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Sayers I, John C, Chen J, Hall IP. Genetics of chronic respiratory disease. Nat Rev Genet 2024; 25:534-547. [PMID: 38448562 DOI: 10.1038/s41576-024-00695-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2024] [Indexed: 03/08/2024]
Abstract
Chronic respiratory diseases, such as chronic obstructive pulmonary disease (COPD), asthma and interstitial lung diseases are frequently occurring disorders with a polygenic basis that account for a large global burden of morbidity and mortality. Recent large-scale genetic epidemiology studies have identified associations between genetic variation and individual respiratory diseases and linked specific genetic variants to quantitative traits related to lung function. These associations have improved our understanding of the genetic basis and mechanisms underlying common lung diseases. Moreover, examining the overlap between genetic associations of different respiratory conditions, along with evidence for gene-environment interactions, has yielded additional biological insights into affected molecular pathways. This genetic information could inform the assessment of respiratory disease risk and contribute to stratified treatment approaches.
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Affiliation(s)
- Ian Sayers
- NIHR Nottingham Biomedical Research Centre, University of Nottingham, University Park, Nottingham, UK
- Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, UK
| | - Catherine John
- University of Leicester, Leicester, UK
- University Hospitals of Leicester, Leicester, UK
| | - Jing Chen
- University of Leicester, Leicester, UK
| | - Ian P Hall
- NIHR Nottingham Biomedical Research Centre, University of Nottingham, University Park, Nottingham, UK.
- Biodiscovery Institute, School of Medicine, University of Nottingham, University Park, Nottingham, UK.
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2
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Joshi PR. Pulmonary Diseases in Older Patients: Understanding and Addressing the Challenges. Geriatrics (Basel) 2024; 9:34. [PMID: 38525751 PMCID: PMC10961796 DOI: 10.3390/geriatrics9020034] [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: 01/11/2024] [Revised: 02/22/2024] [Accepted: 03/04/2024] [Indexed: 03/26/2024] Open
Abstract
As the global population ages, pulmonary diseases among older people have emerged as a significant and growing public health concern. The increasing incidence of these conditions has led to higher rates of morbidity and mortality among older adults. This perspective study offers a thorough overview of the prevalent pulmonary diseases affecting the elderly demographic. It delves into the challenges encountered during the diagnosis and management of these conditions in older individuals, considering factors such as comorbidities, functional limitations, and medication complexities. Furthermore, innovative strategies and personalized interventions such as precision medicine, advanced therapies, telemedicine solutions, and patient-centered support systems aimed at enhancing the care provided to older individuals grappling with pulmonary disorders are thoroughly explored. By addressing the unique needs and complexities of this vulnerable population, healthcare systems can strive towards improving outcomes and enhancing the quality of life for elderly individuals affected by pulmonary diseases.
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Affiliation(s)
- Pushpa Raj Joshi
- Institute of General Practice and Family Medicine, Martin-Luther-University Halle-Wittenberg, 06112 Halle (Saale), Germany
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Odimba U, Senthilselvan A, Farrell J, Gao Z. Sex-Specific Genetic Determinants of Asthma-COPD Phenotype and COPD in Middle-Aged and Older Canadian Adults: An Analysis of CLSA Data. COPD 2023; 20:233-247. [PMID: 37466093 DOI: 10.1080/15412555.2023.2229906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/22/2023] [Accepted: 06/20/2023] [Indexed: 07/20/2023]
Abstract
The etiology of sex differences in the risk of asthma-COPD phenotype and COPD is still not completely understood. Genetic and environmental risk factors are commonly believed to play an important role. This study aims to identify sex-specific genetic markers associated with asthma-COPD phenotype and COPD using the Canadian Longitudinal Study on Aging (CLSA) Baseline Comprehensive and Genomic data. There were a total of 1,415 COPD cases. Out of them, 504 asthma-COPD phenotype cases were identified. 20,524 participants without a diagnosis of asthma and COPD served as controls. We performed genome-wide SNP-by-sex interaction analysis. SNPs with an interaction p-value < 10-5 were included in a sex-stratified multivariable logistic regression for asthma-COPD phenotype and COPD outcomes. 18 and 28 SNPs had a significant interaction term p-value < 10-5 with sex in the regression analyses of asthma-COPD phenotype and COPD outcomes, respectively. Sex-stratified multivariable analysis of asthma-COPD phenotype showed that 7 SNPs in/near SMYD3, FHIT, ZNF608, RIMBP2, ZNF133, BPIFB1, and S100B loci were significant in males. Sex-stratified multivariable analysis of COPD showed that 8 SNPs in/near MAGI1, COX18, OSTC, ELOVL5, C7orf72 FGF14, and NKAIN4 were significant in males, and 4 SNPs in/near genes CAMTA1, SATB2, PDE10A, and LINC00908 were significant in females. An SNP in the ZPBP gene was associated with COPD in both males and females. Identification of sex-specific loci associated with asthma-COPD phenotype and COPD may offer valuable evidence toward a better understanding of the sex-specific differences in the pathophysiology of the diseases.
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Affiliation(s)
- Ugochukwu Odimba
- Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University, St. John's, Canada
| | | | - Jamie Farrell
- Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University, St. John's, Canada
- Faculty of Medicine, Health Sciences Centre (Respirology Department), Memorial University, St John's, Newfoundland and Labrador, Canada
| | - Zhiwei Gao
- Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University, St. John's, Canada
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Moll M, Sordillo JE, Ghosh AJ, Hayden LP, McDermott G, McGeachie MJ, Dahlin A, Tiwari A, Manmadkar MG, Abston ED, Pavuluri C, Saferali A, Begum S, Ziniti JP, Gulsvik A, Bakke PS, Aschard H, Iribarren C, Hersh CP, Sparks JA, Hobbs BD, Lasky-Su JA, Silverman EK, Weiss ST, Wu AC, Cho MH. Polygenic risk scores identify heterogeneity in asthma and chronic obstructive pulmonary disease. J Allergy Clin Immunol 2023; 152:1423-1432. [PMID: 37595761 PMCID: PMC10841234 DOI: 10.1016/j.jaci.2023.08.002] [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: 01/11/2023] [Revised: 07/27/2023] [Accepted: 08/08/2023] [Indexed: 08/20/2023]
Abstract
BACKGROUND Asthma and chronic obstructive pulmonary disease (COPD) have distinct and overlapping genetic and clinical features. OBJECTIVE We sought to test the hypothesis that polygenic risk scores (PRSs) for asthma (PRSAsthma) and spirometry (FEV1 and FEV1/forced vital capacity; PRSspiro) would demonstrate differential associations with asthma, COPD, and asthma-COPD overlap (ACO). METHODS We developed and tested 2 asthma PRSs and applied the higher performing PRSAsthma and a previously published PRSspiro to research (Genetic Epidemiology of COPD study and Childhood Asthma Management Program, with spirometry) and electronic health record-based (Mass General Brigham Biobank and Genetic Epidemiology Research on Adult Health and Aging [GERA]) studies. We assessed the association of PRSs with COPD and asthma using modified random-effects and binary-effects meta-analyses, and ACO and asthma exacerbations in specific cohorts. Models were adjusted for confounders and genetic ancestry. RESULTS In meta-analyses of 102,477 participants, the PRSAsthma (odds ratio [OR] per SD, 1.16 [95% CI, 1.14-1.19]) and PRSspiro (OR per SD, 1.19 [95% CI, 1.17-1.22]) both predicted asthma, whereas the PRSspiro predicted COPD (OR per SD, 1.25 [95% CI, 1.21-1.30]). However, results differed by cohort. The PRSspiro was not associated with COPD in GERA and Mass General Brigham Biobank. In the Genetic Epidemiology of COPD study, the PRSAsthma (OR per SD: Whites, 1.3; African Americans, 1.2) and PRSspiro (OR per SD: Whites, 2.2; African Americans, 1.6) were both associated with ACO. In GERA, the PRSAsthma was associated with asthma exacerbations (OR, 1.18) in Whites; the PRSspiro was associated with asthma exacerbations in White, LatinX, and East Asian participants. CONCLUSIONS PRSs for asthma and spirometry are both associated with ACO and asthma exacerbations. Genetic prediction performance differs in research versus electronic health record-based cohorts.
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Affiliation(s)
- Matthew Moll
- Department of Medicine, Channing Division of Network Medicine, Division of Pulmonary and Critical Care Medicine, Harvard Medical School, Boston, Mass; Harvard Medical School, Brigham and Women's Hospital, Boston, Mass
| | - Joanne E Sordillo
- Department of Population Medicine, PRecisiOn Medicine Translational Research (PROMoTeR) Center, Harvard Medical School and Harvard Pilgrim Health Care, Boston, Mass
| | - Auyon J Ghosh
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, SUNY Upstate Medical Center, Syracuse, NY
| | - Lystra P Hayden
- Department of Pediatrics, Division of Pulmonary Medicine, Boston Children's Hospital, Harvard Medical School, Massachusetts General Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Gregory McDermott
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston, Mass
| | - Michael J McGeachie
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Amber Dahlin
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Anshul Tiwari
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Monica G Manmadkar
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Eric D Abston
- Department of Thoracic Surgery, Massachusetts General Hospital, Boston, Mass
| | - Chandan Pavuluri
- Department of Medicine, Channing Division of Network Medicine, Division of Pulmonary and Critical Care Medicine, Harvard Medical School, Boston, Mass; Harvard Medical School, Brigham and Women's Hospital, Boston, Mass
| | - Aabida Saferali
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Sofina Begum
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - John P Ziniti
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Amund Gulsvik
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Per S Bakke
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Hugues Aschard
- Department of Computational Biology, Institut Pasteur, Universit de Paris, Paris, France
| | - Carlos Iribarren
- Division of Research, Kaiser Permanente Northern California, Oakland, Calif
| | - Craig P Hersh
- Department of Medicine, Channing Division of Network Medicine, Division of Pulmonary and Critical Care Medicine, Harvard Medical School, Boston, Mass; Harvard Medical School, Brigham and Women's Hospital, Boston, Mass
| | - Jeffrey A Sparks
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Division of Rheumatology, Inflammation, and Immunity, Brigham and Women's Hospital, Boston, Mass
| | - Brian D Hobbs
- Department of Medicine, Channing Division of Network Medicine, Division of Pulmonary and Critical Care Medicine, Harvard Medical School, Boston, Mass; Harvard Medical School, Brigham and Women's Hospital, Boston, Mass
| | - Jessica A Lasky-Su
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Edwin K Silverman
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Scott T Weiss
- Harvard Medical School, Brigham and Women's Hospital, Boston, Mass; Department of Medicine, Channing Division of Network Medicine, Brigham and Women's Hospital, Massachusetts General Hospital, Boston, Mass
| | - Ann Chen Wu
- Department of Population Medicine, PRecisiOn Medicine Translational Research (PROMoTeR) Center, Harvard Medical School and Harvard Pilgrim Health Care, Boston, Mass
| | - Michael H Cho
- Department of Medicine, Channing Division of Network Medicine, Division of Pulmonary and Critical Care Medicine, Harvard Medical School, Boston, Mass; Harvard Medical School, Brigham and Women's Hospital, Boston, Mass.
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Lee JH, Kim S, Kim YJ, Lee SW, Lee JS, Oh YM. COPD Risk Factor Profiles in General Population and Referred Patients: Potential Etiotypes. Int J Chron Obstruct Pulmon Dis 2023; 18:2509-2520. [PMID: 37965078 PMCID: PMC10642581 DOI: 10.2147/copd.s427774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 11/01/2023] [Indexed: 11/16/2023] Open
Abstract
Purpose To identify the risk factors for chronic obstructive pulmonary disease (COPD) in view of potential etiotypes in a general population and referred COPD patients. Patients and Methods We performed a cross-sectional observational study utilizing two distinct datasets: a dataset of a general population including 2430 subjects with COPD from the Korea National Health and Nutrition Examination Survey (KNHANES) and another dataset of referral clinics including 579 patients with COPD from the Korean Obstructive Lung Disease (KOLD). Results The mean age of both groups was 67 years, and 71.2% and 93.8% were male in the COPD subjects from the KNHANES and the KOLD, respectively. The mean forced expiratory volume in 1 second of predicted value was 79.1% (KNHANES) and 55.4% (KOLD). The frequency of risk factors of cigarette smoking (C), infection (I), pollution (P), and asthma (A) was 54.6%, 9.4%, 10.7%, and 7.9%, respectively, in the KNHANES COPD subjects, and 88.4%, 26.6%, 41.6%, and 35.2%, respectively, in the KOLD COPD subjects. Risk factors were unidentified in 32.6% (KNHANES) and 3.1% (KOLD) of COPD subjects. Additionally, 14.1% and 66.2% of subjects with COPD had two or more risk factors in the KNHANES and KOLD, respectively. Conclusion The profiles of risk factors C, I, P, and A were identified and appeared to be different among the two COPD groups from a general population or referral clinics. In some of the COPD subjects, risk factors were not identified, so we should endeavour to find out unidentified COPD risk factors, especially in the general population.
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Affiliation(s)
- Jang Ho Lee
- Department of Pulmonary and Critical Care Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sehee Kim
- Department of Clinical Epidemiology and Biostatistics, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ye-Jee Kim
- Department of Clinical Epidemiology and Biostatistics, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sei Won Lee
- Department of Pulmonary and Critical Care Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jae Seung Lee
- Department of Pulmonary and Critical Care Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yeon-Mok Oh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Tesfaigzi Y, Curtis JL, Petrache I, Polverino F, Kheradmand F, Adcock IM, Rennard SI. Does Chronic Obstructive Pulmonary Disease Originate from Different Cell Types? Am J Respir Cell Mol Biol 2023; 69:500-507. [PMID: 37584669 PMCID: PMC10633838 DOI: 10.1165/rcmb.2023-0175ps] [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: 05/15/2023] [Accepted: 08/16/2023] [Indexed: 08/17/2023] Open
Abstract
The onset of chronic obstructive pulmonary disease (COPD) is heterogeneous, and current approaches to define distinct disease phenotypes are lacking. In addition to clinical methodologies, subtyping COPD has also been challenged by the reliance on human lung samples from late-stage diseases. Different COPD phenotypes may be initiated from the susceptibility of different cell types to cigarette smoke, environmental pollution, and infections at early stages that ultimately converge at later stages in airway remodeling and destruction of the alveoli when the disease is diagnosed. This perspective provides discussion points on how studies to date define different cell types of the lung that can initiate COPD pathogenesis, focusing on the susceptibility of macrophages, T and B cells, mast cells, dendritic cells, endothelial cells, and airway epithelial cells. Additional cell types, including fibroblasts, smooth muscle cells, neuronal cells, and other rare cell types not covered here, may also play a role in orchestrating COPD. Here, we discuss current knowledge gaps, such as which cell types drive distinct disease phenotypes and/or stages of the disease and which cells are primarily affected by the genetic variants identified by whole genome-wide association studies. Applying new technologies that interrogate the functional role of a specific cell type or a combination of cell types as well as single-cell transcriptomics and proteomic approaches are creating new opportunities to understand and clarify the pathophysiology and thereby the clinical heterogeneity of COPD.
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Affiliation(s)
- Yohannes Tesfaigzi
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Jeffrey L. Curtis
- Medical Service, VA Ann Arbor Healthcare System, Ann Arbor, Michigan
- Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Michigan
| | - Irina Petrache
- Division of Pulmonary Critical Care and Sleep Medicine, National Jewish Health, Denver, Colorado
- University of Colorado, Denver, Colorado
| | - Francesca Polverino
- Section of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, Baylor University, Houston, Texas
| | - Farrah Kheradmand
- Section of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, College of Medicine, Baylor University, Houston, Texas
| | - Ian M. Adcock
- Department of Medicine, National Heart and Lung Institute, Imperial College London, London, United Kingdom; and
| | - Stephen I. Rennard
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
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Dai Q, Zhu X, Zhang J, Dong Z, Pompeo E, Zheng J, Shi J. The utility of quantitative computed tomography in cohort studies of chronic obstructive pulmonary disease: a narrative review. J Thorac Dis 2023; 15:5784-5800. [PMID: 37969311 PMCID: PMC10636446 DOI: 10.21037/jtd-23-1421] [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: 09/08/2023] [Accepted: 09/27/2023] [Indexed: 11/17/2023]
Abstract
Background and Objective Chronic obstructive pulmonary disease (COPD) is a significant contributor to global morbidity and mortality. Quantitative computed tomography (QCT), a non-invasive imaging modality, offers the potential to assess lung structure and function in COPD patients. Amidst the coronavirus disease 2019 (COVID-19) pandemic, chest computed tomography (CT) scans have emerged as a viable alternative for assessing pulmonary function (e.g., spirometry), minimizing the risk of aerosolized virus transmission. However, the clinical application of QCT measurements is not yet widespread enough, necessitating broader validation to determine its usefulness in COPD management. Methods We conducted a search in the PubMed database in English from January 1, 2013 to April 20, 2023, using keywords and controlled vocabulary related to QCT, COPD, and cohort studies. Key Content and Findings Existing studies have demonstrated the potential of QCT in providing valuable information on lung volume, airway geometry, airway wall thickness, emphysema, and lung tissue density in COPD patients. Moreover, QCT values have shown robust correlations with pulmonary function tests, and can predict exacerbation risk and mortality in patients with COPD. QCT can even discern COPD subtypes based on phenotypic characteristics such as emphysema predominance, supporting targeted management and interventions. Conclusions QCT has shown promise in cohort studies related to COPD, since it can provide critical insights into the pathogenesis and progression of the disease. Further research is necessary to determine the clinical significance of QCT measurements for COPD management.
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Affiliation(s)
- Qi Dai
- School of Medicine, Tongji University, Shanghai, China
- Department of Radiology, Ningbo No.2 Hospitall, Ningbo, China
| | - Xiaoxiao Zhu
- Department of Respiratory and Critical Care Medicine, Ningbo No.2 Hospital, Ningbo, China
| | - Jingfeng Zhang
- Department of Radiology, Ningbo No.2 Hospitall, Ningbo, China
| | - Zhaoxing Dong
- Department of Respiratory and Critical Care Medicine, Ningbo No.2 Hospital, Ningbo, China
| | - Eugenio Pompeo
- Department of Thoracic Surgery, Policlinico Tor Vergata University, Rome, Italy
| | - Jianjun Zheng
- Department of Radiology, Ningbo No.2 Hospitall, Ningbo, China
| | - Jingyun Shi
- School of Medicine, Tongji University, Shanghai, China
- Department of Radiology, Shanghai Pulmonary Hospital, School of Medicine, Tongji University, Shanghai, China
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Plaza Moral V, Alobid I, Álvarez Rodríguez C, Blanco Aparicio M, Ferreira J, García G, Gómez-Outes A, Garín Escrivá N, Gómez Ruiz F, Hidalgo Requena A, Korta Murua J, Molina París J, Pellegrini Belinchón FJ, Plaza Zamora J, Praena Crespo M, Quirce Gancedo S, Sanz Ortega J, Soto Campos JG. GEMA 5.3. Spanish Guideline on the Management of Asthma. OPEN RESPIRATORY ARCHIVES 2023; 5:100277. [PMID: 37886027 PMCID: PMC10598226 DOI: 10.1016/j.opresp.2023.100277] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2023] Open
Abstract
The Spanish Guideline on the Management of Asthma, better known by its acronym in Spanish GEMA, has been available for more than 20 years. Twenty-one scientific societies or related groups both from Spain and internationally have participated in the preparation and development of the updated edition of GEMA, which in fact has been currently positioned as the reference guide on asthma in the Spanish language worldwide. Its objective is to prevent and improve the clinical situation of people with asthma by increasing the knowledge of healthcare professionals involved in their care. Its purpose is to convert scientific evidence into simple and easy-to-follow practical recommendations. Therefore, it is not a monograph that brings together all the scientific knowledge about the disease, but rather a brief document with the essentials, designed to be applied quickly in routine clinical practice. The guidelines are necessarily multidisciplinary, developed to be useful and an indispensable tool for physicians of different specialties, as well as nurses and pharmacists. Probably the most outstanding aspects of the guide are the recommendations to: establish the diagnosis of asthma using a sequential algorithm based on objective diagnostic tests; the follow-up of patients, preferably based on the strategy of achieving and maintaining control of the disease; treatment according to the level of severity of asthma, using six steps from least to greatest need of pharmaceutical drugs, and the treatment algorithm for the indication of biologics in patients with severe uncontrolled asthma based on phenotypes. And now, in addition to that, there is a novelty for easy use and follow-up through a computer application based on the chatbot-type conversational artificial intelligence (ia-GEMA).
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Affiliation(s)
| | - Isam Alobid
- Otorrinolaringología, Hospital Clinic de Barcelona, España
| | | | | | - Jorge Ferreira
- Hospital de São Sebastião – CHEDV, Santa Maria da Feira, Portugal
| | | | - Antonio Gómez-Outes
- Farmacología clínica, Agencia Española de Medicamentos y Productos Sanitarios (AEMPS), Madrid, España
| | - Noé Garín Escrivá
- Farmacia Hospitalaria, Hospital de la Santa Creu i Sant Pau, Barcelona, España
| | | | | | - Javier Korta Murua
- Neumología Pediátrica, Hospital Universitario Donostia, Donostia-San, Sebastián, España
| | - Jesús Molina París
- Medicina de familia, semFYC, Centro de Salud Francia, Fuenlabrada, Dirección Asistencial Oeste, Madrid, España
| | | | - Javier Plaza Zamora
- Farmacia comunitaria, Farmacia Dr, Javier Plaza Zamora, Mazarrón, Murcia, España
| | | | | | - José Sanz Ortega
- Alergología Pediátrica, Hospital Católico Universitario Casa de Salud, Valencia, España
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Daniel J, Gupta R, Thangakunam B, Christopher DJ. Undiagnosed Asthma-COPD overlap among patients diagnosed as Asthma and COPD in a referral hospital, India. Heliyon 2023; 9:e14711. [PMID: 37025820 PMCID: PMC10070599 DOI: 10.1016/j.heliyon.2023.e14711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 02/26/2023] [Accepted: 03/15/2023] [Indexed: 03/29/2023] Open
Abstract
Patients who have features of both Asthma & COPD are now known as Asthma COPD overlap (ACO). Prevalence of ACO based on the Global Initiative for Asthma (GINA) and Global initiative for obstructive lung disease (GOLD) Syndromic Approach is scarce. In this cross-sectional observational study, we recruited physician-diagnosed-pAsthma, pCOPD & pACO by simple random sampling. Clinical features, spirometry, 6-min walk test, Serum Immunoglobulin E, % blood eosinophils and chest x-rays were reviewed. Syndromic approach was applied, and the diagnosis was reclassified accordingly. In all, 877 patients were included (Male = 445, Female = 432). Physician diagnosis for these were: pAsthma-713, pCOPD-157 and pACO-7. They were reclassified using the Syndromic approach as: sAsthma, sCOPD and sACO. The 713 pAsthmatics were reclassified as follows: sAsthma-684 (95.94%), sCOPD-12 (1.68%) and sACO-17 (2.38%). Of the 157 pCOPD patients, 91 (57.96%) were reclassified as sCOPD, 23 (14.6%) as sACO, and 17 (927.38%) as sAsthma. Of the 7 previously diagnosed pACO patients, only 1 (14.28%) was reclassified as sACO, 5 (71.42%) as sAsthma and 1 (14.28%) as sCOPD. sCOPD patients had more exacerbations (52.88% vs 46.34%, p = 0.479), critical care admissions (16.35% vs 7.32%, p = 0.157) and intubations (17.31% vs 9.76%, p = 0.255) compared to sACO patients, the latter had more events than sAsthma patients: exacerbations 46.34% vs 10.11% (p < 0.001), critical care admissions 7.32% vs 1.64% (p = 0.010) and intubations 9.76% vs 1.5% (p < 0.001). The syndromic approach helped us to identify ACO and also more appropriately classified COPD & Asthma. There was a significant difference between physician diagnosis and diagnosis using Syndromic Approach. It revealed considerable misclassification of several Asthmatic and ACO subjects, who could have been denied inhaled corticosteroids, as they were wrongly categorised as COPD by physician diagnosis.
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Zheng Z, Li J, Liu Y, Li L, Huang T, Huang Y, Song S, Gao J. Polymorphisms in the FCER2 gene have associations with asthma and chronic obstructive pulmonary disease. J Thorac Dis 2023; 15:589-599. [PMID: 36910110 PMCID: PMC9992556 DOI: 10.21037/jtd-22-820] [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: 06/13/2022] [Accepted: 01/13/2023] [Indexed: 02/08/2023]
Abstract
Background Asthma and chronic obstructive pulmonary disease (COPD) are heterogenetic diseases and exhibit many similarities. Dutch hypothesis proposed that these two diseases may have common genetic origins. This study aims to investigate whether asthma and COPD share a common genetic background in Chinese patients. Methods In this case-control study, single nucleotide polymorphisms (SNPs) were genotyped using SNaPshot. Haplotype disease analysis and haplotype phenotype analysis were applied to assess the relationship between three polymorphisms of the FCER2 gene and the risk of COPD/asthma. Additionally, associations between polymorphisms of the FCER2 gene and phenotypes were analyzed. Results We detected ten SNPs of seven genes (FCER1A, FCGR2A, FCGR2B, CHI3L1, ADRB2, STAT6, and FCER2) expressed by airway epithelial cells. We detected genotypes and allele distributions in 251 COPD patients, 597 asthma patients, and 632 healthy controls. A significant difference was found in the FCER2 gene (rs28364072) between COPD patients and controls (P=0.009). Significant differences were observed in the genotype and allele distributions of rs1801274 (FCGR2A), rs12368672 (STAT6), and rs2228137 (FCER2) between asthma patients and controls (P=0.004, 0.007 and 0.010, respectively). Notably, polymorphisms of FCER2 gene were associated with the risk of both COPD (P=0.009 for rs28364072) and asthma (P=0.01 for rs2228137). Haplotype analysis revealed that haplotype T-G-T (alleles of rs28364072, rs2228137, and rs3760687, respectively) was significantly associated with a higher risk of asthma [odds ratios (OR) =2.25, 95% confidence interval (CI): 1.26-4.01, P=0.006]. Further analysis showed that the C-A-C haplotype and C-G-T haplotype were associated with increased blood eosinophils in either COPD or asthma patients (P=0.034, and P<0.001, respectively). Moreover, haplotypes C-A-C, C-G-C, and T-G-C showed significant associations with serum IgE levels in asthma patients (P=0.002, 0.041, and 0.004, respectively). Conclusions Our data suggest that the FCER2 gene might associate with predisposition to asthma and COPD, while FCER2 haplotypes were associated with pulmonary function measurements and blood eosinophils counts in both diseases. Our findings support the common genetic basis for asthma and COPD, suggesting a potential therapeutic target for the two diseases.
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Affiliation(s)
- Zhoude Zheng
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Jia Li
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Yi Liu
- Department of Respiratory Medicine, Civil Aviation General Hospital, Beijing, China
| | - Lun Li
- Department of Allergy, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Tingting Huang
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Yilin Huang
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Siyao Song
- Department of Respiratory Medicine, Civil Aviation General Hospital, Beijing, China
| | - Jinming Gao
- Department of Pulmonary and Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
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11
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Queiroz Almeida D, Paciência I, Moreira C, Cavaleiro Rufo J, Moreira A, Santos AC, Barros H, Ribeiro AI. Green and blue spaces and lung function in the Generation XXI cohort: a life-course approach. Eur Respir J 2022; 60:2103024. [PMID: 35896209 DOI: 10.1183/13993003.03024-2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 06/28/2022] [Indexed: 12/27/2022]
Abstract
BACKGROUND Exposure to natural environments may affect respiratory health. This study examined the association of exposure to green and blue spaces with lung function in children, and assessed the mediation effect of air pollution and physical activity. METHODS The study used data from the Generation XXI, a population-based birth cohort from the Porto Metropolitan Area (Portugal). Residential Normalised Difference Vegetation Index (NDVI) at different buffers (100, 250 and 500 m), the accessibility to urban green spaces (UGS) within 400 and 800 m and the minimum distance to the nearest UGS and to the nearest blue spaces were assessed at birth, 4, 7 and 10 years of age. Three life-course measures were calculated: averaged exposure, early-life exposure (birth) and exposure trend over time (change in exposure). Forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1) and forced expiratory flow between 25% and 75% of FVC (FEF25-75%) at 10 years were used as outcomes. To assess associations, linear regression models and path analysis were used. RESULTS This study included 3278 children. The adjusted models showed that increasing the NDVI exposure over time within 100 m of the child's residence was associated with higher values of FEV1 (L) and FEF25-75% (L·s-1) (β 0.01, 95% CI 0.0002-0.03 and β 0.02, 95% CI 0.001-0.05, respectively). No significant associations were observed for the remaining measures of exposure, and no mediation effect was found for pollution or physical activity. CONCLUSION Increasing exposure to greenness at close proximity from residences was associated with improved lung function. While the mechanism remains unknown, this study brings evidence that city greening may improve children's respiratory health.
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Affiliation(s)
- Diogo Queiroz Almeida
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Porto, Portugal
- Departamento de Ciências da Saúde Pública e Forenses e Educação Médica, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
- Unidade de Saúde Pública, Unidade Local de Saúde de Matosinhos, Matosinhos, Portugal
- Equal contributors
| | - Inês Paciência
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Porto, Portugal
- Equal contributors
| | - Carla Moreira
- Cmat - Centre of Mathematics School of Sciences, University of Minho, Braga, Portugal
| | - João Cavaleiro Rufo
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Porto, Portugal
| | - André Moreira
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Porto, Portugal
- Faculdade de Medicina da Universidade do Porto, Porto, Portugal
- Serviço de Imunoalergologia, Centro Hospitalar Universitário de São João, Porto, Portugal
- Faculdade de Ciências da Nutrição e Alimentação da Universidade do Porto, Porto, Portugal
| | - Ana Cristina Santos
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Porto, Portugal
- Faculdade de Medicina da Universidade do Porto, Porto, Portugal
| | - Henrique Barros
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Porto, Portugal
- Faculdade de Medicina da Universidade do Porto, Porto, Portugal
| | - Ana Isabel Ribeiro
- EPIUnit - Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Porto, Portugal
- Faculdade de Medicina da Universidade do Porto, Porto, Portugal
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12
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Mendy A, Mersha TB. Comorbidities in childhood-onset and adult-onset asthma. Ann Allergy Asthma Immunol 2022; 129:327-334. [PMID: 35595004 PMCID: PMC10265950 DOI: 10.1016/j.anai.2022.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/03/2022] [Accepted: 05/06/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Age of asthma onset has emerged as an important determinant of asthma phenotypes; however, the comorbidities that predominate in either childhood- or adult-onset asthma are not known. OBJECTIVE To identify comorbidities associated with adult-onset asthma vs childhood-onset asthma and with age of asthma diagnosis. METHODS We analyzed data on 27,437 adult participants in the National Health and Nutrition Examination Surveys conducted from 2001 to 2018. Logistic regression adjusted for covariates was used to identify comorbidities associated with the asthma phenotypes and age of asthma diagnosis. RESULTS Approximately 12.6% of participants were ever diagnosed with asthma; the prevalence of childhood-onset (before 18 years old) and adult-onset (≥ 18 years old) current asthma was 2.7% and 5.5%, respectively. After adjustment for covariates including age, adult-onset asthma was associated with higher odds of obesity (odds ratio [OR], 1.46; 95% confidence interval [CI], 1.09-1.96), hypercholesterolemia (OR, 1.67; 95% CI, 1.08-2.56), borderline high serum triglycerides (OR, 1.78; 95% CI, 1.17-2.71), and osteoarthritis (OR, 1.52; 95% CI, 1.04-2.20) than was childhood-onset asthma. Older age of asthma diagnosis (per 5-year increase) was also associated with higher odds of diabetes (OR, 1.04; 95% CI, 1.00-1.07) and hypertension (OR, 1.05; 95% CI, 1.02-1.07), whereas younger age of asthma diagnosis was associated with higher odds of chronic obstructive pulmonary disease (OR, 1.12; 95% CI, 1.04-1.19). CONCLUSION Age- and covariates-adjusted prevalence of obesity, dyslipidemia, arthritis, diabetes, and hypertension is higher in adult-onset asthma than in childhood-onset asthma, and with older age of asthma diagnosis. Conversely, the prevalence of chronic obstructive pulmonary disease increases with younger age of asthma diagnosis.
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Affiliation(s)
- Angelico Mendy
- Division of Epidemiology, Department of Environmental and Public Health Sciences, University of Cincinnati College of Medicine, Cincinnati, Ohio.
| | - Tesfaye B Mersha
- Division of Asthma Research, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio
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13
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Dailah HG. Therapeutic Potential of Small Molecules Targeting Oxidative Stress in the Treatment of Chronic Obstructive Pulmonary Disease (COPD): A Comprehensive Review. Molecules 2022; 27:molecules27175542. [PMID: 36080309 PMCID: PMC9458015 DOI: 10.3390/molecules27175542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/21/2022] [Accepted: 08/25/2022] [Indexed: 12/02/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is an increasing and major global health problem. COPD is also the third leading cause of death worldwide. Oxidative stress (OS) takes place when various reactive species and free radicals swamp the availability of antioxidants. Reactive nitrogen species, reactive oxygen species (ROS), and their counterpart antioxidants are important for host defense and physiological signaling pathways, and the development and progression of inflammation. During the disturbance of their normal steady states, imbalances between antioxidants and oxidants might induce pathological mechanisms that can further result in many non-respiratory and respiratory diseases including COPD. ROS might be either endogenously produced in response to various infectious pathogens including fungi, viruses, or bacteria, or exogenously generated from several inhaled particulate or gaseous agents including some occupational dust, cigarette smoke (CS), and air pollutants. Therefore, targeting systemic and local OS with therapeutic agents such as small molecules that can increase endogenous antioxidants or regulate the redox/antioxidants system can be an effective approach in treating COPD. Various thiol-based antioxidants including fudosteine, erdosteine, carbocysteine, and N-acetyl-L-cysteine have the capacity to increase thiol content in the lungs. Many synthetic molecules including inhibitors/blockers of protein carbonylation and lipid peroxidation, catalytic antioxidants including superoxide dismutase mimetics, and spin trapping agents can effectively modulate CS-induced OS and its resulting cellular alterations. Several clinical and pre-clinical studies have demonstrated that these antioxidants have the capacity to decrease OS and affect the expressions of several pro-inflammatory genes and genes that are involved with redox and glutathione biosynthesis. In this article, we have summarized the role of OS in COPD pathogenesis. Furthermore, we have particularly focused on the therapeutic potential of numerous chemicals, particularly antioxidants in the treatment of COPD.
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Affiliation(s)
- Hamad Ghaleb Dailah
- Research and Scientific Studies Unit, College of Nursing, Jazan University, Jazan 45142, Saudi Arabia
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14
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Xu W, Deng M, Meng X, Sun X, Tao X, Wang D, Zhang S, Zhen Y, Liu X, Liu M. The alterations in molecular markers and signaling pathways in chronic thromboembolic pulmonary hypertension, a study with transcriptome sequencing and bioinformatic analysis. Front Cardiovasc Med 2022; 9:961305. [PMID: 35958401 PMCID: PMC9362860 DOI: 10.3389/fcvm.2022.961305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 07/04/2022] [Indexed: 12/05/2022] Open
Abstract
Background At present, the alterations in molecular markers and signaling pathways in chronic thromboembolic pulmonary hypertension (CTEPH) remain unclear. We aimed to compare the difference of molecular markers and signaling pathways in patients with CTEPH and healthy people with transcriptome sequencing and bioinformatic analysis. Methods We prospectively included 26 patients with CTEPH and 35 sex- and age-matched healthy volunteers as control. We extracted RNA from whole blood samples to construct the library. Then, qualified libraries were sequenced using PE100 strategy on BGIseq platform. Subsequently, the DESeq2 package in R was used to screen differentially expressed mRNAs (DEmRNAs) and differentially expressed long non-coding RNAs (DElncRNAs) of 7 patients with CTEPH and 5 healthy volunteers. Afterwards, we performed functional enrichment and protein–protein interaction analysis of DEmRNAs. We also performed lncRNA-mRNA co-expression analysis and lncRNA-miRNA-mRNA network construction. In addition, we performed diagnostic analysis on the GSE130391 dataset. Finally, we performed reverse transcription polymerase chain reaction (RT-PCR) of genes in 19 patients with CTEPH and 30 healthy volunteers. Results Gender and age between patients with CTEPH and healthy controls, between sequencing group and in vitro validation group, were comparable. A total of 437 DEmRNAs and 192 DElncRNAs were obtained. Subsequently, 205 pairs of interacting DEmRNAs and 232 pairs of lncRNA-mRNA relationship were obtained. DEmRNAs were significantly enriched in chemokine signaling pathway, metabolic pathways, arachidonic acid metabolism, and MAPK signaling pathway. Only one regulation pathway of SOBP-hsa-miR-320b-LINC00472 was found through ceRNA network construction. In diagnostic analysis, the area under curve (AUC) values of LINC00472, PIK3R6, SCN3A, and TCL6, respectively, were 0.964, 0.893, 0.750, and 0.732. Conclusion The identification of alterations in molecules and pathways may provide further research directions on pathogenesis of CTEPH. Additionally, LINC00472, PIK3R6, SCN3A, and TCL6 may act as the potential gene markers in CTEPH.
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Affiliation(s)
- Wenqing Xu
- Department of Radiology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China
| | - Mei Deng
- Department of Radiology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiapei Meng
- Department of Radiology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China
| | - Xuebiao Sun
- Department of Radiology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China
| | - Xincao Tao
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Dingyi Wang
- Institute of Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Shuai Zhang
- Department of Pulmonary and Critical Care Medicine, China-Japan Friendship Hospital, Beijing, China
| | - Yanan Zhen
- Department of Cardiovascular Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Xiaopeng Liu
- Department of Cardiovascular Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Min Liu
- Department of Radiology, China-Japan Friendship Hospital, Beijing, China
- *Correspondence: Min Liu
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15
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Chen YC, Chang YP, Huang KT, Hsu PY, Hsiao CC, Lin MC. Unraveling the Pathogenesis of Asthma and Chronic Obstructive Pulmonary Disease Overlap: Focusing on Epigenetic Mechanisms. Cells 2022; 11:cells11111728. [PMID: 35681424 PMCID: PMC9179497 DOI: 10.3390/cells11111728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/05/2022] [Accepted: 05/21/2022] [Indexed: 12/10/2022] Open
Abstract
Asthma and COPD overlap (ACO) is characterized by patients presenting with persistent airflow limitation and features of both asthma and COPD. It is associated with a higher frequency and severity of exacerbations, a faster lung function decline, and a higher healthcare cost. Systemic inflammation in COPD and asthma is driven by type 1 T helper (Th1) and Th2 immune responses, respectively, both of which may contribute to airway remodeling in ACO. ACO-related biomarkers can be classified into four categories: neutrophil-mediated inflammation, Th2 cell responses, arachidonic acid-eicosanoids pathway, and metabolites. Gene–environment interactions are key contributors to the complexity of ACO and are regulated by epigenetic mechanisms, including DNA methylation, histone modifications, and non-coding RNAs. Thus, this review focuses on the link between epigenetics and ACO, and outlines the following: (I) inheriting epigenotypes without change with environmental stimuli, or epigenetic changes in response to long-term exposure to inhaled particles plus intermittent exposure to specific allergens; (II) epigenetic markers distinguishing ACO from COPD and asthma; (III) potential epigenetic drugs that can reverse oxidative stress, glucocorticoid insensitivity, and cell injury. Improved understanding of the epigenetic regulations holds great value to give deeper insight into the mechanisms, and clarify their implications for biomedical research in ACO.
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Affiliation(s)
- Yung-Che Chen
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (Y.-P.C.); (K.-T.H.); (P.-Y.H.)
- Department of Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Correspondence: (Y.-C.C.); (C.-C.H.); (M.-C.L.); Tel.: +886-7-731-7123 (ext. 8199) (Y.-C.C. & M.-C.L.); +886-7-731-7123 (ext. 8979) (C.-C.H.)
| | - Yu-Ping Chang
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (Y.-P.C.); (K.-T.H.); (P.-Y.H.)
| | - Kuo-Tung Huang
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (Y.-P.C.); (K.-T.H.); (P.-Y.H.)
| | - Po-Yuan Hsu
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (Y.-P.C.); (K.-T.H.); (P.-Y.H.)
| | - Chang-Chun Hsiao
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (Y.-P.C.); (K.-T.H.); (P.-Y.H.)
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Correspondence: (Y.-C.C.); (C.-C.H.); (M.-C.L.); Tel.: +886-7-731-7123 (ext. 8199) (Y.-C.C. & M.-C.L.); +886-7-731-7123 (ext. 8979) (C.-C.H.)
| | - Meng-Chih Lin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung 83301, Taiwan; (Y.-P.C.); (K.-T.H.); (P.-Y.H.)
- Correspondence: (Y.-C.C.); (C.-C.H.); (M.-C.L.); Tel.: +886-7-731-7123 (ext. 8199) (Y.-C.C. & M.-C.L.); +886-7-731-7123 (ext. 8979) (C.-C.H.)
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16
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John C, Guyatt AL, Shrine N, Packer R, Olafsdottir TA, Liu J, Hayden LP, Chu SH, Koskela JT, Luan J, Li X, Terzikhan N, Xu H, Bartz TM, Petersen H, Leng S, Belinsky SA, Cepelis A, Hernández Cordero AI, Obeidat M, Thorleifsson G, Meyers DA, Bleecker ER, Sakoda LC, Iribarren C, Tesfaigzi Y, Gharib SA, Dupuis J, Brusselle G, Lahousse L, Ortega VE, Jonsdottir I, Sin DD, Bossé Y, van den Berge M, Nickle D, Quint JK, Sayers I, Hall IP, Langenberg C, Ripatti S, Laitinen T, Wu AC, Lasky-Su J, Bakke P, Gulsvik A, Hersh CP, Hayward C, Langhammer A, Brumpton B, Stefansson K, Cho MH, Wain LV, Tobin MD. Genetic Associations and Architecture of Asthma-COPD Overlap. Chest 2022; 161:1155-1166. [PMID: 35104449 PMCID: PMC9131047 DOI: 10.1016/j.chest.2021.12.674] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 11/17/2021] [Accepted: 12/21/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Some people have characteristics of both asthma and COPD (asthma-COPD overlap), and evidence suggests they experience worse outcomes than those with either condition alone. RESEARCH QUESTION What is the genetic architecture of asthma-COPD overlap, and do the determinants of risk for asthma-COPD overlap differ from those for COPD or asthma? STUDY DESIGN AND METHODS We conducted a genome-wide association study in 8,068 asthma-COPD overlap case subjects and 40,360 control subjects without asthma or COPD of European ancestry in UK Biobank (stage 1). We followed up promising signals (P < 5 × 10-6) that remained associated in analyses comparing (1) asthma-COPD overlap vs asthma-only control subjects, and (2) asthma-COPD overlap vs COPD-only control subjects. These variants were analyzed in 12 independent cohorts (stage 2). RESULTS We selected 31 independent variants for further investigation in stage 2, and discovered eight novel signals (P < 5 × 10-8) for asthma-COPD overlap (meta-analysis of stage 1 and 2 studies). These signals suggest a spectrum of shared genetic influences, some predominantly influencing asthma (FAM105A, GLB1, PHB, TSLP), others predominantly influencing fixed airflow obstruction (IL17RD, C5orf56, HLA-DQB1). One intergenic signal on chromosome 5 had not been previously associated with asthma, COPD, or lung function. Subgroup analyses suggested that associations at these eight signals were not driven by smoking or age at asthma diagnosis, and in phenome-wide scans, eosinophil counts, atopy, and asthma traits were prominent. INTERPRETATION We identified eight signals for asthma-COPD overlap, which may represent loci that predispose to type 2 inflammation, and serious long-term consequences of asthma.
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Affiliation(s)
- Catherine John
- Department of Health Sciences, University of Leicester, Leicester, England.
| | - Anna L Guyatt
- Department of Health Sciences, University of Leicester, Leicester, England
| | - Nick Shrine
- Department of Health Sciences, University of Leicester, Leicester, England
| | - Richard Packer
- Department of Health Sciences, University of Leicester, Leicester, England
| | | | - Jiangyuan Liu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Lystra P Hayden
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Su H Chu
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Jukka T Koskela
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland
| | - Jian'an Luan
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge, England
| | - Xingnan Li
- Division of Genetics, Genomics and Precision Medicine, Department of Medicine, University of Arizona, Tucson, AZ
| | - Natalie Terzikhan
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Hanfei Xu
- Department of Biostatistics, Boston University School of Public Health, Boston, MA
| | - Traci M Bartz
- Cardiovascular Health Research Unit, Department of Medicine and Department of Biostatistics, University of Washington, Seattle, WA
| | - Hans Petersen
- Lovelace Respiratory Research Institute, Albuquerque, NM
| | - Shuguang Leng
- Division of Epidemiology, Biostatistics, and Preventive Medicine, Department of Internal Medicine, University of New Mexico, Albuquerque, NM
| | | | - Aivaras Cepelis
- Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Levanger, Norway
| | | | - Ma'en Obeidat
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Gudmar Thorleifsson
- deCODE Genetics/Amgen, Reykjavik, Iceland; Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Deborah A Meyers
- Division of Genetics, Genomics and Precision Medicine, Department of Medicine, University of Arizona, Tucson, AZ
| | - Eugene R Bleecker
- Division of Genetics, Genomics and Precision Medicine, Department of Medicine, University of Arizona, Tucson, AZ
| | - Lori C Sakoda
- Division of Research, Kaiser Permanente of Northern California, Oakland, CA
| | - Carlos Iribarren
- Division of Research, Kaiser Permanente of Northern California, Oakland, CA
| | | | - Sina A Gharib
- Computational Medicine Core, Center for Lung Biology and UW Medicine Sleep Center, Medicine, University of Washington, Seattle, WA
| | - Josée Dupuis
- Cardiovascular Health Research Unit, Department of Medicine and Department of Biostatistics, University of Washington, Seattle, WA
| | - Guy Brusselle
- Department of Biostatistics, Boston University School of Public Health, Boston, MA; Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium
| | - Lies Lahousse
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands; Department of Bioanalysis, Ghent University, Ghent, Belgium
| | - Victor E Ortega
- Department of Medicine, Wake Forest School of Medicine, Winston-Salem, NC
| | - Ingileif Jonsdottir
- deCODE Genetics/Amgen, Reykjavik, Iceland; Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Don D Sin
- Centre for Heart Lung Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Yohan Bossé
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, Quebec, QC, Canada
| | - Maarten van den Berge
- Department of Pulmonology, University Medical Center Groningen, University of Groningen, and GRIAC Research Institute, Groningen, the Netherlands
| | - David Nickle
- Global Health, University of Washington, Seattle, WA; Gossamer Bio, San Diego, CA
| | - Jennifer K Quint
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Ian Sayers
- Division of Respiratory Medicine and NIHR Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, England; Biodiscovery Institute, University of Nottingham, Nottingham, England
| | - Ian P Hall
- Division of Respiratory Medicine and NIHR Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, England
| | - Claudia Langenberg
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge, England
| | - Samuli Ripatti
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland; Broad Institute of MIT and Harvard, Cambridge, MA
| | - Tarja Laitinen
- Division of Medicine, Department of Pulmonary Diseases, Turku University Hospital, Turku, Finland; Department of Pulmonary Diseases and Clinical Allergology, University of Turku, Turku, Finland
| | - Ann C Wu
- Center for Healthcare Research in Pediatrics (CHeRP) and PRecisiOn Medicine Translational Research (PROMoTeR) Center, Department of Population Medicine, Harvard Pilgrim Health Care Institute and Harvard Medical School, Boston, MA
| | - Jessica Lasky-Su
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Per Bakke
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Amund Gulsvik
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Craig P Hersh
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Caroline Hayward
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, Scotland
| | - Arnulf Langhammer
- Department of Public Health and Nursing, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Levanger, Norway
| | - Ben Brumpton
- K. G. Jebsen Center for Genetic Epidemiology, Department of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Clinic of Thoracic and Occupational Medicine, St. Olav's Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Kari Stefansson
- deCODE Genetics/Amgen, Reykjavik, Iceland; Faculty of Medicine, School of Health Sciences, University of Iceland, Reykjavik, Iceland
| | - Michael H Cho
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA
| | - Louise V Wain
- Department of Health Sciences, University of Leicester, Leicester, England; Leicester NIHR Biomedical Research Centre, Leicester, England
| | - Martin D Tobin
- Department of Health Sciences, University of Leicester, Leicester, England; Leicester NIHR Biomedical Research Centre, Leicester, England
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17
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Jo YS, Hwang YI, Yoo KH, Lee MG, Jung KS, Shin KC, Yoon HK, Kim DK, Lee SY, Rhee CK. Racial Differences in Prevalence and Clinical Characteristics of Asthma-Chronic Obstructive Pulmonary Disease Overlap. Front Med (Lausanne) 2021; 8:780438. [PMID: 34881272 PMCID: PMC8645561 DOI: 10.3389/fmed.2021.780438] [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: 09/21/2021] [Accepted: 10/20/2021] [Indexed: 11/17/2022] Open
Abstract
Background: This study examined the differences in the prevalence and clinical features of asthma–chronic obstructive pulmonary disease (COPD) overlap (ACO) with identical diagnostic criteria by race and ethnicity in two nationwide cohorts of COPD. Methods: We used data from the Korean COPD Subgroup Study (KOCOSS) and phase I of the US Genetic Epidemiology of COPD (COPDGene) study. We defined ACO by satisfying bronchodilator response (BDR) >15% and 400 ml and/or blood eosinophil count ≥300/μl. Results: The prevalences of ACO according to ethnicity were non-Hispanic white (NHW), 21.4%; African American (AA), 17.4%; and Asian, 23.8%. Asian patients with ACO were older, predominantly male, with fewer symptoms, more severe airflow limitation, and fewer comorbidities than NHW and AA patients. During 1-year follow-up, exacerbations occurred in 28.2, 22.0, and 48.4% of NHW, AA, and Asian patients with ACO, respectively. Compared to patients with non-ACO from the same racial group, the risk for exacerbation was significantly higher in NHW and Asian patients with ACO [adjusted incident rate ratio (aIRR), 1.17; 95% CI, 1.01–1.36, and aIRR, 1.37; 95% CI, 1.09–1.71 for NHW and Asian patients with ACO, respectively]. Inhaled corticosteroid (ICS) reduced the risk for future exacerbation in total patients with ACO but the effect was not significant in each racial group. Conclusions: The prevalence of ACO was similar in the two cohorts using the same diagnostic criteria. The risk for future exacerbation was significantly higher in ACO, and the use of ICS reduced the risk for exacerbation in total patients with ACO.
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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, South Korea
| | - Yong Il Hwang
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, South Korea
| | - Kwang Ha Yoo
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Konkuk University School of Medicine, Seoul, South Korea
| | - Myung Goo Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, South Korea
| | - Ki Suck Jung
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, South Korea
| | - Kyeong-Cheol Shin
- Regional Center for Respiratory Disease, Yeungnam University Medical Center, Yeungnam University College of Medicine, Daegu, South Korea
| | - Hyoung Kyu Yoon
- Division 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
| | - Deog Kyeom Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, South Korea
| | - Sang Yeub Lee
- Division of Pulmonary and Allergy Medicine, Department of Internal Medicine, Korea University Anam Hospital, Korea University, Seoul, South Korea
| | - Chin Kook Rhee
- Division 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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18
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Bacharier LB, Maspero JF, Katelaris CH, Fiocchi AG, Gagnon R, de Mir I, Jain N, Sher LD, Mao X, Liu D, Zhang Y, Khan AH, Kapoor U, Khokhar FA, Rowe PJ, Deniz Y, Ruddy M, Laws E, Patel N, Weinreich DM, Yancopoulos GD, Amin N, Mannent LP, Lederer DJ, Hardin M. Dupilumab in Children with Uncontrolled Moderate-to-Severe Asthma. N Engl J Med 2021; 385:2230-2240. [PMID: 34879449 DOI: 10.1056/nejmoa2106567] [Citation(s) in RCA: 120] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Children with moderate-to-severe asthma continue to have disease complications despite the receipt of standard-of-care therapy. The monoclonal antibody dupilumab has been approved for the treatment of adults and adolescents with asthma as well as with other type 2 inflammatory diseases. METHODS In this 52-week phase 3, randomized, double-blind, placebo-controlled trial, we assigned 408 children between the ages of 6 and 11 years who had uncontrolled moderate-to-severe asthma to receive a subcutaneous injection of dupilumab (at a dose of 100 mg for those weighing ≤30 kg and 200 mg for those weighing >30 kg) or matched placebo every 2 weeks. All the children continued to receive a stable dose of standard background therapy. The primary end point was the annualized rate of severe asthma exacerbations. Secondary end points included the change from baseline in the percentage of predicted prebronchodilator forced expiratory volume in 1 second (ppFEV1) at week 12 and in the score on the Asthma Control Questionnaire 7 Interviewer-Administered (ACQ-7-IA) at week 24. End points were evaluated in the two primary efficacy populations who had either a type 2 inflammatory asthma phenotype (≥150 blood eosinophils per cubic millimeter or a fraction of exhaled nitric oxide of ≥20 ppb at baseline) or a blood eosinophil count of at least 300 cells per cubic millimeter at baseline. RESULTS In patients with the type 2 inflammatory phenotype, the annualized rate of severe asthma exacerbations was 0.31 (95% confidence interval [CI], 0.22 to 0.42) with dupilumab and 0.75 (95% CI, 0.54 to 1.03) with placebo (relative risk reduction in the dupilumab group, 59.3%; 95% CI, 39.5 to 72.6; P<0.001). The mean (±SE) change from baseline in the ppFEV1 was 10.5±1.0 percentage points with dupilumab and 5.3±1.4 percentage points with placebo (mean difference, 5.2 percentage points; 95% CI, 2.1 to 8.3; P<0.001). Dupilumab also resulted in significantly better asthma control than placebo (P<0.001). Similar results were observed in the patients with an eosinophil count of at least 300 cells per cubic millimeter at baseline. The incidence of serious adverse events was similar in the two groups. CONCLUSIONS Among children with uncontrolled moderate-to-severe asthma, those who received add-on dupilumab had fewer asthma exacerbations and better lung function and asthma control than those who received placebo. (Funded by Sanofi and Regeneron Pharmaceuticals; Liberty Asthma VOYAGE ClinicalTrials.gov number, NCT02948959.).
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Affiliation(s)
- Leonard B Bacharier
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Jorge F Maspero
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Constance H Katelaris
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Alessandro G Fiocchi
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Remi Gagnon
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Ines de Mir
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Neal Jain
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Lawrence D Sher
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Xuezhou Mao
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Dongfang Liu
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Yi Zhang
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Asif H Khan
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Upender Kapoor
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Faisal A Khokhar
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Paul J Rowe
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Yamo Deniz
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Marcella Ruddy
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Elizabeth Laws
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Naimish Patel
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - David M Weinreich
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - George D Yancopoulos
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Nikhil Amin
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Leda P Mannent
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - David J Lederer
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
| | - Megan Hardin
- From Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville (L.B.B.); Fundación CIDEA, Buenos Aires (J.F.M.); Campbelltown Hospital, Campbelltown, NSW, and Western Sydney University, Sydney (C.H.K.) - both in Australia; Bambino Gesù Children's Hospital IRCCS, Rome (A.G.F.); Clinique Spécialisée en Allergie de la Capitale, Quebec, QC, Canada (R.G.); Hospital Vall d'Hebron, Barcelona (I.M.); Arizona Allergy and Immunology Research, Gilbert (N.J.); Peninsula Research Associates, Rolling Hills Estates, CA (L.D.S.); Sanofi, Bridgewater, NJ (X.M., U.K., P.J.R., E.L.); Sanofi, Beijing (D.L.); Regeneron Pharmaceuticals, Tarrytown, NY (Y.Z., F.A.K., Y.D., M.R., D.M.W., G.D.Y., N.A., D.J.L.); Sanofi, Chilly-Mazarin, France (A.H.K., L.P.M.); and Sanofi Genzyme, Cambridge, MA (N.P., M.H.)
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19
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Duan P, Wang Y, Lin R, Zeng Y, Chen C, Yang L, Yue M, Zhong S, Wang Y, Zhang Q. Impact of early life exposures on COPD in adulthood: A systematic review and meta-analysis. Respirology 2021; 26:1131-1151. [PMID: 34541740 DOI: 10.1111/resp.14144] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 07/16/2021] [Accepted: 08/29/2021] [Indexed: 02/06/2023]
Abstract
Early life represents a critical period for the development and growth of the lungs. Adverse exposures in this stage may drive the development of chronic obstructive pulmonary disease (COPD). Thus, we quantitatively evaluated the impact of different early life exposures on COPD in adulthood. The PubMed, Embase and Cochrane Library electronic databases were searched for articles published from January 2001 to October 2020. A total of 30 studies (795,935 participants) met the criteria and were included in the review. We found a significant association of COPD with childhood serious respiratory infections, pneumonia or bronchitis (pooled adjusted OR [aOR], 2.23 [95% CI, 1.63-3.07]). The probability of COPD was increased 3.45-fold for children with than without asthma (pooled aOR, 3.45 [95% CI, 2.37-5.02]). In addition, the probability of COPD was associated with maternal smoking (pooled aOR, 1.42 [95% CI, 1.17-1.72]), any child maltreatment (pooled aOR, 1.30 [95% CI, 1.18-1.42]) and low birth weight (pooled aOR, 1.58 [95% CI, 1.08-2.32]) but not childhood environmental tobacco smoke exposure (pooled aOR, 1.15 [0.83-1.61]) or premature birth (pooled aOR, 1.17 [95% CI, 0.87-1.58]). Furthermore, subgroup analyses revealed that probability was increased for only women with childhood physical abuse, sexual abuse and exposure to intimate partner violence. Factors resulting in COPD in adults could trace back to early life. Childhood respiratory disease, maltreatment, maternal smoking and low birth weight increase the risk of COPD. Promising advances in prevention strategies for early life exposures could markedly decrease the risk of COPD.
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Affiliation(s)
- Pengfei Duan
- Department of Preventive Medicine, Shantou University Medical College, Shantou, China
- Department of Infectious Disease Prevention and Control, The Zhongshan Second People's Hospital, Zhongshan, China
| | - Yao Wang
- Department of Preventive Medicine, Shantou University Medical College, Shantou, China
| | - Rongqing Lin
- Department of Preventive Medicine, Shantou University Medical College, Shantou, China
| | - Yiming Zeng
- Department of Pulmonary and Critical Care Medicine, Respiratory Medicine Center of Fujian Province, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China
| | - Chengshui Chen
- Respiratory Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Li Yang
- Respiratory Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Minghui Yue
- Department of Preventive Medicine, Shantou University Medical College, Shantou, China
| | - Shan Zhong
- Center for Research and Technology of Precision Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Yun Wang
- Center for Research and Technology of Precision Medicine, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, China
| | - Qingying Zhang
- Department of Preventive Medicine, Shantou University Medical College, Shantou, China
- Guangdong Provincial Key Laboratory for Breast Cancer Diagnosis and Treatment, Cancer Hospital of Shantou University Medical College, Shantou, China
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20
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Odimba U, Senthilselvan A, Farrell J, Gao Z. Current Knowledge of Asthma-COPD Overlap (ACO) Genetic Risk Factors, Characteristics, and Prognosis. COPD 2021; 18:585-595. [PMID: 34555990 DOI: 10.1080/15412555.2021.1980870] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Asthma-COPD overlap (ACO) is a newly identified phenotype of chronic obstructive airway diseases with shared asthma and COPD features. Patients with ACO are poorly defined, and some evidence suggests that they have worse health outcomes and greater disease burden than patients with COPD or asthma. Generally, there is no evidence-based and universal definition for ACO; several consensus documents have provided various descriptions of the phenotype. In addition, the mechanisms underlying the development of ACO are not fully understood. Whether ACO is a distinct clinical entity with its particular discrete genetic determinant different from asthma and COPD alone or an intermediate phenotype with overlapping genetic markers within asthma and COPD spectrum of obstructive airway disease remains unproven. This review summarizes the current knowledge of the genetic risk factors, characteristics, and prognosis of ACO.
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Affiliation(s)
- Ugochukwu Odimba
- Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University, St. John's, Newfoundland and Labrador, Canada
| | | | - Jamie Farrell
- Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University, St. John's, Newfoundland and Labrador, Canada.,Faculty of Medicine, Health Sciences Centre (Respirology Department), Memorial University, St John's, Newfoundland and Labrador, Canada
| | - Zhiwei Gao
- Clinical Epidemiology Unit, Division of Community Health and Humanities, Faculty of Medicine, Memorial University, St. John's, Newfoundland and Labrador, Canada
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21
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Moll M, Jackson VE, Yu B, Grove ML, London SJ, Gharib SA, Bartz TM, Sitlani CM, Dupuis J, O'Connor GT, Xu H, Cassano PA, Patchen BK, Kim WJ, Park J, Kim KH, Han B, Barr RG, Manichaikul A, Nguyen JN, Rich SS, Lahousse L, Terzikhan N, Brusselle G, Sakornsakolpat P, Liu J, Benway CJ, Hall IP, Tobin MD, Wain LV, Silverman EK, Cho MH, Hobbs BD. A systematic analysis of protein-altering exonic variants in chronic obstructive pulmonary disease. Am J Physiol Lung Cell Mol Physiol 2021; 321:L130-L143. [PMID: 33909500 PMCID: PMC8321852 DOI: 10.1152/ajplung.00009.2021] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 04/15/2021] [Accepted: 04/27/2021] [Indexed: 12/14/2022] Open
Abstract
Genome-wide association studies (GWASs) have identified regions associated with chronic obstructive pulmonary disease (COPD). GWASs of other diseases have shown an approximately 10-fold overrepresentation of nonsynonymous variants, despite limited exonic coverage on genotyping arrays. We hypothesized that a large-scale analysis of coding variants could discover novel genetic associations with COPD, including rare variants with large effect sizes. We performed a meta-analysis of exome arrays from 218,399 controls and 33,851 moderate-to-severe COPD cases. All exome-wide significant associations were present in regions previously identified by GWAS. We did not identify any novel rare coding variants with large effect sizes. Within GWAS regions on chromosomes 5q, 6p, and 15q, four coding variants were conditionally significant (P < 0.00015) when adjusting for lead GWAS single-nucleotide polymorphisms A common gasdermin B (GSDMB) splice variant (rs11078928) previously associated with a decreased risk for asthma was nominally associated with a decreased risk for COPD [minor allele frequency (MAF) = 0.46, P = 1.8e-4]. Two stop variants in coiled-coil α-helical rod protein 1 (CCHCR1), a gene involved in regulating cell proliferation, were associated with COPD (both P < 0.0001). The SERPINA1 Z allele was associated with a random-effects odds ratio of 1.43 for COPD (95% confidence interval = 1.17-1.74), though with marked heterogeneity across studies. Overall, COPD-associated exonic variants were identified in genes involved in DNA methylation, cell-matrix interactions, cell proliferation, and cell death. In conclusion, we performed the largest exome array meta-analysis of COPD to date and identified potential functional coding variants. Future studies are needed to identify rarer variants and further define the role of coding variants in COPD pathogenesis.
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Affiliation(s)
- Matthew Moll
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Victoria E Jackson
- Department of Health Sciences, University of Leicester, Leicester, United Kingdom
- Population Health and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria, Australia
| | - Bing Yu
- School of Public Health, University of Texas Health Science Center, Houston, Texas
| | - Megan L Grove
- School of Public Health, University of Texas Health Science Center, Houston, Texas
| | - Stephanie J London
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services Research, Research Triangle Park, Durham, North Carolina
| | - Sina A Gharib
- Center for Lung Biology, Division of Pulmonary and Critical Care Medicine, Department of Medicine, University of Washington, Seattle, Washington
| | - Traci M Bartz
- Department of Biostatistics, University of Washington, Seattle, Washington
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington
| | - Colleen M Sitlani
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, Washington
| | - Josée Dupuis
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts
| | - George T O'Connor
- Division of Pulmonary, Allergy, Sleep, and Critical Care Medicine, Department of Medicine, Pulmonary Center, Boston University School of Medicine, Boston Medical Center, Boston, Massachusetts
| | - Hanfei Xu
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts
| | - Patricia A Cassano
- Division of Nutritional Sciences, Cornell University, Ithaca, New York
- Division of Epidemiology, Department of Population Health Sciences, Weill Cornell Medicine, New York, New York
| | | | - Woo Jin Kim
- Department of Internal Medicine, Kangwon National University, Chuncheon, South Korea
| | - Jinkyeong Park
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
- Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang-Si, Gyeonggi-do, South Korea
| | - Kun Hee Kim
- Department of Convergence Medicine and Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Buhm Han
- Department of Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - R Graham Barr
- Department of Medicine, Columbia University Medical Center, New York, New York
| | - Ani Manichaikul
- Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia
| | - Jennifer N Nguyen
- Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia
| | - Stephen S Rich
- Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia
| | - Lies Lahousse
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Bioanalysis, Ghent University, Ghent, Belgium
| | - Natalie Terzikhan
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Guy Brusselle
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Phuwanat Sakornsakolpat
- Department of Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Jiangyuan Liu
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Christopher J Benway
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
| | - Ian P Hall
- NIHR Nottingham Biomedical Research Centre, Queen's Medical Centre, Nottingham, United Kingdom
| | - Martin D Tobin
- Department of Health Sciences, University of Leicester, Leicester, United Kingdom
- National Institute for Health Research Leicester Respiratory Biomedical Research Centre, Glenfield Hospital, Leicester, United Kingdom
| | - Louise V Wain
- Department of Health Sciences, University of Leicester, Leicester, United Kingdom
- National Institute for Health Research Leicester Respiratory Biomedical Research Centre, Glenfield Hospital, Leicester, United Kingdom
| | - Edwin K Silverman
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
- Harvard Medical School, Boston, Massachusetts
| | - Michael H Cho
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
- Harvard Medical School, Boston, Massachusetts
| | - Brian D Hobbs
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts
- Harvard Medical School, Boston, Massachusetts
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22
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Dong Y, Liu H, Zheng T. Association between Green Space Structure and the Prevalence of Asthma: A Case Study of Toronto. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:5852. [PMID: 34072529 PMCID: PMC8199317 DOI: 10.3390/ijerph18115852] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 12/21/2022]
Abstract
Asthma is a chronic inflammatory disease that can be caused by various factors, such as asthma-related genes, lifestyle, and air pollution, and it can result in adverse impacts on asthmatics' mental health and quality of life. Hence, asthma issues have been widely studied, mainly from demographic, socioeconomic, and genetic perspectives. Although it is becoming increasingly clear that asthma is likely influenced by green spaces, the underlying mechanisms are still unclear and inconsistent. Moreover, green space influences the prevalence of asthma concurrently in multiple ways, but most existing studies have explored only one pathway or a partial pathway, rather than the multi-pathways. Compared to greenness (measured by Normalized Difference Vegetation Index, tree density, etc.), green space structure-which has the potential to impact the concentration of air pollution and microbial diversity-is still less investigated in studies on the influence of green space on asthma. Given this research gap, this research took Toronto, Canada, as a case study to explore the two pathways between green space structure and the prevalence of asthma based on controlling the related covariates. Using regression analysis, it was found that green space structure can protect those aged 0-19 years from a high risk of developing asthma, and this direct protective effect can be enhanced by high tree diversity. For adults, green space structure does not influence the prevalence of asthma unless moderated by tree diversity (a measurement of the richness and diversity of trees). However, this impact was not found in adult females. Moreover, the hypothesis that green space structure influences the prevalence of asthma by reducing air pollution was not confirmed in this study, which can be attributed to a variety of causes.
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Affiliation(s)
- Yuping Dong
- School of Architecture and Urban Planning, Huazhong University of Science and Technology, Wuhan 430074, China; (Y.D.); (T.Z.)
- Center for Urban and Rural Planning Support Research, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Helin Liu
- School of Architecture and Urban Planning, Huazhong University of Science and Technology, Wuhan 430074, China; (Y.D.); (T.Z.)
- Center for Urban and Rural Planning Support Research, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Tianming Zheng
- School of Architecture and Urban Planning, Huazhong University of Science and Technology, Wuhan 430074, China; (Y.D.); (T.Z.)
- Center for Urban and Rural Planning Support Research, Huazhong University of Science and Technology, Wuhan 430074, China
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23
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Abstract
The global COVID-19 pandemic has brought respiratory disease to the forefront of public health, but asthma prevalence has been rising globally for decades. Asthma is mediated by errant immune activation and airway remodeling, but the influences of environment, nutrition, and comorbidities (e.g., asthma-chronic obstructive pulmonary disorder-overlap [ACO]) are still poorly understood. Even as a new generation of biologic-based treatments offer better airway control and reductions in mortality, a lack of prophylactic treatments and mechanistic understanding complicates efforts to prevent pathogenesis. This review will explicate and synthesize current knowledge on the effect of ACO and biologics (omalizumab, mepolizumab, reslizumab, benralizumab, and dupilumab) on pathogenesis, treatment, and prognosis.
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24
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R Arnold N, S Wan E, Hersh CP, Schwartz A, Kinney G, Young K, Hokanson J, Regan EA, P Comellas A, Fortis S. Inhaled Medication Use in Smokers With Normal Spirometry. Respir Care 2021; 66:652-660. [PMID: 33563793 PMCID: PMC9993991 DOI: 10.4187/respcare.08016] [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: 11/05/2022]
Abstract
BACKGROUND The objective of our study was to identify variables associated with inhaled medication use in smokers with normal spirometry (GOLD-0) and to examine the association of inhaled medication use with development of exacerbations and obstructive spirometry in the future. METHODS We performed a retrospective multivariable analysis of GOLD-0 subjects identified in data from the COPDGene study to examine factors associated with medication use. Five categories were identified: (1) no medications, (2) short-acting bronchodilator, (3) long-acting bronchodilator; long-acting muscarinic antagonists and/or long-acting β agonist, (4) inhaled corticosteroids (ICS) with or without long-acting bronchodilator, and (5) dual bronchodilator with ICS. Sensitivity analysis was performed excluding subjects with history of asthma. We also evaluated whether long-acting inhaled medication use was associated with exacerbations and obstructive spirometry at the follow-up visit 5 y after enrollment. RESULTS Of 4,303 GOLD-0 subjects within the analysis, 541 of them (12.6%) received inhaled medications. Of these, 259 (6%) were using long-acting inhaled medications and 282 (6.6%) were taking short-acting bronchodilator. Female sex (odds ratio [OR] 1.47, P = .003), numerous medical comorbidities, radiographic emphysema (OR 2.22, P = .02), chronic bronchitis (OR 1.77, P < .001), dyspnea (OR 2.24, P < .001), asthma history (OR 15.56, P < .001), prior exacerbation (OR 8.45, P < .001), and 6-min walk distance (OR 0.9, P < .001) were associated with medication use. Minimal changes were noted in a sensitivity analysis. Additionally, inhaled medications were associated with increased total (incidence rate ratio 2.83, P < .001) and severe respiratory exacerbations (incidence rate ratio 3.64, P < .001) and presence of obstructive spirometry (OR 2.83, P = .002) at follow-up. CONCLUSIONS Respiratory symptoms, history of asthma, and radiographic emphysema were associated with inhaled medication use in smokers with normal spirometry. These individuals were more likely to develop obstructive spirometry, which suggests that health care providers may be able to identify obstructive lung disease prior to meeting the current criteria for COPD.
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Affiliation(s)
- Nicholas R Arnold
- Department of Internal Medicine, Division of General Internal Medicine, University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Emily S Wan
- Channing Laboratory and Pulmonary and Critical Care Division, Brigham and Women's Hospital, Boston, Massachusetts.,Jamaica Plain Campus, VA Boston Health Care System, Boston, Massachusetts
| | - Craig P Hersh
- Channing Laboratory and Pulmonary and Critical Care Division, Brigham and Women's Hospital, Boston, Massachusetts
| | - Andrei Schwartz
- Department of Internal Medicine, Division of General Internal Medicine, University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa
| | - Greg Kinney
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
| | - Kendra Young
- Department of Biostatistics and Informatics, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
| | - John Hokanson
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
| | - Elizabeth A Regan
- Department of Epidemiology, Colorado School of Public Health, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado.,Department of Medicine, Division of Rheumatology, National Jewish Health, Denver, Colorado
| | - Alejandro P Comellas
- Division of Pulmonary, Critical Care and Occupational Medicine, University of Iowa Hospital and Clinics, Iowa City, Iowa
| | - Spyridon Fortis
- Division of Pulmonary, Critical Care and Occupational Medicine, University of Iowa Hospital and Clinics, Iowa City, Iowa. .,Center for Access & Delivery Research & Evaluation (CADRE), Iowa City VA Health Care System, Iowa City, Iowa
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25
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Lee S, Lasky-Su JA, Lange C, Kim W, Kumar PL, McDonald MLN, Vaz Fragoso CA, Laurie C, Raby BA, Celedón JC, Cho MH, Won S, Weiss ST, Hecker J. A novel locus for exertional dyspnoea in childhood asthma. Eur Respir J 2021; 57:2001224. [PMID: 32855217 PMCID: PMC8185954 DOI: 10.1183/13993003.01224-2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/31/2020] [Indexed: 12/18/2022]
Abstract
Most children diagnosed with asthma have respiratory symptoms such as cough, dyspnoea and wheezing, which are also important markers of overall respiratory function. A decade of genome-wide association studies (GWAS) have investigated genetic susceptibility to asthma itself, but few have focused on important respiratory symptoms that characterise childhood asthma.Using whole-genome sequencing (WGS) data for 894 asthmatic trios from a Costa Rican cohort, we performed family-based association tests (FBATs) to assess the association between genetic variants and multiple asthma-relevant respiratory phenotypes: cough, phlegm, wheezing, exertional dyspnoea and exertional chest tightness. We tested whether genome-wide significant associations were replicated in two additional studies: 1) 286 asthmatic trios from the Childhood Asthma Management Program (CAMP), and 2) 2691 African American current or former smokers from the COPDGene study.In the 894 Costa Rican trios, we identified a genome-wide significant association (p=2.16×10-9) between exertional dyspnoea and the single nucleotide polymorphism (SNP) rs10165869, located on chromosome 2q37.3, that was replicated in the CAMP cohort (p=0.023) with the same direction of association (combined p=3.28×10-10). This association was not found in the African American participants from COPDGene. We also found suggestive evidence for an association between SNP rs10165869 and the atypical chemokine receptor 3 (ACKR3).Our finding encourages the secondary association analysis of a wider range of phenotypes that characterise respiratory symptoms in other airway diseases/studies.
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Affiliation(s)
- Sanghun Lee
- Dept of Medical Consilience, Division of Medicine, Graduate
School, Dankook University, Yongin, South Korea
- Dept of Biostatistics, Harvard T.H. Chan School of Public
Health, Boston, MA, USA
| | - Jessica Ann Lasky-Su
- Channing Division of Network Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Christoph Lange
- Dept of Biostatistics, Harvard T.H. Chan School of Public
Health, Boston, MA, USA
- Channing Division of Network Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Wonji Kim
- Channing Division of Network Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Preeti Lakshman Kumar
- Division of Pulmonary, Allergy and Critical Care Medicine,
University of Alabama at Birmingham, Birmingham, AL, USA
| | - Merry-Lynn N. McDonald
- Division of Pulmonary, Allergy and Critical Care Medicine,
University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Cecelia Laurie
- Dept of Biostatistics, University of Washington, Seattle,
WA, USA
| | - Benjamin A. Raby
- Channing Division of Network Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Juan C. Celedón
- Division of Pediatric Pulmonary Medicine, UPMC
Children’s Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA,
USA
| | - Michael H. Cho
- Channing Division of Network Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Sungho Won
- Dept of Public Health Science, Seoul National University,
Seoul, South Korea
| | - Scott T. Weiss
- Channing Division of Network Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
| | - Julian Hecker
- Channing Division of Network Medicine, Brigham and
Women’s Hospital, Boston, MA, USA
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Park HY, Lee H, Kang D, Choi HS, Ryu YH, Jung KS, Sin DD, Cho J, Yoo KH. Understanding racial differences of COPD patients with an ecological model: two large cohort studies in the US and Korea. Ther Adv Chronic Dis 2021; 12:2040622320982455. [PMID: 33613934 PMCID: PMC7841674 DOI: 10.1177/2040622320982455] [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: 08/06/2020] [Accepted: 12/01/2020] [Indexed: 11/17/2022] Open
Abstract
Background There are limited data about the racial difference in the characteristics of chronic obstructive pulmonary disease (COPD) patients who are treated at clinics. We aimed to compare sociodemographic and clinical characteristics between US and Korean COPD patients using large-scale nationwide COPD cohorts. Methods We used the baseline demographic and clinical data of COPD patients aged 45 years or older with at least a 10 pack-per year smoking history from the Korean COPD Subtype Study (KOCOSS, n = 1686) cohort (2012-2018) and phase I (2008-2011) of the US Genetic Epidemiology of COPD (COPDGene) study (n = 4477, 3461 were non-Hispanic whites [NHW], and 1016 were African Americans [AA]). Results Compared to NHW, AA had a significantly lower adjusted prevalence ratio (aPR) of cough >3 months (aPR: 0.67; 95% CI [confidence interval]: 0.60-0.75) and phlegm >3 months (aPR: 0.78, 95% CI: 0.70-0.86), but higher aPR of dyspnea (modified Medical Round Council scale ⩾2) (aPR: 1.22; 95% CI: 1.15-1.29), short six-minute walk distance (<350 m) (aPR: 1.98; 95% CI: 1.81-2.14), and poor quality of life (aPR: 1.10; 95% CI: 1.05-1.15). Compared to NHW, Koreans had a significantly lower aPR of cough >3 months (aPR: 0.53; 95% CI: 0.47-0.59), phlegm >3 months (aPR: 0.75; 95% CI: 0.67-0.82), dyspnea (aPR: 0.72; 95% CI: 0.66-0.79), and moderate-to-severe acute exacerbation in the previous year (aPR: 0.73; 95% CI: 0.65-0.82). NHW had the highest burden related to chronic bronchitis symptoms and cardiovascular diseases related to comorbidities. Conclusion There are substantial differences in sociodemographic characteristics, clinical presentation, and comorbidities between COPD patients from the KOCOSS and COPDGene, which might be caused by interactions between various intrapersonal, interpersonal, and environmental factors of the ecological model. Thus, a broader and more comprehensive approach would be necessary to understand the racial differences of COPD patients.
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Affiliation(s)
- Hye Yun Park
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hyun Lee
- Division of Pulmonary Medicine and Allergy, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, South Korea
| | - Danbee Kang
- Center for Clinical Epidemiology, Samsung Medical Center, Seoul, Republic of Korea Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Hye Sook Choi
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Kyung Hee University Hospital, Seoul, South Korea
| | - Yeong Ha Ryu
- Division of Pulmonary, Department of Internal Medicine, Dongkang Hospital, Ulsan, South Korea
| | - Ki-Suck Jung
- Department of Pulmonary, Allergy and Critical Care Medicine, Hallym University Sacred Heart Hospital, Anyang, South Korea
| | - Don D Sin
- Respiratory Division, Department of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Juhee Cho
- Department of Clinical Research Design & Evaluation, SAIHST, Sungkyunkwan University, 81 Irwon-ro, Gangnam-gu, Seoul 06351, South Korea Center for Clinical Epidemiology, Samsung Medical Center, Seoul, Republic of Korea Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Kwang Ha Yoo
- Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, 120-1 Neungdong-ro, Gwangjin-gu, Seoul 05030, South Korea
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Ali KM. Childhood asthma as a risk factor for adult chronic obstructive pulmonary disease: a systematic review and meta-analysis. Expert Rev Respir Med 2020; 16:461-467. [PMID: 33317352 DOI: 10.1080/17476348.2021.1864328] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Background: Due to the disagreement in studies, the present study performed a systematic review and meta-analysis to investigate the relationship between childhood asthma and the development of chronic obstructive pulmonary disease (COPD) in adulthood.Methods: Literature search was performed in Medline and Embase databases until the end of 2019. Data were recorded as adjusted odds ratio (OR) and 95% confidence interval (95%CI). Analyses were performed on STATA 14.0 and an overall OR was reported. Subgroup analysis was performed to determine the source of heterogeneity.Results: Data from 11 articles were included in the meta-analysis. Overall, the odds of developing adulthood COPD in children with asthma were 3.0 times higher than that in non-asthmatic children (OR = 3.00; 95%CI: 2.25-4.00; p < 0.001). The relationship between childhood asthma and COPD in adulthood was reported somewhat greater in random sampling method studies than consecutive sampling method studies (OR = 2.89; 95% CI: 1.72-4.86; p = 0.001).Conclusion: Asthma in childhood could be considered as an independent risk factor for COPD in adulthood. Since type of study, sampling method, sample size of study and COPD prevalence are the main sources of heterogeneity, further prospective high-quality studies assessing the relationship of childhood asthma and adulthood COPD are recommended to be performed.
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Lang JE, Tang M, Zhao C, Hurst J, Wu A, Goldstein BA. Well-Child Care Attendance and Risk of Asthma Exacerbations. Pediatrics 2020; 146:peds.2020-1023. [PMID: 33229468 PMCID: PMC7706112 DOI: 10.1542/peds.2020-1023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/02/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Asthma remains a leading cause of hospitalization in US children. Well-child care (WCC) visits are routinely recommended, but how WCC adherence relates to asthma outcomes is poorly described. METHODS We conducted a retrospective longitudinal cohort study using electronic health records among 5 to 17 year old children residing in Durham County with confirmed asthma and receiving primary care within a single health system, to compare the association between asthma exacerbations and previous WCC exposure. Exacerbations included any International Classification of Diseases, Ninth Revision, or International Classification of Diseases, 10th Revision, coded asthma exacerbation encounter with an accompanying systemic glucocorticoid prescription. Exacerbations were grouped by severity: ambulatory encounter only, urgent care, emergency department, hospital encounters <24 hours, and hospital admissions ≥24 hours. In the primary analysis, we assessed time to asthma exacerbation based on the presence or absence of a WCC visit in the preceding year using a time-varying covariate Cox model. RESULTS A total of 5656 children met eligibility criteria and were included in the primary analysis. Patients with the highest WCC visit attendance tended to be younger, had a higher prevalence of private insurance, had greater asthma medication usage, and were less likely to be obese. The presence of a WCC visit in the previous 12 months was associated with a reduced risk of all-cause exacerbations (hazard ratio: 0.90; 95% confidence interval: 0.83-0.98) and severe exacerbations requiring hospital admission (hazard ratio: 0.53; 95% confidence interval: 0.39-0.71). CONCLUSIONS WCC visits were associated with a lower risk of subsequent severe exacerbations, including asthma-related emergency department visits and hospitalizations. Poor WCC visit adherence predicts pediatric asthma morbidity, especially exacerbations requiring hospitalization.
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Affiliation(s)
- Jason E. Lang
- Children’s Health & Discovery Initiative, Departments of Pediatrics and,Duke Clinical Research Institute, Duke University, Durham, North Carolina; and
| | - Monica Tang
- Department of Medicine, School of Medicine, University of California, San Francisco, San Francisco, California
| | - Congwen Zhao
- Children’s Health & Discovery Initiative, Departments of Pediatrics and,Biostatistics and Bioinformatics, School of Medicine and
| | - Jillian Hurst
- Children’s Health & Discovery Initiative, Departments of Pediatrics and
| | - Angie Wu
- Duke Clinical Research Institute, Duke University, Durham, North Carolina; and
| | - Benjamin A. Goldstein
- Children’s Health & Discovery Initiative, Departments of Pediatrics and,Biostatistics and Bioinformatics, School of Medicine and,Duke Clinical Research Institute, Duke University, Durham, North Carolina; and
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Genomic instability in chronic obstructive pulmonary disease and lung cancer: A systematic review and meta-analysis of studies using the micronucleus assay. MUTATION RESEARCH-REVIEWS IN MUTATION RESEARCH 2020; 787:108344. [PMID: 34083053 DOI: 10.1016/j.mrrev.2020.108344] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 12/22/2022]
Abstract
Respiratory tissues are highly susceptible to diseases due to the constant exposure to physical and chemical airborne pollutants. Chronic obstructive pulmonary disease (COPD) and lung cancer are among the most common causes of serious illness and death worldwide. The inflammatory environment associated with these respiratory diseases has long been accepted as the major player in the development of airway abnormalities. The presence and relevance of DNA damage and genomic instability makes the micronucleus assay a suitable candidate to quantitatively estimate these early pathogenetic events. A systematic review and meta-analysis were planned to determine underlying common mechanisms that can explain the relationships between COPD and lung cancer. A total of 17 studies from Jan 1999 to Dec 2019 comparing micronucleus frequency in patients affected by respiratory diseases vs healthy controls were analysed. Our results confirmed the presence of significant association between MN frequency and the diseases investigated, and suggested a circle of events linking inflammation induced oxidative stress to the risk of disease through genomic instability and hypoxia. Therefore, using non-invasive, robust and cost effective genomic instability assays such as the micronucleus assay, would allow us to capture unique phenotypic and biological changes that would allow the identification of subjects at high risk of developing lung diseases and improve early detection strategies.
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Abstract
PURPOSE OF REVIEW Asthma and chronic obstructive pulmonary disease are both commonly encountered respiratory conditions. The term asthma--COPD overlap (ACO) has been used to identify patients presenting with features of both conditions. Controversy exists regarding its definition, approach to diagnosis and management. In this publication, recent evidence has been reviewed that provides insight into diagnosis and management of this condition. RECENT FINDINGS Previously, multiple criteria were used to define Asthma--COPD overlap. In this publication, the most recent guidelines to identify this condition have been reviewed. This publication provides a summary of the recent evidence with regard to the role of various diagnostic modalities including the use of biomarkers, such as exhaled nitric oxide, serum IgE and provides updated evidence on available treatment choices for this condition. SUMMARY ACO is a commonly encountered clinical condition with patients experiencing frequent exacerbations and resulting in increased healthcare resource utilization. Recent interest in ACO has led to development of a framework towards diagnosis and management of this condition. Therapeutic choices for ACO range from bronchodilator therapy to immunomodulatory therapy, highlighting the heterogeneity of this condition. Additional research is required to improve understanding of pathogenesis and improve outcomes in ACO.
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Després F, Ducharme FM, Forget A, Tse SM, Kettani FZ, Blais L. Development and validation of a Pharmacoepidemiologic Pediatric Asthma Control Index (PPACI) using administrative data. CANADIAN JOURNAL OF RESPIRATORY CRITICAL CARE AND SLEEP MEDICINE 2020. [DOI: 10.1080/24745332.2020.1727789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- François Després
- Faculty of Pharmacy, Université de Montréal, Montreal, Québec, Canada
| | - Francine M. Ducharme
- Research Center, Sainte-Justine University Health Centre, Montreal, Québec, Canada
- Department of Pediatrics, Université de Montréal, Montreal, Québec, Canada
- Department of Social and Preventive Medecine, Université de Montréal, Montreal, Québec, Canada
| | - Amélie Forget
- Faculty of Pharmacy, Université de Montréal, Montreal, Québec, Canada
- Department of Social and Preventive Medecine, Université de Montréal, Montreal, Québec, Canada
| | - Sze Man Tse
- Research Center, Sainte-Justine University Health Centre, Montreal, Québec, Canada
| | - Fatima-Zohra Kettani
- Faculty of Pharmacy, Université de Montréal, Montreal, Québec, Canada
- Department of Social and Preventive Medecine, Université de Montréal, Montreal, Québec, Canada
| | - Lucie Blais
- Faculty of Pharmacy, Université de Montréal, Montreal, Québec, Canada
- Research Center, Hôpital du Sacré-Coeur de Montréal, Montreal, Québec, Canada
- Endowment Pharmaceutical Chair AstraZeneca in Respiratory Health, Montreal, Québec, Canada
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32
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Trivedi M, Denton E. Asthma in Children and Adults-What Are the Differences and What Can They Tell us About Asthma? Front Pediatr 2019; 7:256. [PMID: 31294006 PMCID: PMC6603154 DOI: 10.3389/fped.2019.00256] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 06/06/2019] [Indexed: 12/30/2022] Open
Abstract
Asthma varies considerably across the life course. Childhood asthma is known for its overall high prevalence with a male predominance prior to puberty, common remission, and rare mortality. Adult asthma is known for its female predominance, uncommon remission, and unusual mortality. Both childhood and adult asthma have variable presentations, which are described herein. Childhood asthma severity is associated with duration of asthma symptoms, medication use, lung function, low socioeconomic status, racial/ethnic minorities, and a neutrophilic phenotype. Adult asthma severity is associated with increased IgE, elevated FeNO, eosinophilia, obesity, smoking, and low socioeconomic status. Adult onset disease is associated with more respiratory symptoms and asthma medication use despite higher prebronchodilator FEV1/FVC. There is less quiescent disease in adult onset asthma and it appears to be less stable than childhood-onset disease with more relapses and less remissions.
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Affiliation(s)
- Michelle Trivedi
- Division of Pediatric Pulmonology, Department of Pediatrics, University of Massachusetts Medical School, Worcester, MA, United States
- Department of Population and Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States
| | - Eve Denton
- Department of Respiratory Medicine, Alfred Hospital, Melbourne, VIC, Australia
- Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
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33
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Huang X, Mu X, Deng L, Fu A, Pu E, Tang T, Kong X. The etiologic origins for chronic obstructive pulmonary disease. Int J Chron Obstruct Pulmon Dis 2019; 14:1139-1158. [PMID: 31213794 PMCID: PMC6549659 DOI: 10.2147/copd.s203215] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 04/18/2019] [Indexed: 12/27/2022] Open
Abstract
COPD, characterized by long-term poorly irreversible airway limitation and persistent respiratory symptoms, has resulted in enormous challenges to human health worldwide, with increasing rates of prevalence, death, and disability. Although its origin was thought to be in the interactions of genetic with environmental factors, the effects of environmental factors on the disease during different life stages remain little known. Without clear mechanisms and radical cure for it, early screening and prevention of COPD seem to be important. In this review, we will discuss the etiologic origins for poor lung function and COPD caused by specific adverse effects during corresponding life stages, as well as try to find new insights and potential prevention strategies for this disease.
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Affiliation(s)
- Xinwei Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming City, Yunnan Province, People's Republic of China.,Medical School, Kunming University of Science and Technology, Kunming City, Yunnan Province, People's Republic of China
| | - Xi Mu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming City, Yunnan Province, People's Republic of China
| | - Li Deng
- The Pathology Department, First People's Hospital of Yunnan Province, Kunming City, Yunnan Province, People's Republic of China
| | - Aili Fu
- Department of Oncology, Yunfeng Hospital, Xuanwei City, Yunnan Province, People's Republic of China
| | - Endong Pu
- Department of Thoracic Surgery, Yunfeng Hospital, Xuanwei City, Yunnan Province, People's Republic of China
| | - Tao Tang
- Medical School, Kunming University of Science and Technology, Kunming City, Yunnan Province, People's Republic of China
| | - Xiangyang Kong
- Medical School, Kunming University of Science and Technology, Kunming City, Yunnan Province, People's Republic of China
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Bermingham ML, Walker RM, Marioni RE, Morris SW, Rawlik K, Zeng Y, Campbell A, Redmond P, Whalley HC, Adams MJ, Hayward C, Deary IJ, Porteous DJ, McIntosh AM, Evans KL. Identification of novel differentially methylated sites with potential as clinical predictors of impaired respiratory function and COPD. EBioMedicine 2019; 43:576-586. [PMID: 30935889 PMCID: PMC6557748 DOI: 10.1016/j.ebiom.2019.03.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/25/2019] [Accepted: 03/25/2019] [Indexed: 12/22/2022] Open
Abstract
Background The causes of poor respiratory function and COPD are incompletely understood, but it is clear that genes and the environment play a role. As DNA methylation is under both genetic and environmental control, we hypothesised that investigation of differential methylation associated with these phenotypes would permit mechanistic insights, and improve prediction of COPD. We investigated genome-wide differential DNA methylation patterns using the recently released 850 K Illumina EPIC array. This is the largest single population, whole-genome epigenetic study to date. Methods Epigenome-wide association studies (EWASs) of respiratory function and COPD were performed in peripheral blood samples from the Generation Scotland: Scottish Family Health Study (GS:SFHS) cohort (n = 3781; 274 COPD cases and 2919 controls). In independent COPD incidence data (n = 149), significantly differentially methylated sites (DMSs; p < 3.6 × 10−8) were evaluated for their added predictive power when added to a model including clinical variables, age, sex, height and smoking history using receiver operating characteristic analysis. The Lothian Birth Cohort 1936 (LBC1936) was used to replicate association (n = 895) and prediction (n = 178) results. Findings We identified 28 respiratory function and/or COPD associated DMSs, which mapped to genes involved in alternative splicing, JAK-STAT signalling, and axon guidance. In prediction analyses, we observed significant improvement in discrimination between COPD cases and controls (p < .05) in independent GS:SFHS (p = .016) and LBC1936 (p = .010) datasets by adding DMSs to a clinical model. Interpretation Identification of novel DMSs has provided insight into the molecular mechanisms regulating respiratory function and aided prediction of COPD risk. Further studies are needed to assess the causality and clinical utility of identified associations. Fund Wellcome Trust Strategic Award 10436/Z/14/Z.
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Affiliation(s)
- Mairead L Bermingham
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK.
| | - Rosie M Walker
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Riccardo E Marioni
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK; Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK
| | - Stewart W Morris
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Konrad Rawlik
- Division of Genetics and Genomics, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Easter Bush, Roslin, UK
| | - Yanni Zeng
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Archie Campbell
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK; Usher Institute of Population Health Sciences and Informatics, University of Edinburgh, Edinburgh, UK
| | - Paul Redmond
- Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK
| | - Heather C Whalley
- Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK
| | - Mark J Adams
- Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK
| | - Caroline Hayward
- Medical Research Council Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Ian J Deary
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK
| | - David J Porteous
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK; Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK
| | - Andrew M McIntosh
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK; Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK; Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK
| | - Kathryn L Evans
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK; Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, UK
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Nuñez A, Sarasate M, Loeb E, Esquinas C, Miravitlles M, Barrecheguren M. Practical Guide to the Identification and Diagnosis of Asthma-COPD Overlap (ACO). COPD 2019; 16:1-7. [PMID: 30789039 DOI: 10.1080/15412555.2019.1575802] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is one of the leading causes of mortality around the world. COPD is characterised by a heterogeneous clinical presentation and prognosis which may vary according to the clinical phenotype. One of the phenotypes of COPD most frequently studied is the asthma-COPD overlap (ACO), however, there are no universally accepted diagnostic criteria for ACO. It is recognised that the term ACO includes patients with clinical features of both asthma and COPD, such as more intense eosinophilic bronchial inflammation, more severe respiratory symptoms and more frequent exacerbations, but in contrast, it is associated with a better prognosis compared to COPD. More importantly, ACO patients show better response to inhaled corticosteroid treatment than other COPD phenotypes. The diagnosis of ACO can be difficult in clinical practice, and the identification of these patients can be a challenge for non-specialized physicians. We describe how to recognise and diagnose ACO based on a recently proposed Spanish algorithm and by the analysis of three clinical cases of patients with COPD. The diagnosis of ACO is based on the diagnosis of COPD (chronic airflow obstruction in an adult with significant smoking exposure), in addition to a current diagnosis of asthma and/or signficant eosinophilia.
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Affiliation(s)
- Alexa Nuñez
- a Pneumology Department , University Hospital Vall d'Hebron/Vall d'Hebron Research Institute (VHIR) , Barcelona , Spain
| | - Mikel Sarasate
- a Pneumology Department , University Hospital Vall d'Hebron/Vall d'Hebron Research Institute (VHIR) , Barcelona , Spain
| | - Eduardo Loeb
- a Pneumology Department , University Hospital Vall d'Hebron/Vall d'Hebron Research Institute (VHIR) , Barcelona , Spain
| | - Cristina Esquinas
- a Pneumology Department , University Hospital Vall d'Hebron/Vall d'Hebron Research Institute (VHIR) , Barcelona , Spain
| | - Marc Miravitlles
- a Pneumology Department , University Hospital Vall d'Hebron/Vall d'Hebron Research Institute (VHIR) , Barcelona , Spain.,b CIBER de Enfermedades Respiratorias (CIBERES) , Barcelona , Spain
| | - Miriam Barrecheguren
- a Pneumology Department , University Hospital Vall d'Hebron/Vall d'Hebron Research Institute (VHIR) , Barcelona , Spain
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Hur GY, Broide DH. Genes and Pathways Regulating Decline in Lung Function and Airway Remodeling in Asthma. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2019; 11:604-621. [PMID: 31332973 PMCID: PMC6658410 DOI: 10.4168/aair.2019.11.5.604] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 04/15/2019] [Accepted: 04/19/2019] [Indexed: 12/14/2022]
Abstract
Asthma is a common disorder of the airways characterized by airway inflammation and by decline in lung function and airway remodeling in a subset of asthmatics. Airway remodeling is characterized by structural changes which include airway smooth muscle hypertrophy/hyperplasia, subepithelial fibrosis due to thickening of the reticular basement membrane, mucus metaplasia of the epithelium, and angiogenesis. Epidemiologic studies suggest that both genetic and environmental factors may contribute to decline in lung function and airway remodeling in a subset of asthmatics. Environmental factors include respiratory viral infection-triggered asthma exacerbations, and tobacco smoke. There is also evidence that several asthma candidate genes may contribute to decline in lung function, including ADAM33, PLAUR, VEGF, IL13, CHI3L1, TSLP, GSDMB, TGFB1, POSTN, ESR1 and ARG2. In addition, mediators or cytokines, including cysteinyl leukotrienes, matrix metallopeptidase-9, interleukin-33 and eosinophil expression of transforming growth factor-β, may contribute to airway remodeling in asthma. Although increased airway smooth muscle is associated with reduced lung function (i.e. forced expiratory volume in 1 second) in asthma, there have been few long-term studies to determine how individual pathologic features of airway remodeling contribute to decline in lung function in asthma. Clinical studies with inhibitors of individual gene products, cytokines or mediators are needed in asthmatic patients to identify their individual role in decline in lung function and/or airway remodeling.
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Affiliation(s)
- Gyu Young Hur
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.,Department of Medicine, University of California San Diego, La Jolla, CA, USA
| | - David H Broide
- Department of Medicine, University of California San Diego, La Jolla, CA, USA.
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Morales E, Duffy D. Genetics and Gene-Environment Interactions in Childhood and Adult Onset Asthma. Front Pediatr 2019; 7:499. [PMID: 31921716 PMCID: PMC6918916 DOI: 10.3389/fped.2019.00499] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 11/18/2019] [Indexed: 11/13/2022] Open
Abstract
Asthma is a heterogeneous disease that results from the complex interaction between genetic factors and environmental exposures that occur at critical periods throughout life. It seems plausible to regard childhood-onset and adult-onset asthma as different entities, each with a different pathophysiology, trajectory, and outcome. This review provides an overview about the role of genetics and gene-environment interactions in these two conditions. Looking at the genetic overlap between childhood and adult onset disease gives one window into whether there is a correlation, as well as to mechanism. A second window is offered by the genetics of the relationship between each type of asthma and other phenotypes e.g., obesity, chronic obstructive pulmonary disease (COPD), atopy, vitamin D levels, and inflammatory and immune status; and third, the genetic-specific responses to the many environmental exposures that influence risk throughout life, and particularly those that occur during early-life development. These represent a large number of possible combinations of genetic and environmental factors, at least 150 known genetic loci vs. tobacco smoke, outdoor air pollutants, indoor exposures, farming environment, and microbial exposures. Considering time of asthma onset extends the two-dimensional problem of gene-environment interactions to a three-dimensional problem, since identified gene-environment interactions seldom replicate for childhood and adult asthma, which suggests that asthma susceptibility to environmental exposures may biologically differ from early life to adulthood as a result of different pathways and mechanisms of the disease.
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Affiliation(s)
- Eva Morales
- Biomedical Research Institute of Murcia (IMIB-Arrixaca), University of Murcia, Murcia, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
| | - David Duffy
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
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