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Dapas M, Thompson EE, Wentworth-Sheilds W, Clay S, Visness CM, Calatroni A, Sordillo JE, Gold DR, Wood RA, Makhija M, Khurana Hershey GK, Sherenian MG, Gruchalla RS, Gill MA, Liu AH, Kim H, Kattan M, Bacharier LB, Rastogi D, Altman MC, Busse WW, Becker PM, Nicolae D, O’Connor GT, Gern JE, Jackson DJ, Ober C. Multi-omic association study identifies DNA methylation-mediated genotype and smoking exposure effects on lung function in children living in urban settings. PLoS Genet 2023; 19:e1010594. [PMID: 36638096 PMCID: PMC9879483 DOI: 10.1371/journal.pgen.1010594] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 01/26/2023] [Accepted: 12/23/2022] [Indexed: 01/14/2023] Open
Abstract
Impaired lung function in early life is associated with the subsequent development of chronic respiratory disease. Most genetic associations with lung function have been identified in adults of European descent and therefore may not represent those most relevant to pediatric populations and populations of different ancestries. In this study, we performed genome-wide association analyses of lung function in a multiethnic cohort of children (n = 1,035) living in low-income urban neighborhoods. We identified one novel locus at the TDRD9 gene in chromosome 14q32.33 associated with percent predicted forced expiratory volume in one second (FEV1) (p = 2.4x10-9; βz = -0.31, 95% CI = -0.41- -0.21). Mendelian randomization and mediation analyses revealed that this genetic effect on FEV1 was partially mediated by DNA methylation levels at this locus in airway epithelial cells, which were also associated with environmental tobacco smoke exposure (p = 0.015). Promoter-enhancer interactions in airway epithelial cells revealed chromatin interaction loops between FEV1-associated variants in TDRD9 and the promoter region of the PPP1R13B gene, a stimulator of p53-mediated apoptosis. Expression of PPP1R13B in airway epithelial cells was significantly associated the FEV1 risk alleles (p = 1.3x10-5; β = 0.12, 95% CI = 0.06-0.17). These combined results highlight a potential novel mechanism for reduced lung function in urban youth resulting from both genetics and smoking exposure.
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Affiliation(s)
- Matthew Dapas
- Department of Human Genetics, University of Chicago, Chicago Illinois, United States of America
| | - Emma E. Thompson
- Department of Human Genetics, University of Chicago, Chicago Illinois, United States of America
| | | | - Selene Clay
- Department of Human Genetics, University of Chicago, Chicago Illinois, United States of America
| | | | | | - Joanne E. Sordillo
- Department of Population Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Diane R. Gold
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Robert A. Wood
- Department of Pediatrics, Johns Hopkins University Medical Center, Baltimore, Maryland, United States of America
| | - Melanie Makhija
- Division of Allergy and Immunology, Ann & Robert H. Lurie Children’s Hospital, Chicago, Illinois, United States of America
| | - Gurjit K. Khurana Hershey
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Division of Asthma Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Michael G. Sherenian
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, United States of America
- Division of Asthma Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Rebecca S. Gruchalla
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Michelle A. Gill
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Andrew H. Liu
- Department of Allergy and Immunology, Children’s Hospital Colorado, University of Colorado School of Medicine, Aurora, Colorado, United States of America
| | - Haejin Kim
- Department of Medicine, Henry Ford Health System, Detroit, Michigan, United States of America
| | - Meyer Kattan
- Columbia University College of Physicians and Surgeons, New York, New York, United States of America
| | - Leonard B. Bacharier
- Monroe Carell Jr. Children’s Hospital at Vanderbilt University Medical Center, Nashville, Tennessee, United States of America
| | - Deepa Rastogi
- Children’s National Health System, Washington, District of Columbia, United States of America
| | - Matthew C. Altman
- Department of Allergy and Infectious Diseases, University of Washington, Seattle, Washington, United States of America
| | - William W. Busse
- Department of Pediatrics and Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Patrice M. Becker
- National Institute of Allergy and Infectious Diseases, Bethesda, Maryland, United States of America
| | - Dan Nicolae
- Department of Statistics, University of Chicago, Chicago, Illinois, United States of America
| | - George T. O’Connor
- Pulmonary Center, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - James E. Gern
- Department of Pediatrics and Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Daniel J. Jackson
- Department of Pediatrics and Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Carole Ober
- Department of Human Genetics, University of Chicago, Chicago Illinois, United States of America
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Hallas HW, Chawes BL, Arianto L, Rasmussen MA, Kunøe A, Stokholm J, Bønnelykke K, Bisgaard H. Children with Asthma Have Fixed Airway Obstruction through Childhood Unaffected by Exacerbations. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2019; 8:1263-1271.e3. [PMID: 31707066 DOI: 10.1016/j.jaip.2019.10.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 09/23/2019] [Accepted: 10/25/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND Children with asthma may have a disease course with or without exacerbations, but the relationship between exacerbations and lung function development is poorly understood. OBJECTIVE To compare lung function trajectories from birth till adolescence in asthmatic children with and without exacerbations. METHODS Children with asthma from the Copenhagen Prospective Studies on Asthma in Childhood2000 (COPSAC2000) birth cohort had lung function and bronchial reactivity assessed repeatedly from 1 month to 13 years. Exacerbations were diagnosed at the COPSAC clinic defined as symptoms requiring hospitalization, oral or high-dose inhaled corticosteroid treatment. Mixed models were applied to analyze lung function trajectories. RESULTS Children with asthma with exacerbations (N = 50) had a trajectory of increased, fixed airway obstruction compared with children without exacerbations (N = 47): z-score difference in airway resistance (sRawz) (95% confidence interval [CI]): +0.34 (+0.03; +0.66), P = .03, and maximal mid-expiratory flow (MMEFz): -0.41 (-0.69; -0.13), P = .004, but no differences in forced expiratory volume (FEVz): -0.14 (-0.41; +0.13), P = .29, or bronchial reactivity to methacholine (PDz): +0.08 (-0.26; +0.42), P = .65. This did not change comparing lung function trajectories before and after exacerbations: z-score difference (95% CI) sRawz: -0.04 (-0.35; 0.27), P = .80; MMEFz: 0.01 (-0.02; 0.04), P = .55; FEVz: 0.02 (-0.02; 0.05), P = .42; and PDz: -0.01 (-0.06; 0.05), P = .88. CONCLUSION Children with asthma with exacerbations compared with children with asthma without exacerbations are characterized by increased airway obstruction since infancy through childhood. The airway obstruction is a fixed trajectory without progression due to exacerbations, suggesting that exacerbations are a consequence rather than a cause of diminished airway caliber in childhood.
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Affiliation(s)
- Henrik W Hallas
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Bo L Chawes
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Lambang Arianto
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Morten A Rasmussen
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Asja Kunøe
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Jakob Stokholm
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Klaus Bønnelykke
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Hans Bisgaard
- COPSAC, Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark.
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Henry AP, Probert K, Stewart CE, Thakker D, Bhaker S, Azimi S, Hall IP, Sayers I. Defining a role for lung function associated gene GSTCD in cell homeostasis. Respir Res 2019; 20:172. [PMID: 31370853 PMCID: PMC6676530 DOI: 10.1186/s12931-019-1146-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 07/25/2019] [Indexed: 12/11/2022] Open
Abstract
Genome wide association (GWA) studies have reproducibly identified signals on chromosome 4q24 associated with lung function and COPD. GSTCD (Glutathione S-transferase C-terminal domain containing) represents a candidate causal gene in this locus, however little is currently known about the function of this protein. We set out to further our understanding of the role of GSTCD in cell functions and homeostasis using multiple molecular and cellular approaches in airway relevant cells. Recombinant expression of human GSTCD in conjunction with a GST activity assay did not identify any enzymatic activity for two GSTCD isoforms questioning the assignment of this protein to this family of enzymes. Protein structure analyses identified a potential methyltransferase domain contained within GSTCD, with these enzymes linked to cell viability and apoptosis. Targeted knockdown (siRNA) of GSTCD in bronchial epithelial cells identified a role for GSTCD in cell viability as proliferation rates were not altered. To provide greater insight we completed transcriptomic analyses on cells with GSTCD expression knocked down and identified several differentially expressed genes including those implicated in airway biology; fibrosis e.g. TGFBR1 and inflammation e.g. IL6R. Pathway based transcriptomic analyses identified an over-representation of genes related to adipogenesis which may suggest additional functions for GSTCD. These findings identify potential additional functions for GSTCD in the context of airway biology beyond the hypothesised GST activity and warrant further investigation.
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Affiliation(s)
- Amanda P Henry
- Division of Respiratory Medicine, National Institute for Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK.
| | - Kelly Probert
- Division of Respiratory Medicine, National Institute for Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK
| | - Ceri E Stewart
- Division of Respiratory Medicine, National Institute for Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK
| | - Dhruma Thakker
- Division of Respiratory Medicine, National Institute for Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK
| | - Sangita Bhaker
- Division of Respiratory Medicine, National Institute for Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK
| | - Sheyda Azimi
- Division of Respiratory Medicine, National Institute for Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK
| | - Ian P Hall
- Division of Respiratory Medicine, National Institute for Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK
| | - Ian Sayers
- Division of Respiratory Medicine, National Institute for Health Research, Nottingham Biomedical Research Centre, University of Nottingham, Nottingham, UK
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Abstract
Asthmatic adults with lower lung function have been described as having had this worse condition early in life. Lung function is reduced in children with persistent asthma and continues low throughout adult life. The challenge is to know if impaired lung function is a risk factor of asthma, as a consequence of special congenital characteristics of the airways, or whether asthmatic patients suffer a loss in lung function as early as 9 years of age as a consequence of very precocious remodeling of the airways. The loss is so early in life that it is probably a congenital characteristic, however there is not a cut-off point with clinical interest to predict risk of asthma later in life. There are contradictory results regarding whether asthmatic children lose lung function as a consequence of the airway remodeling by the illness itself. This aspect seemed to be shown for children at risk-the offspring of asthmatic mothers. The early BHR seems to be very frequent even in healthy infants, but is probably not a risk factor for asthma years later; except in the offspring of asthmatic mothers in which it has been shown. There are still many uncertainties in this field; so, more research is needed in order to better understand the pathophysiology of asthma, the early risk factors and to design new therapeutic targets and early interventions to change the natural history of the disease.
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Affiliation(s)
- Manuel Sánchez-Solís
- Department of Pediatric, Hospital Universitario Virgen de la Arrixaca, Murcia, Spain.,Biomedical Research Institute of Murcia (IMIB), Palmar, Spain.,Department of Surgery, Pediatric, Obstetric and Gynaecology, University of Murcia, Murcia, Spain
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Shagiwal SS, den Dekker HT, de Jongste JC, Brusselle GG, Jaddoe VWV, Felix JF, Duijts L. Influence of genetic variants on childhood lung function - The Generation R Study. Pediatr Allergy Immunol 2018; 29:589-595. [PMID: 29882296 DOI: 10.1111/pai.12931] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/09/2018] [Indexed: 11/28/2022]
Abstract
Genetic variants associated with adult lung function could already exert the effects on childhood lung function. We aimed to examine the associations of adult lung function-related genetic variants with childhood lung function and asthma, and whether these associations were modified by atopic predisposition, tobacco smoke exposure, or early growth characteristics. In a population-based prospective cohort study among 3347 children, we selected 7 and 20 single nucleotide polymorphisms (SNPs) associated with adult forced expiratory volume in 1 second (FEV1 ) and FEV1 /forced vital capacity (FEV1 /FVC), respectively. Weighted genetic risk scores (GRSs) for FEV1 and FEV1 /FVC were constructed. At age 10, FEV1 , FVC, FEV1 /FVC, forced expiratory flow between 25% and 75% (FEF25-75 ), and forced expiratory flow at 75% (FEF75 ) of FVC were measured, and information on asthma was obtained by parental-reported questionnaires. The FEV1 -GRS was associated with lower childhood FEV1 , FEV1 /FVC, and FEF75 (Z-score (95% CI): -0.03 (-0.05, -0.01), -0.03 (-0.05, -0.01), and -0.04 (-0.05, -0.01), respectively, per additional risk allele). The FEV1 /FVC-GRS was associated with lower childhood FEV1 /FVC and FEF75 (Z-score (95% CI): -0.04 (-0.05, -0.03) and -0.03 (-0.05, -0.02), respectively, per additional risk allele). Effect estimates of FEV1 -GRS with FEF25-75 , FEV1 , FEF75 , and FVC, and of FEV1 /FVC-GRS with FEV1 /FVC and FEF25-75 were stronger among children exposed to non-atopic mothers, smoking during pregnancy or in childhood, or those born with a lower birthweight, respectively (P-values for interaction < .05). Genetic risk scores were not associated with asthma. Adult lung function-related genetic variants were associated with childhood lung function. Maternal atopy, smoking during pregnancy or in childhood, and birthweight modified the observed effects.
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Affiliation(s)
- Sara S Shagiwal
- The Generation R Study Group, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Pediatrics, Division of Respiratory Medicine and Allergology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Epidemiology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Herman T den Dekker
- The Generation R Study Group, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Pediatrics, Division of Respiratory Medicine and Allergology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Epidemiology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Johan C de Jongste
- Department of Pediatrics, Division of Respiratory Medicine and Allergology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Guy G Brusselle
- Department of Epidemiology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Respiratory Medicine and Allergology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Vincent W V Jaddoe
- The Generation R Study Group, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Epidemiology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Pediatrics, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Janine F Felix
- The Generation R Study Group, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Epidemiology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Liesbeth Duijts
- Department of Pediatrics, Division of Respiratory Medicine and Allergology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Respiratory Medicine and Allergology, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Department of Pediatrics, Division of Neonatology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
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6
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Hizawa N. Clinical approaches towards asthma and chronic obstructive pulmonary disease based on the heterogeneity of disease pathogenesis. Clin Exp Allergy 2017; 46:678-87. [PMID: 27009427 DOI: 10.1111/cea.12731] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Asthma and chronic obstructive pulmonary disease (COPD) are each heterogeneous disease classifications that include several clinical and pathophysiological phenotypes. This heterogeneity complicates characterization of each disease and, in some cases, hinders the selection of appropriate treatment. Therefore, in recent years, emphasis has been placed on improving our understanding of the various phenotypes of asthma and of COPD and identifying biomarkers for each phenotype. Likewise, the concept of the endotype has been gaining acceptance; an endotype is a disease subtype that is defined by unique or distinctive functional or pathophysiological mechanisms. Endotypes of asthma or COPD may be primarily characterized by increased susceptibility to type 2 inflammation, increased susceptibility to viral infections, bacterial colonization or impaired lung development. The 'Dutch hypothesis' is as follows: gene variants underlying particular endotypes interact with detrimental environmental stimuli (e.g. smoking, viral infection and air pollution) and contribute to the ultimate development of asthma, COPD or both. Novel approaches that involve multidimensional assessment should facilitate identification and management of the components that generate this heterogeneity. Ultimately, patients with chronic inflammatory lung diseases may be treated based on these endotypes as determined by the respective biomarkers that correspond to individual endotypes instead of on disease labels such as asthma, COPD or even asthma-COPD overlap syndrome (ACOS).
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Affiliation(s)
- N Hizawa
- Faculty of Medicine, Department of Pulmonary Medicine, University of Tsukuba, Tsukuba, Japan
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7
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Chawes BL, Stokholm J, Schoos AMM, Fink NR, Brix S, Bisgaard H. Allergic sensitization at school age is a systemic low-grade inflammatory disorder. Allergy 2017; 72:1073-1080. [PMID: 27992959 DOI: 10.1111/all.13108] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2016] [Indexed: 12/13/2022]
Abstract
BACKGROUND Systemic low-grade inflammation has been demonstrated in a range of the frequent noncommunicable diseases (NCDs) proposing a shared mechanism, but is largely unexplored in relation to allergic sensitization. We therefore aimed to investigate the possible association with childhood allergic sensitization. METHODS High-sensitivity C-reactive protein (hs-CRP), interleukin-1β (IL-1β), IL-6, tumor necrosis factor-α (TNF-α), and chemokine (C-X-C motif) ligand 8 (CXCL8) were measured in plasma at age 6 months (N = 214) and 7 years (N = 277) in children from the Copenhagen Prospective Studies on Asthma in Childhood2000 (COPSAC2000 ) birth cohort. Allergic sensitization against common inhalant and food allergens was determined longitudinally at ages ½, 1½, 4 and 6 years by specific IgE assessments and skin prick tests. Associations between inflammatory biomarkers and sensitization phenotypes were tested with logistic regression and principal component analyses (PCAs). RESULTS Adjusted for gender, recent infections, and a CRP genetic risk score, hs-CRP at 7 years was associated with concurrent elevated specific IgE against any allergen [adjusted OR (aOR) = 1.40; 95% CI, 1.14-1.72; P = 0.001], aeroallergens (aOR, 1.43; 1.15-1.77; P = 0.001), food allergens (aOR, 1.31; 95% CI, 1.02-1.67; P = 0.04), sensitization without any clinical allergy symptoms (aOR = 1.40; 1.06-1.85; P = 0.02), and with similar findings for skin prick tests. The other inflammatory markers were not univariately associated with sensitization, but multiparametric PCA suggested a specific inflammatory response among sensitized children. Inflammatory markers at age 6 months were not associated with subsequent development of sensitization phenotypes. CONCLUSIONS Elevated hs-CRP is associated with allergic sensitization in school-aged children suggesting systemic low-grade inflammation as a phenotypic characteristic of this early-onset NCD.
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Affiliation(s)
- B. L. Chawes
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
| | - J. Stokholm
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
- Department of Pediatrics; Naestved Hospital; Naestved Denmark
| | - A.-M. M. Schoos
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
| | - N. R. Fink
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
| | - S. Brix
- Department of Systems Biology; Center for Biological Sequence Analysis; Technical University of Denmark; Lyngby Denmark
| | - H. Bisgaard
- COPSAC; Copenhagen Prospective Studies on Asthma in Childhood; Herlev and Gentofte Hospital; University of Copenhagen; Copenhagen Denmark
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8
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Marguet C, Petat H, Michelet I, Lubrano M, Couderc L. Synthèse N° 3 : Bronchites chroniques obstructives de l’enfant : un concept émergent. REVUE DES MALADIES RESPIRATOIRES ACTUALITES 2017; 9:73-82. [PMID: 32362958 PMCID: PMC7185827 DOI: 10.1016/s1877-1203(17)30036-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- C. Marguet
- Pneumologie, allergologie & CRCM pédiatrique. Département de pédiatrie médicale, Centre hospitalier universitaire de Rouen, EA2656 université de Normandie, UNIRouen, F-7600 Rouen, France
| | - H. Petat
- Pneumologie, allergologie & CRCM pédiatrique. Département de pédiatrie médicale, Centre hospitalier universitaire de Rouen, EA2656 université de Normandie, UNIRouen, F-7600 Rouen, France
| | - I. Michelet
- Pneumologie, allergologie & CRCM pédiatrique. Département de pédiatrie médicale, Centre hospitalier universitaire de Rouen, EA2656 université de Normandie, UNIRouen, F-7600 Rouen, France
| | - M. Lubrano
- Pneumologie, allergologie & CRCM pédiatrique. Département de pédiatrie médicale, Centre hospitalier universitaire de Rouen, EA2656 université de Normandie, UNIRouen, F-7600 Rouen, France
| | - L. Couderc
- Pneumologie, allergologie & CRCM pédiatrique. Département de pédiatrie médicale, Centre hospitalier universitaire de Rouen, EA2656 université de Normandie, UNIRouen, F-7600 Rouen, France
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9
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Associations of wheezing phenotypes with late asthma outcomes in the Avon Longitudinal Study of Parents and Children: A population-based birth cohort. J Allergy Clin Immunol 2016; 138:1060-1070.e11. [PMID: 27106203 PMCID: PMC5052126 DOI: 10.1016/j.jaci.2016.01.046] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 12/20/2015] [Accepted: 01/21/2016] [Indexed: 12/25/2022]
Abstract
Background Variable patterns of childhood wheezing might indicate differences in the cause and prognosis of respiratory illnesses. Better understanding of these patterns could facilitate identification of modifiable factors related to development of asthma. Objectives We characterized childhood wheezing phenotypes from infancy to adolescence and their associations with asthma outcomes. Methods Latent class analysis was used to derive phenotypes based on patterns of wheezing recorded at up to 14 time points from birth to 16½ years among 12,303 participants from the Avon Longitudinal Study of Parents and Children. Measures of lung function (FEV1, forced vital capacity [FVC], and forced expiratory flow between 25% and 75% [FEF25-75]) and fraction of exhaled nitric oxide (Feno) were made at 14 to 15 years of age. Results Six wheezing phenotypes were identified: never/infrequent, preschool-onset remitting, midchildhood-onset remitting, school age–onset persisting, late childhood–onset persisting, and continuous wheeze. The 3 persistent phenotypes were associated with bronchodilator reversibility of 12% or greater (BDR) from baseline (odds ratio [OR] range, 2.14-3.34), a Feno value of 35 ppb or greater (OR range, 3.82-6.24), and lung function decrements (mean range of differences: −0.22 to −0.27 SD units (SDU) for FEV1/FVC ratio and −0.21 to −0.33 SDU for FEF25-75) compared with never/infrequent wheeze. Midchildhood-onset (4½ years) remitting wheeze was associated with BDR (OR, 1.77; 95% CI, 1.11-2.82), a Feno value of 35 ppb or greater (OR, 1.72; 95% CI, 1.14-2.59), FEV1/FVC ratio decrements (OR, −0.22 SDU; 95% CI, −0.36 to −0.08 SDU), and FEF25-75 decrements (OR, −0.16 SDU; 95% CI, −0.30 to −0.01 SDU). Preschool-onset (18 months) remitting wheeze was only associated with FEV1/FVC ratio decrements (OR, −0.15 SDU; 95% CI, −0.25 to −0.05 SDU) and FEF25-75 decrements (OR, −0.14 SDU; 95% CI, −0.24 to −0.04 SDU). The persisting phenotypes showed evidence of sex stratification during adolescence. Conclusions Early childhood–onset wheezing that persists into adolescence represents the clearest target group for interventions to maximize lung function outcomes.
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Minelli C, Dean CH, Hind M, Alves AC, Amaral AFS, Siroux V, Huikari V, Soler Artigas M, Evans DM, Loth DW, Bossé Y, Postma DS, Sin D, Thompson J, Demenais F, Henderson J, Bouzigon E, Jarvis D, Järvelin MR, Burney P. Association of Forced Vital Capacity with the Developmental Gene NCOR2. PLoS One 2016; 11:e0147388. [PMID: 26836265 PMCID: PMC4737618 DOI: 10.1371/journal.pone.0147388] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 01/04/2016] [Indexed: 12/31/2022] Open
Abstract
Background Forced Vital Capacity (FVC) is an important predictor of all-cause mortality in the absence of chronic respiratory conditions. Epidemiological evidence highlights the role of early life factors on adult FVC, pointing to environmental exposures and genes affecting lung development as risk factors for low FVC later in life. Although highly heritable, a small number of genes have been found associated with FVC, and we aimed at identifying further genetic variants by focusing on lung development genes. Methods Per-allele effects of 24,728 SNPs in 403 genes involved in lung development were tested in 7,749 adults from three studies (NFBC1966, ECRHS, EGEA). The most significant SNP for the top 25 genes was followed-up in 46,103 adults (CHARGE and SpiroMeta consortia) and 5,062 children (ALSPAC). Associations were considered replicated if the replication p-value survived Bonferroni correction (p<0.002; 0.05/25), with a nominal p-value considered as suggestive evidence. For SNPs with evidence of replication, effects on the expression levels of nearby genes in lung tissue were tested in 1,111 lung samples (Lung eQTL consortium), with further functional investigation performed using public epigenomic profiling data (ENCODE). Results NCOR2-rs12708369 showed strong replication in children (p = 0.0002), with replication unavailable in adults due to low imputation quality. This intronic variant is in a strong transcriptional enhancer element in lung fibroblasts, but its eQTL effects could not be tested due to low imputation quality in the eQTL dataset. SERPINE2-rs6754561 replicated at nominal level in both adults (p = 0.036) and children (p = 0.045), while WNT16-rs2707469 replicated at nominal level only in adults (p = 0.026). The eQTL analyses showed association of WNT16-rs2707469 with expression levels of the nearby gene CPED1. We found no statistically significant eQTL effects for SERPINE2-rs6754561. Conclusions We have identified a new gene, NCOR2, in the retinoic acid signalling pathway pointing to a role of vitamin A metabolism in the regulation of FVC. Our findings also support SERPINE2, a COPD gene with weak previous evidence of association with FVC, and suggest WNT16 as a further promising candidate.
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Affiliation(s)
- Cosetta Minelli
- Respiratory Epidemiology, Occupational Medicine and Public Health, National Heart and Lung Institute, Imperial College, London, United Kingdom
- * E-mail:
| | - Charlotte H. Dean
- Leukocyte Biology, National Heart and Lung Institute, Imperial College London, London, United Kingdom
- Mammalian Genetics Unit, MRC Harwell, Oxon, United Kingdom
| | - Matthew Hind
- Respiratory Department, Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom
| | - Alexessander Couto Alves
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
| | - André F. S. Amaral
- Respiratory Epidemiology, Occupational Medicine and Public Health, National Heart and Lung Institute, Imperial College, London, United Kingdom
- MRC-PHE Centre for Environment & Health, London, United Kingdom
| | - Valerie Siroux
- Univ. Grenoble Alpes, IAB, Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, F-38000, Grenoble, France
- INSERM, IAB, Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, F-38000, Grenoble, France
- CHU de Grenoble, IAB, Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, F-38000, Grenoble, France
| | | | - María Soler Artigas
- Genetic Epidemiology Group, Department of Health Sciences, University of Leicester, Leicester, United Kingdom
| | - David M. Evans
- University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Australia
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, United Kingdom
| | - Daan W. Loth
- Department of Epidemiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Yohan Bossé
- Institut universitaire de cardiologie et de pneumologie de Québec, Department of Molecular Medicine, Laval University, Québec, Canada
| | - Dirkje S. Postma
- Department of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Don Sin
- The University of British Columbia Center for Heart Lung Innovation, St-Paul’s Hospital, Vancouver, Canada
| | - John Thompson
- Department of Health Sciences, University of Leicester, Leicester, United Kingdom
| | - Florence Demenais
- INSERM, UMRS-946, Genetic Variation of Human Diseases Unit, Paris, France
- Univ. Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d’Hématologie, F-75007, Paris, France
| | - John Henderson
- School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom
| | - SpiroMeta consortium
- SpiroMeta consortium, Genetic Epidemiology Group, Department of Health Sciences, University of Leicester, Leicester, United Kingdom
| | - CHARGE consortium
- CHARGE consortium, Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, United States of America
| | - Emmanuelle Bouzigon
- INSERM, UMRS-946, Genetic Variation of Human Diseases Unit, Paris, France
- Univ. Paris Diderot, Sorbonne Paris Cité, Institut Universitaire d’Hématologie, F-75007, Paris, France
| | - Deborah Jarvis
- Respiratory Epidemiology, Occupational Medicine and Public Health, National Heart and Lung Institute, Imperial College, London, United Kingdom
- MRC-PHE Centre for Environment & Health, London, United Kingdom
| | - Marjo-Riitta Järvelin
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
- MRC-PHE Centre for Environment & Health, London, United Kingdom
- Biocenter Oulu, University of Oulu, Oulu, Finland
- Center for Life Course Epidemiology, Faculty of Medicine, P.O. Box 5000, FI-90014 University of Oulu, Oulu, Finland
- Unit of Primary Care, Oulu University Hospital, Kajaanintie 50, P.O. Box 20, FI-90220, Oulu, 90029 OYS, Finland
| | - Peter Burney
- Respiratory Epidemiology, Occupational Medicine and Public Health, National Heart and Lung Institute, Imperial College, London, United Kingdom
- MRC-PHE Centre for Environment & Health, London, United Kingdom
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11
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Yamada H, Masuko H, Yatagai Y, Sakamoto T, Kaneko Y, Iijima H, Naito T, Noguchi E, Konno S, Nishimura M, Hirota T, Tamari M, Hizawa N. Role of Lung Function Genes in the Development of Asthma. PLoS One 2016; 11:e0145832. [PMID: 26752288 PMCID: PMC4709100 DOI: 10.1371/journal.pone.0145832] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 12/09/2015] [Indexed: 12/02/2022] Open
Abstract
Although our previous GWAS failed to identify SNPs associated with pulmonary function at the level of genomewide significance, it did show that the heritability for FEV1/FVC was 41.6% in a Japanese population, suggesting that the heritability of pulmonary function traits can be explained by the additive effects of multiple common SNPs. In addition, our previous study indicated that pulmonary function genes identified in previous GWASs in non-Japanese populations accounted for 4.3% to 12.0% of the entire estimated heritability of FEV1/FVC in a Japanese population. Therefore, given that many loci with individual weak effects may contribute to asthma risk, in this study, we created a quantitative score of genetic load based on 16 SNPs implicated in lower lung function in both Japanese and non-Japanese populations. This genetic risk score (GRS) for lower FEV1/FVC was consistently associated with the onset of asthma (P = 9.6 × 10(-4)) in 2 independent Japanese populations as well as with the onset of COPD (P = 0.042). Clustering of asthma patients based on GRS levels indicated that an increased GRS may be responsible for the development of a particular phenotype of asthma characterized by early onset, atopy, and severer airflow obstruction.
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Affiliation(s)
- Hideyasu Yamada
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Hironori Masuko
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yohei Yatagai
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Tohru Sakamoto
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Yoshiko Kaneko
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | | | | | - Emiko Noguchi
- Department of Medical Genetics, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Satoshi Konno
- Laboratory for Respiratory Diseases, Center for Genomic Medicine, Institute of Physical and Chemical Research, Tsurumi, Kanagawa, Japan
| | - Masaharu Nishimura
- Laboratory for Respiratory Diseases, Center for Genomic Medicine, Institute of Physical and Chemical Research, Tsurumi, Kanagawa, Japan
| | - Tomomitsu Hirota
- First Department of Medicine, School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Mayumi Tamari
- First Department of Medicine, School of Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Nobuyuki Hizawa
- Department of Pulmonology, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
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12
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Noah TL, Auten R, Schwarze J, Davis S. Pediatric pulmonology year in review 2014: Part 2. Pediatr Pulmonol 2015; 50:1140-6. [PMID: 26193432 DOI: 10.1002/ppul.23252] [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: 06/14/2015] [Revised: 06/22/2015] [Accepted: 06/24/2015] [Indexed: 11/07/2022]
Abstract
To better meet the needs of our readership for updated perspectives on the rapidly expanding knowledge in our field, we here summarize the past year's publications in our major topic areas, as well as selected publications in these areas from the core clinical journal literature outside our own pages. This is Part 2 of a series and covers articles on neonatal lung disease, pulmonary physiology, and respiratory infection.
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Affiliation(s)
- Terry L Noah
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Richard Auten
- Department of Pediatrics, Duke University, Durham, North Carolina
| | - Jurgen Schwarze
- Department of Child Life and Health, The University of Edinburgh, Edinburgh, UK
| | - Stephanie Davis
- Department of Pediatrics, Riley Children's Hospital, Indiana University School of Medicine, Indianapolis, Indiana
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13
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Maternal fatty acid desaturase genotype correlates with infant immune responses at 6 months. Br J Nutr 2015; 114:891-8. [PMID: 26283408 DOI: 10.1017/s0007114515002561] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Breast milk long-chain PUFA (LCPUFA) have been associated with changes in early life immune responses and may modulate T-cell function in infancy. We studied the effect of maternal fatty acid desaturase (FADS) genotype and breast milk LCPUFA levels on infants' blood T-cell profiles and ex vivo-produced cytokines after anti-CD3/CD28 stimulation of peripheral blood mononuclear cells in 6-month-old infants from the Copenhagen Prospective Study of Asthma in Childhood birth cohort. LCPUFA concentrations of breast milk were assessed at 4 weeks of age, and FADS SNP were determined in both mothers and infants (n 109). In general, breast milk arachidonic acid (AA) levels were inversely correlated with the production of IL-10 (r -0.25; P=0.004), IL-17 (r -0.24; P=0.005), IL-5 (r -0.21; P=0.014) and IL-13 (r -0.17; P=0.047), whereas EPA was positively correlated with the counts of blood regulatory T-cells and cytotoxic T-cells and decreased T-helper cell counts. The minor FADS alleles were associated with lower breast milk AA and EPA, and infants of mothers carrying the minor allele of FADS SNP rs174556 had higher production of IL-10 (r -0.23; P=0.018), IL-17 (r -0.25; P=0.009) and IL-5 (r -0.21; P=0.038) from ex vivo-activated immune cells. We observed no association between T-cell distribution and maternal or infant FADS gene variants. We conclude that increased maternal LCPUFA synthesis and breast milk AA are associated with decreased levels of IL-5, IL-13 (type-2 related), IL-17 (type-17 related) and IL-10 (regulatory immune responses), but not with interferon-γ and TNF-α, which could be due to an effect of the maternal FADS variants on the offspring immune response transferred via breast milk LCPUFA.
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