourg, F-59045, Lille Cedex, France; University Hospital of Lille, 2 Avenue Oscar Lambret, F-59000, Lille, France; Pasteur Institute of Lille, INSERM U1167 RID-AGE, 1 Rue du Professeur Calmette, F-59800, Lille, France.
| | - Natalie Chérot-Kornobis
- University of Lille, Faculté de Médecine Henri Warembourg, F-59045, Lille Cedex, France; University Hospital of Lille, 2 Avenue Oscar Lambret, F-59000, Lille, France.
| | - Alina Ciuchete
- Pasteur Institute of Lille, INSERM U1167 RID-AGE, 1 Rue du Professeur Calmette, F-59800, Lille, France.
| | - Guillaume Clément
- University of Lille, Faculté de Médecine Henri Warembourg, F-59045, Lille Cedex, France; Pasteur Institute of Lille, INSERM U1167 RID-AGE, 1 Rue du Professeur Calmette, F-59800, Lille, France.
| | - Régis Matran
- University of Lille, Faculté de Médecine Henri Warembourg, F-59045, Lille Cedex, France; University Hospital of Lille, 2 Avenue Oscar Lambret, F-59000, Lille, France.
| | - Philippe Amouyel
- University of Lille, Faculté de Médecine Henri Warembourg, F-59045, Lille Cedex, France; University Hospital of Lille, 2 Avenue Oscar Lambret, F-59000, Lille, France; Pasteur Institute of Lille, INSERM U1167 RID-AGE, 1 Rue du Professeur Calmette, F-59800, Lille, France.
| | - Jean-Louis Edmé
- University of Lille, Faculté de Médecine Henri Warembourg, F-59045, Lille Cedex, France; University Hospital of Lille, 2 Avenue Oscar Lambret, F-59000, Lille, France.
| | - Luc Dauchet
- University of Lille, Faculté de Médecine Henri Warembourg, F-59045, Lille Cedex, France; University Hospital of Lille, 2 Avenue Oscar Lambret, F-59000, Lille, France; Pasteur Institute of Lille, INSERM U1167 RID-AGE, 1 Rue du Professeur Calmette, F-59800, Lille, France.
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Putcha N, Drummond MB, Wise RA, Hansel NN. Comorbidities and Chronic Obstructive Pulmonary Disease: Prevalence, Influence on Outcomes, and Management. Semin Respir Crit Care Med 2015; 36:575-91. [PMID: 26238643 DOI: 10.1055/s-0035-1556063] [Citation(s) in RCA: 120] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Comorbidities impact a large proportion of patients with chronic obstructive pulmonary disease (COPD), with over 80% of patients with COPD estimated to have at least one comorbid chronic condition. Guidelines for the treatment of COPD are just now incorporating comorbidities to their management recommendations of COPD, and it is becoming increasingly clear that multimorbidity as well as specific comorbidities have strong associations with mortality and clinical outcomes in COPD, including dyspnea, exercise capacity, quality of life, healthcare utilization, and exacerbation risk. Appropriately, there has been an increased focus upon describing the burden of comorbidity in the COPD population and incorporating this information into existing efforts to better understand the clinical and phenotypic heterogeneity of this group. In this article, we summarize existing knowledge about comorbidity burden and specific comorbidities in COPD, focusing on prevalence estimates, association with outcomes, and existing knowledge about treatment strategies.
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Affiliation(s)
- Nirupama Putcha
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland
| | - M Bradley Drummond
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Robert A Wise
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Nadia N Hansel
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland
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Rueda-Clausen CF, Ogunleye AA, Sharma AM. Health Benefits of Long-Term Weight-Loss Maintenance. Annu Rev Nutr 2015; 35:475-516. [DOI: 10.1146/annurev-nutr-071714-034434] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Christian F. Rueda-Clausen
- Obesity Research & Management, Clinical Research Unit, Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2E1 Canada; , ,
| | - Ayodele A. Ogunleye
- Obesity Research & Management, Clinical Research Unit, Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2E1 Canada; , ,
| | - Arya M. Sharma
- Obesity Research & Management, Clinical Research Unit, Department of Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2E1 Canada; , ,
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Fernández-Villar A, López-Campos JL, Represas Represas C, Marín Barrera L, Leiro Fernández V, López Ramírez C, Casamor R. Factors associated with inadequate diagnosis of COPD: On-Sint cohort analysis. Int J Chron Obstruct Pulmon Dis 2015; 10:961-7. [PMID: 26028969 PMCID: PMC4441359 DOI: 10.2147/copd.s79547] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND The purpose of this study was to evaluate the frequency of inadequate diagnosis and factors predictive of this in patients with chronic obstructive pulmonary disease (COPD) participating in the On-Sint study. METHODS The On-Sint cohort was recruited for a multicenter observational study in which 356 physicians (71.6% from primary care) included adult patients who had been diagnosed with COPD. Patients' clinical and functional information since diagnosis and details for the recruiting physicians were collected from patient files and at the inclusion visit. We performed a multivariate analysis to evaluate the influence of these variables on diagnostic inadequacy (absence of postbronchodilator forced expiratory volume in one second/forced vital capacity [FEV1/FVC] <0.70 or, if this value was missing, prebronchodilator FEV1/FVC <0.70). RESULTS In total, 1,214 patients were included in the study. The patients had a mean age of 66.4±9.7 years and 78.8% were male. In total, 51.3% of patients did not have an obstructive spirometry performed, and 21.4% had a normal or non-obstructive spirometry pattern. Patient-related factors associated with inadequate diagnosis were: years since diagnosis (odds ratio [OR] 1.03, 95% confidence interval [CI] 1.01-1.05), number of exacerbations in the previous year (OR 1.01, 95% CI 1.01-1.02), comorbidities (OR 1.05, 95% CI 1.01-1.015), and obesity (OR 1.06, 95% CI 1.02-1.10 per kg/m(2) of body mass index), while a longer smoking history (OR 0.98, 95% CI 0.97-0.99 for each pack/year) and short-acting or long-acting bronchodilator therapy (OR 0.61, 95% CI 0.44-0.76 and OR 0.46, 95% CI 0.27-0.76, respectively) were inversely related. With regard to physician-related variables, being followed up by primary care physicians (OR 3.0, 95% CI 2.11-4.34) and in rural centers (OR 1.63, 95% CI 1.12-2.38) were positively associated with an inadequate diagnosis, while having regular follow-ups in the most severe cases (OR 0.66, 95% CI 0.46-0.93) and use of quality of life questionnaires (OR 0.55, 95% CI 0.40-0.76) were negatively associated. CONCLUSION Diagnosis of COPD was inadequate in half of the patients from the On-Sint cohort. There were multiple factors, both patient-related and physician-related, associated with this misdiagnosis.
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Affiliation(s)
- Alberto Fernández-Villar
- Department of Pneumology, Complexo Hospitalario de Vigo, Instituto de Investigación Biomédica de Vigo, Vigo, Spain
| | - José Luis López-Campos
- Medical-Surgical Unit of Respiratory Diseases, Instituto de Biomedicina de Sevilla, Hospital Universitario Virgen del Rocío/Universidad de Sevilla, Seville, Spain ; Centro de Investigación Biomédica en Red de Respiratorio, Instituto de Salud Carlos III, Madrid, Spain
| | - Cristina Represas Represas
- Department of Pneumology, Complexo Hospitalario de Vigo, Instituto de Investigación Biomédica de Vigo, Vigo, Spain
| | - Lucía Marín Barrera
- Centro de Investigación Biomédica en Red de Respiratorio, Instituto de Salud Carlos III, Madrid, Spain
| | - Virginia Leiro Fernández
- Department of Pneumology, Complexo Hospitalario de Vigo, Instituto de Investigación Biomédica de Vigo, Vigo, Spain
| | - Cecilia López Ramírez
- Centro de Investigación Biomédica en Red de Respiratorio, Instituto de Salud Carlos III, Madrid, Spain
| | - Ricard Casamor
- Medical Department, Novartis Farmacéutica, Barcelona, Spain
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Toljamo T, Hamari A, Sotkasiira M, Nieminen P. Clinical characteristics of COPD syndrome: A 6-year follow-up study of adult smokers. Ann Med 2015; 47:399-405. [PMID: 26178878 DOI: 10.3109/07853890.2015.1045551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND There is little quantitative information about the development of chronic obstructive pulmonary disease (COPD) among adult smokers and of what happens to patients who have already developed COPD. OBJECTIVES To examine the development and performance of COPD status over time, and the clinical characteristics of new COPD cases according to the Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2007 and 2011 classifications. METHODS Healthy asymptomatic smokers were recruited through newspaper announcements. They filled in questionnaires and had an individualized assessment of their health history during all three visits (visit 1, visit 2 after three years, visit 3 after six years). RESULTS Of the eligible 621 heavy smokers, 572 attended visit 2. A total of 513 subjects completed the 6-year follow-up examination. According to GOLD 2007, COPD was present in 22.8% (n = 117) of these smokers. The severity of COPD changed during the years of follow-up. Furthermore, health status and prevalence of chronic respiratory symptoms both in the smokers with normal lung function and in the COPD groups varied over the time period. CONCLUSIONS GOLD 2011 recognized the complex patient subgroups better than GOLD 2007. Variability in chronic symptoms or in health status correlated poorly with the severity of airway limitation.
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Affiliation(s)
- Tuula Toljamo
- a Department of Pulmonary Medicine , Lapland Central Hospital , Rovaniemi , Finland
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