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Pignatti P, Visca D, Zappa M, Zampogna E, Saderi L, Sotgiu G, Centis R, Migliori GB, Spanevello A. Monitoring COPD patients: systemic and bronchial eosinophilic inflammation in a 2-year follow-up. BMC Pulm Med 2024; 24:247. [PMID: 38764008 PMCID: PMC11102620 DOI: 10.1186/s12890-024-03062-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 05/13/2024] [Indexed: 05/21/2024] Open
Abstract
BACKGROUND High blood eosinophils seem to predict exacerbations and response to inhaled corticosteroids (ICS) treatment in patients with chronic obstructive pulmonary disease (COPD). The aim of our study was to prospectively evaluate for 2 years, blood and sputum eosinophils in COPD patients treated with bronchodilators only at recruitment. METHODS COPD patients in stable condition treated with bronchodilators only underwent monitoring of lung function, blood and sputum eosinophils, exacerbations and comorbidities every 6 months for 2 years. ICS was added during follow-up when symptoms worsened. RESULTS 63 COPD patients were enrolled: 53 were followed for 1 year, 41 for 2 years, 10 dropped-out. After 2 years, ICS was added in 12/41 patients (29%) without any statistically significant difference at time points considered. Blood and sputum eosinophils did not change during follow-up. Only FEV1/FVC at T0 was predictive of ICS addition during the 2 year-follow-up (OR:0.91; 95% CI: 0.83-0.99, p = 0.03). ICS addition did not impact on delta (T24-T0) FEV1, blood and sputum eosinophils and exacerbations. After 2 years, patients who received ICS had higher blood eosinophils than those in bronchodilator therapy (p = 0.042). Patients with history of ischemic heart disease increased blood eosinophils after 2 years [p = 0.03 for both percentage and counts]. CONCLUSIONS Blood and sputum eosinophils remained stable during the 2 year follow-up and were not associated with worsened symptoms or exacerbations. Almost 30% of mild/moderate COPD patients in bronchodilator therapy at enrollment, received ICS for worsened symptoms in a 2 year-follow-up and only FEV1/FVC at T0 seems to predict this addition. History of ischemic heart disease seems to be associated with a progressive increase of blood eosinophils.
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Affiliation(s)
- Patrizia Pignatti
- Allergy and Immunology Unit, Istituti Clinici Scientifici Maugeri, IRCCS, Via S.Maugeri 10, Pavia, 27100, Italy.
| | - Dina Visca
- Division of Pulmonary Rehabilitation, Istituti Clinici Scientifici Maugeri, IRCCS, Tradate, Italy
- Department of Medicine and Surgery, Respiratory Diseases, University of Insubria, Varese- Como, Italy
| | - Martina Zappa
- Department of Medicine and Surgery, Respiratory Diseases, University of Insubria, Varese- Como, Italy
| | - Elisabetta Zampogna
- Division of Pulmonary Rehabilitation, Istituti Clinici Scientifici Maugeri, IRCCS, Tradate, Italy
| | - Laura Saderi
- Clinical Epidemiology and Medical Statistics Unit, Department of Biomedical Medicine, Surgery and Pharmacy Sciences, University of Sassari, Sassari, Italy
| | - Giovanni Sotgiu
- Clinical Epidemiology and Medical Statistics Unit, Department of Biomedical Medicine, Surgery and Pharmacy Sciences, University of Sassari, Sassari, Italy
| | - Rosella Centis
- Respiratory Diseases Clinical Epidemiology Unit, Istituti Clinici Scientifici Maugeri, IRCCS, Tradate, Italy
| | - Giovanni Battista Migliori
- Respiratory Diseases Clinical Epidemiology Unit, Istituti Clinici Scientifici Maugeri, IRCCS, Tradate, Italy
| | - Antonio Spanevello
- Division of Pulmonary Rehabilitation, Istituti Clinici Scientifici Maugeri, IRCCS, Tradate, Italy
- Department of Medicine and Surgery, Respiratory Diseases, University of Insubria, Varese- Como, Italy
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Liang L, Lin Y, Feng L, Shao S, Cao S, Rong H, Chu S, Xie W, Cai S, Wang J, Tong Z. Multicentre double-blind randomised controlled trial of systematic corticosteroid therapy in patients with acute exacerbations of chronic obstructive pulmonary disease admitted to hospital with higher eosinophil levels: the ECHO protocol. BMJ Open 2023; 13:e066354. [PMID: 37247957 PMCID: PMC10230870 DOI: 10.1136/bmjopen-2022-066354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 04/06/2023] [Indexed: 05/31/2023] Open
Abstract
INTRODUCTION Corticosteroid is one of the most commonly used medications in patients with acute exacerbations of chronic obstructive pulmonary disease (AECOPD). The increasing understanding of these side-effects of systematic corticosteroids and their better response to treatment among patients with COPD with higher blood eosinophil counts has led to an interest in a more targeted approach to systematic corticosteroid treatment. However, there is a lack of evidence from high-quality randomised controlled trial (RCT) studies about whether initial systematic corticosteroids should be given to patients with AECOPD with elevated eosinophilia. The aim of the present research was to test this hypothesis. METHODS AND ANALYSIS This is a multicentre, double-blind, superiority RCT in the respiratory departments of 12 general hospitals in China. It is anticipated that 456 patients with AECOPD with a blood eosinophil count >2% or >300 cells/µL at admission will be recruited. Eligible patients will be randomised (1:1) to the intervention group receiving 40 mg oral prednisone daily or identical-appearing placebo (control group) for five consecutive days. Follow-up visits are performed during hospitalisation, followed by clinic interviews on days 30, 60 and 90 after discharge. The primary outcome is treatment failure rates comprising requiring or receiving invasive or non-invasive mechanical ventilation, requiring or transferring to intensive care unit during the index hospitalisation, length of index hospitalisation longer than 14 days, death during the index hospitalisation or within 30 days after discharge and readmission with acute exacerbations of COPD within 30 days after discharge. The results of this trial will provide insight into the value of using blood eosinophil counts as a biomarker of eosinophilic exacerbation and initiating systematic corticosteroid treatment for patients with AECOPD with higher eosinophil levels. ETHICS AND DISSEMINATION This study was approved by Beijing Chaoyang Hospital Institutional Review Board (approval number: 2020-KE-544) and the main results and secondary results will be published in peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT05059873.
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Affiliation(s)
- Lirong Liang
- Department of Clinical Epidemiology, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Yingxiang Lin
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Lin Feng
- Department of Clinical Epidemiology, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Shuai Shao
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Siyu Cao
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Hengmo Rong
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Shuilian Chu
- Department of Clinical Epidemiology, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
| | - Wuxiang Xie
- Peking University Clinical Research Institute, Peking University First Hospital, Peking University, Beijing, China
| | - Samuel Cai
- Department of Health Sciences, University of Leicester, Leicester, UK
| | - Jiawen Wang
- Department of Biostatistics & Epidemiology, Boston University School of Public Health, Boston, Massachusetts, USA
| | - Zhaohui Tong
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
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3
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Beech A, Portacci A, Herrero-Cortina B, Mathioudakis AG, Gotera C, Uller L, Ricciardolo FLM, Pobeha P, Snelgrove RJ, Braunstahl GJ, Bossios A, Usmani O, Ananth S. ERS International Congress 2022: highlights from the Airway Diseases Assembly. ERJ Open Res 2023; 9:00034-2023. [PMID: 37228280 PMCID: PMC10204859 DOI: 10.1183/23120541.00034-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/15/2023] [Indexed: 05/27/2023] Open
Abstract
The European Respiratory Society (ERS) celebrated the return of an in-person meeting in Barcelona, Spain, after 2 years of virtual congresses. The ERS Congress 2022 programme was replete with symposia, skills workshops and abstract presentations from all 14 assemblies, encompassing over 3000 abstracts presented in the form of thematic poster discussion and oral presentations. In this article, highlights from the ERS Congress 2022 (including from thematic poster sessions, oral presentations and symposia from keynote speakers), presented by Assembly 5 (Airway diseases, asthma, COPD and chronic cough), are reviewed by Early Career Members and experts in the field, with the aim of presenting key recent findings in the field.
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Affiliation(s)
- Augusta Beech
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
- Medicines Evaluation Unit, Manchester University NHS Foundation Trust, Manchester, UK
| | - Andrea Portacci
- Institute of Respiratory Disease, Department of Basic Medical Science, Neuroscience and Sense Organs, University “Aldo Moro”, Bari, Italy
| | - Beatrice Herrero-Cortina
- Universidad San Jorge, Zaragoza, Spain
- Hospital Clínico Universitario Lozano Blesa, Instituto de Investigación Sanitaria de Aragón, Zaragoza, Spain
| | - Alexander G. Mathioudakis
- North West Lung Centre, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | | | | | - Fabio Luigi Massimo Ricciardolo
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
- Institute of Translational Pharmacology, National Research Council (IFT-CNR), Palermo, Italy
| | - Pavol Pobeha
- Pavol Jozef Safarik University, Kosice, Slovakia
| | | | | | - Apostolos Bossios
- Department of Respiratory Medicine and Allergy, Karolinska University Hospital Huddinge, Stockholm, Sweden
- Division for Lung and Airway Research, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Omar Usmani
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Sachin Ananth
- Guy's and St Thomas's NHS Foundation Trust, London, UK
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LeMaster WB, Quibrera PM, Couper D, Tashkin DP, Bleecker ER, Doerschuk CM, Ortega VE, Cooper C, Han MK, Woodruff PG, O'Neal WK, Anderson WH, Alexis NE, Bowler RP, Barr RG, Kaner RJ, Dransfield MT, Paine R, Kim V, Curtis JL, Martinez FJ, Hastie AT, Barjaktarevic I. Clinical Implications of Low Absolute Blood Eosinophil Count in the SPIROMICS COPD Cohort. Chest 2023; 163:515-528. [PMID: 36343688 PMCID: PMC10083128 DOI: 10.1016/j.chest.2022.10.029] [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: 05/12/2022] [Revised: 10/17/2022] [Accepted: 10/30/2022] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND The Global Initiative for Chronic Obstructive Lung Disease (GOLD) considers blood eosinophil counts < 100 cells/μL (BEC≤100) in people with COPD to predict poor inhaled corticosteroid (ICS) responsiveness. However, the BEC≤100 phenotype is inadequately characterized, especially in advanced COPD. RESEARCH QUESTION Are there differences between GOLD group D patients with high BEC and those with low BEC regarding baseline characteristics and longitudinal outcomes? STUDY DESIGN AND METHODS We used multivariable mixed models and logistic regression to contrast clinical characteristics and outcomes of BEC≤100 vs BEC > 100 (BEC100+) in all subjects with COPD (n = 1,414) and GOLD group D subjects (n = 185) not receiving ICS. RESULTS We identified n = 485 with BEC≤100 (n = 61 GOLD group D) and n = 929 people with BEC100+ (n = 124 GOLD group D). BEC≤100 status was stable at 6 weeks and approximately 52 weeks (intraclass correlations of 0.78 and 0.71, respectively). Compared with BEC100+, BEC≤100 comprised more women, with greater current smoking, and less frequent childhood asthma. Among all analyzed participants, the two BEC-defined subsets showed similar rates of lung function decline (mean slope, BEC≤100 vs BEC100+, -50 vs -39 mL/y; P = .140), exacerbations (0.40 vs 0.36/y; P = .098), subsequent ICS initiation (2.5% vs 4.4%; P = .071), and mortality (7.8% vs 8.4%; P = .715). However, in GOLD group D, people with BEC≤100 showed higher exacerbation rates within 365 days of enrollment (0.62 vs 0.33/y; P = .002) and total follow-up (1.16 vs 0.83/y; P = .014). They also had greater lung function decline (mean slope of -68 mL/y vs -23 mL/y; P = .036) and had greater emphysema at baseline (voxels < 950 Hounsfield units at total lung capacity of 7.46% vs 4.61%; P = .029). INTERPRETATION In non-ICS-treated GOLD group D COPD, people with BEC≤100 had more baseline emphysema, prospective exacerbations, and lung function decline. Our analysis has identified a particularly vulnerable subpopulation of people with COPD, suggesting the need for studies focused specifically on their therapeutic treatment. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov; No.: NCT01969344; URL: www. CLINICALTRIALS gov.
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Affiliation(s)
- W Blake LeMaster
- Division of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University, Nashville, TN
| | | | | | - Donald P Tashkin
- Division of Pulmonary and Critical Care Medicine, UCLA, Los Angeles, CA
| | | | | | - Victor E Ortega
- Division of Respiratory Medicine, Department of Internal Medicine, Mayo Clinic, Scottsdale, AZ
| | | | - MeiLan K Han
- University of Michigan School of Medicine, Ann Arbor, MI
| | - Prescott G Woodruff
- Department of Medicine, University of California, San Francisco, San Francisco, CA
| | | | | | | | | | - R Graham Barr
- Presbyterian Hospital, Columbia University Medical Center, New York, NY
| | | | - Mark T Dransfield
- University of Alabama Birmingham and Birmingham VA Medical Center, Birmingham, AL
| | | | - Victor Kim
- Department of Thoracic Medicine and Surgery, Temple Lung Center, Philadelphia, PA
| | - Jeffrey L Curtis
- University of Michigan School of Medicine, Ann Arbor, MI; Medical Service, VA Ann Arbor Healthcare System, Ann Arbor, MI
| | | | - Annette T Hastie
- Atrium Health Wake Forest Baptist, School of Medicine, Winston Salem, NC
| | - Igor Barjaktarevic
- Division of Pulmonary and Critical Care Medicine, UCLA, Los Angeles, CA.
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5
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Gong Y, Sun H. Stability of Blood Eosinophils in COPD with Multiple Acute Exacerbations Within 1 Year and Its Relationship with Prognosis. Int J Chron Obstruct Pulmon Dis 2022; 17:3123-3128. [PMID: 36582652 PMCID: PMC9792810 DOI: 10.2147/copd.s392660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Background The relationship between increased blood eosinophils (EOS) and the prognosis of patients with chronic obstructive pulmonary disease (COPD) remains controversial. We aimed to explore the stability of blood eosinophils in patients with multiple hospitalizations for acute exacerbations of chronic obstructive pulmonary disease (AECOPD) over a 1-year period and its relationship with readmission rates and mortality. Methods Prospectively include patients with at least 2 hospitalizations for AECOPD in 1 year between June 2019 and December 2021. Using 150 cells/ul as the cut-off value, the study population was divided into EOS, non-EOS, and fluctuating groups based on the longitudinal stability of blood EOS. The relationship between blood EOS and readmission rate and mortality was analyzed according to the 6-month follow-up after hospital discharge. Results A total of 202 patients were included. 48, 108, and 46 patients were in the EOS, non-EOS, and fluctuating groups, respectively. The stability of blood EOS at 1 year was 77.2%. The risk of death was lower in the EOS group compared to the non-EOS group (HR=0.323, 95% CI 0.113-0.930, P =0.036). The risk of readmission was lower in both the EOS group (HR=0.486, 95% CI 0.256-0.923, P =0.027) and the non-EOS group (HR=0.575, 95% CI 0.347-0.954, P = 0.032) than in the fluctuating group. Conclusion The blood EOS of COPD patients is relatively stable over 1 year. Patients with consistently high blood EOS had a lower risk of all-cause mortality after discharge; patients with fluctuating blood EOS had a higher risk of readmission.
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Affiliation(s)
- Yaya Gong
- Department of Respiratory Medicine, Anhui No.2 Provincial People’s Hospital, Hefei, People’s Republic of China
| | - Hongyan Sun
- Department of Respiratory Medicine, Anhui No.2 Provincial People’s Hospital, Hefei, People’s Republic of China,Correspondence: Hongyan Sun, Department of Respiratory Medicine, Anhui No.2 Provincial People’s Hospital, Hefei, Anhui, 230001, People’s Republic of China, Tel +86 13856934496, Email
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6
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Jo YS, Rhee CK, Yoon HK, Park CK, Lim JU, Joon AT, Hur J. Evaluation of asthma-chronic obstructive pulmonary disease overlap using a mouse model of pulmonary disease. J Inflamm (Lond) 2022; 19:25. [PMID: 36474247 PMCID: PMC9728005 DOI: 10.1186/s12950-022-00322-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Features of asthma and chronic obstructive pulmonary disease (COPD) can coexist in the same patient, in a condition termed asthma- chronic obstructive pulmonary disease overlap (ACO). ACO is heterogeneous condition exhibiting various combinations of asthma and COPD features. No clinically acceptable experimental model of ACO has been established. We aimed to establish an animal model of ACO. METHODS We generated two phenotypes of ACO by administering ovalbumin and porcine pancreatic elastase in combination, and papain. The proinflammatory cytokines and cell types in bronchoalveolar lavage fluid (BALF) were investigated, and lung function parameters were measured using the FlexiVent system. RESULTS Greater airway inflammation was observed in the asthma and both ACO models, and emphysema was found in the COPD and both ACO models. The proportion of eosinophils in BALF was elevated in the asthma and ACO-a model. Type 2 inflammatory cytokine levels were highest in the ACO-a model, and the neutrophil gelatinase-associated lipocalin level was elevated in the asthma and ACO-a model. Of lung function parameters, compliance was greater in the COPD and ACO-b model, in which elastance was lower than in the asthma model. Airway resistance increased with the methacholine concentration in the asthma and both ACO models, but not in the control or COPD model. CONCLUSION We established two murine models of ACO that exhibit features of asthma and COPD. We validated the clinical relevance of the ACO models based on changes in cytokine profiles and lung function. These models will be useful in further studies of the pathogenesis of, and therapeutic targets for ACO.
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Affiliation(s)
- Yong Suk Jo
- grid.411947.e0000 0004 0470 4224Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Chin Kook Rhee
- grid.411947.e0000 0004 0470 4224Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Hyoung Kyu Yoon
- grid.411947.e0000 0004 0470 4224Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yeouido St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Chan Kwon Park
- grid.411947.e0000 0004 0470 4224Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yeouido St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jeong Uk Lim
- grid.411947.e0000 0004 0470 4224Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yeouido St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - An Tai Joon
- grid.411947.e0000 0004 0470 4224Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Yeouido St Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jung Hur
- grid.411947.e0000 0004 0470 4224Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
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7
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Identification of COPD Inflammatory Endotypes Using Repeated Sputum Eosinophil Counts. Biomedicines 2022; 10:biomedicines10102611. [PMID: 36289873 PMCID: PMC9599170 DOI: 10.3390/biomedicines10102611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/10/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022] Open
Abstract
Higher blood and sputum eosinophil counts are associated with a greater response to corticosteroids in COPD. Low blood eosinophil counts exhibit greater stability over time whereas higher counts demonstrate more variability. Stability of airway eosinophil levels is less well understood. We have studied the stability of sputum eosinophil counts. Differential cell count data for COPD patients (n = 100) were analysed. Subjects with two sputum eosinophil counts, 6 months apart, were included in the analysis. Patients were stratified based on baseline sputum eosinophil count into ‘low’, ‘intermediate’ and ‘high’ groups: eosinophilLOW (<1%), eosinophilINT (1−3%) and eosinophilHIGH (≥3%). Sputum eosinophil counts showed good stability (rho = 0.61, p < 0.0001, ICC of 0.77), with 67.4% of eosinophilLOW patients remaining in the same category on repeat sampling. Bland−Altman analysis of the whole cohort (median difference between measurements = 0.00%, 90th percentile = −1.4 and 4.7%) showed greater variation at higher counts. This was confirmed by the wider 90th centiles in the eosinophilINT (−1.50 to 5.65) and eosinophilHIGH groups (−5.33 to 9.80) compared to the eosinophilLOW group (−0.40 to 1.40). The repeatability of sputum eosinophil counts was related to the baseline eosinophil count; sputum eosinophilLOW COPD patients were relatively stable over time, while the eosinophilHIGH group showed greater variability. These results can facilitate the identification of COPD endotypes with differential responses to treatment.
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Celli BR, Singh D, Vogelmeier C, Agusti A. New Perspectives on Chronic Obstructive Pulmonary Disease. Int J Chron Obstruct Pulmon Dis 2022; 17:2127-2136. [PMID: 36097591 PMCID: PMC9464005 DOI: 10.2147/copd.s365771] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 08/02/2022] [Indexed: 11/23/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a major cause of morbidity and mortality worldwide; many recent advances have been made in many aspects of the disease. The aim of this article is to illustrate and discuss some of these advances in the management of different types of patients. Large-scale trials have confirmed that long-acting bronchodilator therapy, particularly using the combination of LABA/LAMA, remains the mainstay of COPD treatment, with special attention being paid to careful selection of inhaler devices. The initial choice of pharmacological therapy is based on the GOLD ABCD grouping of patients. It is very important to stress that there is a need to implement a management cycle because COPD is a chronic disease with varying clinical course and a high number of potential comorbidities that may affect morbidity and mortality. Therefore, regular reevaluation of the patient is mandatory. This allows identification of characteristics aimed at maximizing the benefits for a specific patient or a subset of patients. Within this context, the role of the blood eosinophil count as a marker of inhaled corticosteroids response to prevent future exacerbations in patients who, despite appropriate bronchodilator therapy, still suffer from them has been proven to be a useful simple biomarker in medication selection. These advances support the concept of precision medicine, with the goal that patients get the right medicine at the right time for the right reason. Finally, recent studies have shown that early life events may be of critical relevance for the development of COPD. With this as a background, concepts to identify individuals at risk and early identification of cases have become an important objective of current research with the hope of maximizing the effects of therapy and the possibility of impacting disease progression.
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Affiliation(s)
| | - Dave Singh
- Division of Infection, Immunity & Respiratory Medicine, University of Manchester, Manchester University NHS Hospital Trust, Manchester, UK
| | - Claus Vogelmeier
- Department of Medicine, Pulmonary and Critical Care Medicine, German Center for Lung Research (DZL), University of Marburg, Marburg, Germany
| | - Alvar Agusti
- Respiratory Institute, Hospital Clinic, University of Barcelona, IDIBAPS, CIBERES, Barcelona, Spain
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9
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[COPD and eosinophils]. Rev Mal Respir 2022; 39:685-697. [PMID: 36055950 DOI: 10.1016/j.rmr.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/07/2022] [Indexed: 11/23/2022]
Abstract
COPD is a major cause of morbidity and mortality worldwide. As research progresses, new patient phenotypes are being defined, providing hope for more personalized management of the disease. A significant proportion of patients present with an increased level of blood eosinophils, which may reflect bronchial eosinophilic inflammation. The aims of this article are to characterize the role of eosinophils in COPD in terms of pathophysiology, associated respiratory symptoms, impact on treatment and, finally, to consider different future treatment options.
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10
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Antus B, Barta I. Blood Eosinophils and Exhaled Nitric Oxide: Surrogate Biomarkers of Airway Eosinophilia in Stable COPD and Exacerbation. Biomedicines 2022; 10:biomedicines10092128. [PMID: 36140229 PMCID: PMC9496115 DOI: 10.3390/biomedicines10092128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/28/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022] Open
Abstract
In recent years, tremendous efforts have been devoted to characterizing the inflammatory processes in chronic obstructive pulmonary disease (COPD) in order to provide more personalized treatment for COPD patients. While it has proved difficult to identify COPD-specific inflammatory pathways, the distinction between eosinophilic and non-eosinophilic airway inflammation has gained clinical relevance. Evidence has shown that sputum eosinophil counts are increased in a subset of COPD patients and that these patients are more responsive to oral or inhaled corticosteroid therapy. Due to feasibility issues associated with sputum cell profiling in daily clinical practice, peripheral blood eosinophil counts and fractional exhaled nitric oxide levels have been evaluated as surrogate biomarkers for assessing the extent of airway eosinophilia in COPD patients, both in stable disease and acute exacerbations. The diagnostic value of these markers is not equivalent and depends heavily on the patient’s condition at the time of sample collection. Additionally, the sensitivity and specificity of these tests may be influenced by the patient’s maintenance treatment. Overall, eosinophilic COPD may represent a distinct disease phenotype that needs to be further investigated in terms of prognosis and treatment outcomes.
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Affiliation(s)
- Balazs Antus
- Department of Pathophysiology, National Koranyi Institute of Pulmology, Koranyi Frigyes Ut 1, 1121 Budapest, Hungary
- Department of Pulmonology, National Koranyi Institute of Pulmology, Koranyi Frigyes Ut 1, 1121 Budapest, Hungary
- Correspondence: ; Tel.: +36-1-391-3309
| | - Imre Barta
- Department of Pathophysiology, National Koranyi Institute of Pulmology, Koranyi Frigyes Ut 1, 1121 Budapest, Hungary
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11
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Christenson SA, Smith BM, Bafadhel M, Putcha N. Chronic obstructive pulmonary disease. Lancet 2022; 399:2227-2242. [PMID: 35533707 DOI: 10.1016/s0140-6736(22)00470-6] [Citation(s) in RCA: 190] [Impact Index Per Article: 95.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 02/16/2022] [Accepted: 02/25/2022] [Indexed: 12/14/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is a major cause of morbidity, mortality, and health-care use worldwide. COPD is caused by exposure to inhaled noxious particles, notably tobacco smoke and pollutants. However, the broad range of factors that increase the risk of development and progression of COPD throughout the life course are increasingly being recognised. Innovations in omics and imaging techniques have provided greater insight into disease pathobiology, which might result in advances in COPD prevention, diagnosis, and treatment. Although few novel treatments have been approved for COPD in the past 5 years, advances have been made in targeting existing therapies to specific subpopulations using new biomarker-based strategies. Additionally, COVID-19 has undeniably affected individuals with COPD, who are not only at higher risk for severe disease manifestations than healthy individuals but also negatively affected by interruptions in health-care delivery and social isolation. This Seminar reviews COPD with an emphasis on recent advances in epidemiology, pathophysiology, imaging, diagnosis, and treatment.
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Affiliation(s)
- Stephanie A Christenson
- Division of Pulmonary, Critical Care, Allergy, and Sleep Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Benjamin M Smith
- Department of Medicine, Columbia University Medical Center, New York, NY, USA; Department of Medicine, McGill University Health Centre, Montreal, QC, Canada
| | - Mona Bafadhel
- School of Immunology and Microbial Sciences, Faculty of Life Sciences and Medicine, King's College London, London, UK; Department of Respiratory Medicine, Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Nirupama Putcha
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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12
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Cazzola M, Ora J, Calzetta L, Rogliani P, Matera MG. Advances in inhaled corticosteroids for the treatment of chronic obstructive pulmonary disease: what is their value today? Expert Opin Pharmacother 2022; 23:917-927. [PMID: 35575510 DOI: 10.1080/14656566.2022.2076592] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION As of today, there is still a need to determine which COPD patients may benefit from ICS therapy, whether ICSs are useful in COPD patients without chronic bronchitis, and whether long-acting bronchodilators can reduce the risk of exacerbations in frequent exacerbators even if ICSs are not used, and whether combination therapy including ICSs is helpful in infrequent exacerbators to optimise the use of ICSs in COPD. Nevertheless, in recent years, a fair amount of evidence has been produced that, at least in part, can help define the role of ICSs in COPD better. AREAS COVERED Herein, the authors provide an overview of current use of ICS in COPD and discuss their value to the current treatment armamentarium. The article includes discussion of which patients will benefit best from the use of ICSs, their potential uses and adverse effects. EXPERT OPINION There is growing agreement on why, in whom, and when ICS therapy can be used in COPD, although the consensus is still lacking because of the heterogeneity of COPD. The use of blood eosinophil counts (BECs) is only helpful in T2 inflammation, while there is a lack of biomarkers indicating the presence of T1 and T17 immunity, which is poorly responsive to ICS. Identifying ICS-sensitive endotypes using specific biomarkers that have yet to be identified and validated is likely to demonstrate that ICSs can influence the natural course of COPD in at least a subset of patients.
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Affiliation(s)
- Mario Cazzola
- Unit of Respiratory Medicine, Department of Experimental Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - Josuel Ora
- Unit of Respiratory Medicine, "Tor Vergata" Hospital Foundation, Rome, Italy
| | - Luigino Calzetta
- Unit of Respiratory Diseases and Lung Function, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Paola Rogliani
- Unit of Respiratory Medicine, Department of Experimental Medicine, University of Rome "Tor Vergata", Rome, Italy.,Unit of Respiratory Medicine, "Tor Vergata" Hospital Foundation, Rome, Italy
| | - Maria Gabriella Matera
- Unit of Pharmacology, Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
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13
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Ancel J, Guecamburu M, Marques Da Silva V, Schilfarth P, Boyer L, Pilette C, Martin C, Devillier P, Berger P, Zysman M, Le Rouzic O, Gonzalez-Bermejo J, Degano B, Burgel PR, Ahmed E, Roche N, Deslee G. [Take-home messages from the COPD 2021 biennial of the French Society of Respiratory Diseases. Understanding to so as to better innovate]. Rev Mal Respir 2022; 39:427-441. [PMID: 35568574 DOI: 10.1016/j.rmr.2022.03.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 03/23/2022] [Indexed: 02/07/2023]
Abstract
INTRODUCTION The first COPD biennial organized by the French Society of Respiratory Diseases (SPLF) took place on 17 December 2021. STATE OF THE ART The objective of the biennial was to discuss current knowledge regarding COPD pathophysiology, current treatments, research development, and future therapeutic approaches. PERSPECTIVES The different lecturers laid emphasis on the complexity of pathophysiologic mechanisms including bronchial, bronchiolar and parenchymal alterations, and also dwelt on the role of microbiota composition in COPD pathenogenesis. They pointed out that addition to inhaled treatments, ventilatory support and endoscopic approaches have been increasingly optimized. The development of new therapeutic pathways such as biotherapy and cell therapy (stem cells…) call for further exploration. CONCLUSIONS The dynamism of COPD research was repeatedly underlined, and needs to be further reinforced, the objective being to "understand so as to better innovate" so as to develop effective new strategies for treatment and management of COPD.
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Affiliation(s)
- J Ancel
- Inserm UMRS-1250, service de pneumologie, université Reims Champagne Ardenne, hôpital Maison Blanche, Reims, France
| | - M Guecamburu
- Service des maladies respiratoires, hôpital du Haut-Lévêque, CHU de Bordeaux, Bordeaux, France
| | - V Marques Da Silva
- Inserm U955, FHU SENEC, université Paris-Est Créteil, institut Mondor de recherche biomédicale, équipe GEIC2O, Créteil, France
| | - P Schilfarth
- Service des maladies respiratoires, hôpital du Haut-Lévêque, CHU de Bordeaux, Bordeaux, France; Inserm U1045, centre de recherche cardio-thoracique de Bordeaux, Pessac, France
| | - L Boyer
- Département de physiologie-explorations fonctionnelles, université Paris-Est, hôpital Henri-Mondor, AP-HP, UMR S955, FHU SENEC, UPEC, Créteil, France
| | - C Pilette
- Département de pneumologie, université catholique de Louvain, cliniques universitaires Saint-Luc et institut de recherche expérimentale et clinique, Bruxelles, Belgique
| | - C Martin
- Inserm U1016, service de pneumologie, AP-HP Paris, hôpital Cochin et institut Cochin, université de Paris, Paris, France
| | - P Devillier
- Département des maladies respiratoires, unité de recherche en pharmacologie respiratoire, VIM Suresnes (UMR 0892, université Paris-Saclay), hôpital Foch, Suresnes, France
| | - P Berger
- Service d'exploration fonctionnelle respiratoire, département de pharmacologie, centre de recherche cardiothoracique, U1045, CIC 1401, Pessac, France
| | - M Zysman
- Service des maladies respiratoires, hôpital du Haut-Lévêque, CHU de Bordeaux, Bordeaux, France; Inserm U1045, centre de recherche cardio-thoracique de Bordeaux, Pessac, France
| | - O Le Rouzic
- Inserm, CIIL Center for infection and immunity of Lille, université de Lille, CHU de Lille, pneumologie et immuno-allergologie, Institut Pasteur de Lille, U1019 - UMR9017, Lille, France
| | - J Gonzalez-Bermejo
- Inserm, UMRS115 neurophysiologie respiratoire expérimentale et clinique, service de pneumologie, médecine intensive et réanimation (département R3S), Sorbonne université, groupe hospitalier universitaire AP-HP, Sorbonne Université, site Pitié-Salpêtrière, Paris, France
| | - B Degano
- Inserm 1042, service de pneumologie physiologie, CHU de Grenoble, Grenoble, France
| | - P-R Burgel
- Inserm U1016, service de pneumologie, AP-HP Paris, hôpital Cochin et institut Cochin, université de Paris, Paris, France
| | - E Ahmed
- Département des maladies respiratoires, IRMB, université de Montpellier, CHU de Montpellier, Montpellier, France
| | - N Roche
- Inserm U1016, service de pneumologie, AP-HP Paris, hôpital Cochin et institut Cochin, université de Paris, Paris, France
| | - G Deslee
- Inserm UMRS-1250, service de pneumologie, université Reims Champagne Ardenne, hôpital Maison Blanche, Reims, France.
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14
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Vogelmeier CF, Worth H, Buhl R, Criée CP, Gückel E, Kardos P. Impact of switching from triple therapy to dual bronchodilation in COPD: the DACCORD ‘real world’ study. Respir Res 2022; 23:109. [PMID: 35501806 PMCID: PMC9059416 DOI: 10.1186/s12931-022-02037-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 04/13/2022] [Indexed: 11/10/2022] Open
Abstract
Introduction Chronic obstructive pulmonary disease (COPD) guidelines recommend reserving triple therapy of inhaled corticosteroid (ICS), long-acting β2-agonist (LABA) and long-acting muscarinic antagonist (LAMA) for patients with exacerbations despite dual therapy. However, many patients receive triple therapy without a clear indication. For these patients, it would be useful to know whether ICS can be withdrawn. Methods DACCORD was a longitudinal, non-interventional ‘real-world’ study in three cohorts. This manuscript describes the results of Cohort 3, which recruited patients with COPD who had received triple therapy for ≥ 6 months. Prior to entry, each patient’s physician decided to continue triple therapy, or switch to a LABA/LAMA; patients were then followed for 12 months, with exacerbations and COPD Assessment Test (CAT) data recorded every 3 months. The primary endpoint was the time until COPD worsening, defined as the occurrence of a moderate/severe exacerbation or clinically relevant CAT worsening. Results Of the 1192 patients recruited into the study, 967 completed the end-of-study visit and ≥ 2 of the three interim visits, 292 and 675 receiving LABA/LAMA and triple therapy, respectively. Most baseline demographics were similar between the two groups. A lower proportion of patients in the LABA/LAMA group had COPD worsening than with triple therapy (32.5% vs 55.7% at 12 months), with the time to worsening extended in the LABA/LAMA group (hazard ratio 2.004, p < 0.001). In addition, a significantly lower proportion of patients in the LABA/LAMA group exacerbated (18.5% vs 28.7%; p < 0.001), accompanied by a greater improvement from baseline in CAT total score. Overall, fewer patients in the LABA/LAMA group reported adverse events than in the triple therapy group (12.9% vs 15.1%). Conclusions These results suggest that in a real world setting physicians are able to identify patients who can be ‘stepped down’ from triple therapy to LABA/LAMA. Following step down, there was no overall decline in COPD—indeed, some patients had better outcomes.
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15
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Stability of blood eosinophils in acute exacerbation of chronic obstructive pulmonary disease and its relationship to clinical outcomes: a prospective cohort study. Respir Res 2021; 22:301. [PMID: 34819051 PMCID: PMC8611944 DOI: 10.1186/s12931-021-01888-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 11/04/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The clinical value of blood eosinophils and their stability in chronic obstructive pulmonary disease (COPD) remains controversial. There are limited studies on association between the stability of blood eosinophils in acute exacerbation of COPD (AECOPD) and clinical outcomes. This study aimed to evaluate the stability of blood eosinophils in hospitalized AECOPD and its relationship to clinical outcomes. METHODS This prospective observational study recruited patients hospitalized with AECOPD from November 2016 to July 2020. The eligible patients were divided into four groups according to their blood eosinophil counts at admission and discharge: persistently < 300 cells/μl (LL), < 300 cells/μl at admission but ≥ 300 cells/µl at discharge (LH), ≥ 300 cells/μl at admission but < 300 cells/µl at discharge (HL), and persistently ≥ 300 cells/μl (HH). Cox hazard analyses were used to study the association between eosinophil changes and exacerbations or mortality. RESULTS In 530 patients included, 90 (17.0%) had a high blood eosinophil count (BEC) ≥ 300 cells/µl at admission but 32 (35.6%) of them showed a decreased BEC at discharge. The proportions and distribution for group LL, LH, HL, and HH were 381 (71.9%), 59 (11.1%), 32 (6.0%), and 58 (10.9%), respectively. During hospitalization, the LH group had a higher C-reactive protein level, higher rate of intensive care unit (ICU) admission, and higher total cost. The length of hospital stay of the LH group was longer compared with group LL, HL, or HH (P = 0.002, 0.017, and 0.001, respectively). During a follow-up of 12 months, the HH group was associated with a higher risk of moderate-to-severe exacerbations compared to the LL group (hazard ratio 2.00, 95% confidence interval 1.30-3.08, P = 0.002). Eosinophil changes had no significant association with mortality at 12 months. Sensitivity analyses in patients without asthma and without use of systemic corticosteroids prior to admission did not alter the results. CONCLUSIONS More attention should be paid to the LH group when evaluating the short-term prognosis of AECOPD. A persistently high BEC was a risk factor for long-term exacerbations. Eosinophil changes during hospitalization could help to predict outcomes.
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Abstract
Recent therapeutic advances in the management of asthma have underscored the importance of eosinophilia and the role of pro-eosinophilic mediators such as IL-5 in asthma. Given that a subset of patients with COPD may display peripheral eosinophilia similar to what is observed in asthma, a number of recent studies have implied that eosinophilic COPD is a distinct entity. This review will seek to contrast the mechanisms of eosinophilia in asthma and COPD, the implications of eosinophilia for disease outcome, and review current data regarding the utility of peripheral blood eosinophilia in the management of COPD patients.
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17
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Tomaich A, Klatt S, Nagy MW. Narrative Literature Review Guided Approach of Inhaled Corticosteroid de-escalation in Chronic Obstructive Pulmonary Disease. J Pharm Pract 2021; 36:628-639. [PMID: 34697964 DOI: 10.1177/08971900211053771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To review the 2020 Global Initiative for Chronic Obstructive Lung Disease (GOLD) report recommendations and create an algorithm to assist clinicians in determining which chronic obstructive pulmonary disease (COPD) patients qualify for inhaled corticosteroid (ICS) de-escalation. Data Sources: A literature search of MEDLINE/PubMed from 2002 to August 2021 was conducted using the search terms inhaled corticosteroids, chronic obstructive pulmonary disease, and de-escalation and review of the reference lists of identified articles for pertinent citations. STUDY SELECTION AND DATA EXTRACTION Relevant studies and articles were included if they focused on the utilization of ICS in COPD. DATA SYNTHESIS The 2020 GOLD report only recommends triple therapy with ICS, long acting beta agonists, and long acting muscarinic antagonists for patients with frequent exacerbations, frequent hospitalizations, or elevated blood eosinophil counts. Despite this clear framework, patients are prescribed ICS without these characteristics. Available evidence suggests that these patients can be de-escalated from ICS therapy without concern for worsening lung function or exacerbations. Relevance to Patient Care and Clinical Practice: Patients with COPD may be experiencing more risk than benefit on ICS therapy. Clinicians should be knowledgeable on how to evaluate patient therapy for appropriateness and know how to safely deprescribe ICS given their limited efficacy in many COPD patients. CONCLUSION There remains no specific guidance on how to de-escalate patients off an ICS when the therapy is not indicated. Use of clinical evidence with stepwise algorithms can be models to approach de-escalation of ICS in patients with COPD.
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Affiliation(s)
- Anamarie Tomaich
- Medical College of Wisconsin School of Pharmacy, Milwaukee WI, USA.,Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee WI, USA
| | - Shawnee Klatt
- Medical College of Wisconsin School of Pharmacy, Milwaukee WI, USA.,Ascension St Joseph Hospital, Milwaukee WI, USA
| | - Michael W Nagy
- Medical College of Wisconsin School of Pharmacy, Milwaukee WI, USA.,Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee WI, USA
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18
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Ellingsen J, Janson C, Bröms K, Lisspers K, Ställberg B, Högman M, Malinovschi A. Neutrophil-to-lymphocyte ratio, blood eosinophils and COPD exacerbations: a cohort study. ERJ Open Res 2021; 7:00471-2021. [PMID: 34988219 PMCID: PMC8711083 DOI: 10.1183/23120541.00471-2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/24/2021] [Indexed: 11/11/2022] Open
Abstract
Background Blood neutrophil-to-lymphocyte ratio (NLR) and blood eosinophils (B-Eos) are emerging biomarkers in COPD. This study examined whether they could predict acute exacerbations of COPD (AECOPDs), and determined their longitudinal stability. Methods In this closed cohort study, Swedish subjects with spirometry-verified COPD attended three yearly visits in a stable phase of the disease. Blood cell counts, spirometry and questionnaire-assessed AECOPD-history (worsening of COPD leading to an unscheduled visit and/or use of antibiotics and/or oral corticosteroids) were collected at each visit. Results Of 466 included subjects 57% were female. Baseline mean±sd forced expiratory volume in 1 s was 58±17% predicted. High NLR (≥3.0) was more common in subjects with previous AECOPDs than in those without (33.5% versus 20.4%, p=0.002). In two-level mixed-effects logistic regression models adjusted for confounders, NLR as a continuous variable (OR 1.20, 95% CI 1.04–1.38) and B-Eos ≥300 cells·µL−1 (OR 1.54, 95% CI 1.06–2.24) were associated with future AECOPDs. In 386 subjects with blood cell data available at all three visits, the intraclass correlation coefficient for NLR was 0.61 (95% CI 0.56–0.66) and for B-Eos 0.69 (95% CI 0.64–0.73). NLR was persistently ≥3.0 in 10.6% and B-Eos was persistently ≥300 cells·µL−1 in 15.3%. Conclusions Stable phase NLR and B-Eos were associated with future AECOPDs. NLR on its own is probably not useful to predict AECOPDs but might be included in a risk scoring index. A minority of subjects with COPD had persistently elevated stable-phase NLR or B-Eos, and the biomarkers showed fair longitudinal reliability. Neutrophil-to-lymphocyte ratio and blood eosinophils in stable-phase COPD are associated with future exacerbations and show fair longitudinal reliabilityhttps://bit.ly/3CAS1jY
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Bafadhel M, Barnes N, Bourke SC, Compton C, Criner GJ, Dransfield MT, Halpin DMG, Han MK, Hartley B, Jones CE, Lange P, Lettis S, Lipson DA, Lomas DA, Martin N, Martinez FJ, Wise R, Singh D. A single blood eosinophil count measurement is as good as two for prediction of ICS treatment response in the IMPACT trial. Eur Respir J 2021; 58:13993003.04522-2020. [PMID: 34385263 DOI: 10.1183/13993003.04522-2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/12/2021] [Indexed: 11/05/2022]
Affiliation(s)
- Mona Bafadhel
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Neil Barnes
- GSK, Brentford, Middlesex, UK.,Barts and the London School of Medicine and Dentistry, London, UK
| | - Stephen C Bourke
- North Tyneside General Hospital, North Shields, and Newcastle University, Newcastle, UK
| | | | - Gerard J Criner
- Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Mark T Dransfield
- Division of Pulmonary, Allergy, and Critical Care Medicine, Lung Health Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - David M G Halpin
- University of Exeter Medical School, College of Medicine and Health, University of Exeter, Exeter, Devon, UK
| | - MeiLan K Han
- Pulmonary & Critical Care, University of Michigan, Ann Arbor, MI, USA
| | | | | | - Peter Lange
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark.,Herlev-Gentofte Hospital, Herlev, Denmark
| | | | - David A Lipson
- GSK, Collegeville, PA, USA.,Pulmonary, Allergy, and Critical Care Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - David A Lomas
- UCL Respiratory, University College London, London, UK
| | - Neil Martin
- GSK, Brentford, Middlesex, UK.,University of Leicester, Leicester, UK
| | - Fernando J Martinez
- New York-Presbyterian Hospital/Weill Cornell Medical Center, New York, NY, USA
| | - Robert Wise
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins Medicine, Baltimore, MD, USA
| | - Dave Singh
- University of Manchester, Manchester, UK
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20
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Citgez E, van der Palen J, van der Valk P, Kerstjens HAM, Brusse-Keizer M. Stability in eosinophil categorisation during subsequent severe exacerbations of COPD. BMJ Open Respir Res 2021; 8:8/1/e000960. [PMID: 34376399 PMCID: PMC8354268 DOI: 10.1136/bmjresp-2021-000960] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/27/2021] [Indexed: 12/03/2022] Open
Abstract
Background The blood eosinophil count has been shown to be a promising biomarker for establishing personalised treatment strategies to reduce corticosteroid use, either inhaled or systemic, in chronic obstructive pulmonary disease (COPD). Eosinophil levels seem relatively stable over time in stable state, but little is known whether this is also true in subsequent severe acute exacerbations of COPD (AECOPD). Aims and objectives To determine the stability in eosinophil categorisation between two subsequent severe AECOPDs employing frequently used cut-off levels. Methods During two subsequent severe AECOPDs, blood eosinophil counts were determined at admission to the hospital in 237 patients in the Cohort of Mortality and Inflammation in COPD Study. The following four cut-off levels were analysed: absolute counts of eosinophils ≥0.2×10⁹/L (200 cells/µL) and ≥0.3×10⁹/L (300 cells/µL) and relative eosinophil percentage of ≥2% and ≥3% of total leucocyte count. Categorisations were considered stable if during the second AECOPD their blood eosinophil status led to the same classification: eosinophilic or not. Results Depending on the used cut-off, the overall stability in eosinophil categorisation varied between 70% and 85% during two subsequent AECOPDs. From patients who were eosinophilic at the first AECOPD, 34%–45% remained eosinophilic at the subsequent AECOPD, while 9%–21% of patients being non-eosinophilic at the first AECOPD became eosinophilic at the subsequent AECOPD. Conclusions The eosinophil variability leads to category changes in subsequent AECOPDs, which limits the eosinophil categorisation stability. Therefore, measurement of eosinophils at each new exacerbation seems warranted.
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Affiliation(s)
- Emanuel Citgez
- Department of Pulmonary Medicine, Medisch Spectrum Twente, Enschede, The Netherlands .,Department of Research Methodology, Measurement, and Data analysis, University of Twente, Enschede, The Netherlands
| | - Job van der Palen
- Department of Research Methodology, Measurement, and Data analysis, University of Twente, Enschede, The Netherlands.,Medical School Twente, Medisch Spectrum Twente, Enschede, The Netherlands
| | - Paul van der Valk
- Department of Pulmonary Medicine, Medisch Spectrum Twente, Enschede, The Netherlands
| | - Huib A M Kerstjens
- Department of Pulmonary Medicine, and Groningen Research Institute for Asthma and COPD (GRIAC), University of Groningen, University Medical Centre Groningen, Groningen, The Netherlands
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Abstract
Pharmacological treatment for chronic obstructive pulmonary disease (COPD) aims to alleviate symptoms and reduce the future risk of events such as exacerbations, disease progression and death. The heterogeneity of COPD results in variable responses to pharmacological interventions. COPD treatment has evolved towards a precision medicine approach, integrating clinical and biomarker information in order to optimize treatment decisions for each individual. The evidence supporting the use of blood eosinophil counts to predict responses to inhaled corticosteroids (ICS) in COPD patients has led to the adoption of this biomarker for use in clinical practice. The development of novel double and triple inhaled combination treatments containing long-acting bronchodilators with or without ICS has involved some landmark randomized controlled trials in COPD patients. These studies have provided valuable evidence to direct the use of different classes of combination treatments. However, there are still some unresolved questions and debates. This review article describes the advances in the pharmacological treatment of COPD, particularly the personalization of treatment. The evidence base for current recommendations is discussed, and controversial issues are dissected.
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Affiliation(s)
- Dave Singh
- Division of Infection, Immunity & Respiratory Medicine, University of Manchester, Manchester University NHS Hospital Trust, Manchester, UK
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22
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Vincken S, Sylvia V, Daniel S, Thomas E, Eef V. The role of FeNO in stable COPD patients with eosinophilic airway inflammation. Respir Med 2021; 181:106377. [PMID: 33838525 DOI: 10.1016/j.rmed.2021.106377] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/02/2021] [Accepted: 03/24/2021] [Indexed: 11/16/2022]
Affiliation(s)
- Stefanie Vincken
- Division of Respiratory Diseases, Department of Medicine, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium.
| | - Verbanck Sylvia
- Division of Respiratory Diseases, Department of Medicine, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Schuermans Daniel
- Division of Respiratory Diseases, Department of Medicine, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Evenepoel Thomas
- Division of Respiratory Diseases, Department of Medicine, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
| | - Vanderhelst Eef
- Division of Respiratory Diseases, Department of Medicine, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium
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The Role of ICS/LABA Fixed-Dose Combinations in the Treatment of Asthma and COPD: Bioequivalence of a Generic Fluticasone Propionate-Salmeterol Device. Pulm Med 2021; 2021:8881895. [PMID: 33815843 PMCID: PMC7994080 DOI: 10.1155/2021/8881895] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 02/25/2021] [Accepted: 02/28/2021] [Indexed: 11/17/2022] Open
Abstract
Both asthma and chronic obstructive pulmonary disease (COPD) are inflammatory chronic respiratory conditions with high rates of morbidity and mortality worldwide. The objectives of this review are to briefly describe the pathophysiology and epidemiology of asthma and COPD, discuss guideline recommendations for uncontrolled disease, and review a new generic option for the treatment of asthma and COPD. Although mild forms of these diseases may be controlled with as-needed pharmacotherapy, uncontrolled or persistent asthma and moderate or severe COPD uncontrolled by bronchodilators with elevated eosinophilia or frequent exacerbations may require intervention with combination therapy with inhaled corticosteroids (ICS) and long-acting beta agonists (LABAs), according to international guidelines. Fixed-dose combinations of ICS/LABA are commonly prescribed for both conditions, with fluticasone propionate (FP) and salmeterol forming a cornerstone of many treatment plans. An oral inhalation powder containing the combination of FP and salmeterol has been available as Advair Diskus® in the United States for almost 20 years, and the first and only substitutable generic version of this product has recently been approved for use: Wixela™ Inhub™. Bioequivalence of Wixela Inhub and Advair Diskus has been established. Furthermore, the Inhub inhaler was shown to be robust and easy to use, suggesting that Wixela Inhub may provide an alternative option to Advair Diskus for patients with asthma or COPD requiring intervention with an ICS/LABA.
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Is Blood Eosinophil Count a Biomarker for Chronic Obstructive Pulmonary Disease in a Real-World Clinical Setting? Predictive Property and Longitudinal Stability in Japanese Patients. Diagnostics (Basel) 2021; 11:diagnostics11030404. [PMID: 33673418 PMCID: PMC7996846 DOI: 10.3390/diagnostics11030404] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 02/23/2021] [Indexed: 12/20/2022] Open
Abstract
The authors examined predictive properties and the longitudinal stability of blood eosinophil count (BEC) or three strata (<100 cells/mm3, 100-299 cells/mm3 and ≥300 cells/mm3) in patients with chronic obstructive pulmonary disease (COPD) for up to six and a half years as part of a hospital-based cohort study. Of the 135 patients enrolled, 21 (15.6%) were confirmed to have died during the follow-up period. Episodes of acute exacerbation of COPD (AECOPD) were identified in 74 out of 130 available patients (56.9%), and admission due to AECOPD in 35 out of 132 (26.5%). Univariate Cox proportional hazards analyses revealed that almost all the age, forced expiratory volume in 1 s (FEV1) and health status measures using St. George's Respiratory Questionnaire (SGRQ) Total and COPD Assessment Test (CAT) Score were significantly related to these types of events, but the relationship between age and AECOPD did not reach statistical significance (p = 0.05). Neither BEC nor the three different groups stratified by BEC were significant predictors of any subsequent events. There were no significant differences in the BEC between Visits 1-3 (p = 0.127, Friedman test). The ICC value was 0.755 using log-transformed data, indicating excellent repeatability. In the case of assigning to strata, Fleiss' kappa was calculated to be 0.464, indicating moderate agreement. The predictive properties of BEC may be limited in a real-world Japanese clinical setting. Attention must be paid to the fact that the longitudinal stability of the three strata is regarded as moderate.
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25
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Gao YH, Chen RC. Triple therapy in chronic obstructive pulmonary disease: consideration under new evidence. Chin Med J (Engl) 2021; 134:1513. [PMID: 34250958 PMCID: PMC8280091 DOI: 10.1097/cm9.0000000000001340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Indexed: 11/27/2022] Open
Affiliation(s)
- Yong-Hua Gao
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Rong-Chang Chen
- Pulmonary and Critical Care Department, Shenzhen Institute of Respiratory Diseases, Shenzhen People's Hospital, Shenzhen, Guangdong 518020, China
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26
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Blood Eosinophil Counts and Their Variability and Risk of Exacerbations in COPD: A Population-Based Study. ACTA ACUST UNITED AC 2021. [DOI: 10.1016/j.arbr.2019.12.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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27
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Southworth T, Higham A, Kolsum U, Li J, Scott T, Dungwa J, Sridhar S, Pham TH, Newbold P, Singh D. The relationship between airway immunoglobulin activity and eosinophils in COPD. J Cell Mol Med 2020; 25:2203-2212. [PMID: 33369092 PMCID: PMC7882983 DOI: 10.1111/jcmm.16206] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 02/06/2023] Open
Abstract
In chronic obstructive pulmonary disease (COPD), the effects of inhaled corticosteroids are predicted by blood eosinophil counts. We previously briefly reported increased immunoglobulin (Ig)A and IgM levels in bronchoalveolar lavage (BAL) of COPD patients with higher (eosinophilhigh) compared to lower (eosinophillow) blood eosinophils (>250/μL versus < 150/μL), suggesting differences in adaptive immune function. An inverse relationship exists between eosinophil counts and airway pathogenic bacteria levels. The mechanistic reasons for these associations between eosinophils, corticosteroids and pathogenic bacteria are unclear. IgA, IgM and IgG levels were assessed in BAL, bronchial biopsies and epithelium collected from eosinophilhigh (n = 20) and eosinophillow (n = 21) patients. Bronchial B‐cell numbers were measured by immunohistochemistry. B‐cell activity was assessed in bronchial samples and following exposure to BAL from eosinophilhigh and eosinophillow patients. BAL levels of non‐typeable Haemophilus influenza (NTHi)‐specific immunoglobulins were quantified. Results showed airway expression of IgA, IgG1 and IgM were lower in eosinophillow compared to eosinophilhigh patients, with lower levels of NTHi‐specific IgA and IgM. Bronchial B‐cell numbers were similar in both groups, but B‐cell activity was lower in eosinophillow patients. In conclusion, COPD eosinophillow patients show differences in adaptive immune function compared to COPD eosinophilhigh patients. These differences may cause different microbiomes in these COPD phenotypes.
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Affiliation(s)
- Thomas Southworth
- Division of Infection, Immunity and Respiratory Medicine, Manchester University NHS Foundation Trust, University of Manchester, Manchester, UK.,Medicines Evaluation Unit, Manchester, UK
| | - Andrew Higham
- Division of Infection, Immunity and Respiratory Medicine, Manchester University NHS Foundation Trust, University of Manchester, Manchester, UK
| | - Umme Kolsum
- Division of Infection, Immunity and Respiratory Medicine, Manchester University NHS Foundation Trust, University of Manchester, Manchester, UK
| | - Jian Li
- Division of Infection, Immunity and Respiratory Medicine, Manchester University NHS Foundation Trust, University of Manchester, Manchester, UK
| | | | | | - Sriram Sridhar
- Translational Science, Oncology R&D, AstraZeneca, Gaithersburg, MD, USA
| | - Tuyet-Hang Pham
- Translational Science & Experimental Medicine, Early Respiratory & Immunology, Research & Early Development, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, USA
| | - Paul Newbold
- BioPharmaceuticals Medical, AstraZeneca, Gaithersburg, MD, USA
| | - Dave Singh
- Division of Infection, Immunity and Respiratory Medicine, Manchester University NHS Foundation Trust, University of Manchester, Manchester, UK.,Medicines Evaluation Unit, Manchester, UK
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28
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Voorham J, Baldi S, Santoro L, Kerkhof M, Contoli M, Fabbri LM, Kerstjens HAM, Luis López-Campos J, Roche N, Singh D, Vogelmeier CF, Price DB. Extrafine Beclometasone Dipropionate/Formoterol Fumarate vs Double Bronchodilation Therapy in Patients with COPD: A Historical Real-World Non-Inferiority Study. Int J Chron Obstruct Pulmon Dis 2020; 15:2739-2750. [PMID: 33149571 PMCID: PMC7605609 DOI: 10.2147/copd.s269287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 10/07/2020] [Indexed: 11/23/2022] Open
Abstract
Purpose This study aimed to evaluate the non-inferiority of initiating extrafine beclometasone dipropionate/formoterol fumarate (BDP/FF) versus double bronchodilation (long-acting beta-agonists [LABA]/long-acting muscarinic antagonists [LAMA]) among patients with a history of chronic obstructive pulmonary disease (COPD) exacerbations. Patients and Methods A historical cohort study was conducted using data from the UK's Optimum Patient Care Research Database. Patients with COPD ≥40 years at diagnosis were included if they initiated extrafine BDP/FF or any LABA/LAMA double therapy as a step-up from no maintenance therapy or monotherapy with inhaled corticosteroids (ICS), LAMA, or LABA and a history of ≥2 moderate/severe exacerbations in the previous two years. The primary outcome was exacerbation rate from therapy initiation until a relevant therapy change or end of follow-up. Secondary outcomes included rate of acute respiratory events, acute oral corticosteroids (OCS) courses, and antibiotic prescriptions with lower respiratory indication, modified Medical Research Council score (mMRC) ≥2, and time to first pneumonia diagnosis. The non-inferiority boundary was set at a relative difference of 15% on the ratio scale. Five potential treatment effect modifiers were investigated. Results A total of 1735 patients initiated extrafine BDP/FF and 2450 patients initiated LABA/LAMA. The mean age was 70 years, 51% were male, 41% current smokers, and 85% had FEV1 <80% predicted. Extrafine BDP/FF showed non-inferiority to LABA/LAMA for rate of exacerbations (incidence rate ratio [IRR] = 1.01 [95% CI 0.94-1.09]), acute respiratory events (IRR = 0.98 [0.92-1.04]), acute OCS courses (IRR = 1.01 [0.91-1.11]), and antibiotic prescriptions (IRR = 0.99 [0.90-1.09]), but not for mMRC (OR = 0.93 [0.69-1.27]) or risk of pneumonia (HR = 0.50 [0.14-1.73]). None of the a priori defined effect modifier candidates affected the comparative effectiveness. Conclusion This study found that stepping up to extrafine BDP/FF from no maintenance or monotherapy was not inferior to stepping up to double bronchodilation therapy in patients with a history of exacerbations.
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Affiliation(s)
- Jaco Voorham
- Observational & Pragmatic Research Institute Pte Ltd, Singapore, Singapore.,Data to Insights Research Solutions, Lisbon, Portugal
| | - Simonetta Baldi
- Department of Global Clinical Development, Chiesi SAS, Bois Colombes Cedex, France
| | - Luigi Santoro
- Department of Global Clinical Development, Chiesi Farmaceutici S.p.A, Parma, Italy
| | - Marjan Kerkhof
- Observational & Pragmatic Research Institute Pte Ltd, Singapore, Singapore.,Mescio Research, Blauwestad, The Netherlands
| | - Marco Contoli
- Section of Respiratory Medicine, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Leonardo M Fabbri
- Section of Respiratory Medicine, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Huib A M Kerstjens
- Department of Pulmonary Diseases, University of Groningen and University Medical Center Groningen, Groningen, The Netherlands
| | | | - Nicolas Roche
- Service de Pneumologie, Hôpital Cochin, APHP, Centre-Université de Paris, Paris, France
| | - Dave Singh
- University of Manchester, Manchester University NHS Foundation Trust, Manchester, UK
| | - Claus F Vogelmeier
- Department of Internal Medicine, Pulmonary and Critical Care Medicine, University of Marburg, Member of the German Centre for Lung Research (DZL), Marburg, Germany
| | - David B Price
- Observational & Pragmatic Research Institute Pte Ltd, Singapore, Singapore.,Centre of Academic Primary Care, Division of Applied Health Sciences, University of Aberdeen, Aberdeen, UK
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29
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Singh D, Wedzicha JA, Siddiqui S, de la Hoz A, Xue W, Magnussen H, Miravitlles M, Chalmers JD, Calverley PMA. Blood eosinophils as a biomarker of future COPD exacerbation risk: pooled data from 11 clinical trials. Respir Res 2020; 21:240. [PMID: 32943047 PMCID: PMC7499955 DOI: 10.1186/s12931-020-01482-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 08/06/2020] [Indexed: 12/23/2022] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is characterised by progressive airflow limitation and chronic inflammation. Predicting exacerbations of COPD, which contribute to disease progression, is important to guide preventative treatment and improve outcomes. Blood eosinophils are a biomarker for patient responsiveness to inhaled corticosteroids (ICS); however, their effectiveness as a predictive biomarker for COPD exacerbations is unclear. Methods This post hoc analysis pooled data from 11 Boehringer Ingelheim-sponsored Phase III and IV randomised COPD studies with similar methodologies. Exacerbation data were collected from these studies, excluding patients from the ICS withdrawal arm of the WISDOM® study. Patients were grouped according to their baseline blood eosinophil count, baseline ICS use and number of exacerbations in the year prior to each study. Results Exacerbation rate data and baseline eosinophil count were available for 22,125 patients; 45.6% presented with a baseline blood eosinophil count of ≤ 150 cells/μL, 34.3% with 150–300 cells/μL and 20.1% with > 300 cells/μL. The lowest exacerbation rates were observed in patients with ≤ 150 cells/μL, with small increases in exacerbation rate observed with increasing eosinophil count. When stratified by exacerbation history, the annual rate of exacerbations for patients with 0 exacerbations in the previous year increased in line with increasing eosinophil counts (0.38 for ≤ 150 cells/μL, 0.39 for 150–300 cells/μL and 0.44 for > 300 cells/μL respectively). A similar trend was identified for patients with one exacerbation in the previous year, 0.62, 0.66 and 0.67 respectively. For patients with ≥ 2 exacerbations, exacerbation rates fluctuated between 1.02 (≤ 150 cells/μL) to 1.10 (150–300 cells/μL) and 1.07 (> 300 cells/μL). Higher exacerbation rates were noted in patients treated with ICS at baseline (range 0.75 to 0.82 with increasing eosinophil count) compared with patients not on ICS (range 0.45 to 0.49). Conclusion We found no clinically important relationship between baseline blood eosinophil count and exacerbation rate. Hence, the current analysis does not support the use of blood eosinophils to predict exacerbation risk; however, previous exacerbation history was found to be a more reliable predictor of future exacerbations. Trial registration ClinicalTrials.gov Identifiers: NCT00168844, NCT00168831, NCT00387088, NCT00782210, NCT00782509, NCT00793624, NCT00796653, NCT01431274, NCT01431287, NCT02296138 and NCT00975195. Graphical abstract ![]()
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Affiliation(s)
- Dave Singh
- Medicines Evaluation Unit, University of Manchester, Manchester University NHS Foundation Trust, Manchester, UK.
| | - Jadwiga A Wedzicha
- Respiratory Division, National Heart and Lung Institute, Imperial College London, London, UK
| | - Salman Siddiqui
- NIHR Leicester Biomedical Research Centre: Respiratory Theme, and Department of Respiratory Sciences, University of Leicester, Leicester, UK
| | - Alberto de la Hoz
- Boehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany
| | - Wenqiong Xue
- Boehringer Ingelheim Pharmaceuticals, Inc., Ridgefield, CT, USA
| | - Helgo Magnussen
- Pulmonary Research Institute at Lung Clinic Grosshansdorf, Grosshansdorf, Germany
| | - Marc Miravitlles
- Pneumology Department, Hospital Universitari Vall d'Hebron/Vall d'Hebron Research Institute (VHIR), CIBER de Enfermedades Respiratorias (CIBERES), Barcelona, Spain
| | - James D Chalmers
- Scottish Centre for Respiratory Research, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | - Peter M A Calverley
- Clinical Science Centre, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, UK
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30
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Singh D, Bafadhel M, Brightling CE, Sciurba FC, Curtis JL, Martinez FJ, Pasquale CB, Merrill DD, Metzdorf N, Petruzzelli S, Tal-Singer R, Compton C, Rennard S. Blood Eosinophil Counts in Clinical Trials for Chronic Obstructive Pulmonary Disease. Am J Respir Crit Care Med 2020; 202:660-671. [PMID: 32186896 PMCID: PMC7462391 DOI: 10.1164/rccm.201912-2384pp] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 03/17/2020] [Indexed: 01/09/2023] Open
Affiliation(s)
- Dave Singh
- Division of Infection, Immunity, and Respiratory Medicine, University of Manchester, Manchester University National Health Service Hospital Trust, Manchester, United Kingdom
| | - Mona Bafadhel
- Respiratory Medicine Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Christopher E. Brightling
- Institute for Lung Health, National Institute for Health Research Leicester Biomedical Research Centre, Department of Respiratory and Infection Sciences, University of Leicester, Leicester, United Kingdom
| | - Frank C. Sciurba
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Jeffrey L. Curtis
- Pulmonary and Critical Care Medicine, VA Ann Arbor Healthcare System, Ann Arbor, Michigan
- Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Michigan
| | - Fernando J. Martinez
- Pulmonary and Critical Care Medicine, Weill Cornell Medical College, New York, New York
| | - Cara B. Pasquale
- COPD Patient-Powered Research Network, COPD Foundation, Washington, DC
| | - Debora D. Merrill
- COPD Biomarkers Qualification Consortium, COPD Foundation, Miami, Florida
| | - Norbert Metzdorf
- Boehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany
| | | | - Ruth Tal-Singer
- COPD Biomarkers Qualification Consortium, COPD Foundation, Miami, Florida
| | - Christopher Compton
- Global Medical Affairs, Speciality and Primary Care, GlaxoSmithKline, Middlesex, United Kingdom
| | - Stephen Rennard
- Biopharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
- University of Nebraska Medical Center, Omaha, Nebraska; and
| | - on behalf of the COPD Foundation Eosinophil Working Group
- Division of Infection, Immunity, and Respiratory Medicine, University of Manchester, Manchester University National Health Service Hospital Trust, Manchester, United Kingdom
- Respiratory Medicine Unit, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
- Institute for Lung Health, National Institute for Health Research Leicester Biomedical Research Centre, Department of Respiratory and Infection Sciences, University of Leicester, Leicester, United Kingdom
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
- Pulmonary and Critical Care Medicine, VA Ann Arbor Healthcare System, Ann Arbor, Michigan
- Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Michigan
- Pulmonary and Critical Care Medicine, Weill Cornell Medical College, New York, New York
- COPD Patient-Powered Research Network, COPD Foundation, Washington, DC
- COPD Biomarkers Qualification Consortium, COPD Foundation, Miami, Florida
- Boehringer Ingelheim International GmbH, Ingelheim am Rhein, Germany
- Global Clinical Development, Chiesi Farmaceutici, Parma, Italy
- Global Medical Affairs, Speciality and Primary Care, GlaxoSmithKline, Middlesex, United Kingdom
- Biopharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
- University of Nebraska Medical Center, Omaha, Nebraska; and
- Research and Development, AstraZeneca, Gaithersburg, Maryland
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31
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Mycroft K, Krenke R, Górska K. Eosinophils in COPD-Current Concepts and Clinical Implications. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY. IN PRACTICE 2020; 8:2565-2574. [PMID: 32251737 DOI: 10.1016/j.jaip.2020.03.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/03/2020] [Accepted: 03/08/2020] [Indexed: 01/20/2023]
Abstract
In recent years, heterogeneity in chronic obstructive pulmonary disease (COPD) inflammatory patterns has been recognized as a basis for more precise treatment interventions because current therapies have limited effectiveness. Eosinophilic airway inflammation in COPD has become a subject of research interest as a potential treatment target for inhaled corticosteroid therapy. However, the role of eosinophils in COPD is still unclear, and it is unknown why only some patients with COPD develop eosinophilic airway inflammation. Induced sputum analysis is the most common method of assessing the type of airway inflammation. Accessibility to sputum induction, however, is limited in clinical practice, and blood eosinophils have been proposed to serve as a surrogate marker and treatment guide. Blood eosinophil count has been shown to poorly predict sputum eosinophilia, and, moreover, it seems to be fairly unstable and affected by various factors. Nevertheless, in several trials, blood eosinophil count appeared to predict good response to inhaled corticosteroids However, biologics targeting eosinophils do not appear to be effective in COPD. In this review, we briefly summarize the current knowledge on eosinophils in COPD pathogenesis. Then, we discuss the use of blood eosinophil count in COPD in relation to the recent Global Initiative for Chronic Obstructive Pulmonary Disease recommendations, their ability to predict sputum eosinophilia, and their potential role in guiding treatment.
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Affiliation(s)
- Katarzyna Mycroft
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, Warsaw, Poland
| | - Rafal Krenke
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, Warsaw, Poland
| | - Katarzyna Górska
- Department of Internal Medicine, Pulmonary Diseases and Allergy, Medical University of Warsaw, Warsaw, Poland.
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32
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Yoon JK, Lee JK, Lee CH, Hwang YI, Kim H, Park D, Hwang KE, Kim SH, Jung KS, Yoo KH, Ra SW, Kim DK. The Association Between Eosinophil Variability Patterns and the Efficacy of Inhaled Corticosteroids in Stable COPD Patients. Int J Chron Obstruct Pulmon Dis 2020; 15:2061-2070. [PMID: 32943859 PMCID: PMC7473991 DOI: 10.2147/copd.s258353] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 07/09/2020] [Indexed: 11/23/2022] Open
Abstract
Introduction Blood eosinophils are a predictive marker for the use of inhaled corticosteroids (ICS). However, there is concern over whether a single measure of blood eosinophils is sufficient for outlining a treatment plan. Here, we evaluated the association between variability in blood eosinophils and the effects of ICS in stable COPD cohorts. Methods COPD patients in the Korean COPD Subtype Study and the Seoul National University Airway Registry from 2011 to 2018 were analyzed. Based on blood eosinophils at baseline and at 1-year follow-up, the patients were classified into four groups with 250/μL as a cutoff value: consistently high (CH), consistently low (CL), variably increasing (VI), and variably decreasing (VD). We compared rates of acute exacerbations (AEs) according to ICS use in each group after calibration of severity using propensity score matching. Results Of 2,221 COPD patients, 618 were analyzed and a total of 125 (20%), 355 (57%), 63 (10%), and 75 (12%) patients were classified into the CH, CL, VI, and VD groups, respectively. After calibration, we found that ICS users tended to have a lower AE rate in the CH group (RR 0.41, 95% CI 0.21–0.74) and VI group (RR 0.45, 95% CI 0.22–0.88), but not in the CL group (RR 1.42, 95% CI 1.08–1.89) and VD group (RR 1.71, 95% CI 1.00–2.96). Conclusion More than one-fifth of patients had an inconsistent blood eosinophil level after the 1-year follow-up, and the AE-COPD rate according to ICS differed based on variability in eosinophils. Regular follow-up of blood eosinophils is required for COPD patients.
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Affiliation(s)
- Jung-Ki Yoon
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Jung-Kyu Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Chang-Hoon Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yong Il Hwang
- Department of Internal Medicine, College of Medicine, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Hyunkuk Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Inje University Haeundae Paik Hospital, Busan, Republic of Korea
| | - Dongil Park
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Ki-Eun Hwang
- Department of Internal Medicine, Wonkwang University, School of Medicine, Iksan, Republic of Korea
| | - Sang-Heon Kim
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Ki-Suck Jung
- Department of Internal Medicine, College of Medicine, Hallym University Sacred Heart Hospital, Anyang, Republic of Korea
| | - Kwang Ha Yoo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Republic of Korea
| | - Seung Won Ra
- Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Deog Kyeom Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Republic of Korea.,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
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Antus B, Paska C, Barta I. Predictive Value of Exhaled Nitric Oxide and Blood Eosinophil Count in the Assessment of Airway Eosinophilia in COPD. Int J Chron Obstruct Pulmon Dis 2020; 15:2025-2035. [PMID: 32921998 PMCID: PMC7457875 DOI: 10.2147/copd.s257965] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 07/15/2020] [Indexed: 12/18/2022] Open
Abstract
Purpose Fractional exhaled nitric oxide (FENO50) level and peripheral blood eosinophil count may serve as indicators of airway eosinophilia. The aim of this study was to estimate the diagnostic value of these markers for detecting airway eosinophilia in patients with stable chronic obstructive pulmonary disease (COPD) and those experiencing an acute exacerbation (AECOPD). Patients and Methods FENO50 levels, sputum and blood eosinophil counts were assessed in 53 clinically stable ex-smoker COPD patients and 67 ex-smoker COPD patients experiencing a severe exacerbation. In AECOPD, clinical variables were measured at the time of hospital admission and discharge following treatment. Results In stable COPD, blood eosinophil count but not FENO50 level was found to be a good predictor of airway eosinophilia (area under the receiver operating characteristic curve [ROC AUC]: ≥0.82). The sensitivity and the specificity of the test ranged between 75% and 98%, the negative predictive value (NPV) was high (>90%). In AECOPD, FENO50 was predictive for airway eosinophilia (ROC AUC: >0.8) with high NPV (>88%), but with lower sensitivity and specificity (64-70%). In contrast, the predictive accuracy of blood eosinophil count for airway eosinophilia in AECOPD was modest (ROC AUC: 0.54-0.63). The combined use of the two markers provided only limited additional benefit. Correlation analyses supported ROC curve findings. Conclusion In stable COPD the peripheral blood eosinophil count, while in AECOPD the FENO50 level is a good surrogate marker of airway eosinophilia.
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Affiliation(s)
- Balazs Antus
- Department of Pathophysiology, National Koranyi Institute of Pulmonology, BudapestH-1121, Hungary
- Department of Pulmonology, National Koranyi Institute of Pulmonology, BudapestH-1121, Hungary
| | - Csilla Paska
- Department of Pathophysiology, National Koranyi Institute of Pulmonology, BudapestH-1121, Hungary
| | - Imre Barta
- Department of Pathophysiology, National Koranyi Institute of Pulmonology, BudapestH-1121, Hungary
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34
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Eosinophilia and parasitic infestations in patients with chronic obstructive pulmonary disease. Sci Rep 2020; 10:12490. [PMID: 32719497 PMCID: PMC7385115 DOI: 10.1038/s41598-020-69541-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 07/13/2020] [Indexed: 01/03/2023] Open
Abstract
Eosinophilia may guide response to inhaled corticosteroid treatment in patients with chronic obstructive pulmonary disease (COPD). This study aimed to determine prevalence of eosinophilia and parasitic infestations in these patients. We conducted a prospective cohort study between February 2019 and January 2020 and screened 107 stable COPD patients. A total of 77 subjects (84.4% men) were included. Age was 73.8 ± 8.9 years. Forced expiratory volume in 1 s was 66.5 ± 25.5%. Smoking history was 25.9 ± 18 pack-years. Comorbidities included cardiovascular disease (57.1%). Respiratory symptoms were assessed by modified Medical Research Council dyspnea score (1.6 ± 0.8), chronic obstructive pulmonary disease Assessment Test score (9.3 ± 4.9), and 6-min walking distance (317.2 ± 135.2 m). Patients with blood eosinophil count at least 100 cells/μL were 79.2% and at least 300 cells/μL were 33.8%. Intestinal parasites were not found. Significant positive correlations were found between high blood eosinophilia and some post-bronchodilator lung function parameters. In conclusion, eosinophilic COPD was not uncommon. No intestinal parasite was found in this population. This study suggests that stool parasite exam might be omitted for routine practice. Clinicaltrials.in.th Number: TCTR20191129002.
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Van Rossem I, Vandevoorde J, Hanon S, Deridder S, Vanderhelst E. The stability of blood eosinophils in stable chronic obstructive pulmonary disease: a retrospective study in Belgian primary care. BMC Pulm Med 2020; 20:200. [PMID: 32698819 PMCID: PMC7376637 DOI: 10.1186/s12890-020-01234-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Accepted: 07/13/2020] [Indexed: 11/13/2022] Open
Abstract
Background Blood eosinophil counts (BEC) were recently included in the 2019 Global Initiative for Obstructive Lung Disease (GOLD) guideline as an easily accessible theragnostic biomarker for Chronic Obstructive Pulmonary Disease (COPD). However, the stability of BEC remains insufficiently studied. Methods We conducted a retrospective study in six primary care practices in Belgium on data from Electronic Health Records of stable COPD patients, to characterise the stability of blood eosinophils over time. We report the percentage of patients with BEC persistently below or above the 2019 GOLD guideline thresholds (100 and 300 cells/μL). For each patient the mean, standard deviation (SD) and relative standard deviation (RSD) of the BEC were calculated to determine the intra-patient variability. Results Ninety-eight patients were included, yielding 1082 eosinophil measurements (median 8 measurements/patient), with BEC ranging between 0 and 1504 cells/μL. Four (4.1%) patients had BEC persistently below 100 cells/μL, 34 (34.7%) had measurements persistently above this threshold. Approximately half of the patients (51.0%) had BEC persistently below 300 cells/μL and 3 (3.1%) patients had counts persistently above this threshold. 28.6% of patients crossed both threshold values throughout the registration period. The mean BEC per patient ranged between 15 and 846 cells/μL with an intra-patient SD between 5 and 658 cells/μL. The mean intra-patient RSD was 0.46. There was a significant strong positive correlation (Pearson analyses) between the mean BEC and SD (r = 0.765; n = 98). Simple linear regression was used to further describe the influence of the mean eosinophil count on the SD (B = 0.500; 95%CI 0.415–0.586; n = 98; p < 0.001). Conclusion BEC can be variable in individual COPD patients. Therefore, the use of a single measurement to guide therapeutic decisions remains debatable. Further prospective research remains necessary to validate the reproducibility of this biomarker.
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Affiliation(s)
- Inès Van Rossem
- Department of Family Medicine and Chronic Care, Vrije Universiteit Brussel, Laarbeeklaan 103, B-1090, Brussels, Belgium.
| | - Jan Vandevoorde
- Department of Family Medicine and Chronic Care, Vrije Universiteit Brussel, Laarbeeklaan 103, B-1090, Brussels, Belgium
| | - Shane Hanon
- Respiratory Division, Universitair Ziekenhuis Brussel, Laarbeeklaan 101, B-1090, Brussels, Belgium
| | - Sander Deridder
- Department of Chemical Engineering, Process and Environmental Technology Lab, Katholieke Universiteit Leuven, Jan Pieter de Nayerlaan 5, 2860, Sint-Katelijne-Waver, Belgium
| | - Eef Vanderhelst
- Respiratory Division, Universitair Ziekenhuis Brussel, Laarbeeklaan 101, B-1090, Brussels, Belgium
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Chalmers JD, Laska IF, Franssen FME, Janssens W, Pavord I, Rigau D, McDonnell MJ, Roche N, Sin DD, Stolz D, Suissa S, Wedzicha J, Miravitlles M. Withdrawal of inhaled corticosteroids in COPD: a European Respiratory Society guideline. Eur Respir J 2020; 55:13993003.00351-2020. [PMID: 32366483 DOI: 10.1183/13993003.00351-2020] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 03/02/2020] [Indexed: 02/06/2023]
Abstract
Inhaled corticosteroids (ICS) combined with bronchodilators can reduce the frequency of exacerbations in some patients with chronic obstructive pulmonary disease (COPD). There is evidence, however, that ICS are frequently used in patients where their benefit has not been established. Therefore, there is a need for a personalised approach to the use of ICS in COPD and to consider withdrawal of ICS in patients without a clear indication. This document reports European Respiratory Society recommendations regarding ICS withdrawal in patients with COPD.Comprehensive evidence synthesis was performed to summarise all available evidence relevant to the question: should ICS be withdrawn in patients with COPD? The evidence was appraised using the GRADE (Grading of Recommendations, Assessment, Development and Evaluation) approach and the results were summarised in evidence profiles. The evidence synthesis was discussed and recommendations formulated by a committee with expertise in COPD and guideline methodology.After considering the balance of desirable and undesirable consequences, quality of evidence, and feasibility and acceptability of interventions, the guideline panel made: 1) conditional recommendation for the withdrawal of ICS in patients with COPD without a history of frequent exacerbations, 2) strong recommendation not to withdraw ICS in patients with blood eosinophil counts ≥300 eosinophils·µL-1 and 3) strong recommendation to treat with one or two long-acting bronchodilators if ICS are withdrawn.A conditional recommendation indicates that there was uncertainty about the balance of desirable and undesirable consequences of the intervention, and that well-informed patients may make different choices regarding whether to have or not have the specific intervention.
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Affiliation(s)
- James D Chalmers
- School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK.,Task Force co-chairs.,These three authors contributed equally to the development of this guideline
| | - Irena F Laska
- School of Medicine, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK.,These three authors contributed equally to the development of this guideline
| | - Frits M E Franssen
- Dept of Respiratory Medicine, Maastricht University Medical Center, Maastricht, The Netherlands.,Dept of Research and Education, CIRO, Horn, The Netherlands
| | - Wim Janssens
- Clinical Dept of Respiratory Diseases, UZ Leuven and Breathe, Dept CHROMETA, KU Leuven, Leuven, Belgium
| | - Ian Pavord
- Oxford NIHR Respiratory BRC, Nuffield Dept of Medicine, University of Oxford, Oxford, UK
| | - David Rigau
- Iberoamerican Cochrane Center, Barcelona, Spain
| | | | - Nicolas Roche
- Respiratory Medicine, Cochin Hospital, AP-HP Centre University of Paris, Cochin Institute (UMR1016), Paris, France
| | - Don D Sin
- Centre for Heart Lung Innovation, St Paul's Hospital and Respiratory Division, Dept of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Daiana Stolz
- Clinic of Respiratory Medicine and Pulmonary Cell Research, University Hospital, Basel, Switzerland
| | - Samy Suissa
- Centre for Clinical Epidemiology, Jewish General Hospital and Dept of Epidemiology and Biostatistics, McGill University, Montreal, QC, Canada
| | - Jadwiga Wedzicha
- Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK
| | - Marc Miravitlles
- Pneumology Dept, Hospital Universitari Vall d'Hebron/Vall d'Hebron Research Institute, CIBER de Enfermedades Respiratorias (CIBERES), Barcelona, Spain .,Task Force co-chairs.,These three authors contributed equally to the development of this guideline
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Higham A, Leow-Dyke S, Jackson N, Singh D. Stability of eosinophilic inflammation in COPD bronchial biopsies. Eur Respir J 2020; 56:13993003.00622-2020. [DOI: 10.1183/13993003.00622-2020] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 05/09/2020] [Indexed: 02/03/2023]
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Zhang Y, Liang LR, Zhang S, Lu Y, Chen YY, Shi HZ, Lin YX. Blood Eosinophilia and Its Stability in Hospitalized COPD Exacerbations are Associated with Lower Risk of All-Cause Mortality. Int J Chron Obstruct Pulmon Dis 2020; 15:1123-1134. [PMID: 32547000 PMCID: PMC7245431 DOI: 10.2147/copd.s245056] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/08/2020] [Indexed: 12/19/2022] Open
Abstract
Purpose Peripheral blood eosinophilic counts are susceptible to many factors and have variability over time. There are limited studies on association of blood eosinophilia with long-term mortality of chronic obstructive pulmonary disease (COPD) patients and these results remain controversial. Our aims were to explore the association of blood eosinophilia at index hospitalization and stability of blood eosinophilia stability over 5 years with all-cause mortality of patients hospitalized for acute exacerbation of COPD (AECOPD). Patients and Methods Eight hundred twenty-nine patients hospitalized for AECOPD between 2013 and 2014 were included in this study and grouped into two groups according to blood eosinophil with 150 cells/μL used as the cutoff value to form eosinophilic and non-eosinophilic groups. Two hundred forty-one COPD inpatients with at least three blood eosinophils measured from different hospitalizations were used for analysis of longitudinally eosinophilic stability and divided into three groups according to the same cutoff value: predominantly (PE), intermittently (IE) and rarely (RE) eosinophilic groups. Cox regression analysis was used to determine the association of blood eosinophilia and all-cause mortality. Results In patients hospitalized for AECOPD, 261 (31.5%) at baseline and 41 (17%) based on at least three measurements of blood eosinophils had increased blood eosinophils. For all-cause mortality, eosinophilic COPD patients at index hospitalization had a lower all-cause mortality compared with non-eosinophilic COPD patients (hazard ratio 0.77, 95% confidence interval 0.6–0.99, P=0.04). In patients readmitted for AECOPD by longitudinal eosinophil stability, with the RE group used as reference, the PE group was associated with a lower all-cause mortality of AECOPD patients (hazard ratio 0.43, 95% confidence interval 0.22–0.85, P=0.016), compared to the IE group (hazard ratio 0.72, 95% confidence interval 0.47–1.11, P=0.133). Conclusion Patients with increased eosinophils (using eosinophil 150 cells/μL as a cutoff value), especially predominantly increased eosinophil levels based on multiple measurements, had a lower risk of all-cause mortality. Blood eosinophilia can be used as a biomarker in hospitalized COPD exacerbations for predicting the risk of all-cause mortality. ![]()
Point your SmartPhone at the code above. If you have a QR code reader the video abstract will appear. Or use: https://youtu.be/RroTKw3Hisg
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Affiliation(s)
- Ying Zhang
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Li-Rong Liang
- Clinical Epidemiology and Tobacco Dependence Treatment Research Department, Beijing Institute of Respiratory Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Shu Zhang
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Yong Lu
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Yang-Yu Chen
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Huan-Zhong Shi
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
| | - Ying-Xiang Lin
- Department of Respiratory and Critical Care Medicine, Beijing Institute of Respiratory Medicine and Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, People's Republic of China
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Singh D. Blood Eosinophil Counts in Chronic Obstructive Pulmonary Disease: A Biomarker of Inhaled Corticosteroid Effects. Tuberc Respir Dis (Seoul) 2020; 83:185-194. [PMID: 32578413 PMCID: PMC7362755 DOI: 10.4046/trd.2020.0026] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 04/10/2020] [Indexed: 01/04/2023] Open
Abstract
Blood eosinophil counts have emerged as a chronic obstructive pulmonary disease (COPD) biomarker that predict the effects of inhaled corticosteroids (ICS) in clinical practice. Post-hoc and prospective analysis of randomized control trials have shown that higher blood eosinophil counts at the start of the study predict a greater response to ICS. COPD patients with frequent exacerbations (2 or more moderate exacerbations/yr) or a history of hospitalization have a greater response to ICS. Ex-smokers also appear to have a greater ICS response. Blood eosinophil counts can be combined with clinical information such as exacerbation history and smoking status to enable a precision medicine approach to the use of ICS. Higher blood eosinophil counts are associated with increased eosinophilic lung inflammation, and other biological features that may contribute to the increased ICS response observed. Emerging data indicates that lower blood eosinophil counts are associated with an increased risk of bacterial infection, suggesting complex relationships between eosinophils, ICS response, and the airway microbiome.
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Affiliation(s)
- Dave Singh
- Division of Infection, Immunity & Respiratory Medicine, University of Manchester, Manchester University NHS Hospital Trust, Manchester, UK
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40
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Miravitlles M, Monteagudo M, Solntseva I, Alcázar B. Blood Eosinophil Counts and Their Variability and Risk of Exacerbations in COPD: A Population-Based Study. Arch Bronconeumol 2020; 57:13-20. [PMID: 32061402 DOI: 10.1016/j.arbres.2019.12.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 11/30/2019] [Accepted: 12/16/2019] [Indexed: 01/21/2023]
Abstract
BACKGROUND There is controversy regarding the role of blood eosinophil levels as a biomarker of exacerbation risk in chronic obstructive pulmonary disease (COPD). Our aim was to quantify blood eosinophil levels and determine the risk of exacerbations associated with these levels and their variability. METHODS Observational, retrospective, population-based study with longitudinal follow-up in patients with COPD identified in a primary care electronic medical record database in Catalonia, Spain, covering 80% of the general population. Patients were classified into 4 groups using the following cut-offs: (a) <150cells/μl; (b) ≥150 and <300cells/μl; (c) ≥300 and <500cells/μl; (d) ≥500cells/μl. RESULTS A total of 57,209 patients were identified with a mean age of 70.2 years, a mean FEV1(% predicted) of 64.1% and 51.6% had at least one exacerbation the previous year. The number of exacerbations in the previous year was higher in patients with the lowest and the highest eosinophil levels compared with the intermediate groups. During follow-up the number of exacerbations was slightly higher in the group with the lowest blood eosinophil levels and in those with higher variability in eosinophil counts, but ROC curves did not identify a reliable threshold of blood eosinophilia to discriminate an increased risk of exacerbations. CONCLUSIONS Our results do not support the use of blood eosinophil count as a reliable biomarker of the risk of exacerbation in COPD in a predominantly non-exacerbating population. Of note was that the small group of patients with the highest variability in blood eosinophils more frequently presented exacerbations.
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Affiliation(s)
- Marc Miravitlles
- Pneumology Department. Hospital Universitari Vall d'Hebron/Vall d'Hebron Institut de Recerca (VHIR), Barcelona, Spain; Ciber de Enfermedades Respiratorias (CIBERES), Spain.
| | - Mònica Monteagudo
- Primary Care University Research Institute Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain; Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | - Iryna Solntseva
- Primary Care University Research Institute Jordi Gol (IDIAP Jordi Gol), Barcelona, Spain; Universitat Autònoma de Barcelona, Bellaterra (Cerdanyola del Vallès), Barcelona, Spain
| | - Bernardino Alcázar
- Ciber de Enfermedades Respiratorias (CIBERES), Spain; Respiratory Department, Hospital de Alta Resolución de Loja, Granada, Spain
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41
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The stability of blood Eosinophils in chronic obstructive pulmonary disease. Respir Res 2020; 21:15. [PMID: 31924207 PMCID: PMC6954589 DOI: 10.1186/s12931-020-1279-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 01/05/2020] [Indexed: 12/14/2022] Open
Abstract
Blood eosinophils are a predictive biomarker of inhaled corticosteroid response in chronic obstructive pulmonary disease (COPD). We investigated blood eosinophil stability over 1 year using the Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2019 thresholds of < 100, 100- < 300 and ≥ 300 eosinophils/μL in 225 patients from the COPDMAP cohort. Blood eosinophils showed good stability (rho: 0.71, p < 0.001, ICC 0.84), and 69.3% of patients remained in the same eosinophil category at 1 year. 85.3% of patients with eosinophils < 100 cells/μL had stable counts. The majority of blood eosinophil counts remain stable over 1 year using the GOLD 2019 thresholds.
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42
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Jo YS, Choe J, Shin SH, Koo HK, Lee WY, Kim YI, Ra SW, Yoo KH, Jung KS, Park HY, Park YB. Exhaled Nitric Oxide in Patients with Stable Chronic Obstructive Pulmonary Disease: Clinical Implications of the Use of Inhaled Corticosteroids. Tuberc Respir Dis (Seoul) 2020; 83:42-50. [PMID: 31905431 PMCID: PMC6953499 DOI: 10.4046/trd.2019.0050] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/06/2019] [Accepted: 10/18/2019] [Indexed: 12/17/2022] Open
Abstract
Background Fractional exhaled nitric oxide (FeNO) is regarded as a potential biomarker for
identifying eosinophilic inflammation. We aimed to evaluate the clinical implication of
FeNO and its influence on inhaled corticosteroids (ICS) prescription rate in Korean
chronic obstructive pulmonary disease (COPD) patients. Methods FeNO level and its association with clinical features were analyzed. Changes in the
prescription rate of ICS before and after FeNO measurement were identified. Results A total of 160 COPD patients were divided into increased (≥25 parts per billion
[ppb], n=74) and normal (<25 ppb, n=86) FeNO groups according to the
recommendations from the American Thoracic Society. Compared with the normal FeNO group,
the adjusted odds ratio for having history of asthma without wheezing and with wheezing
in the increased FeNO group were 2.96 (95% confidence interval [CI], 1.40–6.29)
and 4.24 (95% CI, 1.37–13.08), respectively. Only 21 out of 74 patients (28.4%)
with increased FeNO prescribed ICS-containing inhaler and 18 of 86 patients (20.9%) with
normal FeNO were given ICS-containing inhaler. Previous exacerbation, asthma, and
wheezing were the major factors to maintain ICS at normal FeNO level and not to initiate
ICS at increased FeNO level. Conclusion Increased FeNO was associated with the history of asthma irrespective of wheezing.
However, FeNO seemed to play a subsidiary role in the use of ICS-containing inhalers in
real-world clinics, which was determined with prior exacerbation and clinical features
suggesting Th2 inflammation.
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Affiliation(s)
- Yong Suk Jo
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Korea
| | - Junsu Choe
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sun Hye Shin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyeon Kyoung Koo
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Won Yeon Lee
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Yonsei University Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Yu Il Kim
- Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Korea
| | - Seung Won Ra
- Department of Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - Kwang Ha Yoo
- Division of Pulmonary and Allergy Medicine, Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Ki Suck Jung
- Divsion of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Hye Yun Park
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Yong Bum Park
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Korea.
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Golpe R, Dacal D, Sanjuán-López P, Martín-Robles I, Pérez-de-Llano LA. Plasma Eosinophil Count and Patient-Centered Events in Chronic Obstructive Pulmonary Disease in Real-Life Clinical Practice. Arch Bronconeumol 2019; 56:129-130. [PMID: 31722828 DOI: 10.1016/j.arbres.2019.09.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 08/09/2019] [Accepted: 09/02/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Rafael Golpe
- Servicio de Neumología, Hospital Universitario Lucus Augusti, Lugo, España.
| | - David Dacal
- Servicio de Neumología, Hospital Universitario Lucus Augusti, Lugo, España
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Singh D, Agusti A, Anzueto A, Barnes PJ, Bourbeau J, Celli BR, Criner GJ, Frith P, Halpin DMG, Han M, López Varela MV, Martinez F, Montes de Oca M, Papi A, Pavord ID, Roche N, Sin DD, Stockley R, Vestbo J, Wedzicha JA, Vogelmeier C. Global Strategy for the Diagnosis, Management, and Prevention of Chronic Obstructive Lung Disease: the GOLD science committee report 2019. Eur Respir J 2019; 53:13993003.00164-2019. [PMID: 30846476 DOI: 10.1183/13993003.00164-2019] [Citation(s) in RCA: 1024] [Impact Index Per Article: 204.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 02/22/2019] [Indexed: 12/17/2022]
Abstract
Precision medicine is a patient-specific approach that integrates all relevant clinical, genetic and biological information in order to optimise the therapeutic benefit relative to the possibility of side-effects for each individual. Recent clinical trials have shown that higher blood eosinophil counts are associated with a greater efficacy of inhaled corticosteroids (ICSs) in chronic obstructive pulmonary disease (COPD) patients. Blood eosinophil counts are a biomarker with potential to be used in clinical practice, to help target ICS treatment with more precision in COPD patients with a history of exacerbations despite appropriate bronchodilator treatment.The Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2017 pharmacological treatment algorithms, based on the ABCD assessment, can be applied relatively easily to treatment-naive individuals at initial presentation. However, their use is more problematic during follow-up in patients who are already on maintenance treatment. There is a need for a different system to guide COPD pharmacological management during follow-up.Recent large randomised controlled trials have provided important new information concerning the therapeutic effects of ICSs and long-acting bronchodilators on exacerbations. The new evidence regarding blood eosinophils and inhaled treatments, and the need to distinguish between initial and follow-up pharmacological management, led to changes in the GOLD pharmacological treatment recommendations. This article explains the evidence and rationale for the GOLD 2019 pharmacological treatment recommendations.
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Affiliation(s)
- Dave Singh
- University of Manchester, Manchester, UK
| | - Alvar Agusti
- Hospital Clínic, Universitat de Barcelona, CIBERES, Barcelona, Spain
| | - Antonio Anzueto
- University of Texas Health Science Center, San Antonio, TX, USA
| | | | - Jean Bourbeau
- McGill University Health Centre, Montreal, QC, Canada
| | | | - Gerard J Criner
- Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Peter Frith
- Flinders University College of Medicine and Public Health, Adelaide, Australia
| | | | - Meilan Han
- University of Michigan School of Medicine, Ann Arbor, MI, USA
| | | | - Fernando Martinez
- New York-Presbyterian Hospital, Weill Cornell Medical Center, New York, NY, USA
| | | | - Alberto Papi
- Cardiorespiratory and Internal Medicine Unit, Dept of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Ian D Pavord
- Respiratory Medicine Unit, Oxford Respiratory NIHR BRC, Nuffield Dept of Medicine, Oxford, UK
| | - Nicolas Roche
- Hôpital Cochin (AP-HP), University Paris Descartes, Paris, France
| | - Donald D Sin
- University of British Columbia, Vancouver, BC, Canada
| | | | | | | | - Claus Vogelmeier
- Dept of Medicine, Pulmonary and Critical Care Medicine, University Medical Center Giessen and Marburg, Philipps University Marburg, Member of the German Center for Lung Research (DZL), Marburg, Germany
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45
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Stockley RA, Halpin DMG, Celli BR, Singh D. Chronic Obstructive Pulmonary Disease Biomarkers and Their Interpretation. Am J Respir Crit Care Med 2019; 199:1195-1204. [DOI: 10.1164/rccm.201810-1860so] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Robert A. Stockley
- Lung Investigation Unit, Medicine, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
| | - David M. G. Halpin
- Department of Respiratory Medicine, Royal Devon & Exeter Hospital, Exeter, United Kingdom
| | - Bartolome R. Celli
- Pulmonary and Critical Care Department, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts; and
| | - Dave Singh
- Medicines Evaluation Unit, University of Manchester, Manchester University NHS Foundation Hospital Trust, Manchester, United Kingdom
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Current Controversies in Chronic Obstructive Pulmonary Disease. A Report from the Global Initiative for Chronic Obstructive Lung Disease Scientific Committee. Ann Am Thorac Soc 2019; 16:29-39. [DOI: 10.1513/annalsats.201808-557ps] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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47
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Agusti A, Fabbri LM, Singh D, Vestbo J, Celli B, Franssen FME, Rabe KF, Papi A. Inhaled corticosteroids in COPD: friend or foe? Eur Respir J 2018; 52:13993003.01219-2018. [PMID: 30190269 DOI: 10.1183/13993003.01219-2018] [Citation(s) in RCA: 139] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 08/23/2018] [Indexed: 12/28/2022]
Abstract
The efficacy, safety and positioning of inhaled corticosteroids (ICS) in the treatment of patients with chronic obstructive pulmonary disease (COPD) is much debated, since it can result in clear clinical benefits in some patients ("friend") but can be ineffective or even associated with undesired side effects, e.g. pneumonia, in others ("foe"). After critically reviewing the evidence for and against ICS treatment in patients with COPD, we propose that: 1) ICS should not be used as a single, stand-alone therapy in COPD; 2) patients most likely to benefit from the addition of ICS to long-acting bronchodilators include those with history of multiple or severe exacerbations despite appropriate maintenance bronchodilator use, particularly if blood eosinophils are >300 cells·µL-1, and those with a history of and/or concomitant asthma; and 3) the risk of pneumonia in COPD patients using ICS is higher in those with older age, lower body mass index (BMI), greater overall fragility, receiving higher ICS doses and those with blood eosinophils <100 cells·µL-1 All these factors must be carefully considered and balanced in any individual COPD patient before adding ICS to her/his maintenance bronchodilator treatment. Further research is needed to clarify some of these issues and firmly establish these recommendations.
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Affiliation(s)
- Alvar Agusti
- Respiratory Institute, Hospital Clinic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigacions Biomediques August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,CIBER Enfermedades Respiratorias, Spain
| | - Leonardo M Fabbri
- Dept of Medicine, University of Ferrara, Ferrara, Italy.,COPD Center, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Dave Singh
- Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK.,Manchester University NHS Foundation Trust, Manchester, UK.,Medicines Evaluation Unit, Manchester, UK
| | - Jørgen Vestbo
- Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, UK
| | - Bartolome Celli
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Frits M E Franssen
- Dept of Research and Education, CIRO, Horn, The Netherlands.,Dept of Respiratory Medicine, Maastricht University Medical Hospital, Maastricht, The Netherlands
| | - Klaus F Rabe
- LungenClinic Großhansdorf, member of the German Center for Lung Research (DZL), Großhansdorf, Germany.,Christian Albrechts Universität Kiel, member of the German Center for Lung Research (DZL), Kiel, Germany
| | - Alberto Papi
- Research Centre on Asthma and COPD, University of Ferrara, Ferrara, Italy
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48
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Long G, Wall J. Precision medicine in COPD: review of mepolizumab for eosinophilic COPD. Breathe (Sheff) 2018; 14:338-341. [PMID: 30519304 PMCID: PMC6269176 DOI: 10.1183/20734735.026318] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Mepolizumab can reduce exacerbation rates in those with frequently exacerbating, severe COPD and raised blood eosinophils; this represents a further advance in precision medicine for COPD and targeted therapies http://ow.ly/uklu30m4YcU.
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Affiliation(s)
- Gabriella Long
- University of Manchester, Manchester University Foundation Trust, Manchester, UK
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49
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Abstract
Bronchiectasis refers to abnormal dilatation of the bronchi. Airway dilatation can lead to failure of mucus clearance and increased risk of infection. Pathophysiological mechanisms of bronchiectasis include persistent bacterial infections, dysregulated immune responses, impaired mucociliary clearance and airway obstruction. These mechanisms can interact and self-perpetuate, leading over time to impaired lung function. Patients commonly present with productive cough and recurrent chest infections, and the diagnosis of bronchiectasis is based on clinical symptoms and radiological findings. Bronchiectasis can be the result of several different underlying disorders, and identifying the aetiology is crucial to guide management. Treatment is directed at reducing the frequency of exacerbations, improving quality of life and preventing disease progression. Although no therapy is licensed for bronchiectasis by regulatory agencies, evidence supports the effectiveness of airway clearance techniques, antibiotics and mucolytic agents, such as inhaled isotonic or hypertonic saline, in some patients. Bronchiectasis is a disabling disease with an increasing prevalence and can affect individuals of any age. A major challenge is the application of emerging phenotyping and endotyping techniques to identify the patient populations who would most benefit from a specific treatment, with the goal of better targeting existing and emerging treatments and achieving better outcomes.
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50
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Ernst P. Blood eosinophils in COPD and the future risk of pneumonia. Eur Respir J 2018; 52:52/1/1800981. [PMID: 30054350 DOI: 10.1183/13993003.00981-2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 06/12/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Pierre Ernst
- McGill University, Lady Davis Research Institute, Jewish General Hospital, Montreal, QC, Canada
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