1
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Zhang X, Gray AR, Hancox RJ. Distinct trajectories of lung function from childhood to mid-adulthood. Thorax 2024:thorax-2023-220436. [PMID: 38499347 DOI: 10.1136/thorax-2023-220436] [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: 05/14/2023] [Accepted: 02/10/2024] [Indexed: 03/20/2024]
Abstract
RATIONALE Life course trajectories of lung function development and decline influence the risk for lung disease but are poorly documented. OBJECTIVE To document lung function trajectories from childhood to mid-adult life. METHODS We modelled forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC) and FEV1/FVC at ages 9, 11, 13, 15, 18, 21, 26, 32, 38 and 45 years from a population-based cohort using latent profile analysis to identify distinct subgroups of participants with similar lung function trajectories. Regression analyses were used to assess associations between the trajectories, early life factors and postbronchodilator airflow obstruction at age 45. RESULTS Among 865 participants with ≥6 measures of lung function, we identified 10 distinct FEV1 trajectories. Most were approximately parallel except for a childhood airway hyper-responsiveness-related persistently low trajectory (3% of study population); two accelerated-decline trajectories, one of which (8%) was associated with smoking and higher adult body mass index (BMI) and a catch-up trajectory (8%). Findings for FEV1/FVC trajectories were similar. Nine trajectories were identified for FVC: most were also approximately parallel except for a higher BMI-related accelerated-decline trajectory. The three FEV1 trajectories leading to the lowest FEV1 values comprised 19% of the cohort but contributed 55% of airflow obstruction at age 45. CONCLUSIONS Lung function trajectories to mid-adult life are largely established before adolescence, with a few exceptions: a childhood airway hyper-responsiveness-related persistently low trajectory, which starts low and gets worse with age, and accelerated adult decline trajectories associated with smoking and obesity. Adverse trajectories are associated with a high risk of airflow obstruction in mid-adult life.
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Affiliation(s)
- Xian Zhang
- Department of Preventive & Social Medicine, University of Otago, Dunedin, New Zealand
- National Perinatal Epidemiology and Statistics Unit, Centre for Big Data Research in Health, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia
| | - Andrew R Gray
- Biostatistics Centre, Division of Health Sciences, University of Otago, Dunedin, New Zealand
| | - Robert J Hancox
- Department of Preventive & Social Medicine, University of Otago, Dunedin, New Zealand
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2
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Bush A. Going Down, Dooby Doo Down, Down: Identifying Rapid Spirometry Decline. Am J Respir Crit Care Med 2023; 208:1014-1015. [PMID: 37552692 PMCID: PMC10867937 DOI: 10.1164/rccm.202307-1212ed] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 08/08/2023] [Indexed: 08/10/2023] Open
Affiliation(s)
- Andrew Bush
- National Heart and Lung Institute Imperial College London, United Kingdom and Imperial Centre for Paediatrics and Child Health Royal Brompton Hospital London, England
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3
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Pellegrino D, Casas-Recasens S, Faner R, Palange P, Agusti A. When GETomics meets aging and exercise in COPD. Respir Med 2023:107294. [PMID: 37295536 DOI: 10.1016/j.rmed.2023.107294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/17/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023]
Abstract
The term GETomics has been recently proposed to illustrate that human health and disease are actually the final outcome of many dynamic, interacting and cumulative gene (G) - environment (E) interactions that occur through the lifetime (T) of the individual. According to this new paradigm, the final outcome of any GxE interactions depends on both the age of the individual at which such GxE interaction occurs as well as on the previous, cumulative history of previous GxE interactions through the induction of epigenetic changes and immune memory (both lasting overtime). Following this conceptual approach, our understanding of the pathogenesis of chronic obstructive pulmonary disease (COPD) has changed dramatically. Traditionally believed to be a self-inflicted disease induced by tobacco smoking occurring in older men and characterized by an accelerated decline of lung function with age, now we understand that there are many other risk factors associated with COPD, that it occurs also in females and young individuals, that there are different lung function trajectories through life, and that COPD is not always characterized by accelerated lung function decline. In this paper we discuss how a GETomics approach to COPD may open new perspectives to better understand its relationship with exercise limitation and the ageing process.
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Affiliation(s)
- D Pellegrino
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Italy; Respiratory and Critical Care Unit, Policlinico Umberto I Hospital of Rome, Italy
| | - S Casas-Recasens
- Institut d'investigacions biomédiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Centro Investigacion Biomedica en Red de Enfermedades Respiratorias (CIBERES), Spain
| | - R Faner
- Institut d'investigacions biomédiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Centro Investigacion Biomedica en Red de Enfermedades Respiratorias (CIBERES), Spain; Cathedra Salut Respiratoria, University of Barcelona, Spain
| | - P Palange
- Department of Public Health and Infectious Diseases, Sapienza University of Rome, Italy; Respiratory and Critical Care Unit, Policlinico Umberto I Hospital of Rome, Italy
| | - A Agusti
- Institut d'investigacions biomédiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Centro Investigacion Biomedica en Red de Enfermedades Respiratorias (CIBERES), Spain; Cathedra Salut Respiratoria, University of Barcelona, Spain; Respiratory Institute, Clinic Barcelona, Spain.
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4
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Kayongo A, Robertson NM, Siddharthan T, Ntayi ML, Ndawula JC, Sande OJ, Bagaya BS, Kirenga B, Mayanja-Kizza H, Joloba ML, Forslund SK. Airway microbiome-immune crosstalk in chronic obstructive pulmonary disease. Front Immunol 2023; 13:1085551. [PMID: 36741369 PMCID: PMC9890194 DOI: 10.3389/fimmu.2022.1085551] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/28/2022] [Indexed: 01/19/2023] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) has significantly contributed to global mortality, with three million deaths reported annually. This impact is expected to increase over the next 40 years, with approximately 5 million people predicted to succumb to COPD-related deaths annually. Immune mechanisms driving disease progression have not been fully elucidated. Airway microbiota have been implicated. However, it is still unclear how changes in the airway microbiome drive persistent immune activation and consequent lung damage. Mechanisms mediating microbiome-immune crosstalk in the airways remain unclear. In this review, we examine how dysbiosis mediates airway inflammation in COPD. We give a detailed account of how airway commensal bacteria interact with the mucosal innate and adaptive immune system to regulate immune responses in healthy or diseased airways. Immune-phenotyping airway microbiota could advance COPD immunotherapeutics and identify key open questions that future research must address to further such translation.
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Affiliation(s)
- Alex Kayongo
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda,Department of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda,Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda,Department of Medicine, Center for Emerging Pathogens, Rutgers, The State University of New Jersey, New Jersey Medical School, Newark, NJ, United States
| | | | - Trishul Siddharthan
- Division of Pulmonary Medicine, School of Medicine, University of Miami, Miami, FL, United States
| | - Moses Levi Ntayi
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda,Department of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda,Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Josephine Caren Ndawula
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Obondo J. Sande
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Bernard S. Bagaya
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Bruce Kirenga
- Makerere University Lung Institute, Makerere University College of Health Sciences, Kampala, Uganda
| | - Harriet Mayanja-Kizza
- Department of Medicine, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Moses L. Joloba
- Department of Immunology and Molecular Biology, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Sofia K. Forslund
- Experimental and Clinical Research Center, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany,Experimental and Clinical Research Center, a cooperation of Charité - Universitatsmedizin Berlin and Max Delbrück Center for Molecular Medicine, Berlin, Germany,Charité-Universitatsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany,DZHK (German Centre for Cardiovascular Research), Partner Site Berlin, Berlin, Germany,Structural and Computational Biology Unit, European Molecular Biology Laboratory, Heidelberg, Germany,*Correspondence: Sofia K. Forslund,
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5
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Bush A. Too Little, Too Late: Adult Lung Disease Cannot Be Prevented by Interventions in Adult Life. Am J Respir Crit Care Med 2023; 207:124-126. [PMID: 35972758 PMCID: PMC9893320 DOI: 10.1164/rccm.202208-1537ed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Andrew Bush
- Professor of Paediatrics and Paediatric RespirologyImperial CollegeLondon, United Kingdom,Imperial Centre for Paediatrics and Child HealthImperial CollegeLondon, United Kingdom,Consultant Paediatric Chest PhysicianRoyal Brompton HospitalLondon, United Kingdom
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6
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Lai SY, Liu YL, Jiang YM, Liu T. Precautions against COVID-19 reduce respiratory virus infections among children in Southwest China. Medicine (Baltimore) 2022; 101:e30604. [PMID: 36123935 PMCID: PMC9477712 DOI: 10.1097/md.0000000000030604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Acute respiratory tract infections pose a serious threat to the health of children worldwide, with viral infections representing a major etiology of this type of disease. Protective measures such as mask-wearing, social distancing, and hand hygiene can be effective in curbing the spread of severe acute respiratory syndrome coronavirus 2. These precautions may also have an impact on the spread of other respiratory viruses. In this study, we retrospectively compared the respiratory virus infections of children in Southwest China before and after the outbreak of COVID-19. Nasopharyngeal swabs were collected from 1578 patients under 14 years old with acute respiratory tract infection symptoms before and after COVID-19 pandemic. Nine common respiratory viruses including human bocavirus, human rhinoviruses, human coronaviruses, human adenoviruses, human metapneumovirus, respiratory syncytial virus, influenza A virus, influenza B virus, and parainfluenza virus were measured by advanced fragment analysis. The respiratory virus infection rates among children of all ages and genders in Southwest China under the precautions against COVID-19 pandemic were significantly lower than that of the same period before the pandemic. Our findings indicate that public health measures implemented during the COVID-19 pandemic, including strict mask-wearing, social distancing, and hand hygiene, may be effective in preventing the transmission of other respiratory viruses in children, thereby controlling the spread of infections.
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Affiliation(s)
- Shu-Yu Lai
- Department of Laboratory Medicine, West China Second University Hospital, and Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Yan-Ling Liu
- Department of Laboratory Medicine, West China Second University Hospital, and Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Yong-Mei Jiang
- Department of Laboratory Medicine, West China Second University Hospital, and Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
| | - Ting Liu
- Department of Laboratory Medicine, West China Second University Hospital, and Key Laboratory of Obstetric and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu, China
- State Key Laboratory of Biotherapy and Cancer Center/National Collaborative Innovation Center for Biotherapy, Sichuan University, Chengdu, China
- *Correspondence: Ting Liu, Department of Laboratory Medicine, West China Second University Hospital, Sichuan University, No. 20, Section 3, Renmin South Road, Chengdu, Sichuan 610041, China ()
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7
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Pando‐Sandoval A, Ruano‐Ravina A, Candal‐Pedreira C, Rodríguez‐García C, Represas‐Represas C, Golpe R, Fernández‐Villar A, Pérez‐Ríos M. Risk factors for chronic obstructive pulmonary disease in never‐smokers: A systematic review. THE CLINICAL RESPIRATORY JOURNAL 2022; 16:261-275. [PMID: 35142054 PMCID: PMC9060104 DOI: 10.1111/crj.13479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/14/2022] [Accepted: 01/24/2022] [Indexed: 11/30/2022]
Abstract
Introduction Relatively little is known about the risk factors for chronic obstructive pulmonary disease (COPD) in never‐smokers, and these factors have not yet been fully characterised. This study therefore sought to analyse COPD risk factors in never‐smokers by conducting a systematic review of the literature on the topic. Materials and methods We performed a search in PubMed (Medline) and Embase from 2000 onwards, to locate studies on COPD in never‐smokers. For literature search and evidence synthesis purposes, we used the PRISMA guidelines and drew up a specific quality scale to quantify the evidence of each study included. Results The bibliographic search retrieved a total of 557 papers, 20 of which fulfilled the designated inclusion criteria (two case–control studies, four cohort studies and 14 cross‐sectional studies). These studies were undertaken in Europe, the United States, Latin America, Asia and Africa. The risk factors for never‐smokers were varied and ranged from exposure to biomass, occupational exposure and passive smoking to having a history of asthma, tuberculosis or respiratory infections during childhood. The effect of residential radon was unclear. The highest risk was obtained for previous respiratory diseases of any type, with a magnitude much higher than that observed for other risk factors. Conclusions There are few studies on COPD risk factors in never‐smokers. More purpose‐designed studies in this subpopulation are thus called for, including well‐designed studies to specifically assess if indoor radon has any role on COPD onset.
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Affiliation(s)
- Ana Pando‐Sandoval
- Department of Pneumology Central University Teaching Hospital of Asturias Oviedo Spain
- Department of Preventive Medicine and Public Health University of Santiago de Compostela Santiago de Compostela Spain
| | - Alberto Ruano‐Ravina
- Department of Preventive Medicine and Public Health University of Santiago de Compostela Santiago de Compostela Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER en Epidemiología y Salud Pública‐ CIBERESP) Madrid Spain
- Health Research Institute of Santiago de Compostela (Instituto de Investigación Sanitaria de Santiago de Compostela ‐ IDIS) Santiago de Compostela Spain
| | - Cristina Candal‐Pedreira
- Department of Preventive Medicine and Public Health University of Santiago de Compostela Santiago de Compostela Spain
| | - Carlota Rodríguez‐García
- Department of Pneumology University Clinical Teaching Hospital of Santiago de Compostela Santiago de Compostela Spain
| | - Cristina Represas‐Represas
- Department of Pneumology Alvaro Cunqueiro University Teaching Hospital, NeumoVigo I+i Research Group, Southern Galician Institute of Health Research (Instituto de Investigación Sanitaria Galicia Sur ‐ IISGS) Vigo Spain
| | - Rafael Golpe
- Department of Pneumology Lucus Augusti University Teaching Hospital Lugo Spain
- Grupo C039 Biodiscovery HULA‐USC Health Research Institute of Santiago de Compostela Santiago de Compostela Spain
| | - Alberto Fernández‐Villar
- Department of Pneumology Alvaro Cunqueiro University Teaching Hospital, NeumoVigo I+i Research Group, Southern Galician Institute of Health Research (Instituto de Investigación Sanitaria Galicia Sur ‐ IISGS) Vigo Spain
| | - Mónica Pérez‐Ríos
- Department of Preventive Medicine and Public Health University of Santiago de Compostela Santiago de Compostela Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBER en Epidemiología y Salud Pública‐ CIBERESP) Madrid Spain
- Health Research Institute of Santiago de Compostela (Instituto de Investigación Sanitaria de Santiago de Compostela ‐ IDIS) Santiago de Compostela Spain
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8
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Wang G, Hallberg J, Charalampopoulos D, Sanahuja MC, Breyer-Kohansal R, Langhammer A, Granell R, Vonk JM, Mian A, Olvera N, Laustsen LM, Rönmark E, Abellan A, Agusti A, Arshad SH, Bergström A, Boezen HM, Breyer MK, Burghuber O, Bolund AC, Custovic A, Devereux G, Donaldson GC, Duijts L, Esplugues A, Faner R, Ballester F, Garcia-Aymerich J, Gehring U, Haider S, Hartl S, Backman H, Holloway JW, Koppelman GH, Lertxundi A, Holmen TL, Lowe L, Mensink-Bout SM, Murray CS, Roberts G, Hedman L, Schlünssen V, Sigsgaard T, Simpson A, Sunyer J, Torrent M, Turner S, Van den Berge M, Vermeulen RCH, Vikjord SAA, Wedzicha JA, Maitland van der Zee AH, Melén E. Spirometric phenotypes from early childhood to young adulthood: a Chronic Airway Disease Early Stratification study. ERJ Open Res 2021; 7:00457-2021. [PMID: 34881328 PMCID: PMC8646001 DOI: 10.1183/23120541.00457-2021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 08/25/2021] [Indexed: 02/05/2023] Open
Abstract
Background The prevalences of obstructive and restrictive spirometric phenotypes, and their relation to early-life risk factors from childhood to young adulthood remain poorly understood. The aim was to explore these phenotypes and associations with well-known respiratory risk factors across ages and populations in European cohorts. Methods We studied 49 334 participants from 14 population-based cohorts in different age groups (≤10, >10–15, >15–20, >20–25 years, and overall, 5–25 years). The obstructive phenotype was defined as forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) z-score less than the lower limit of normal (LLN), whereas the restrictive phenotype was defined as FEV1/FVC z-score ≥LLN, and FVC z-score <LLN. Results The prevalence of obstructive and restrictive phenotypes varied from 3.2–10.9% and 1.8–7.7%, respectively, without clear age trends. A diagnosis of asthma (adjusted odds ratio (aOR=2.55, 95% CI 2.14–3.04), preterm birth (aOR=1.84, 1.27–2.66), maternal smoking during pregnancy (aOR=1.16, 95% CI 1.01–1.35) and family history of asthma (aOR=1.44, 95% CI 1.25–1.66) were associated with a higher prevalence of obstructive, but not restrictive, phenotype across ages (5–25 years). A higher current body mass index (BMI was more often observed in those with the obstructive phenotype but less in those with the restrictive phenotype (aOR=1.05, 95% CI 1.03–1.06 and aOR=0.81, 95% CI 0.78–0.85, per kg·m−2 increase in BMI, respectively). Current smoking was associated with the obstructive phenotype in participants older than 10 years (aOR=1.24, 95% CI 1.05–1.46). Conclusion Obstructive and restrictive phenotypes were found to be relatively prevalent during childhood, which supports the early origins concept. Several well-known respiratory risk factors were associated with the obstructive phenotype, whereas only low BMI was associated with the restrictive phenotype, suggesting different underlying pathobiology of these two phenotypes. Obstructive and restrictive phenotypes are present from childhood to adulthood but without age trends. Established risk factors for airway disease are associated with the obstructive phenotype, whereas low BMI is associated with the restrictive.https://bit.ly/3BMoMtI
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Affiliation(s)
- Gang Wang
- Dept of Integrated Traditional Chinese and Western Medicine, West China Hospital, Sichuan University, Sichuan, China.,Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Shared first authors
| | - Jenny Hallberg
- Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden.,Shared first authors
| | - Dimitrios Charalampopoulos
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Maribel Casas Sanahuja
- ISGlobal, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain.,Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Robab Breyer-Kohansal
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria.,Dept of Respiratory and Critical Care Medicine, Clinic Penzing, Vienna, Austria
| | - Arnulf Langhammer
- Dept of Public Health and Nursing, Faculty of Medicine and Health Sciences, HUNT Research Centre, Norwegian University of Science and Technology (NTNU), Levanger, Norway
| | - Raquel Granell
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - Judith M Vonk
- Dept of Epidemiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, University of Groningen, Groningen, The Netherlands
| | - Annemiek Mian
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Division of Respiratory Medicine and Allergology, and Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Núria Olvera
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Institut d'investigacions biomediques August Pi I Sunyer, Barcelona, Spain
| | - Lisbeth Mølgaard Laustsen
- Dept of Public Health, Environment Occupation and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
| | - Eva Rönmark
- Dept of Public Health and Clinical Medicine, Section for Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
| | - Alicia Abellan
- ISGlobal, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain.,Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Fundació Institut Universitari per a la recerca a l'Atenció Primària de Salut Jordi Gol i Gurina, Barcelona, Spain
| | - Alvar Agusti
- Institut d'investigacions biomediques August Pi I Sunyer, Barcelona, Spain.,Respiratory Institute, Hospital Clinic, Univ. Barcelona, Barcelona, Spain.,CIBERESP (ISCiii), Barcelona, Spain
| | - Syed Hasan Arshad
- David Hide Asthma and Allergy Research Centre, Newport, UK.,NIHR Southampton Biomedical Research Centre, University Hospitals Southampton NHS Foundation Trust, Southampton, UK.,Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
| | - H Marike Boezen
- Dept of Epidemiology, University Medical Center Groningen, Groningen, The Netherlands
| | - Marie-Kathrin Breyer
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria.,Dept of Respiratory and Critical Care Medicine, Clinic Penzing, Vienna, Austria
| | - Otto Burghuber
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria.,Faculty of Medicine, Sigmund Freud University, Vienna, Austria
| | - Anneli Clea Bolund
- Dept of Public Health, Environment Occupation and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
| | - Adnan Custovic
- National Heart and Lung Institute, Imperial College London, London, UK
| | | | - Gavin C Donaldson
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Liesbeth Duijts
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Division of Respiratory Medicine and Allergology, and Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Ana Esplugues
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Nursing Department, Faculty of Nursing and Chiropody, Universitat de València, Valencia, Spain.,Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Valencia, Spain
| | - Rosa Faner
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Ferran Ballester
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Nursing Department, Faculty of Nursing and Chiropody, Universitat de València, Valencia, Spain.,Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Valencia, Spain
| | - Judith Garcia-Aymerich
- ISGlobal, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain.,Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Ulrike Gehring
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Sadia Haider
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Sylvia Hartl
- Ludwig Boltzmann Institute for Lung Health, Vienna, Austria.,Dept of Respiratory and Critical Care Medicine, Clinic Penzing, Vienna, Austria.,Faculty of Medicine, Sigmund Freud University, Vienna, Austria
| | - Helena Backman
- Dept of Public Health and Clinical Medicine, Section for Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
| | - John W Holloway
- NIHR Southampton Biomedical Research Centre, University Hospitals Southampton NHS Foundation Trust, Southampton, UK.,Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Gerard H Koppelman
- University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, University of Groningen, Groningen, The Netherlands.,Dept of Pediatric Pulmonology and Pediatric Allergology, University Medical Center Groningen, Beatrix Children's Hospital, University of Groningen, Groningen, The Netherlands
| | - Aitana Lertxundi
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain.,Dept of Preventive Medicine and Public Health, Faculty of Medicine, University of the Basque Country (UPV/EHU), Leioa, Spain.,BIODONOSTIA Health Research Institute, Donostia-San Sebastian, Spain
| | - Turid Lingaas Holmen
- Dept of Public Health and General Practice, HUNT Research Center, NTNU, Levanger, Norway
| | - Lesley Lowe
- Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester Academic Health Science Centre, NIHR, Manchester, UK.,Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Sara M Mensink-Bout
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Clare S Murray
- Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester Academic Health Science Centre, NIHR, Manchester, UK.,Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Graham Roberts
- David Hide Asthma and Allergy Research Centre, Newport, UK.,NIHR Southampton Biomedical Research Centre, University Hospitals Southampton NHS Foundation Trust, Southampton, UK.,Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Linnea Hedman
- Dept of Public Health and Clinical Medicine, Section for Sustainable Health, The OLIN Unit, Umeå University, Umeå, Sweden
| | - Vivi Schlünssen
- Dept of Public Health, Environment Occupation and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
| | - Torben Sigsgaard
- Dept of Public Health, Environment Occupation and Health, Danish Ramazzini Centre, Aarhus University, Aarhus, Denmark
| | - Angela Simpson
- Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester Academic Health Science Centre, NIHR, Manchester, UK.,Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester, UK
| | - Jordi Sunyer
- ISGlobal, Barcelona, Spain.,Universitat Pompeu Fabra, Barcelona, Spain.,IMIM-Parc Salut Mar, Barcelona, Spain
| | | | - Stephen Turner
- Royal Aberdeen Children's Hospital NHS Grampian, Aberdeen, UK
| | - Maarten Van den Berge
- University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, University of Groningen, Groningen, The Netherlands.,Dept of Pulmonary Diseases, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Roel C H Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands
| | - Sigrid Anna Aalberg Vikjord
- Dept of Public Health and Nursing, Faculty of Medicine and Health Sciences, HUNT Research Centre, Norwegian University of Science and Technology (NTNU), Levanger, Norway.,Dept of Medicine and Rehabilitation, Levanger Hospital, Nord-Trøndelag Hospital Trust, Levanger, Norway
| | | | - Anke H Maitland van der Zee
- Dept of Respiratory Medicine, Amsterdam University Medical Centers (UMC), University of Amsterdam.,Pediatric Respiratory Medicine, Emma Children's Hospital, Amsterdam UMC, Amsterdam, The Netherlands.,Shared last authors
| | - Erik Melén
- Dept of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden.,Sachs' Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden.,Shared last authors
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9
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Bush A. Impact of early life exposures on respiratory disease. Paediatr Respir Rev 2021; 40:24-32. [PMID: 34144911 DOI: 10.1016/j.prrv.2021.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/20/2021] [Indexed: 12/21/2022]
Abstract
The antecedents of asthma and chronic obstructive pulmonary disease (COPD) lie before school age. Adverse effects are transgenerational, antenatal and in the preschool years. Antenatal adverse effects impair spirometry by causing low birth weight, altered lung structure and immune function, and sensitizing the foetus to later insults. The key stages of normal lung health are lung function at birth, lung growth to a plateau age 20-25 years, and the phase of decline thereafter; contrary to perceived wisdom, accelerated decline is not related to smoking. There are different trajectories of lung function. Lung function usually tracks from preschool to late middle age. Asthma is driven by antenatal and early life influences. The airflow obstruction, emphysema and multi-morbidity of COPD all start early. Failure to reach a normal plateau and accelerated decline in lung function are risk factors for COPD. Airway disease cannot be prevented in adult life; prevention must start early.
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Affiliation(s)
- Andrew Bush
- Paediatrics and Paediatric Respirology, Imperial College, UK; Imperial Centre for Paediatrics and Child Health, UK; Consultant Paediatric Chest Physician, Royal Brompton Harefield NHS Foundation Trust, UK.
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10
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Heightened Local T h17 Cell Inflammation Is Associated with Severe Community-Acquired Pneumonia in Children under the Age of 1 Year. Mediators Inflamm 2021; 2021:9955168. [PMID: 34602860 PMCID: PMC8482031 DOI: 10.1155/2021/9955168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 07/29/2021] [Accepted: 08/05/2021] [Indexed: 12/31/2022] Open
Abstract
Severe community-acquired pneumonia (sCAP) early in life is a leading cause of morbidity, mortality, and irreversible sequelae. Herein, we report the clinical, etiological, and immunological characteristics of 62 children age < 1 year. We measured 27 cytokines in plasma and bronchoalveolar lavage (BAL) from 62 children age < 1 year who were diagnosed with CAP, and then, we analyzed correlations among disease severity, clinical parameters, and etiology. Of the entire cohort, three cytokines associated with interleukin-17- (IL-17-) producing helper T cells (Th17 cells), IL-1β, IL-6, and IL-17, were significantly elevated in sCAP patients with high fold changes (FCs); in BAL, these cytokines were intercorrelated and associated with blood neutrophil counts, Hb levels, and mixed bacterial-viral infections. BAL IL-1β (area under the curve (AUC) 0.820), BAL IL-17 (AUC 0.779), and plasma IL-6 (AUC 0.778) had remarkable predictive power for sCAP. Our findings revealed that increased local Th17 cell immunity played a critical role in the development of sCAP in children age < 1 year. Th17 cell-related cytokines could serve as local and systemic inflammatory indicators of sCAP in this age group.
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11
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Çolak Y, Nordestgaard BG, Lange P, Vestbo J, Afzal S. Supernormal lung function and risk of COPD: A contemporary population-based cohort study. EClinicalMedicine 2021; 37:100974. [PMID: 34195585 PMCID: PMC8225980 DOI: 10.1016/j.eclinm.2021.100974] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 05/22/2021] [Accepted: 06/01/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Investigation of the natural history of chronic obstructive pulmonary disease (COPD) has led to the recognition that individuals with higher than normal lung function may have lower risk of developing COPD. We tested the hypothesis that individuals with supernormal lung function have lower risk of COPD. METHODS We followed 108,246 adults from the Copenhagen General Population Study recruited between 2003 and 2015 for clinical COPD outcomes until 2018. A subset of 16,892 attended another examination approximately 10 years later, allowing to investigate lung function decline and COPD development (forced expiratory volume in 1 se (FEV1)/forced vital capacity (FVC)<0·70 and FEV1<80% predicted with chronic respiratory symptom). Supernormal lung function was defined as FEV1>upper limit of normal (ULN). FINDINGS At baseline, 3944(4%) had supernormal lung function, 91,938(85%) normal lung function, and 12,364(11%) had below normal lung function. Individuals with baseline supernormal versus normal lung function had higher FEV1 decline but did not differ in FEV1/FVC decline. None had COPD at 10 years in those with supernormal lung function, while 3% had in those with normal lung function. Early-life risk factors associated with COPD development and smoking exposure in different stages of life were less common in individuals with supernormal lung function. Compared to individuals with normal lung function, multivariable adjusted hazard ratios in those with supernormal lung function were 0·19(95% confidence interval:0·08-0·46) for acute obstructive lung disease hospitalisations, 0·56(0·45-0·69) for pneumonia hospitalisations, and 0·81(0·72-0·91) for all-cause mortality. INTERPRETATION Supernormal lung function is associated with lower risk of developing COPD. FUNDING Herlev and Gentofte Hospital and Lundbeck Foundation.
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Affiliation(s)
- Yunus Çolak
- Department of Respiratory Medicine, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Børge G. Nordestgaard
- The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
| | - Peter Lange
- Department of Respiratory Medicine, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Public Health, Section of Epidemiology, University of Copenhagen, Copenhagen, Denmark
| | - Jørgen Vestbo
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Manchester Academic Health Science Centre, University of Manchester, and Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Shoaib Afzal
- The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark
- Corresponding author at: The Copenhagen General Population Study, Copenhagen University Hospital - Herlev and Gentofte, Herlev, Denmark.
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12
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King PT, Dousha L, Clarke N, Schaefer J, Carzino R, Sharma R, Wan KL, Anantharajah A, O'Sullivan K, Lu ZX, Holdsworth SR, Ranganathan S, Bardin PG, Armstrong DS. Phagocyte extracellular traps in children with neutrophilic airway inflammation. ERJ Open Res 2021; 7:00883-2020. [PMID: 34164555 PMCID: PMC8215332 DOI: 10.1183/23120541.00883-2020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 02/16/2021] [Indexed: 12/02/2022] Open
Abstract
Childhood lung infection is often associated with prominent neutrophilic airway inflammation and excess production of proteases such as neutrophil elastase (NE). The mechanisms responsible for this inflammation are not well understood. One potentially relevant pathway is the production of extracellular traps by neutrophils (NETs) and macrophages (METs). The aim of this study was to measure NET and MET expression in children and the effect of deoxyribonculease (DNase) 1 and α1-antitrypsin (AAT) on this process. We studied 76 children (median age of 4.0 years) with cystic fibrosis or chronic cough who underwent investigational bronchoscopy. NETs, METs and neutrophil elastase activity in bronchoalveolar lavage (BAL) samples were measured using confocal microscopy and functional assays. The effects of DNase 1 and AAT on NET/MET expression and neutrophil elastase activity were examined in vitro. Both subject groups had airway neutrophilia with prominent BAL production of NETs with neutrophil elastase co-expression; the mean %±standard error of the mean of neutrophils expressing NETs in the cystic fibrosis group was 23.3±2.8% and in the non-cystic fibrosis group was 28.4±3.9%. NET expression was higher in subjects who had detectable neutrophil elastase activity (p≤0.0074). The percentage of macrophages expressing METs in the cystic fibrosis group was 10.7±1.2% and in the non-cystic fibrosis group was 13.2±1.9%. DNase 1 decreased NET/MET expression (p<0.0001), but increased neutrophil elastase activity (p≤0.0137). The combination of AAT and DNase 1 reduced neutrophil elastase activity (p≤0.0049). We observed prominent extracellular trap formation in symptomatic children with and without cystic fibrosis. This innate inflammatory response was down-regulated by a combination of currently available therapeutics. Prominent extracellular trap formation may be observed in young children with airway inflammation, with and without cystic fibrosis. This innate inflammatory response is down-regulated by a combination of currently available therapeutics.https://bit.ly/3bDaWyC
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Affiliation(s)
- Paul T King
- Monash Lung and Sleep, Monash Medical Centre, Melbourne, Australia.,Monash University Dept of Medicine, Monash Medical Centre, Melbourne, Victoria, Australia
| | - Lovisa Dousha
- Monash Lung and Sleep, Monash Medical Centre, Melbourne, Australia.,Monash University Dept of Medicine, Monash Medical Centre, Melbourne, Victoria, Australia
| | - Nadeene Clarke
- Paediatric Respiratory Medicine, Royal Children's Hospital, Melbourne, Australia.,Murdoch Children's Research Institute, Melbourne, Australia
| | - Jennifer Schaefer
- Monash Lung and Sleep, Monash Medical Centre, Melbourne, Australia.,Monash Children's Hospital, Melbourne, Australia
| | - Rosemary Carzino
- Paediatric Respiratory Medicine, Royal Children's Hospital, Melbourne, Australia.,Murdoch Children's Research Institute, Melbourne, Australia
| | - Roleen Sharma
- Monash Lung and Sleep, Monash Medical Centre, Melbourne, Australia.,Monash University Dept of Medicine, Monash Medical Centre, Melbourne, Victoria, Australia
| | - Ken L Wan
- Dept of Biochemistry, Monash Pathology, Monash Health, Melbourne, Australia
| | - Aveena Anantharajah
- Monash Lung and Sleep, Monash Medical Centre, Melbourne, Australia.,Monash Children's Hospital, Melbourne, Australia
| | - Kim O'Sullivan
- Monash University Dept of Medicine, Monash Medical Centre, Melbourne, Victoria, Australia
| | - Zhong X Lu
- Monash University Dept of Medicine, Monash Medical Centre, Melbourne, Victoria, Australia.,Dept of Biochemistry, Monash Pathology, Monash Health, Melbourne, Australia
| | - Stephen R Holdsworth
- Monash University Dept of Medicine, Monash Medical Centre, Melbourne, Victoria, Australia.,Dept of Immunology, Monash Health, Melbourne, Australia
| | - Sarath Ranganathan
- Paediatric Respiratory Medicine, Royal Children's Hospital, Melbourne, Australia.,Murdoch Children's Research Institute, Melbourne, Australia.,Dept of Paediatrics, University of Melbourne, Melbourne, Australia
| | - Philip G Bardin
- Monash Lung and Sleep, Monash Medical Centre, Melbourne, Australia.,Monash University Dept of Medicine, Monash Medical Centre, Melbourne, Victoria, Australia.,Hudson Institute of Medical Research, Melbourne, Australia
| | - David S Armstrong
- Monash Lung and Sleep, Monash Medical Centre, Melbourne, Australia.,Monash Children's Hospital, Melbourne, Australia.,Monash University Dept of Paediatrics, Monash Medical Centre, Melbourne, Australia
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13
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Rhedin S, Lundholm C, Osvald EC, Almqvist C. Pneumonia in Infancy and Risk for Asthma: The Role of Familial Confounding and Pneumococcal Vaccination. Chest 2021; 160:422-431. [PMID: 33727032 PMCID: PMC8411448 DOI: 10.1016/j.chest.2021.03.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/11/2021] [Accepted: 03/04/2021] [Indexed: 10/27/2022] Open
Abstract
BACKGROUND Studies have reported an increased risk for asthma following lower respiratory tract infections, but few studies have specifically assessed this risk in children diagnosed with pneumonia in infancy. Furthermore, it is not fully understood whether this association is indicative of a causal relationship or if certain children have a predisposition for both diseases. RESEARCH QUESTION Are children diagnosed with pneumonia in infancy at increased risk for asthma, and what is the role of familial confounding and pneumococcal conjugate vaccine immunization on the association? STUDY DESIGN AND METHODS This study was a nationwide register-based cohort analysis of > 900,000 Swedish children to assess the association between pneumonia in infancy and prevalent asthma at 4 years. A secondary aim was to assess if the association has changed after the introduction of nationwide pneumococcal conjugate vaccine (PCV) immunization as this has led to a shift in pneumonia etiology. The study controlled for important confounders, including shared environmental and familial confounding, by using sibling analyses. RESULTS There was a strong association between pneumonia diagnosis in infancy and prevalent asthma at 4 years (adjusted OR, 3.38; 95% CI, 3.26-3.51), as well as in the full sibling analyses (adjusted OR, 2.81; 95% CI, 2.58-3.06). The risk for asthma following pneumonia diagnosis in infancy was slightly higher for those born in the PCV period compared with the pre-PCV period (adjusted OR, 3.80 [95% CI, 3.41-4.24] vs 3.28 [95% CI, 3.15-3.42]) when the proportion of viral pneumonia etiology was also higher (14.5% vs 10.7%, respectively) and the overall asthma prevalence was lower (5.3% vs 6.6%). INTERPRETATION Children diagnosed with pneumonia in infancy have a highly increased risk for prevalent asthma at 4 years, which might have implications for future asthma preventive measures and needs to be considered when assessing the morbidity that can be attributed to pneumonia.
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Affiliation(s)
- Samuel Rhedin
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Sachs' Children and Youth Hospital, Stockholm, Sweden.
| | - Cecilia Lundholm
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Emma Caffrey Osvald
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
| | - Catarina Almqvist
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden; Pediatric Allergy and Pulmonology Unit at Astrid Lindgren Children's Hospital, Karolinska University Hospital, Stockholm, Sweden
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14
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Choi JY, Rhee CK. Diagnosis and Treatment of Early Chronic Obstructive Lung Disease (COPD). J Clin Med 2020; 9:jcm9113426. [PMID: 33114502 PMCID: PMC7692717 DOI: 10.3390/jcm9113426] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 10/23/2020] [Accepted: 10/23/2020] [Indexed: 12/16/2022] Open
Abstract
Chronic obstructive lung disease (COPD) is responsible for substantial rates of mortality and economic burden, and is one of the most important public-health concerns. As the disease characteristics include irreversible airway obstruction and progressive lung function decline, there has been a great deal of interest in detection at the early stages of COPD during the “at risk” or undiagnosed preclinical stage to prevent the disease from progressing to the overt stage. Previous studies have used various definitions of early COPD, and the term mild COPD has also often been used. There has been a great deal of recent effort to establish a definition of early COPD, but comprehensive evaluation is still required, including identification of risk factors, various physiological and radiological tests, and clinical manifestations for diagnosis of early COPD, considering the heterogeneity of the disease. The treatment of early COPD should be considered from the perspective of prevention of disease progression and management of clinical deterioration. There has been a lack of studies on this topic as the definition of early COPD has been proposed only recently, and therefore further clinical studies are needed.
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Affiliation(s)
- Joon Young Choi
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
| | - Chin Kook Rhee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Correspondence: ; Tel.: +82-2-2258-6067; Fax: +82-2-599-3589
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15
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Khanam UA, Rennie DC, Davis K, Lawson JA. Are Dietary Factors Associated with Lung Function in Canadian Adults? CAN J DIET PRACT RES 2020; 81:28-36. [PMID: 31512487 DOI: 10.3148/cjdpr-2019-023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Purpose: The purpose of this study was to explore the impact of dietary factors and biomarkers on lung function among Canadian adults (18-79 years). Methods: Our data source was the Canadian Health Measures Survey Cycle-3, which included 3397 adults. The household and clinic questionnaires and physical measures were used to assess individual dietary factors, modified Mediterranean Diet Scores, and biomarkers. Results: The overall mean percent predicted values for FVC and FEV1 were 97% and 95%, respectively. While somewhat inconsistent between outcomes, higher lung function was associated with bean, grain, milk, fruit, and vegetable consumption, whereas lower lung function was associated with egg and potato consumption. Among the biomarkers, vitamin D, chloride, total serum protein, and red blood cell folate were associated with higher lung function, whereas C-reactive protein and vitamin B12 was associated with lower lung function. Conclusion: Our study provides support for an association between some dietary factors and lung function, though not entirely consistent between a specific dietary factor and the outcomes studied (FVC, FEV1, FVC/FEV1, and FEF25%-75%). The associations between a specific biomarker and lung function were more consistent (i.e., observed with a larger number of lung function outcomes) than were the dietary factors.
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Affiliation(s)
- Ulfat A Khanam
- College of Medicine, University of Saskatchewan, Saskatoon, SK
| | - Donna C Rennie
- College of Nursing, University of Saskatchewan, Saskatoon, SK.,Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, SK
| | - Karen Davis
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, SK
| | - Joshua A Lawson
- College of Medicine, University of Saskatchewan, Saskatoon, SK.,Canadian Centre for Health and Safety in Agriculture, University of Saskatchewan, Saskatoon, SK
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16
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Childhood Respiratory Risk Factor Profiles and Middle-Age Lung Function: A Prospective Cohort Study from the First to Sixth Decade. Ann Am Thorac Soc 2019; 15:1057-1066. [PMID: 29894209 DOI: 10.1513/annalsats.201806-374oc] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
RATIONALE Childhood risk factors for long-term lung health often coexist and their specific patterns may affect subsequent lung function differently. OBJECTIVES To identify childhood risk factor profiles and their influence on lung function and chronic obstructive pulmonary disease (COPD) in middle age, and potential pathways. METHODS Profiles of 11 childhood respiratory risk factors, documented at age 7, were identified in 8,352 participants from the Tasmanian Longitudinal Health Study using latent class analysis. We investigated associations between risk profiles and post-bronchodilator lung function and COPD at age 53, mediation by childhood lung function and adult asthma, and interaction with personal smoking. RESULTS Six risk profiles were identified: 1) unexposed or least exposed (49%); 2) parental smoking (21.5%); 3) allergy (10%); 4) frequent asthma, bronchitis (8.7%); 5) infrequent asthma, bronchitis (8.3%); and 6) frequent asthma, bronchitis, allergy (2.6%). Profile 6 was most strongly associated with lower forced expiratory volume in 1 second (FEV1) (-261; 95% confidence interval, -373 to -148 ml); lower FEV1/forced vital capacity (FVC) (-3.4; -4.8 to -1.9%) and increased COPD risk (odds ratio, 4.9; 2.1 to 11.0) at age 53. The effect of profile 6 on COPD was largely mediated by adult active asthma (62.5%) and reduced childhood lung function (26.5%). Profiles 2 and 4 had smaller adverse effects than profile 6. Notably, the effects of profiles 2 and 6 were synergistically stronger for smokers. CONCLUSIONS Profiles of childhood respiratory risk factors predict middle-age lung function levels and COPD risk. Specifically, children with frequent asthma attacks and allergies, especially if they also become adult smokers, are the most vulnerable group. Targeting active asthma in adulthood (i.e., a dominant mediator) and smoking (i.e., an effect modifier) may block causal pathways and lessen the effect of such established early-life exposures.
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17
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Perret JL, Lodge CJ, Lowe AJ, Johns DP, Thompson BR, Bui DS, Gurrin LC, Matheson MC, McDonald CF, Wood-Baker R, Svanes C, Thomas PS, Giles GG, Chang AB, Abramson MJ, Walters EH, Dharmage SC. Childhood pneumonia, pleurisy and lung function: a cohort study from the first to sixth decade of life. Thorax 2019; 75:28-37. [PMID: 31666389 DOI: 10.1136/thoraxjnl-2019-213389] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 09/16/2019] [Accepted: 09/17/2019] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Adult spirometry following community-acquired childhood pneumonia has variably been reported as showing obstructive or non-obstructive deficits. We analysed associations between doctor-diagnosed childhood pneumonia/pleurisy and more comprehensive lung function in a middle-aged general population cohort born in 1961. METHODS Data were from the prospective population-based Tasmanian Longitudinal Health Study cohort. Analysed lung function was from ages 7 years (prebronchodilator spirometry only, n=7097), 45 years (postbronchodilator spirometry, carbon monoxide transfer factor and static lung volumes, n=1220) and 53 years (postbronchodilator spirometry and transfer factor, n=2485). Parent-recalled histories of doctor-diagnosed childhood pneumonia and/or pleurisy were recorded at age 7. Multivariable linear and logistic regression were used. RESULTS At age 7, compared with no episodes, childhood pneumonia/pleurisy-ever was associated with reduced FEV1:FVC for only those with current asthma (beta-coefficient or change in z-score=-0.20 SD, 95% CI -0.38 to -0.02, p=0.028, p interaction=0.036). At age 45, for all participants, childhood pneumonia/pleurisy-ever was associated with a restrictive pattern: OR 3.02 (1.5 to 6.0), p=0.002 for spirometric restriction (FVC less than the lower limit of normal plus FEV1:FVC greater than the lower limit of normal); total lung capacity z-score -0.26 SD (95% CI -0.38 to -0.13), p<0.001; functional residual capacity -0.16 SD (-0.34 to -0.08), p=0.001; and residual volume -0.18 SD (-0.31 to -0.05), p=0.008. Reduced lung volumes were accompanied by increased carbon monoxide transfer coefficient at both time points (z-score +0.29 SD (0.11 to 0.49), p=0.001 and +0.17 SD (0.04 to 0.29), p=0.008, respectively). DISCUSSION For this community-based population, doctor-diagnosed childhood pneumonia and/or pleurisy were associated with obstructed lung function at age 7 for children who had current asthma symptoms, but with evidence of 'smaller lungs' when in middle age.
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Affiliation(s)
- Jennifer L Perret
- Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia .,Department of Respiratory and Sleep Medicine, Austin Hospital, Melbourne, Victoria, Australia.,Institute for Breathing and Sleep (IBAS), Melbourne, Victoria, Australia
| | - Caroline J Lodge
- Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Adrian J Lowe
- Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - David P Johns
- NHMRC Centre of Research Excellence for Chronic Respiratory Disease, University of Tasmania, Hobart, Tasmania, Australia
| | - Bruce R Thompson
- Department of Respiratory Medicine, The Alfred Hospital, Melbourne, Victoria, Australia.,Department of Medicine, Monash University, Melbourne, Victoria, Australia
| | - Dinh S Bui
- Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Lyle C Gurrin
- Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Melanie C Matheson
- Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
| | - Christine F McDonald
- Department of Respiratory and Sleep Medicine, Austin Hospital, Melbourne, Victoria, Australia.,Institute for Breathing and Sleep (IBAS), Melbourne, Victoria, Australia
| | - Richard Wood-Baker
- NHMRC Centre of Research Excellence for Chronic Respiratory Disease, University of Tasmania, Hobart, Tasmania, Australia
| | - Cecilie Svanes
- Centre for International Health, University of Bergen, Bergen, Norway.,Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
| | - Paul S Thomas
- Prince of Wales' Hospital Clinical School and School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Graham G Giles
- Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia.,Cancer Epidemiology and Intelligence Division, Cancer Council Victoria, Melbourne, Victoria, Australia.,Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - Anne B Chang
- Child Health Division, Menzies School of Health Research, Darwin, Northern Territory, Australia.,Department of Respiratory Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia.,Queensland University of Technology, Brisbane, Queensland, Australia
| | - Michael J Abramson
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - E Haydn Walters
- Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia.,NHMRC Centre of Research Excellence for Chronic Respiratory Disease, University of Tasmania, Hobart, Tasmania, Australia
| | - Shyamali C Dharmage
- Allergy and Lung Health Unit, Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia
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18
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Affiliation(s)
- Dipesh P Gopal
- Centre for Primary Care and Public Health, Barts and The London School of Medicine & Dentistry, London E1 2AB, UK
| | - John Barber
- Research Department of Primary Care and Population Health, University College London Medical School (Royal Free Campus), London NW3 2PF, UK
| | - Daniel Toeg
- Caversham Group Practice, London NW5 2UP, UK
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19
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Loering S, Cameron GJM, Starkey MR, Hansbro PM. Lung development and emerging roles for type 2 immunity. J Pathol 2019; 247:686-696. [PMID: 30506724 DOI: 10.1002/path.5211] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/06/2018] [Accepted: 11/26/2018] [Indexed: 12/12/2022]
Abstract
Lung development is a complex process mediated through the interaction of multiple cell types, factors and mediators. In mice, it starts as early as embryonic day 9 and continues into early adulthood. The process can be separated into five different developmental stages: embryonic, pseudoglandular, canalicular, saccular, and alveolar. Whilst lung bud formation and branching morphogenesis have been studied extensively, the mechanisms of alveolarisation are incompletely understood. Aberrant lung development can lead to deleterious consequences for respiratory health such as bronchopulmonary dysplasia (BPD), a disease primarily affecting preterm neonates, which is characterised by increased pulmonary inflammation and disturbed alveolarisation. While the deleterious effects of type 1-mediated inflammatory responses on lung development have been well established, the role of type 2 responses in postnatal lung development remains poorly understood. Recent studies indicate that type 2-associated immune cells, such as group 2 innate lymphoid cells and alveolar macrophages, are increased in number during postnatal alveolarisation. Here, we present the current state of understanding of the postnatal stages of lung development and the key cell types and mediators known to be involved. We also provide an overview of how stem cells are involved in lung development and regeneration, and the negative influences of respiratory infections. Copyright © 2018 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Svenja Loering
- Priority Research Center's GrowUpWell and Healthy Lungs, School of Biomedical Sciences and Pharmacy, The University of Newcastle and Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Guy J M Cameron
- Priority Research Center's GrowUpWell and Healthy Lungs, School of Biomedical Sciences and Pharmacy, The University of Newcastle and Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Malcolm R Starkey
- Priority Research Center's GrowUpWell and Healthy Lungs, School of Biomedical Sciences and Pharmacy, The University of Newcastle and Hunter Medical Research Institute, Newcastle, New South Wales, Australia
| | - Philip M Hansbro
- Priority Research Center's GrowUpWell and Healthy Lungs, School of Biomedical Sciences and Pharmacy, The University of Newcastle and Hunter Medical Research Institute, Newcastle, New South Wales, Australia.,Center for Inflammation, Centenary Institute and The School of Life Sciences, University of Technology, Sydney, New South Wales, Australia
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Abstract
Pneumonia is a type of acute lower respiratory infection that is common and severe. The outcome of lower respiratory infection is determined by the degrees to which immunity is protective and inflammation is damaging. Intercellular and interorgan signaling networks coordinate these actions to fight infection and protect the tissue. Cells residing in the lung initiate and steer these responses, with additional immunity effectors recruited from the bloodstream. Responses of extrapulmonary tissues, including the liver, bone marrow, and others, are essential to resistance and resilience. Responses in the lung and extrapulmonary organs can also be counterproductive and drive acute and chronic comorbidities after respiratory infection. This review discusses cell-specific and organ-specific roles in the integrated physiological response to acute lung infection, and the mechanisms by which intercellular and interorgan signaling contribute to host defense and healthy respiratory physiology or to acute lung injury, chronic pulmonary disease, and adverse extrapulmonary sequelae. Pneumonia should no longer be perceived as simply an acute infection of the lung. Pneumonia susceptibility reflects ongoing and poorly understood chronic conditions, and pneumonia results in diverse and often persistent deleterious consequences for multiple physiological systems.
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Affiliation(s)
- Lee J Quinton
- Pulmonary Center, Boston University School of Medicine , Boston, Massachusetts
| | - Allan J Walkey
- Pulmonary Center, Boston University School of Medicine , Boston, Massachusetts
| | - Joseph P Mizgerd
- Pulmonary Center, Boston University School of Medicine , Boston, Massachusetts
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21
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Rubin K, Glazer S. The pertussis hypothesis: Bordetella pertussis colonization in the etiology of asthma and diseases of allergic sensitization. Med Hypotheses 2018; 120:101-115. [PMID: 30220328 DOI: 10.1016/j.mehy.2018.08.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Accepted: 08/07/2018] [Indexed: 12/17/2022]
Abstract
Decades of peer reviewed evidence demonstrate that: 1)Bordetellapertussisand pertussis toxin are potent adjuvants, inducing asthma and allergic sensitization in animal models of human disease, 2)Bordetella pertussisoften colonizes the human nasopharynx, and is well documented in highly pertussis-vaccinated populations and 3) in children, a history of whooping cough increases the risk of asthma and allergic sensitization disease. We build on these observations with six case studies and offer a pertussis-based explanation for the rapid rise in allergic disease in former East Germany following the fall of the Berlin Wall; the current asthma, peanut allergy, and anaphylaxis epidemics in the United States; the correlation between the risk of asthma and gross national income per capita by country; the lower risk of asthma and allergy in children raised on farms; and the reduced risk of atopy with increased family size and later sibling birth order. To organize the evidence for the pertussis hypothesis, we apply the Bradford Hill criteria to the association between Bordetella pertussisand asthma and allergicsensitization disease. We propose that, contrary to conventional wisdom that nasopharyngealBordetella pertussiscolonizing infections are harmless, subclinicalBordetella pertussiscolonization is an important cause of asthma and diseases of allergic sensitization.
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22
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Childhood predictors of lung function trajectories and future COPD risk: a prospective cohort study from the first to the sixth decade of life. THE LANCET RESPIRATORY MEDICINE 2018; 6:535-544. [DOI: 10.1016/s2213-2600(18)30100-0] [Citation(s) in RCA: 268] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 02/14/2018] [Accepted: 02/16/2018] [Indexed: 11/19/2022]
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23
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Pavord ID, Beasley R, Agusti A, Anderson GP, Bel E, Brusselle G, Cullinan P, Custovic A, Ducharme FM, Fahy JV, Frey U, Gibson P, Heaney LG, Holt PG, Humbert M, Lloyd CM, Marks G, Martinez FD, Sly PD, von Mutius E, Wenzel S, Zar HJ, Bush A. After asthma: redefining airways diseases. Lancet 2018; 391:350-400. [PMID: 28911920 DOI: 10.1016/s0140-6736(17)30879-6] [Citation(s) in RCA: 652] [Impact Index Per Article: 108.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 02/26/2017] [Accepted: 03/07/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Ian D Pavord
- Respiratory Medicine Unit, Nuffield Department of Medicine and NIHR Oxford Biomedical Research Centre, University of Oxford, UK.
| | - Richard Beasley
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | - Alvar Agusti
- Respiratory Institute, Hospital Clinic, IDIBAPS, University of Barcelona, Barcelona, Spain; CIBER Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Gary P Anderson
- Lung Health Research Centre, University of Melbourne, Melbourne, VIC, Australia
| | - Elisabeth Bel
- Department of Respiratory Medicine, Academic Medical Center, University of Amsterdam, Netherlands
| | - Guy Brusselle
- Department of Respiratory Medicine, Ghent University Hospital, Ghent, Belgium; Departments of Epidemiology and Respiratory Medicine, Erasmus Medical Center, Rotterdam, Netherlands
| | - Paul Cullinan
- National Heart and Lung Institute, Imperial College, London, UK
| | | | - Francine M Ducharme
- Departments of Paediatrics and Social and Preventive Medicine, University of Montreal, Montreal, QC, Canada
| | - John V Fahy
- Cardiovascular Research Institute, and Department of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Urs Frey
- University Children's Hospital Basel, University of Basel, Basel, Switzerland
| | - Peter Gibson
- Department of Respiratory and Sleep Medicine, John Hunter Hospital, Hunter Medical Research Institute, Newcastle, NSW, Australia; Priority Research Centre for Asthma and Respiratory Disease, The University of Newcastle, Newcastle, NSW, Australia
| | - Liam G Heaney
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK
| | - Patrick G Holt
- Telethon Kids Institute, University of Western Australia, Perth, WA, Australia
| | - Marc Humbert
- L'Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Paris, France; Service de Pneumologie, Hôpital Bicêtre, Paris, France; INSERM UMR-S 999, Hôpital Marie Lannelongue, Paris, France
| | - Clare M Lloyd
- National Heart and Lung Institute, Imperial College, London, UK
| | - Guy Marks
- Department of Respiratory Medicine, South Western Sydney Clinical School, University of New South Wales, Sydney, NSW, Australia
| | - Fernando D Martinez
- Asthma and Airway Disease Research Center, The University of Arizona, Tuscon, AZ, USA
| | - Peter D Sly
- Department of Children's Health and Environment, Children's Health Queensland, Brisbane, QLD, Australia; Centre for Children's Health Research, Brisbane, QLD, Australia
| | - Erika von Mutius
- Dr. von Haunersches Kinderspital, Ludwig Maximilians Universität, Munich, Germany
| | - Sally Wenzel
- University of Pittsburgh Asthma Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Heather J Zar
- Department of Paediatrics and Child Health, Red Cross Children's Hospital and Medical Research Council Unit on Child and Adolescent Health, University of Cape Town, Cape Town, South Africa
| | - Andy Bush
- Department of Paediatrics, Imperial College, London, UK; Department of Paediatric Respiratory Medicine, Imperial College, London, UK
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Muthumbi E, Lowe BS, Muyodi C, Getambu E, Gleeson F, Scott JAG. Risk factors for community-acquired pneumonia among adults in Kenya: a case-control study. Pneumonia (Nathan) 2017; 9:17. [PMID: 29209590 PMCID: PMC5702239 DOI: 10.1186/s41479-017-0041-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 10/17/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Pneumonia is a leading cause of morbidity and mortality among adults worldwide; however, the risk factors for community-acquired pneumonia in Africa are not well characterized. METHODS The authors recruited 281 cases of community-acquired pneumonia and 1202 hospital controls among patients aged ≥15 years who attended Kilifi District Hospital/Coast Provincial General Hospital in Kenya between 1994 and 6. Cases were admissions with an acute illness with ≥2 respiratory signs and evidence of consolidation on a chest radiograph. Controls were patients without signs of pneumonia, frequency matched by age, sex and hospital. Risk factors related to socio-demographic factors, drug use, clinical history, contact patterns and exposures to indoor air pollution were investigated by questionnaire, anthropometric measurements and laboratory assays. Associations were evaluated using a hierarchical logistic regression model. RESULTS Pneumonia was associated with human immunodeficiency virus (HIV) infection (Odds Ratio [OR] 2.06, 95% CI 1.44-3.08), anemia (OR 1.91, 1.31-2.74), splenomegaly (OR 2.04, 95% CI 1.14-3.41), recent history of pneumonia (OR 4.65, 95% CI 1.66-12.5), history of pneumonia >2 years previously (OR 17.13, 95% CI 5.01-60.26), coryza in the 2 weeks preceding hospitalization (OR 2.09, 95% CI 1.44-3.03), current smoking (2.19, 95% CI 1.39-3.70), use of khat (OR 3.44, 95% CI 1.72-7.15), use of snuff (OR 2.67, 95% CI 1.35-5.49) and contact with several animal species. Presence of a Bacillus Calmette-Guerin (BCG) scar was associated with protection (OR 0.51, 95% CI 0.32-0.82). The risk factors varied significantly by sex. CONCLUSION Pneumonia in Kenyan adults was associated with global risk factors, such as HIV and smoking, but also with specific local factors like drug use and contact with animals. Intervention strategies should account for sex-specific differences in risk factors.
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Affiliation(s)
- Esther Muthumbi
- KEMRI-Wellcome Trust Research Programme, Center for Geographical Medicine Research Coast, Kilifi, Kenya
| | - Brett S. Lowe
- KEMRI-Wellcome Trust Research Programme, Center for Geographical Medicine Research Coast, Kilifi, Kenya
- Centre for Tropical Medicine & Global Health, University of Oxford, Oxford, UK
| | | | | | - Fergus Gleeson
- Department of Radiology, Churchill Hospital, University of Oxford, Oxford, UK
| | - J. Anthony G. Scott
- KEMRI-Wellcome Trust Research Programme, Center for Geographical Medicine Research Coast, Kilifi, Kenya
- Department of Infectious Disease Epidemiology, London School of Hygiene & Tropical Medicine, London, UK
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26
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van Meel ER, den Dekker HT, Elbert NJ, Jansen PW, Moll HA, Reiss IK, de Jongste JC, Jaddoe VWV, Duijts L. A population-based prospective cohort study examining the influence of early-life respiratory tract infections on school-age lung function and asthma. Thorax 2017. [PMID: 29101282 DOI: 10.1136/thoraxjnl‐2017‐210149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
BACKGROUND Early-life respiratory tract infections could affect airway obstruction and increase asthma risk in later life. However, results from previous studies are inconsistent. OBJECTIVE We examined the associations of early-life respiratory tract infections with lung function and asthma in school-aged children. METHODS This study among 5197 children born between April 2002 and January 2006 was embedded in a population-based prospective cohort study. Information on physician-attended upper and lower respiratory tract infections until age 6 years (categorised into ≤ 3 and >3-6 years) was obtained by annual questionnaires. Spirometry measures and physician-diagnosed asthma were assessed at age 10 years. RESULTS Upper respiratory tract infections were not associated with adverse respiratory outcomes. Compared with children without lower respiratory tract infections ≤3 years, children with lower respiratory tract infections ≤3 years had a lower FEV1, FVC, FEV1:FVC and forced expiratory flow at 75% of FVC (FEF75) (Z-score (95% CI): ranging from -0.22 (-0.31 to -0.12) to -0.12 (-0.21 to -0.03)) and an increased risk of asthma (OR (95% CI): 1.79 (1.19 to 2.59)). Children with lower respiratory tract infections >3-6 years had an increased risk of asthma (3.53 (2.37 to 5.17)) only. Results were not mediated by antibiotic or paracetamol use and not modified by inhalant allergic sensitisation. Cross-lagged modelling showed that results were not bidirectional and independent of preschool wheezing patterns. CONCLUSION Early-life lower respiratory tract infections ≤3 years are most consistently associated with lower lung function and increased risk of asthma in school-aged children.
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Affiliation(s)
- Evelien R van Meel
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Division of Respiratory Medicine and Allergology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Herman T den Dekker
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Division of Respiratory Medicine and Allergology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Niels J Elbert
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Dermatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Pauline W Jansen
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Institute of Psychology, Erasmus University Rotterdam, Rotterdam, Netherlands
| | - Henriëtte A Moll
- Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Irwin K Reiss
- Division of Neonatology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Johan C de Jongste
- Division of Respiratory Medicine and Allergology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Vincent W V Jaddoe
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Liesbeth Duijts
- Division of Respiratory Medicine and Allergology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Division of Neonatology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
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27
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van Meel ER, den Dekker HT, Elbert NJ, Jansen PW, Moll HA, Reiss IK, de Jongste JC, Jaddoe VWV, Duijts L. A population-based prospective cohort study examining the influence of early-life respiratory tract infections on school-age lung function and asthma. Thorax 2017; 73:167-173. [PMID: 29101282 DOI: 10.1136/thoraxjnl-2017-210149] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 09/27/2017] [Accepted: 10/09/2017] [Indexed: 01/18/2023]
Abstract
BACKGROUND Early-life respiratory tract infections could affect airway obstruction and increase asthma risk in later life. However, results from previous studies are inconsistent. OBJECTIVE We examined the associations of early-life respiratory tract infections with lung function and asthma in school-aged children. METHODS This study among 5197 children born between April 2002 and January 2006 was embedded in a population-based prospective cohort study. Information on physician-attended upper and lower respiratory tract infections until age 6 years (categorised into ≤ 3 and >3-6 years) was obtained by annual questionnaires. Spirometry measures and physician-diagnosed asthma were assessed at age 10 years. RESULTS Upper respiratory tract infections were not associated with adverse respiratory outcomes. Compared with children without lower respiratory tract infections ≤3 years, children with lower respiratory tract infections ≤3 years had a lower FEV1, FVC, FEV1:FVC and forced expiratory flow at 75% of FVC (FEF75) (Z-score (95% CI): ranging from -0.22 (-0.31 to -0.12) to -0.12 (-0.21 to -0.03)) and an increased risk of asthma (OR (95% CI): 1.79 (1.19 to 2.59)). Children with lower respiratory tract infections >3-6 years had an increased risk of asthma (3.53 (2.37 to 5.17)) only. Results were not mediated by antibiotic or paracetamol use and not modified by inhalant allergic sensitisation. Cross-lagged modelling showed that results were not bidirectional and independent of preschool wheezing patterns. CONCLUSION Early-life lower respiratory tract infections ≤3 years are most consistently associated with lower lung function and increased risk of asthma in school-aged children.
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Affiliation(s)
- Evelien R van Meel
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Division of Respiratory Medicine and Allergology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Herman T den Dekker
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Division of Respiratory Medicine and Allergology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Niels J Elbert
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Dermatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Pauline W Jansen
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Institute of Psychology, Erasmus University Rotterdam, Rotterdam, Netherlands
| | - Henriëtte A Moll
- Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Irwin K Reiss
- Division of Neonatology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Johan C de Jongste
- Division of Respiratory Medicine and Allergology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Vincent W V Jaddoe
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Liesbeth Duijts
- Division of Respiratory Medicine and Allergology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands.,Division of Neonatology, Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
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28
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Understanding the relationship between lung function and cardiovascular phenotypes in the young. J Hypertens 2017; 35:2171-2174. [DOI: 10.1097/hjh.0000000000001541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Allinson JP, Hardy R, Donaldson GC, Shaheen SO, Kuh D, Wedzicha JA. Combined Impact of Smoking and Early-Life Exposures on Adult Lung Function Trajectories. Am J Respir Crit Care Med 2017; 196:1021-1030. [PMID: 28530117 DOI: 10.1164/rccm.201703-0506oc] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Both adverse early-life exposures and adult smoking can negatively influence adult lung function trajectory, but few studies consider how the impact of early-life exposures may be modified by subsequent smoking. METHODS The Medical Research Council National Survey of Health and Development is a nationally representative cohort, initially of 5,362 individuals, followed since enrollment at birth in March 1946. Using data collected prospectively across life and multilevel modeling, we investigated how the relationships between early-life exposures (infant lower respiratory infection, manual social class, home overcrowding, and pollution exposure) and FEV1 and FVC trajectories between ages 43 and 60-64 years were influenced by smoking behavior. MEASUREMENTS AND MAIN RESULTS Among 2,172 individuals, there were synergistic interactions of smoking with infant respiratory infection (P = 0.04) and early-life home overcrowding (P = 0.009), for FEV1 at 43 years. Within smoker-stratified models, there were FEV1 deficits among ever-smokers associated with infant lower respiratory infection (-108.2 ml; P = 0.001) and home overcrowding (-89.2 ml; P = 0.002), which were not evident among never-smokers (-15.9 ml; P = 0.69 and -13.7 ml; P = 0.70, respectively). FVC modeling, including 1,960 individuals, yielded similar results. FEV1 decline was greater in smokers (P < 0.001), but there was no effect of any early-life exposure on FEV1 decline. Neither smoking nor early-life exposures were associated with FVC decline. CONCLUSIONS Besides accelerating adult FEV1 decline, cigarette smoking also modifies how early-life exposures impact on both midlife FEV1 and FVC. These findings are consistent with smoking impairing pulmonary development during adolescence or early adulthood, thereby preventing catch-up from earlier acquired deficits.
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Affiliation(s)
- James P Allinson
- 1 Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Rebecca Hardy
- 2 Medical Research Council Unit for Lifelong Health and Ageing at UCL, University College London, London, United Kingdom; and
| | - Gavin C Donaldson
- 1 Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Seif O Shaheen
- 3 Centre for Primary Care and Public Health, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Diana Kuh
- 2 Medical Research Council Unit for Lifelong Health and Ageing at UCL, University College London, London, United Kingdom; and
| | - Jadwiga A Wedzicha
- 1 Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
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30
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Oh SS, Du R, Zeiger AM, McGarry ME, Hu D, Thakur N, Pino-Yanes M, Galanter JM, Eng C, Nishimura KK, Huntsman S, Farber HJ, Meade K, Avila P, Serebrisky D, Bibbins-Domingo K, Lenoir MA, Ford JG, Brigino-Buenaventura E, Rodriguez-Cintron W, Thyne SM, Sen S, Rodriguez-Santana JR, Williams K, Kumar R, Burchard EG. Breastfeeding associated with higher lung function in African American youths with asthma. J Asthma 2017; 54:856-865. [PMID: 27929698 PMCID: PMC6130885 DOI: 10.1080/02770903.2016.1266496] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 11/02/2016] [Accepted: 11/26/2016] [Indexed: 01/06/2023]
Abstract
OBJECTIVE In the United States, Puerto Ricans and African Americans have lower prevalence of breastfeeding and worse clinical outcomes for asthma compared with other racial/ethnic groups. We hypothesize that the history of breastfeeding is associated with increased forced expiratory volume in 1 second (FEV1) % predicted and reduced asthma exacerbations in Latino and African American youths with asthma. METHODS As part of the Genes-environments & Admixture in Latino Americans (GALA II) Study and the Study of African Americans, asthma, Genes & Environments (SAGE II), we conducted case-only analyses in children and adolescents aged 8-21 years with asthma from four different racial/ethnic groups: African Americans (n = 426), Mexican Americans (n = 424), mixed/other Latinos (n = 255), and Puerto Ricans (n = 629). We investigated the association between any breastfeeding in infancy and FEV1% predicted using multivariable linear regression; Poisson regression was used to determine the association between breastfeeding and asthma exacerbations. RESULTS Prevalence of breastfeeding was lower in African Americans (59.4%) and Puerto Ricans (54.9%) compared to Mexican Americans (76.2%) and mixed/other Latinos (66.9%; p < 0.001). After adjusting for covariates, breastfeeding was associated with a 3.58% point increase in FEV1% predicted (p = 0.01) and a 21% reduction in asthma exacerbations (p = 0.03) in African Americans only. CONCLUSION Breastfeeding was associated with higher FEV1% predicted in asthma and reduced number of asthma exacerbations in African American youths, calling attention to continued support for breastfeeding.
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Affiliation(s)
- Sam S Oh
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Randal Du
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
- b Department of Pharmacy , University of California San Francisco , San Francisco , CA , USA
| | - Andrew M Zeiger
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Meghan E McGarry
- c Department of Pediatrics , University of California San Francisco , San Francisco , CA , USA
| | - Donglei Hu
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Neeta Thakur
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Maria Pino-Yanes
- d Research Unit , Hospital Universitario NS de Candelaria , Santa Cruz de Tenerife , Spain
| | - Joshua M Galanter
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
- e Department of Bioengineering and Therapeutic Sciences , University of California San Franscisco , San Francisco , CA , USA
| | - Celeste Eng
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | | | - Scott Huntsman
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Harold J Farber
- f Department of Pediatrics , Baylor College of Medicine , Houston , TX , USA
- g Department of Pulmonology , Texas Children's Hospital , Houston , TX , USA
| | - Kelley Meade
- h Department of Primary Care , UCSF Benioff Children's Hospital , San Francisco , CA , USA
| | - Pedro Avila
- i Department of Medicine , Northwestern University , Evanston , IL , USA
| | - Denise Serebrisky
- j Department of Pediatric Pulmonology , Jacobi Medical Center , Bronx , NY , USA
| | - Kirsten Bibbins-Domingo
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
| | - Michael A Lenoir
- k Department of Pediatrics , Bay Area Pediatrics , Oakland , CA , USA
| | - Jean G Ford
- l Department of Epidemiology , Johns Hopkins University Bloomberg School of Public Health , Baltimore , MD , USA
| | | | | | - Shannon M Thyne
- o Department of Medicine , University of California Los Angeles David Geffen School of Medicine , Los Angeles , CA , USA
| | - Saunak Sen
- p Department of Epidemiology and Biostatistics , University of California San Francisco , San Francisco , CA , USA
| | - Jose R Rodriguez-Santana
- q Department of Pediatric Pulmonology and Critical Care , Centro de Neumología Pediátrica , San Juan , Puerto Rico
| | - Keoki Williams
- r Center for Health Policy and Health Services Research, Henry Ford Health System , Detroit , MI , USA
- s Department of Internal Medicine , Henry Ford Health System , Detroit , MI , USA
| | - Rajesh Kumar
- i Department of Medicine , Northwestern University , Evanston , IL , USA
| | - Esteban G Burchard
- a Department of Medicine , University of California San Francisco , San Francisco , CA , USA
- e Department of Bioengineering and Therapeutic Sciences , University of California San Franscisco , San Francisco , CA , USA
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Lothrop N, Hussaini K, Billheimer D, Beamer P. Community-level characteristics and environmental factors of child respiratory illnesses in Southern Arizona. BMC Public Health 2017; 17:516. [PMID: 28545417 PMCID: PMC5445507 DOI: 10.1186/s12889-017-4424-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 05/15/2017] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Lower respiratory illnesses (LRIs) and asthma are common diseases in children <5 years of age. Few studies have investigated the relationships between multiple, home-based social and environmental risk factors and asthma and LRIs in children. Of those that have, none have focused exclusively on children <5 years of age, who are more physiologically vulnerable and spend more time at home compared to older children. Further, no studies have done so at the community level. METHODS We modeled relationships between emergency department visits and hospitalization rates for asthma and LRIs for children <5 years and geographic risk factors, including socio-economic and housing characteristics, ambient air pollution levels, and population density in Maricopa and Pima Counties, Arizona, from 2005 to 2009. We used a generalized linear model with a negative binomial observation distribution and an offset for the population of very young children in each tract. To reduce multicollinearity among predictors, socio-economic characteristics, and ambient air pollutant levels were combined into unit-less indices using the principal components analysis (PCA). Housing characteristics variables did not exhibit moderate-to-high correlations and thus were not included in PCA. Spatial autocorrelation among regression model residuals was assessed with the Global Moran's I test. RESULTS Following the regression analyses, almost all predictors were significantly related to at least one disease outcome. Lower socio-economic status (SES) and reduced population density were associated with asthma hospitalization rates and both LRI outcomes (p values <0.001). After adjusting for differences between counties, Pima County residence was associated with lower asthma and LRI hospitalization rates. No spatial autocorrelation was found among multiple regression model residuals (p values >0.05). CONCLUSIONS Our study revealed complex, multi-factorial associations between predictors and outcomes. Findings indicate that many rural areas with lower SES have distinct factors for childhood respiratory diseases that require further investigation. County-wide differences in maternal characteristics or agricultural land uses (not tested here) may also play a role in Pima County residence protecting against hospitalizations, when compared to Maricopa County. By better understanding this and other relationships, more focused public health interventions at the community level could be developed to reduce and better control these diseases in children <5 years, who are more physiologically vulnerable.
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Affiliation(s)
- Nathan Lothrop
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., PO 245210, Tucson, AZ 85724 USA
| | - Khaleel Hussaini
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., PO 245210, Tucson, AZ 85724 USA
- Biomedical Informatics, College of Medicine, University of Arizona, Tucson, AZ 85724 USA
| | - Dean Billheimer
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., PO 245210, Tucson, AZ 85724 USA
- BIO5 Institute, University of Arizona, Tucson, AZ 85724 USA
| | - Paloma Beamer
- Mel and Enid Zuckerman College of Public Health, University of Arizona, 1295 N. Martin Ave., PO 245210, Tucson, AZ 85724 USA
- BIO5 Institute, University of Arizona, Tucson, AZ 85724 USA
- Arizona Respiratory Center, University of Arizona, Tucson, AZ 85724 USA
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Gray DM, Turkovic L, Willemse L, Visagie A, Vanker A, Stein DJ, Sly PD, Hall GL, Zar HJ. Lung Function in African Infants in the Drakenstein Child Health Study. Impact of Lower Respiratory Tract Illness. Am J Respir Crit Care Med 2017; 195:212-220. [PMID: 27509359 PMCID: PMC5394784 DOI: 10.1164/rccm.201601-0188oc] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 08/09/2016] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Lower respiratory tract illness is a major cause of childhood morbidity and mortality. It is unknown whether infants are predisposed to illness because of impaired lung function or whether respiratory illness reduces lung function. OBJECTIVES To investigate the impact of early life exposures, including lower respiratory tract illness, on lung function during infancy. METHODS Infants enrolled in the Drakenstein child health study had lung function at 6 weeks and 1 year. Testing during quiet natural sleep included tidal breathing, exhaled nitric oxide, and multiple breath washout measures. Risk factors for impaired lung health were collected longitudinally. Lower respiratory tract illness surveillance was performed and any episode investigated. MEASUREMENTS AND MAIN RESULTS Lung function was tested in 648 children at 1 year. One hundred and fifty (29%) infants had a lower respiratory tract illness during the first year of life. Lower respiratory tract illness was independently associated with increased respiratory rate (4%; 95% confidence interval [CI], 1.01-1.08; P = 0.02). Repeat episodes further increased respiratory rate (3%; 95% CI, 1.01-1.05; P = 0.004), decreased tidal volume (-1.7 ml; 95% CI, -3.3 to -0.2; P = 0.03), and increased the lung clearance index (0.13 turnovers; 95% CI, 0.04-0.22; P = 0.006) compared with infants without illness. Tobacco smoke exposure, lung function at 6 weeks, infant growth, and prematurity were other independent predictors of lung function at 1 year. CONCLUSIONS Early life lower respiratory tract illness impairs lung function at 1 year, independent of baseline lung function. Preventing early life lower respiratory tract illness is important to optimize lung function and promote respiratory health in childhood.
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Affiliation(s)
- Diane M. Gray
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital and MRC Unit on Child and Adolescent Health, and
| | - Lidija Turkovic
- Telethon Kids Institute and Centre for Child Health, University of Western Australia, Perth, Australia
| | - Lauren Willemse
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital and MRC Unit on Child and Adolescent Health, and
| | - Ane Visagie
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital and MRC Unit on Child and Adolescent Health, and
| | - Aneesa Vanker
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital and MRC Unit on Child and Adolescent Health, and
| | - Dan J. Stein
- Department of Psychiatry, University of Cape Town, Cape Town, South Africa
| | - Peter D. Sly
- Children’s Lung, Environment and Asthma Research, Child Health Research Centre, University of Queensland and Queensland Children's Medical Research Institute, Brisbane, Australia; and
| | - Graham L. Hall
- Telethon Kids Institute and Centre for Child Health, University of Western Australia, Perth, Australia
- School of Physiotherapy and Exercise Science, Curtin University, Perth, Australia
| | - Heather J. Zar
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital and MRC Unit on Child and Adolescent Health, and
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Highlights of the 11th International Bordetella Symposium: from Basic Biology to Vaccine Development. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2016; 23:842-850. [PMID: 27655886 DOI: 10.1128/cvi.00388-16] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Pertussis is a severe respiratory disease caused by infection with the bacterial pathogen Bordetella pertussis The disease affects individuals of all ages but is particularly severe and sometimes fatal in unvaccinated young infants. Other Bordetella species cause diseases in humans, animals, and birds. Scientific, clinical, public health, vaccine company, and regulatory agency experts on these pathogens and diseases gathered in Buenos Aires, Argentina from 5 to 8 April 2016 for the 11th International Bordetella Symposium to discuss recent advances in our understanding of the biology of these organisms, the diseases they cause, and the development of new vaccines and other strategies to prevent these diseases. Highlights of the meeting included pertussis epidemiology in developing nations, genomic analysis of Bordetella biology and evolution, regulation of virulence factor expression, new model systems to study Bordetella biology and disease, effects of different vaccines on immune responses, maternal immunization as a strategy to prevent newborn disease, and novel vaccine development for pertussis. In addition, the group approved the formation of an International Bordetella Society to promote research and information exchange on bordetellae and to organize future meetings. A new Bordetella.org website will also be developed to facilitate these goals.
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Wark PAB, Hew M, Maltby S, McDonald VM, Gibson PG. Diagnosis and investigation in the severe asthma clinic. Expert Rev Respir Med 2016; 10:491-503. [PMID: 26967545 DOI: 10.1586/17476348.2016.1165096] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Severe asthma is recognised as an important and emerging area of unmet need in asthma. The assessment of severe asthma should include three steps; (1) determining the diagnosis of asthma, including verification that the disease is severe asthma, (2) assessing comorbidities and contributing factors that will impact on clinical severity, as well as (3) assessing asthma phenotypes. These steps recognize the importance of heterogeneity in asthma as a key factor that determines the disease course and increasingly the choice of successful therapy. This assessment should be undertaken systematically and is best done by an expert multidisciplinary team. Here, we will outline the important aspects that should be included in the clinical assessment of the patient in the severe asthma clinic, including diagnosis, clinical history, the assessment of important comorbidities and the key investigations needed to support them.
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Affiliation(s)
- Peter A B Wark
- a Centre of Excellence in Severe Asthma , The University of Newcastle , Newcastle , Australia.,b Priority Research Centre for Healthy Lungs , University of Newcastle , Newcastle , Australia.,c Hunter Medical Research Institute , Newcastle , Australia.,d Department of Respiratory and Sleep Medicine , John Hunter Hospital , Newcastle , Australia
| | - Mark Hew
- e Department of Allergy Immunology and Respiratory Medicine , Alfred Hospital , Melbourne , Victoria , Australia.,f School of Public Health and Preventive Medicine , Monash University , Melbourne , Victoria , Australia
| | - Steven Maltby
- a Centre of Excellence in Severe Asthma , The University of Newcastle , Newcastle , Australia.,b Priority Research Centre for Healthy Lungs , University of Newcastle , Newcastle , Australia.,c Hunter Medical Research Institute , Newcastle , Australia
| | - Vanessa M McDonald
- a Centre of Excellence in Severe Asthma , The University of Newcastle , Newcastle , Australia.,b Priority Research Centre for Healthy Lungs , University of Newcastle , Newcastle , Australia.,c Hunter Medical Research Institute , Newcastle , Australia.,d Department of Respiratory and Sleep Medicine , John Hunter Hospital , Newcastle , Australia
| | - Peter G Gibson
- a Centre of Excellence in Severe Asthma , The University of Newcastle , Newcastle , Australia.,b Priority Research Centre for Healthy Lungs , University of Newcastle , Newcastle , Australia.,c Hunter Medical Research Institute , Newcastle , Australia.,d Department of Respiratory and Sleep Medicine , John Hunter Hospital , Newcastle , Australia
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Godfrey MS, Jankowich MD. The Vital Capacity Is Vital: Epidemiology and Clinical Significance of the Restrictive Spirometry Pattern. Chest 2016; 149:238-51. [PMID: 26356330 DOI: 10.1378/chest.15-1045] [Citation(s) in RCA: 96] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/09/2015] [Accepted: 08/11/2015] [Indexed: 12/20/2022] Open
Abstract
Epidemiologic research has revealed a substantial portion of the general population with abnormal spirometry results that are characterized by decreased FEV1 and FVC but a preserved FEV1/FVC ratio. This restrictive spirometry pattern (RSP) is inconsistently defined in the literature and not well addressed by current guidelines; there is an accumulating body of evidence, however, that RSP is prevalent to a similar degree as airflow obstruction. Genetic and other risk factors for RSP, such as inhalational injuries and early life exposures, continue to be actively described. Although it seems that RSP is closely associated with the metabolic syndrome, diabetes, and systemic inflammation, it is not a simple marker of obesity. RSP is associated with adverse cardiovascular outcomes, as well as mortality, and it may be an underappreciated cause of functional impairments and respiratory symptoms. Improvement in outcomes in this population will require that clinicians have an appreciation for the significance of this spirometry pattern; additional research into the clinical and radiologic phenotype of these subjects is also needed. This article provides an overview of the recent developments in our understanding of this prevalent and highly morbid spirometry pattern.
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Affiliation(s)
- Mark S Godfrey
- Department of Medicine, Warren Alpert Medical School of Brown University, Providence, RI
| | - Matthew D Jankowich
- Department of Medicine, Warren Alpert Medical School of Brown University, Providence, RI; Vascular Research Laboratory, Providence VA Medical Center, Providence, RI.
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Grimwood K, Chang AB. Long-term effects of pneumonia in young children. Pneumonia (Nathan) 2015; 6:101-114. [PMID: 31641584 PMCID: PMC5922344 DOI: 10.15172/pneu.2015.6/671] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Accepted: 09/30/2015] [Indexed: 12/18/2022] Open
Abstract
Each year an estimated 120 million episodes of pneumonia occur in children younger than 5 years of age, resulting in one million deaths globally. Within this age group the lungs are still developing by increasing alveoli numbers and airway dimensions. Pneumonia during this critical developmental period may therefore adversely affect the lung’s structure and function, with increased risk of subsequent chronic lung disease. However, there are few longitudinal studies of pneumonia in otherwise healthy children that extend into adulthood to help address this important question. Birth cohort, longitudinal, case-control and retrospective studies have reported restrictive and obstructive lung function deficits, asthma, bronchiectasis, and chronic obstructive pulmonary disease. In particular, severe hospitalised pneumonia had the greatest risk for long-term sequelae. Most studies, however, were limited by incomplete follow-up, some reliance upon parental recall, risk of diagnostic misclassification, and potential confounders such as nutrition, social deprivation, and pre-existing small airways or lungs. More long-term studies measuring lung function shortly after birth are needed to help disentangle the complex relationships between pneumonia and later chronic lung disease, while also addressing host responses, types of infection, and potential confounding variables. Meanwhile, parents of young children with pneumonia need to be advised about the importance of symptom resolution, post-pneumonia. In addition, paying attention to factors associated with optimising lung growth such as good nutrition, minimising exposure to air pollution, avoiding cigarette smoke, and decreasing the risk of preventable infections through good hygiene and having their children fully vaccinated should be emphasised. Finally, in the developing world and for disadvantaged communities in developed countries, public health policies leading to good quality housing and heating, hygiene, education, and improving socio-economic status are also essential.
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Affiliation(s)
- Keith Grimwood
- 113Menzies Health Institute Queensland, Griffith University, Gold Coast, Queensland Building G40, Gold Coast campus, 4222 Australia.,Department of Infectious Disease and Immunology, and Department of Paediatrics, Gold Coast Health, Gold Coast, Queensland, Australia
| | - Anne B Chang
- 313Queensland Children's Medical Research Institute, Queensland University of Technology, Brisbane, Queensland Australia.,413Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory Australia.,Department of Respiratory and Sleep Medicine, Lady Cilento Hospital, Brisbane, Queensland, Australia
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Hayden LP, Hobbs BD, Cohen RT, Wise RA, Checkley W, Crapo JD, Hersh CP. Childhood pneumonia increases risk for chronic obstructive pulmonary disease: the COPDGene study. Respir Res 2015; 16:115. [PMID: 26392057 PMCID: PMC4578796 DOI: 10.1186/s12931-015-0273-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 09/06/2015] [Indexed: 12/30/2022] Open
Abstract
Background Development of adult respiratory disease is influenced by events in childhood. The impact of childhood pneumonia on chronic obstructive pulmonary disease (COPD) is not well defined. We hypothesize that childhood pneumonia is a risk factor for reduced lung function and COPD in adult smokers. Methods COPD cases and control smokers between 45–80 years old from the United States COPDGene Study were included. Childhood pneumonia was defined by self-report of pneumonia at <16 years. Subjects with lung disease other than COPD or asthma were excluded. Smokers with and without childhood pneumonia were compared on measures of respiratory disease, lung function, and quantitative analysis of chest CT scans. Results Of 10,192 adult smokers, 854 (8.4 %) reported pneumonia in childhood. Childhood pneumonia was associated with COPD (OR 1.40; 95 % CI 1.17-1.66), chronic bronchitis, increased COPD exacerbations, and lower lung function: post-bronchodilator FEV1 (69.1 vs. 77.1 % predicted), FVC (82.7 vs. 87.4 % predicted), FEV1/FVC ratio (0.63 vs. 0.67; p < 0.001 for all comparisons). Childhood pneumonia was associated with increased airway wall thickness on CT, without significant difference in emphysema. Having both pneumonia and asthma in childhood further increased the risk of developing COPD (OR 1.85; 95 % CI 1.10-3.18). Conclusions Children with pneumonia are at increased risk for future smoking-related lung disease including COPD and decreased lung function. This association is supported by airway changes on chest CT scans. Childhood pneumonia may be an important factor in the early origins of COPD, and the combination of pneumonia and asthma in childhood may pose the greatest risk. Clinical trials registration ClinicalTrials.gov, NCT00608764 (Active since January 28, 2008). Electronic supplementary material The online version of this article (doi:10.1186/s12931-015-0273-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lystra P Hayden
- Division of Respiratory Diseases, Boston Children's Hospital, 300 Longwood Ave., Boston, MA, 02115, USA. .,Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Ave., Boston, MA, 02115, USA.
| | - Brian D Hobbs
- Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Ave., Boston, MA, 02115, USA. .,Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, 75 Francis St., Boston, MA, 02115, USA.
| | - Robyn T Cohen
- Department of Pediatrics, Boston University School of Medicine, 72 E Concord St., Boston, MA, 02118, USA.
| | - Robert A Wise
- Division of Pulmonary and Critical Care, Johns Hopkins University School of Medicine, 1830 E. Monument St., Baltimore, MD, 21205, USA.
| | - William Checkley
- Division of Pulmonary and Critical Care, Johns Hopkins University School of Medicine, 1830 E. Monument St., Baltimore, MD, 21205, USA.
| | - James D Crapo
- Department of Medicine, National Jewish Health, 1400 Jackson St., Denver, CO, 80206, USA.
| | - Craig P Hersh
- Channing Division of Network Medicine, Brigham and Women's Hospital, 181 Longwood Ave., Boston, MA, 02115, USA. .,Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, 75 Francis St., Boston, MA, 02115, USA.
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Chan JY, Stern DA, Guerra S, Wright AL, Morgan WJ, Martinez FD. Pneumonia in childhood and impaired lung function in adults: a longitudinal study. Pediatrics 2015; 135:607-16. [PMID: 25733757 PMCID: PMC4379462 DOI: 10.1542/peds.2014-3060] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/08/2015] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Diminished lung function and increased prevalence of asthma have been reported in children with a history of early lower respiratory illnesses (LRIs), including pneumonia. Whether these associations persist up to adulthood has not been established. METHODS As part of the prospective Tucson Children's Respiratory Study, LRIs during the first 3 years of life were ascertained by pediatricians. Spirometry was performed at ages 11, 16, 22, and 26 years. The occurrence of asthma/wheeze during the previous year was ascertained at ages 11, 13, 16, 18, 22, 24, 26, and 29 years. Longitudinal random effects models and generalized estimating equations were used to assess the relation of LRIs to lung function and asthma. RESULTS Compared with participants without early-life LRIs, those with pneumonia had the most severe subsequent lung function impairment, with mean ± SE deficits of -3.9% ± 0.9% (P < .001) and -2.5% ± 0.8% (P = .001) for pre- and post-bronchodilator FEV1:FVC ratio from age 11 to 26 years, respectively. Pneumonia was associated with increased risk for asthma (odds ratio [OR]: 1.95; 95% confidence interval [CI]: 1.11-3.44) and wheeze (OR: 1.94; 95% CI: 1.28-2.95) over the same age range. Early non-pneumonia LRIs were associated with mildly impaired pre-bronchodilator FEV1 (-62.8 ± 27.9 mL, P = .024) and FEV1:FVC ratio (-1.1 ± 0.5%, P = .018), and wheeze (OR: 1.37; 95% CI: 1.09-1.72). CONCLUSIONS Early pneumonia is associated with asthma and impaired airway function, which is partially reversible with bronchodilators and persists into adulthood. Early pneumonia may be a major risk factor for adult chronic obstructive pulmonary disease.
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Affiliation(s)
- Johnny Y.C. Chan
- Department of Pediatrics, Kwong Wah Hospital, Hospital Authority, Kowloon, Hong Kong; and,Arizona Respiratory Center, University of Arizona, Tucson, Arizona
| | - Debra A. Stern
- Arizona Respiratory Center, University of Arizona, Tucson, Arizona
| | - Stefano Guerra
- Arizona Respiratory Center, University of Arizona, Tucson, Arizona
| | - Anne L. Wright
- Arizona Respiratory Center, University of Arizona, Tucson, Arizona
| | - Wayne J. Morgan
- Arizona Respiratory Center, University of Arizona, Tucson, Arizona
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Vasilopoulos T, Kremen WS, Grant MD, Panizzon MS, Xian H, Toomey R, Lyons MJ, Jacobson KC, Franz CE. Individual differences in cognitive ability at age 20 predict pulmonary function 35 years later. J Epidemiol Community Health 2015; 69:261-5. [PMID: 25273357 PMCID: PMC4756634 DOI: 10.1136/jech-2014-204143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Poor pulmonary function is associated with mortality and age-related diseases, and can affect cognitive performance. However, extant longitudinal studies indicate that early cognitive ability also affects later pulmonary function. Despite the multifaceted nature of pulmonary function, most longitudinal studies were limited to a single index of pulmonary function: forced expiratory volume in 1 s (FEV1). In this study, we examined whether early adult cognitive ability predicted five different indices of pulmonary function in mid-life. METHODS Mixed modelling tested the association between young adult general cognitive ability (mean age=20), measured by the Armed Forces Qualification Test (AFQT), and mid-life pulmonary function (mean age=55), in 1019 men from the Vietnam Era Twin Study of Aging. Pulmonary function was indexed by per cent predicted values for forced vital capacity (FVC%p), FEV1%p, maximum forced expiratory flow (FEFmax%p), and maximal voluntary ventilation (MVV%p), and by the ratio of FEV1 to FVC (FEV1/FVC), an index of lung obstruction. RESULTS After adjusting for smoking, pulmonary disease, occupation, income and education, age 20 AFQT was significantly (p<0.05) associated with mid-life FVC%p (β=0.10), FEV1%p (β=0.13), FEFmax%p (β=0.13), and MVV%p (β=0.13), but was not significantly associated with FEV1/FVC (β=0.03, p=0.34). CONCLUSIONS Early adult cognitive ability is a predictor of multiple indices of aging-related pulmonary function 35 years later, including lung volume, airflow and ventilator capacity. Cognitive deficits associated with impaired aging-related lung function may, thus, be partly pre-existing. However, results also highlight that early life risk factors may be differentially related to different metrics of later-life pulmonary health.
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Affiliation(s)
- Terrie Vasilopoulos
- Department of Anesthesiology, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - William S Kremen
- Department of Psychiatry, University of California, San Diego, La Jolla, California, USA
- Center for Excellence for Stress and Mental Health, VA San Diego Healthcare System, La Jolla, California, USA
| | - Michael D Grant
- Department of Psychology, Ohio University, Athens, Ohio, USA
| | - Matthew S Panizzon
- Department of Psychiatry, University of California, San Diego, La Jolla, California, USA
| | - Hong Xian
- Department of Biostatistics, Saint Louis University, St. Louis, Missouri, USA
- VA St. Louis Healthcare System, St. Louis, Missouri, USA
| | - Rosemary Toomey
- Department of Psychology, Boston University, Boston, Massachusetts, USA
| | - Michael J Lyons
- Department of Psychology, Boston University, Boston, Massachusetts, USA
| | - Kristen C Jacobson
- Department of Psychiatry & Behavioral Neuroscience, University of Chicago, Chicago, Illinois, USA
| | - Carol E Franz
- Department of Psychiatry, University of California, San Diego, La Jolla, California, USA
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Honkinen M, Lahti E, Svedström E, Jartti T, Virkki R, Peltola V, Ruuskanen O. Long-term recovery after parapneumonic empyema in children. Pediatr Pulmonol 2014; 49:1020-7. [PMID: 24339218 DOI: 10.1002/ppul.22966] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 11/03/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND The incidence of parapneumonic empyema in children has increased worldwide, but the long-term anatomical and functional consequences in the lungs after empyema are not known. METHODS We investigated the long-term outcome of childhood empyema in 26 patients by physical examination, chest radiograph and magnetic resonance image (MRI) of the lungs, and pulmonary function tests. RESULTS At follow-up 3-19 years (mean 8 years) after empyema, all patients had normal findings in the physical examination. Spirometry was normal in 80% of patients, and evidence of obstructive airway disease was detected in 16%. Thirty-six percent of patients had abnormal findings in the chest radiograph and 92% in the MRI of the lungs. In six patients, the MRI revealed significant pleural scarring (extension longer than 1 cm). Thirteen patients (50%) reported persistent respiratory symptoms, such as impaired tolerance of physical activity or prolonged cough after a common cold. During the follow-up four patients suffered a second pneumonia. CONCLUSIONS The long-term recovery of children with parapneumonic empyema is good, since most patients subsequently have normal lung function, chest radiograph, and clinical recovery. Half of the patients reported subjective respiratory symptoms and most patients had minor lung abnormalities, mostly pleural scars, detected in the MRI many years after empyema. However, as long-term impairment of lung function was rarely found, the clinical significance of the anatomical residues seen in the lung MRI seems to be minor.
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Affiliation(s)
- Maria Honkinen
- Department of Pediatrics, Turku University Hospital, Turku, Finland
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Cupul-Uicab LA, Terrazas-Medina EA, Hernández-Ávila M, Longnecker MP. Prenatal exposure to p,p'-DDE and p,p'-DDT in relation to lower respiratory tract infections in boys from a highly exposed area of Mexico. ENVIRONMENTAL RESEARCH 2014; 132:19-23. [PMID: 24742723 PMCID: PMC4797060 DOI: 10.1016/j.envres.2014.03.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 03/04/2014] [Accepted: 03/18/2014] [Indexed: 05/30/2023]
Abstract
BACKGROUND Prenatal exposure to 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p'-DDE), the major breakdown product of DDT, has been associated with recurrent lower respiratory tract infections (LRTIs) in infants. However, epidemiological investigations are limited. OBJECTIVE To assess the association of prenatal exposure to p,p'-DDE and p,p'-DDT with the occurrence of LRTI in boys from Chiapas, a highly exposed area of Mexico. METHODS We analyzed data from 747 singleton boys whose prenatal exposure to p,p'-DDE and p,p'-DDT was determined in maternal serum drawn at delivery (2002-2003). LRTI (i.e., pneumonia, bronchiolitis, and other illness of the bronchi) experienced by the children were reported by their mothers during in-person interviews. The median age of the children when they were last seen was 21.4 months (quartiles 19.1 and 25.3 months). RESULTS Median exposure to p,p'-DDE in this population was higher (2.7 µg/g lipid) than recent U.S. levels (0.20 µg/g). There were 0.19 episodes of LRTI per child-year. After adjusting for potential confounders, children in the highest category of p,p'-DDE (>9.00 µg/g) exposure compared to those in the lowest (≤ 3.00 µg/g) had an adjusted incidence rate ratio (aIRR) of LRTI of 0.77 (95% confidence interval [CI], 0.41-1.46). The corresponding aIRR for p,p'-DDT (≥ 2.00 µg/g compared to ≤ 0.25 µg/g) was 0.65 (95% CI: 0.30-1.39). CONCLUSION An association of prenatal exposure to p,p'-DDE and p,p'-DDT with LRTI during childhood was not supported in this population with relatively high levels of exposure.
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Affiliation(s)
- Lea A Cupul-Uicab
- Center for Population Health Research, National Institute of Public Health, Cuernavaca 62100, Morelos, Mexico; Epidemiology Branch, National Institute of Environmental Health Sciences, NIH/DHHS/USA, Research Triangle Park, NC 27709, USA.
| | - Efraín A Terrazas-Medina
- Center for Population Health Research, National Institute of Public Health, Cuernavaca 62100, Morelos, Mexico
| | - Mauricio Hernández-Ávila
- Center for Population Health Research, National Institute of Public Health, Cuernavaca 62100, Morelos, Mexico
| | - Matthew P Longnecker
- Epidemiology Branch, National Institute of Environmental Health Sciences, NIH/DHHS/USA, Research Triangle Park, NC 27709, USA
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Damera G, Panettieri RA. Irreversible airway obstruction in asthma: what we lose, we lose early. Allergy Asthma Proc 2014; 35:111-8. [PMID: 24717787 DOI: 10.2500/aap.2013.34.3724] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Asthma, a syndrome manifested by airway inflammation and obstruction, globally contributes significantly to morbidity and mortality. Although current evidence identifies risk factors that evoke asthma, critical questions concerning susceptibility factors that induce severe persistent disease remain unclear. Early onset of asthma decreases lung function that may be unrecognized until later in adulthood when patients experience dyspnea on exertion and attenuated quality of life. This review highlights current evidence in predicting the onset of asthma and identifying those patients at greatest risk for severe persistent disease.
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Affiliation(s)
- Gautam Damera
- Translational Medicine, Respiratory, Inflammation, and Autoimmunity Group, MedImmune, LLC, Gaithersburg, Maryland, USA
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44
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The management of paediatric allergy: not everybody's cup of tea--10-11th February 2012. Curr Opin Allergy Clin Immunol 2013; 13 Suppl 1:S1-50. [PMID: 23377496 DOI: 10.1097/aci.0b013e32835e8b94] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Lower respiratory tract infection in the first year of life is associated with worse lung function in adult life: prospective results from the Barry Caerphilly Growth study. Ann Epidemiol 2013; 23:422-7. [DOI: 10.1016/j.annepidem.2013.05.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 05/16/2013] [Accepted: 05/19/2013] [Indexed: 11/24/2022]
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46
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Strippoli MPF, Kuehni CE, Dogaru CM, Spycher BD, McNally T, Silverman M, Beardsmore CS. Etiology of ethnic differences in childhood spirometry. Pediatrics 2013; 131:e1842-9. [PMID: 23713103 DOI: 10.1542/peds.2012-3003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVES Age- and height-adjusted spirometric lung function of South Asian children is lower than those of white children. It is unclear whether this is purely genetic, or partly explained by the environment. In this study, we assessed whether cultural factors, socioeconomic status, intrauterine growth, environmental exposures, or a family and personal history of wheeze contribute to explaining the ethnic differences in spirometric lung function. METHODS We studied children aged 9 to 14 years from a population-based cohort, including 1088 white children and 275 UK-born South Asians. Log-transformed spirometric data were analyzed using multiple linear regressions, adjusting for anthropometric factors. Five different additional models adjusted for (1) cultural factors, (2) indicators of socioeconomic status, (3) perinatal data reflecting intrauterine growth, (4) environmental exposures, and (5) personal and family history of wheeze. RESULTS Height- and gender-adjusted forced vital capacity (FVC) and forced expired volume in 1 second (FEV1) were lower in South Asian than white children (relative difference -11% and -9% respectively, P < .001), but PEF and FEF50 were similar (P ≥ .5). FEV1/FVC was higher in South Asians (1.8%, P < .001). These differences remained largely unchanged in all 5 alternative models. CONCLUSIONS Our study confirmed important differences in lung volumes between South Asian and white children. These were not attenuated after adjustment for cultural and socioeconomic factors and intrauterine growth, neither were they explained by differences in environmental exposures nor a personal or family history of wheeze. This suggests that differences in lung function may be mainly genetic in origin. The implication is that ethnicity-specific predicted values remain important specifically for South Asian children.
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Affiliation(s)
- Michael S Niederman
- Department of Medicine, State University of New York at Stony Brook, Winthrop-University Hospital, Mineola, NY 11501, USA.
| | - Leonard R Krilov
- Department of Pediatrics, State University of New York at Stony Brook, Winthrop-University Hospital, Mineola, NY 11501, USA
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48
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Walker CLF, Rudan I, Liu L, Nair H, Theodoratou E, Bhutta ZA, O'Brien KL, Campbell H, Black RE. Global burden of childhood pneumonia and diarrhoea. Lancet 2013; 381:1405-1416. [PMID: 23582727 PMCID: PMC7159282 DOI: 10.1016/s0140-6736(13)60222-6] [Citation(s) in RCA: 1413] [Impact Index Per Article: 128.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Diarrhoea and pneumonia are the leading infectious causes of childhood morbidity and mortality. We comprehensively reviewed the epidemiology of childhood diarrhoea and pneumonia in 2010-11 to inform the planning of integrated control programmes for both illnesses. We estimated that, in 2010, there were 1·731 billion episodes of diarrhoea (36 million of which progressed to severe episodes) and 120 million episodes of pneumonia (14 million of which progressed to severe episodes) in children younger than 5 years. We estimated that, in 2011, 700,000 episodes of diarrhoea and 1·3 million of pneumonia led to death. A high proportion of deaths occurs in the first 2 years of life in both diseases--72% for diarrhoea and 81% for pneumonia. The epidemiology of childhood diarrhoea and that of pneumonia overlap, which might be partly because of shared risk factors, such as undernutrition, suboptimum breastfeeding, and zinc deficiency. Rotavirus is the most common cause of vaccine-preventable severe diarrhoea (associated with 28% of cases), and Streptococcus pneumoniae (18·3%) of vaccine-preventable severe pneumonia. Morbidity and mortality from childhood pneumonia and diarrhoea are falling, but action is needed globally and at country level to accelerate the reduction.
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Affiliation(s)
- Christa L Fischer Walker
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Igor Rudan
- Centre for Population Health Sciences and Global Health Academy, University of Edinburgh Medical School, Edinburgh, UK
| | - Li Liu
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Harish Nair
- Centre for Population Health Sciences and Global Health Academy, University of Edinburgh Medical School, Edinburgh, UK; Public Health Foundation of India, New Delhi, India
| | - Evropi Theodoratou
- Centre for Population Health Sciences and Global Health Academy, University of Edinburgh Medical School, Edinburgh, UK
| | | | - Katherine L O'Brien
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Harry Campbell
- Centre for Population Health Sciences and Global Health Academy, University of Edinburgh Medical School, Edinburgh, UK
| | - Robert E Black
- Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
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Jedrychowski WA, Perera FP, Spengler JD, Mroz E, Stigter L, Flak E, Majewska R, Klimaszewska-Rembiasz M, Jacek R. Intrauterine exposure to fine particulate matter as a risk factor for increased susceptibility to acute broncho-pulmonary infections in early childhood. Int J Hyg Environ Health 2013; 216:395-401. [PMID: 23333083 DOI: 10.1016/j.ijheh.2012.12.014] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 11/06/2012] [Accepted: 12/20/2012] [Indexed: 11/24/2022]
Abstract
Over the last decades many epidemiologic studies considered the morbidity patterns for respiratory diseases and lung function of children in the context of ambient air pollution usually measured in the postnatal period. The main purpose of this study is to assess the impact of prenatal exposure to fine particulate matter (PM2.5) on the recurrent broncho-pulmonary infections in early childhood. The study included 214 children who had measurements of personal prenatal PM2.5 exposure and regularly collected data on the occurrence of acute bronchitis and pneumonia diagnosed by a physician from birth over the seven-year follow-up. The effect of prenatal exposure to PM2.5 was adjusted in the multivariable logistic models for potential confounders, such as prenatal and postnatal ETS (environmental tobacco smoke), city residence area as a proxy of postnatal urban exposure, children's sensitization to domestic aeroallergens, and asthma. In the subgroup of children with available PM2.5 indoor levels, the effect of prenatal exposure was additionally adjusted for indoor exposure as well. The adjusted odds ratio (OR) for incidence of recurrent broncho-pulmonary infections (five or more spells of bronchitis and/or pneumonia) recorded in the follow-up significantly correlated in a dose-response manner with the prenatal PM2.5 level (OR=2.44, 95%CI: 1.12-5.36). In conclusion, the study suggests that prenatal exposure to PM2.5 increases susceptibility to respiratory infections and may program respiratory morbidity in early childhood. The study also provides evidence that the target value of 20μg/m(3) for the 24-h mean level of PM2.5 protects unborn babies better than earlier established EPA guidelines.
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Affiliation(s)
- Wiesław A Jedrychowski
- Chair of Epidemiology and Preventive Medicine, Jagiellonian University Medical College in Krakow, Poland.
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Hull J. Asthma--it hasn't gone away. Clin Med (Lond) 2012; 12:453-5. [PMID: 23101147 PMCID: PMC4953769 DOI: 10.7861/clinmedicine.12-5-453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Asthma most definitely hasn't gone away. This article provides a review of the Royal College of Physician's conference in March 2012, which progressed attendees' understanding of both the basic science and clinical aspects of asthma care. The article highlights key clinical messages from the programme for general physicians--e.g., how best to approach the assessment of patients with severe asthma.
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Affiliation(s)
- James Hull
- Department of Respiratory Medicine, Royal Brompton Hospital, London.
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