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Prokopciuk N, Juskiene I, Tarasiuk N, Franck U, Kostiuk O, Valiulis A, Taminskiene V, Valiulis A. On the additional risk for human health in the use of sandblasting of building walls. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:56558-56568. [PMID: 36920615 DOI: 10.1007/s11356-023-26382-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
In 2021, concentrations of heavy metals (Ba, Cr, Fe, Mn, Pb, Ru, Sr, Zn, Zr) and radiocesium (137Cs) were measured in 13 locations in Vilnius in surface samples of walls and facades of buildings built of yellow bricks in order to evaluate possible aerosol air pollution due to sandblasting. The activity concentrations of 137Cs appeared there as a result of global fallout and precipitation of the products of the accident at the Chernobyl Nuclear Power Plant, and the concentration of Pb, as a component of road transport emissions. Other trace elements turned out to be impurities in the material of yellow bricks. In spring 2018, sandblasting of the walls of the building adjacent to the school led to the long-term significant aerosol contamination of school premises (up to 660 µg/m3). Due to sandblasting, the surface of the school sport yard was covered with a thin layer of scraped particles, which were transported by gusts of wind into the school premises. Sandblasting of walls and facades can also be a source of aerosols with 137Cs activity concentrations reaching ~ 40 Bq/kg and Pb - up to 98 ppm. Estimates show that along with 137Cs, the formation of aerosols with activity concentrations of 239, 240Pu reaching 1.6 Bq/kg is possible. Isotopes of 239, 240Pu are analogues of calcium and, when ingested, are deposited in the bones. The ingress of radioactive aerosols into the respiratory tract, especially of children of primary school age, creates additional risks of malignant diseases.
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Affiliation(s)
- Nina Prokopciuk
- Human Ecology Multidisciplinary Research Group, Clinic of Children's Diseases, Institute of Clinical Medicine, Vilnius University Faculty of Medicine, Antakalnio Str. 57, 10207, Vilnius, Lithuania.
- Department of Pathology, Forensic Medicine and Pharmacology, Institute of Biomedical Sciences, Vilnius University Faculty of Medicine, P. Baublio Str. 5, 08406, Vilnius, Lithuania.
| | - Izabele Juskiene
- Human Ecology Multidisciplinary Research Group, Clinic of Children's Diseases, Institute of Clinical Medicine, Vilnius University Faculty of Medicine, Antakalnio Str. 57, 10207, Vilnius, Lithuania
| | - Nikolaj Tarasiuk
- Human Ecology Multidisciplinary Research Group, Clinic of Children's Diseases, Institute of Clinical Medicine, Vilnius University Faculty of Medicine, Antakalnio Str. 57, 10207, Vilnius, Lithuania
- SRI Center for Physical Science and Technology, Savanoriu Av. 231, 02300, Vilnius, Lithuania
| | - Ulrich Franck
- Human Ecology Multidisciplinary Research Group, Clinic of Children's Diseases, Institute of Clinical Medicine, Vilnius University Faculty of Medicine, Antakalnio Str. 57, 10207, Vilnius, Lithuania
- Department of Environmental Immunology, Helmholtz Centre for Environmental Research-UFZ, Permoserstrasse 15, E04318, Leipzig, Germany
| | - Olena Kostiuk
- Human Ecology Multidisciplinary Research Group, Clinic of Children's Diseases, Institute of Clinical Medicine, Vilnius University Faculty of Medicine, Antakalnio Str. 57, 10207, Vilnius, Lithuania
- Shupyk National Healthcare University, Dorohozhytska Str. 9, Kiev, UA04112, Ukraine
| | - Algirdas Valiulis
- Department of Rehabilitation, Physical and Sports Medicine, Institute of Health Sciences, Vilnius University Faculty of Medicine, M.K. Ciurlionio Str. 21/27, 03101, Vilnius, Lithuania
| | - Vaida Taminskiene
- Human Ecology Multidisciplinary Research Group, Clinic of Children's Diseases, Institute of Clinical Medicine, Vilnius University Faculty of Medicine, Antakalnio Str. 57, 10207, Vilnius, Lithuania
- Department of Public Health, Institute of Health Sciences, Vilnius University Faculty of Medicine, M.K. Ciurlionio Str. 21/27, 03101, Vilnius, Lithuania
| | - Arunas Valiulis
- Human Ecology Multidisciplinary Research Group, Clinic of Children's Diseases, Institute of Clinical Medicine, Vilnius University Faculty of Medicine, Antakalnio Str. 57, 10207, Vilnius, Lithuania
- Department of Public Health, Institute of Health Sciences, Vilnius University Faculty of Medicine, M.K. Ciurlionio Str. 21/27, 03101, Vilnius, Lithuania
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Sunny SK, Zhang H, Rezwan FI, Relton CL, Henderson AJ, Merid SK, Melén E, Hallberg J, Arshad SH, Ewart S, Holloway JW. Changes of DNA methylation are associated with changes in lung function during adolescence. Respir Res 2020; 21:80. [PMID: 32264874 PMCID: PMC7140357 DOI: 10.1186/s12931-020-01342-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/25/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Adolescence is a significant period for the gender-dependent development of lung function. Prior studies have shown that DNA methylation (DNA-M) is associated with lung function and DNA-M at some cytosine-phosphate-guanine dinucleotide sites (CpGs) changes over time. This study examined whether changes of DNA-M at lung-function-related CpGs are associated with changes in lung function during adolescence for each gender, and if so, the biological significance of the detected CpGs. METHODS Genome-scale DNA-M was measured in peripheral blood samples at ages 10 (n = 330) and 18 years (n = 476) from the Isle of Wight (IOW) birth cohort in United Kingdom, using Illumina Infinium arrays (450 K and EPIC). Spirometry was conducted at both ages. A training and testing method was used to screen 402,714 CpGs for their potential associations with lung function. Linear regressions were applied to assess the association of changes in lung function with changes of DNA-M at those CpGs potentially related to lung function. Adolescence-related and personal and family-related confounders were included in the model. The analyses were stratified by gender. Multiple testing was adjusted by controlling false discovery rate of 0.05. Findings were further examined in two independent birth cohorts, the Avon Longitudinal Study of Children and Parents (ALSPAC) and the Children, Allergy, Milieu, Stockholm, Epidemiology (BAMSE) cohort. Pathway analyses were performed on genes to which the identified CpGs were mapped. RESULTS For females, 42 CpGs showed statistically significant associations with change in FEV1/FVC, but none for change in FEV1 or FVC. No CpGs were identified for males. In replication analyses, 16 and 21 of the 42 CpGs showed the same direction of associations among the females in the ALSPAC and BAMSE cohorts, respectively, with 11 CpGs overlapping across all the three cohorts. Through pathway analyses, significant biological processes were identified that have previously been related to lung function development. CONCLUSIONS The detected 11 CpGs in all three cohorts have the potential to serve as the candidate epigenetic markers for changes in lung function during adolescence in females.
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Affiliation(s)
- Shadia Khan Sunny
- Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, TN 38152 USA
| | - Hongmei Zhang
- Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, TN 38152 USA
| | - Faisal I. Rezwan
- School of Water, Energy and Environment, Cranfield University, Cranfield Bedfordshire, MK43 0AL England
| | - Caroline L. Relton
- MRC Integrative Epidemiology Unit, University of Bristol, Bristol, BS8 2BN UK
| | - A. John Henderson
- Population Health Sciences, University of Bristol, Bristol, BS8 2BN UK
| | - Simon Kebede Merid
- Department of Clinical Sciences and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
| | - Erik Melén
- Department of Clinical Sciences and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children’s Hospital, Stockholm, Sweden
| | - Jenny Hallberg
- Department of Clinical Sciences and Education Södersjukhuset, Karolinska Institutet, Stockholm, Sweden
- Sachs’ Children’s Hospital, Stockholm, Sweden
| | - S. Hasan Arshad
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD UK
- The David Hide Asthma and Allergy Research Centre, St Mary’s Hospital, Parkhurst Road, Newport, Isle of Wight PO30 5TG UK
| | - Susan Ewart
- Large Animal Clinical Sciences, Michigan State University, East Lansing, MI USA
| | - John W. Holloway
- Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, SO16 6YD UK
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Qi C, Xu CJ, Koppelman GH. The role of epigenetics in the development of childhood asthma. Expert Rev Clin Immunol 2019; 15:1287-1302. [PMID: 31674254 DOI: 10.1080/1744666x.2020.1686977] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Introduction: The development of childhood asthma is caused by a combination of genetic factors and environmental exposures. Epigenetics describes mechanisms of (heritable) regulation of gene expression that occur without changes in DNA sequence. Epigenetics is strongly related to aging, is cell-type specific, and includes DNA methylation, noncoding RNAs, and histone modifications.Areas covered: This review summarizes recent epigenetic studies of childhood asthma in humans, which mostly involve studies of DNA methylation published in the recent five years. Environmental exposures, in particular cigarette smoking, have significant impact on epigenetic changes, but few of these epigenetic signals are also associated with asthma. Several asthma-associated genetic variants relate to DNA methylation. Epigenetic signals can be better understood by studying their correlation with gene expression, which revealed higher presence and activation of blood eosinophils in asthma. Strong associations of nasal methylation signatures and atopic asthma were identified, which were replicable across different populations.Expert commentary: Epigenetic markers have been strongly associated with asthma, and might serve as biomarker of asthma. The causal and longitudinal relationships between epigenetics and disease, and between environmental exposures and epigenetic changes need to be further investigated. Efforts should be made to understand cell-type-specific epigenetic mechanisms in asthma.
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Affiliation(s)
- Cancan Qi
- Dept. of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Cheng-Jian Xu
- Dept. of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Gastroenterology, Hepatology and Endocrinology, CiiM, Centre for individualised infection medicine, A joint venture between Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany.,TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, Hannover, Germany
| | - Gerard H Koppelman
- Dept. of Pediatric Pulmonology and Pediatric Allergology, Beatrix Children's Hospital, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Carmona JJ, Barfield RT, Panni T, Nwanaji-Enwerem JC, Just AC, Hutchinson JN, Colicino E, Karrasch S, Wahl S, Kunze S, Jafari N, Zheng Y, Hou L, DeMeo DL, Litonjua AA, Vokonas PS, Peters A, Lin X, Schwartz J, Schulz H, Baccarelli AA. Metastable DNA methylation sites associated with longitudinal lung function decline and aging in humans: an epigenome-wide study in the NAS and KORA cohorts. Epigenetics 2018; 13:1039-1055. [PMID: 30343628 PMCID: PMC6342072 DOI: 10.1080/15592294.2018.1529849] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 09/10/2018] [Accepted: 09/22/2018] [Indexed: 10/28/2022] Open
Abstract
DNA methylation is an epigenetic regulator of gene transcription, which has been found to be both metastable and variable within human cohort studies. Currently, few studies have been done to identify metastable DNA methylation biomarkers associated with longitudinal lung function decline in humans. The identification of such biomarkers is important for screening vulnerable populations. We hypothesized that quantifiable blood-based DNA methylation alterations would serve as metastable biomarkers of lung function decline and aging, which may help to discover new pathways and/or mechanisms related to pulmonary pathogenesis. Using linear mixed models, we performed an Epigenome Wide Association Study (EWAS) between DNA methylation at CpG dinucleotides and longitudinal lung function (FVC, FEV1, FEF25-75%) decline and aging with initial discovery in the Normative Aging Study, and replication in the Cooperative Health Research in the Region of Augsburg cohort. We identified two metastable epigenetic loci associated with either poor lung function and aging, cg05575921 (AHRR gene), or lung function independently of aging, cg06126421 (IER3 gene). These loci may inform basic mechanisms associated with pulmonary function, pathogenesis, and aging. Human epigenomic variation, may help explain features of lung function decline and related pathophysiology not attributable to DNA sequence alone, such as accelerated pulmonary decline in smokers, former smokers, and perhaps non-smokers. Our EWAS across two cohorts, therefore, will likely have implications for the human population, not just the elderly.
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Affiliation(s)
- Juan Jose Carmona
- Department of Environmental Health and Program in Quantitative Genomics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Center for Bioethics, Harvard Medical School, Boston, MA, USA
- Office of Research, Dana-Farber/Harvard Cancer Institute, Boston, MA, USA
| | - Richard T. Barfield
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Tommaso Panni
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Jamaji C. Nwanaji-Enwerem
- Department of Environmental Health and Program in Quantitative Genomics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- MD-PhD Program, Harvard Medical School, Boston, MA, USA
| | - Allan C. Just
- Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - John N. Hutchinson
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Elena Colicino
- Departments Environmental Medicine & Public Health, Division of Biostatistics, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Stefan Karrasch
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Ludwig-Maximilians-Universität, Munich, Germany
- Comprehensive Pneumology Center Munich, Member of the German Center for Lung Research, Munich, Germany
| | - Simone Wahl
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Sonja Kunze
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Nadereh Jafari
- Center for Genetic Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Yinan Zheng
- Center for Population Epigenetics, Robert H. Lurie Comprehensive Cancer Center and Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Lifang Hou
- Center for Population Epigenetics, Robert H. Lurie Comprehensive Cancer Center and Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Dawn L. DeMeo
- Channing Division of Network Medicine and the Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Augusto A. Litonjua
- Channing Division of Network Medicine and the Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Pantel S. Vokonas
- VA Normative Aging Study, Veterans Affairs Boston Healthcare System and the Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Annette Peters
- Office of Research, Dana-Farber/Harvard Cancer Institute, Boston, MA, USA
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Xihong Lin
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, USA
- Department of Statistics, Harvard University, Cambridge, MA, USA
| | - Joel Schwartz
- Office of Research, Dana-Farber/Harvard Cancer Institute, Boston, MA, USA
| | - Holger Schulz
- Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
- Comprehensive Pneumology Center Munich, Member of the German Center for Lung Research, Munich, Germany
| | - Andrea A. Baccarelli
- Office of Research, Dana-Farber/Harvard Cancer Institute, Boston, MA, USA
- Departments of Epidemiology and Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA
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Liu C, Chen Z, Li W, Huang L, Zhang Y. Vitamin D Enhances Alveolar Development in Antenatal Lipopolysaccharide-Treated Rats through the Suppression of Interferon-γ Production. Front Immunol 2018; 8:1923. [PMID: 29354129 PMCID: PMC5760506 DOI: 10.3389/fimmu.2017.01923] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 12/15/2017] [Indexed: 12/12/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is characterized by the premature arrest of alveolar development. Antenatal exposure to inflammation inhibits lung morphogenesis, thereby increasing the risk for the development of BPD. Here, we investigated whether vitamin D (VitD) enhances alveolar development in antenatal lipopolysaccharide (LPS)-treated rats, which is a model for BPD. We used an established animal model of BPD, and random assignment to the control group, LPS group, or LPS with VitD group. Levels of interferon (IFN)-γ and interleukin-4 were detected by real-time polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay. IFN-γ producing CD8+ T cells were assessed by flow cytometry, and the methylation status of the VitD-response element (VDRE) was analyzed by bisulfite sequencing PCR. 25-hydroxyvitamin D levels were measured by liquid chromatography tandem mass spectrometry in maternal serum samples collected from 86 pregnant women in a prospective birth cohort enrolled from 2012 to 2013. Our results showed that VitD effectively alleviated the simplification of the lung alveolar structure in BPD rats and suppressed LPS-induced IFN-γ expression in the lung and spleen tissues. Further investigation revealed that VitD suppressed IFN-γ production in CD8+ T cells. Specifically, VitD increased the methylation percentage of the VDRE in the IFN-γ-promoter region and suppressed LPS-induced expression of IFN-γ. Additionally, we observed an association between maternal VitD exposure during pregnancy and neonatal IFN-γ levels in a prospective birth cohort, with a trend similar to that observed in the animal model. Our data suggested that supplementation of VitD could suppress IFN-γ production, resulting in improved alveolar development in an LPS-induced BPD rat model.
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Affiliation(s)
- Chengbo Liu
- Department of Neonatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Ze Chen
- Department of Neonatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wen Li
- Department of Neonatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Lisu Huang
- Department of Neonatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,MOE and Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China
| | - Yongjun Zhang
- Department of Neonatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China.,MOE and Shanghai Key Laboratory of Children's Environmental Health, Shanghai, China
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Vanker A, Gie R, Zar H. The association between environmental tobacco smoke exposure and childhood respiratory disease: a review. Expert Rev Respir Med 2017; 11:661-673. [PMID: 28580865 PMCID: PMC6176766 DOI: 10.1080/17476348.2017.1338949] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 06/02/2017] [Indexed: 12/19/2022]
Abstract
INTRODUCTION Childhood respiratory illness is a major cause of morbidity and mortality particularly in low and middle-income countries. Environmental tobacco smoke (ETS) exposure is a recognised risk factor for both acute and chronic respiratory illness. Areas covered: The aim of this paper was to review the epidemiology of ETS exposure and impact on respiratory health in children. We conducted a search of 3 electronic databases of publications on ETS and childhood respiratory illness from 1990-2015. Key findings were that up to 70% of children are exposed to ETS globally, but under-reporting may mask the true prevalence. Maternal smoking and ETS exposure influence infant lung development and are associated with childhood upper and lower respiratory tract infection, wheezing or asthma. Further, exposure to ETS is associated with more severe respiratory disease. ETS exposure reduces lung function early in life, establishing an increased lifelong risk of poor lung health. Expert commentary: Urgent and effective strategies are needed to decrease ETS exposure in young children to improve child and long-term lung health in adults especially in low and middle income countries where ETS exposure is increasing.
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Affiliation(s)
- A. Vanker
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital, and MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town, South Africa
| | - R.P. Gie
- Department of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - H.J. Zar
- Department of Paediatrics and Child Health, Red Cross War Memorial Children’s Hospital, and MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town, South Africa
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7
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Gref A, Merid SK, Gruzieva O, Ballereau S, Becker A, Bellander T, Bergström A, Bossé Y, Bottai M, Chan-Yeung M, Fuertes E, Ierodiakonou D, Jiang R, Joly S, Jones M, Kobor MS, Korek M, Kozyrskyj AL, Kumar A, Lemonnier N, MacIntyre E, Ménard C, Nickle D, Obeidat M, Pellet J, Standl M, Sääf A, Söderhäll C, Tiesler CMT, van den Berge M, Vonk JM, Vora H, Xu CJ, Antó JM, Auffray C, Brauer M, Bousquet J, Brunekreef B, Gauderman WJ, Heinrich J, Kere J, Koppelman GH, Postma D, Carlsten C, Pershagen G, Melén E. Genome-Wide Interaction Analysis of Air Pollution Exposure and Childhood Asthma with Functional Follow-up. Am J Respir Crit Care Med 2017; 195:1373-1383. [PMID: 27901618 DOI: 10.1164/rccm.201605-1026oc] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
RATIONALE The evidence supporting an association between traffic-related air pollution exposure and incident childhood asthma is inconsistent and may depend on genetic factors. OBJECTIVES To identify gene-environment interaction effects on childhood asthma using genome-wide single-nucleotide polymorphism (SNP) data and air pollution exposure. Identified loci were further analyzed at epigenetic and transcriptomic levels. METHODS We used land use regression models to estimate individual air pollution exposure (represented by outdoor NO2 levels) at the birth address and performed a genome-wide interaction study for doctors' diagnoses of asthma up to 8 years in three European birth cohorts (n = 1,534) with look-up for interaction in two separate North American cohorts, CHS (Children's Health Study) and CAPPS/SAGE (Canadian Asthma Primary Prevention Study/Study of Asthma, Genetics and Environment) (n = 1,602 and 186 subjects, respectively). We assessed expression quantitative trait locus effects in human lung specimens and blood, as well as associations among air pollution exposure, methylation, and transcriptomic patterns. MEASUREMENTS AND MAIN RESULTS In the European cohorts, 186 SNPs had an interaction P < 1 × 10-4 and a look-up evaluation of these disclosed 8 SNPs in 4 loci, with an interaction P < 0.05 in the large CHS study, but not in CAPPS/SAGE. Three SNPs within adenylate cyclase 2 (ADCY2) showed the same direction of the interaction effect and were found to influence ADCY2 gene expression in peripheral blood (P = 4.50 × 10-4). One other SNP with P < 0.05 for interaction in CHS, rs686237, strongly influenced UDP-Gal:betaGlcNAc β-1,4-galactosyltransferase, polypeptide 5 (B4GALT5) expression in lung tissue (P = 1.18 × 10-17). Air pollution exposure was associated with differential discs, large homolog 2 (DLG2) methylation and expression. CONCLUSIONS Our results indicated that gene-environment interactions are important for asthma development and provided supportive evidence for interaction with air pollution for ADCY2, B4GALT5, and DLG2.
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Affiliation(s)
- Anna Gref
- 1 Institute of Environmental Medicine
| | | | | | - Stéphane Ballereau
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | - Allan Becker
- 3 Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Tom Bellander
- 1 Institute of Environmental Medicine.,4 Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Anna Bergström
- 1 Institute of Environmental Medicine.,4 Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Yohan Bossé
- 5 Quebec Heart and Lung Institute and.,6 Department of Molecular Medicine, Laval University, Quebec City, Quebec, Canada
| | | | | | - Elaine Fuertes
- 9 School of Population and Public Health.,8 Institute of Epidemiology I, Helmholtz Zentrum München - German Research Centre for Environmental Health, Neuherberg, Germany
| | - Despo Ierodiakonou
- 10 Section of Paediatrics, Department of Medicine, Imperial College London, London, United Kingdom.,11 Department of Epidemiology
| | - Ruiwei Jiang
- 12 Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute, Department of Medical Genetics, and
| | - Stéphane Joly
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | - Meaghan Jones
- 12 Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute, Department of Medical Genetics, and
| | - Michael S Kobor
- 12 Centre for Molecular Medicine and Therapeutics, Child and Family Research Institute, Department of Medical Genetics, and
| | | | - Anita L Kozyrskyj
- 13 Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Ashish Kumar
- 1 Institute of Environmental Medicine.,14 Department of Public Health Epidemiology, Unit of Chronic Disease Epidemiology, Swiss Tropical and Public Health Institute, University of Basel, Switzerland
| | - Nathanaël Lemonnier
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | - Elaina MacIntyre
- 9 School of Population and Public Health.,8 Institute of Epidemiology I, Helmholtz Zentrum München - German Research Centre for Environmental Health, Neuherberg, Germany.,15 Environmental and Occupational Health, Public Health Ontario, Toronto, Ontario, Canada
| | - Camille Ménard
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | | | - Ma'en Obeidat
- 17 Centre for Heart Lung Innovation, University of British Columbia, Vancouver, British Columbia, Canada
| | - Johann Pellet
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | - Marie Standl
- 8 Institute of Epidemiology I, Helmholtz Zentrum München - German Research Centre for Environmental Health, Neuherberg, Germany
| | | | - Cilla Söderhäll
- 18 Department of Biosciences and Nutrition.,19 Center for Innovative Medicine, and.,20 Department of Women's and Children's Health, Karolinska Institutet, Stockholm, Sweden
| | - Carla M T Tiesler
- 7 Department of Medicine.,21 Division of Metabolic Diseases and Nutritional Medicine, Ludwig-Maximilians-University of Munich, Dr. von Hauner Children's Hospital, Munich, Germany
| | | | - Judith M Vonk
- 11 Department of Epidemiology.,23 Groningen Research Institute for Asthma and COPD
| | - Hita Vora
- 24 Preventive Medicine, University of Southern California, Los Angeles, California
| | - Cheng-Jian Xu
- 22 Department of Pulmonology.,23 Groningen Research Institute for Asthma and COPD.,25 Department of Genetics
| | - Josep M Antó
- 26 Centre for Research in Environmental Epidemiology, Barcelona, Spain
| | - Charles Auffray
- 2 European Institute for Systems Biology and Medicine, CNRS-ENS-UCBL, Université de Lyon, Lyon, France
| | | | - Jean Bousquet
- 27 CHU Montpellier, University of Montpellier, Montpellier, France
| | - Bert Brunekreef
- 28 Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands; and
| | - W James Gauderman
- 24 Preventive Medicine, University of Southern California, Los Angeles, California
| | - Joachim Heinrich
- 8 Institute of Epidemiology I, Helmholtz Zentrum München - German Research Centre for Environmental Health, Neuherberg, Germany
| | - Juha Kere
- 18 Department of Biosciences and Nutrition.,19 Center for Innovative Medicine, and
| | - Gerard H Koppelman
- 23 Groningen Research Institute for Asthma and COPD.,29 Pediatric Pulmonology and Pediatric Allerogology, Beatrix Children's Hospital, GRIAC Research Institute, and
| | - Dirkje Postma
- 22 Department of Pulmonology.,30 Department of Pulmonary Medicine and Tuberculosis, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | | | - Göran Pershagen
- 1 Institute of Environmental Medicine.,4 Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Erik Melén
- 1 Institute of Environmental Medicine.,4 Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden.,31 Sachs Children's Hospital, Stockholm, Sweden
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8
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Gruzieva O, Xu CJ, Breton CV, Annesi-Maesano I, Antó JM, Auffray C, Ballereau S, Bellander T, Bousquet J, Bustamante M, Charles MA, de Kluizenaar Y, den Dekker HT, Duijts L, Felix JF, Gehring U, Guxens M, Jaddoe VV, Jankipersadsing SA, Merid SK, Kere J, Kumar A, Lemonnier N, Lepeule J, Nystad W, Page CM, Panasevich S, Postma D, Slama R, Sunyer J, Söderhäll C, Yao J, London SJ, Pershagen G, Koppelman GH, Melén E. Epigenome-Wide Meta-Analysis of Methylation in Children Related to Prenatal NO2 Air Pollution Exposure. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:104-110. [PMID: 27448387 PMCID: PMC5226705 DOI: 10.1289/ehp36] [Citation(s) in RCA: 147] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 06/13/2016] [Accepted: 06/22/2016] [Indexed: 05/04/2023]
Abstract
BACKGROUND Prenatal exposure to air pollution is considered to be associated with adverse effects on child health. This may partly be mediated by mechanisms related to DNA methylation. OBJECTIVES We investigated associations between exposure to air pollution, using nitrogen dioxide (NO2) as marker, and epigenome-wide cord blood DNA methylation. METHODS We meta-analyzed the associations between NO2 exposure at residential addresses during pregnancy and cord blood DNA methylation (Illumina 450K) in four European and North American studies (n = 1,508) with subsequent look-up analyses in children ages 4 (n = 733) and 8 (n = 786) years. Additionally, we applied a literature-based candidate approach for antioxidant and anti-inflammatory genes. To assess influence of exposure at the transcriptomics level, we related mRNA expression in blood cells to NO2 exposure in 4- (n = 111) and 16-year-olds (n = 239). RESULTS We found epigenome-wide significant associations [false discovery rate (FDR) p < 0.05] between maternal NO2 exposure during pregnancy and DNA methylation in newborns for 3 CpG sites in mitochondria-related genes: cg12283362 (LONP1), cg24172570 (3.8 kbp upstream of HIBADH), and cg08973675 (SLC25A28). The associations with cg08973675 methylation were also significant in the older children. Further analysis of antioxidant and anti-inflammatory genes revealed differentially methylated CpGs in CAT and TPO in newborns (FDR p < 0.05). NO2 exposure at the time of biosampling in childhood had a significant impact on CAT and TPO expression. CONCLUSIONS NO2 exposure during pregnancy was associated with differential offspring DNA methylation in mitochondria-related genes. Exposure to NO2 was also linked to differential methylation as well as expression of genes involved in antioxidant defense pathways. Citation: Gruzieva O, Xu CJ, Breton CV, Annesi-Maesano I, Antó JM, Auffray C, Ballereau S, Bellander T, Bousquet J, Bustamante M, Charles MA, de Kluizenaar Y, den Dekker HT, Duijts L, Felix JF, Gehring U, Guxens M, Jaddoe VV, Jankipersadsing SA, Merid SK, Kere J, Kumar A, Lemonnier N, Lepeule J, Nystad W, Page CM, Panasevich S, Postma D, Slama R, Sunyer J, Söderhäll C, Yao J, London SJ, Pershagen G, Koppelman GH, Melén E. 2017. Epigenome-wide meta-analysis of methylation in children related to prenatal NO2 air pollution exposure. Environ Health Perspect 125:104-110; http://dx.doi.org/10.1289/EHP36.
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Affiliation(s)
- Olena Gruzieva
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Address corresponence to O. Gruzieva, Institute of Environmental Medicine, Karolinska Institutet, Nobels väg 13, SE-17177 Stockholm, Sweden. Telephone: 46852480022. E-mail:
| | - Cheng-Jian Xu
- Groningen Research Institute for Asthma and COPD (GRIAC), Department of Pulmonology, and
- Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Carrie V. Breton
- Department of Preventive Medicine, University of Southern California, Los Angeles, California, USA
| | - Isabella Annesi-Maesano
- Department of Epidemiology of Allergic and Respiratory Diseases, Institut National de la Santé et de la Recherche Médicale (INSERM), Paris, France
| | - Josep M. Antó
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - Charles Auffray
- European Institute for Systems Biology and Medicine, Université de Lyon, Lyon, France
| | - Stéphane Ballereau
- European Institute for Systems Biology and Medicine, Université de Lyon, Lyon, France
| | - Tom Bellander
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Jean Bousquet
- CHU (Centre Hospitalier Universitaire) Montpellier, University of Montpellier, Montpellier, France
| | - Mariona Bustamante
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
- Center for Genomic Regulation (CRG), Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Marie-Aline Charles
- Early Origin of the Child’s Health And Development (ORCHAD) team, Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité (CRESS-UMR1153) Inserm, Université Paris Descartes, Villejuif, France
| | - Yvonne de Kluizenaar
- The Netherlands Organization for Applied Scientific Research (TNO), Delft, the Netherlands
| | - Herman T. den Dekker
- Generation R Study Group,
- Department of Epidemiology, and
- Department of Pediatrics, Erasmus MC (Medical Centre), University Medical Center, Rotterdam, the Netherlands
| | - Liesbeth Duijts
- Generation R Study Group,
- Department of Epidemiology, and
- Department of Pediatrics, Erasmus MC (Medical Centre), University Medical Center, Rotterdam, the Netherlands
| | - Janine F. Felix
- Generation R Study Group,
- Department of Epidemiology, and
- Department of Pediatrics, Erasmus MC (Medical Centre), University Medical Center, Rotterdam, the Netherlands
| | - Ulrike Gehring
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, the Netherlands
| | - Mònica Guxens
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
- Department of Child and Adolescent Psychiatry/Psychology, Erasmus University Medical Centre–Sophia Children’s Hospital, Rotterdam, the Netherlands
| | - Vincent V.W. Jaddoe
- Generation R Study Group,
- Department of Epidemiology, and
- Department of Pediatrics, Erasmus MC (Medical Centre), University Medical Center, Rotterdam, the Netherlands
| | - Soesma A. Jankipersadsing
- Groningen Research Institute for Asthma and COPD (GRIAC), Department of Pulmonology, and
- Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Simon Kebede Merid
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Juha Kere
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Ashish Kumar
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Unit of Chronic Disease Epidemiology, Department of Public Health Epidemiology, Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Nathanael Lemonnier
- European Institute for Systems Biology and Medicine, Université de Lyon, Lyon, France
| | - Johanna Lepeule
- Team of Environmental Epidemiology, Inserm and University Grenoble-Alpes, IAB (U1209), Grenoble, France
| | - Wenche Nystad
- Division for Physical and Mental health, Norwegian Institute of Public Health, Oslo, Norway
| | - Christian Magnus Page
- Division for Physical and Mental health, Norwegian Institute of Public Health, Oslo, Norway
| | - Sviatlana Panasevich
- Division for Physical and Mental health, Norwegian Institute of Public Health, Oslo, Norway
| | - Dirkje Postma
- Groningen Research Institute for Asthma and COPD (GRIAC), Department of Pulmonology, and
| | - Rémy Slama
- Team of Environmental Epidemiology, Inserm and University Grenoble-Alpes, IAB (U1209), Grenoble, France
| | - Jordi Sunyer
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
- Universitat Pompeu Fabra (UPF), Barcelona, Spain
- CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - Cilla Söderhäll
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
- Department of Women´s and Children´s Health, Karolinska Institutet, Stockholm, Sweden
| | - Jin Yao
- Department of Preventive Medicine, University of Southern California, Los Angeles, California, USA
| | - Stephanie J. London
- Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Research Triangle Park, North Carolina, USA
| | - Göran Pershagen
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
| | - Gerard H. Koppelman
- Groningen Research Institute for Asthma and COPD (GRIAC), Beatrix Children’s Hospital, Department of Pediatric Pulmonology and Pediatric Allergology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Centre for Occupational and Environmental Medicine, Stockholm County Council, Stockholm, Sweden
- Sachs Children’s Hospital, Stockholm, Sweden
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9
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Epigenetics in Kidney Transplantation: Current Evidence, Predictions, and Future Research Directions. Transplantation 2016; 100:23-38. [PMID: 26356174 DOI: 10.1097/tp.0000000000000878] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Epigenetic modifications are changes to the genome that occur without any alteration in DNA sequence. These changes include cytosine methylation of DNA at cytosine-phosphate diester-guanine dinucleotides, histone modifications, microRNA interactions, and chromatin remodeling complexes. Epigenetic modifications may exert their effect independently or complementary to genetic variants and have the potential to modify gene expression. These modifications are dynamic, potentially heritable, and can be induced by environmental stimuli or drugs. There is emerging evidence that epigenetics play an important role in health and disease. However, the impact of epigenetic modifications on the outcomes of kidney transplantation is currently poorly understood and deserves further exploration. Kidney transplantation is the best treatment option for end-stage renal disease, but allograft loss remains a significant challenge that leads to increased morbidity and return to dialysis. Epigenetic modifications may influence the activation, proliferation, and differentiation of the immune cells, and therefore may have a critical role in the host immune response to the allograft and its outcome. The epigenome of the donor may also impact kidney graft survival, especially those epigenetic modifications associated with early transplant stressors (e.g., cold ischemia time) and donor aging. In the present review, we discuss evidence supporting the role of epigenetic modifications in ischemia-reperfusion injury, host immune response to the graft, and graft response to injury as potential new tools for the diagnosis and prediction of graft function, and new therapeutic targets for improving outcomes of kidney transplantation.
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10
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Schenkel LC, Rodenhiser DI, Ainsworth PJ, Paré G, Sadikovic B. DNA methylation analysis in constitutional disorders: Clinical implications of the epigenome. Crit Rev Clin Lab Sci 2016; 53:147-65. [PMID: 26758403 DOI: 10.3109/10408363.2015.1113496] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Genomic, chromosomal, and gene-specific changes in the DNA sequence underpin both phenotypic variations in populations as well as disease associations, and the application of genomic technologies for the identification of constitutional (inherited) or somatic (acquired) alterations in DNA sequence forms a cornerstone of clinical and molecular genetics. In addition to the disruption of primary DNA sequence, the modulation of DNA function by epigenetic phenomena, in particular by DNA methylation, has long been known to play a role in the regulation of gene expression and consequent pathogenesis. However, these epigenetic factors have been identified only in a handful of pediatric conditions, including imprinting disorders. Technological advances in the past decade that have revolutionized clinical genomics are now rapidly being applied to the emerging discipline of clinical epigenomics. Here, we present an overview of epigenetic mechanisms with a focus on DNA modifications, including the molecular mechanisms of DNA methylation and subtypes of DNA modifications, and we describe the classic and emerging genomic technologies that are being applied to this study. This review focuses primarily on constitutional epigenomic conditions associated with a spectrum of developmental and intellectual disabilities. Epigenomic disorders are discussed in the context of global genomic disorders, imprinting disorders, and single gene disorders. We include a section focused on integration of genetic and epigenetic mechanisms together with their effect on clinical phenotypes. Finally, we summarize emerging epigenomic technologies and their impact on diagnostic aspects of constitutional genetic and epigenetic disorders.
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Affiliation(s)
| | - David I Rodenhiser
- b Departments of Biochemistry , Oncology and Paediatrics, Western University , London , ON , Canada .,c London Regional Cancer Program, London Health Sciences Centre , London , ON , Canada .,e Children's Health Research Institute , London , ON , Canada
| | - Peter J Ainsworth
- a Departments of Pathology and Laboratory Medicine .,b Departments of Biochemistry , Oncology and Paediatrics, Western University , London , ON , Canada .,c London Regional Cancer Program, London Health Sciences Centre , London , ON , Canada .,d Molecular Genetics Laboratory, London Health Sciences Centre , London , ON , Canada .,e Children's Health Research Institute , London , ON , Canada
| | - Guillaume Paré
- f Department of Pathology and Molecular Medicine , and.,g Department of Clinical Epidemiology and Biostatistics , McMaster University , Hamilton , ON , Canada
| | - Bekim Sadikovic
- a Departments of Pathology and Laboratory Medicine .,c London Regional Cancer Program, London Health Sciences Centre , London , ON , Canada .,d Molecular Genetics Laboratory, London Health Sciences Centre , London , ON , Canada .,e Children's Health Research Institute , London , ON , Canada
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11
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Macchiaverni P, Ynoue LH, Arslanian C, Verhasselt V, Condino-Neto A. Early Exposure to Respiratory Allergens by Placental Transfer and Breastfeeding. PLoS One 2015; 10:e0139064. [PMID: 26398234 PMCID: PMC4580413 DOI: 10.1371/journal.pone.0139064] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2015] [Accepted: 09/06/2015] [Indexed: 02/05/2023] Open
Abstract
The relationship between allergen exposure and the onset of or protection from allergic diseases remains unclear. Many factors could be related to immunological responses, such as the age when the exposure occurs, type of allergen, timing, dose, and allergen route. In this study, we investigated whether exposure to respiratory allergens could occur in pregnancy or early life. In particular, we assessed whether Der p 1 and Blo t 5, as well as specific antibodies against these allergens, could be detected in 90 paired cord blood and colostrum samples. Der p 1 was detected in 58.6% of colostrum and 29% of cord blood samples, whereas Blot 5 was positive in 41.3% and 9.6% of the samples, respectively. Similar to specific IgA, which could be detected in all samples for both mites, specific IgG was found in a high number of colostrum samples, 93.5% and 94.8% for Dp and Bt, respectively. Although allergens were not detected in all cord blood samples, a high percentage of them (≥95%) were positive for specific IgM to both mites in cord blood samples, suggesting that neonates can be exposed and sensitized to airborne allergens during pregnancy. Many studies have attempted to correlate allergen exposure or its prevention in early infancy with the onset of or protection from allergic diseases. However, conflicting and inconsistent data do not show a clear correlation with or suggest a way to prevent allergen sensitization. Nevertheless, these unconvincing results could be better understood if the relationship with many aspects of allergen exposure after pregnancy could be clarified. Thus, it is necessary to address basic issues related to allergen exposure, including the development of reproducible, standardized and reliable methods, and to determine how and where the exposure occurs.
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Affiliation(s)
- Patricia Macchiaverni
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Leandro H. Ynoue
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Christina Arslanian
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Valérie Verhasselt
- Institut National de la Santé et de la Recherche Médicale (INSERM), U924 Université de Nice-Sophia Antipolis, Valbonne, France
| | - Antonio Condino-Neto
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
- * E-mail:
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12
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Everson TM, Lyons G, Zhang H, Soto-Ramírez N, Lockett GA, Patil VK, Merid SK, Söderhäll C, Melén E, Holloway JW, Arshad SH, Karmaus W. DNA methylation loci associated with atopy and high serum IgE: a genome-wide application of recursive Random Forest feature selection. Genome Med 2015; 7:89. [PMID: 26292806 PMCID: PMC4545869 DOI: 10.1186/s13073-015-0213-8] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 08/03/2015] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND The prevalence of allergic diseases are increasing worldwide, emphasizing the need to elucidate their pathogeneses. The aims of this study were to use a two-stage design to identify DNA methylation levels at cytosine-phosphate-guanine (CpG) sites across the genome associated with atopy and high serum immunoglobulin E (IgE), then to replicate our findings in an independent cohort. METHODS Atopy was assessed via skin prick tests and high serum IgE. Methylation levels were measured from whole blood using the Illumina Infinium HumanMethylation450 BeadChip from 18-year-old women (n = 245) and men (n = 122) in the Isle of Wight birth cohort. After data cleaning and processing, and removing probes with possible single nucleotide polymorphisms, DNA methylation levels from 254,460 CpG sites from the 245 women were subjected to recursive Random Forest feature selection for stage 1. The sites selected from stage 1 were tested in stage 2 for associations with atopy and high IgE levels (>200 kU/L) via logistic regression adjusted for predicted cell-type proportions and sex. Sites significantly associated with atopy in stage 2 underwent replication tests in the independent Swedish birth cohort BAMSE (n = 464). RESULTS In stage 1, 62 sites were selected, of which 22 were associated with atopy in stage 2 (P-value range 6.5E-9 to 1.4E-5) and 12 associated with high IgE levels (P-value range 1.1E-5 to 7.1E-4) at the Bonferroni adjusted alpha (0.05/62 = 0.0008). Of the 19 available sites, 13 were replicated. CONCLUSIONS We identified 13 novel epigenetic loci associated with atopy and high IgE that could serve as candidate loci for future studies; four were within genes with known roles in the immune response (cg04983687 in the body of ZFPM1, cg18219873 in the 5'UTR of PRG2, cg27469152 in the 3'UTR of EPX, and cg09332506 in the body of COPA).
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Affiliation(s)
- Todd M Everson
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, 915 Greene Street, Columbia, SC, 29208, USA.
| | - Genevieve Lyons
- Department of Biostatistics, University of Texas M. D. Anderson Cancer Center, Pickens Tower, 1400 Pressler, Houston, TX, 77230, USA
| | - Hongmei Zhang
- Division of Epidemiology, Biostatistics and Environmental Health, School of Public Health, University of Memphis, 236A Robison Hall, Memphis, TN, 38152, USA
| | - Nelís Soto-Ramírez
- Division of Epidemiology, Biostatistics and Environmental Health, School of Public Health, University of Memphis, 236A Robison Hall, Memphis, TN, 38152, USA
| | - Gabrielle A Lockett
- Human Development and Health, Faculty of Medicine, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, UK
| | - Veeresh K Patil
- The David Hide Asthma and Allergy Research Centre, St Mary's, Hospital, Parkhurst Road, Newport, Isle of Wight, PO30 5TG, UK
| | - Simon K Merid
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Cilla Söderhäll
- Department of Biosciences and Nutrition, and Center for Innovative Medicine (CIMED), Karolinska Institutet, 141 83, Stockholm, Sweden
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Sachs' Children's Hospital, Stockholm, Sweden
| | - John W Holloway
- Human Development and Health, Faculty of Medicine, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, UK
- Clinical and Experimental Sciences and NIHR Respiratory Biomedical Research Unit, Faculty of Medicine, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, UK
| | - S Hasan Arshad
- The David Hide Asthma and Allergy Research Centre, St Mary's, Hospital, Parkhurst Road, Newport, Isle of Wight, PO30 5TG, UK
- Clinical and Experimental Sciences and NIHR Respiratory Biomedical Research Unit, Faculty of Medicine, University of Southampton, Southampton General Hospital, Southampton, SO16 6YD, UK
| | - Wilfried Karmaus
- Division of Epidemiology, Biostatistics and Environmental Health, School of Public Health, University of Memphis, 236A Robison Hall, Memphis, TN, 38152, USA
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13
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Zhu Y, Fu J, Yang H, Pan Y, Yao L, Xue X. Hyperoxia-induced methylation decreases RUNX3 in a newborn rat model of bronchopulmonary dysplasia. Respir Res 2015; 16:75. [PMID: 26104385 PMCID: PMC4499173 DOI: 10.1186/s12931-015-0239-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2015] [Accepted: 06/16/2015] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) in premature infants is a predominantly secondary occurrence to intrauterine inflammation/infection and postpartum mechanical ventilation; in recent years, an association with epigenetics has also been found. DNA methylation, catalyzed by DNA methyl transferases (DNMTs), and tri-methylation of lysine 27 on histone H3 (H3K27me3), mediated by the methyltransferase, Enhancer of Zeste Homolog 2 (EZH2), are some of the most commonly found modifications in epigenetics. Runt-related transcription factor 3 (RUNX3) is associated with pulmonary epithelial and vascular development and regulates expression at the post-transcriptional level by DNA methylation through DNMT1 or DNMT3b. However, the involvements of these epigenetic factors in the occurrence of BPD are, as yet, unclear. METHODS Newborn rats were randomly assigned to a model, hyperoxia (85 % O2) or control, normoxia group (21 % O2). Lung tissues and alveolar type 2 (AT2) epithelial cells were collected between 1-14 days. The expression of DNMTs, and EZH2 was detected by immunohistochemistry, Western blot and real-time PCR. The percentage of DNA methylation and H3K27me3 levels in the RUNX3 promoter region was measured by bisulfite sequencing PCR and chromatin immunoprecipitation assay. RUNX3 protein and mRNA expression in AT2 cells was also measured after inhibition using the DNA methylation inhibitor, 5-Aza-2'-deoxycytidine, the H3K27me3 inhibitor, JMJD3, and the EZH2 inhibitor, DZNep. RESULTS Compared with the control group, RUNX3 protein was downregulated and DNMT3b and EZH2 were highly expressed in lung tissues and AT2 cells of the model group (P < 0.05), while high DNA methylation and H3K27me3 modifications were present in the RUNX3 promoter region, in lung tissues of the model group (P < 0.05). Following hyperoxia in the model group, JMJD3 and DZNep significantly reversed the hyperoxia-induced down-regulation of RUNX3 expression in AT2 cells (P < 0.05), more so than 5-Aza-2'-deoxycytidine (P < 0.05). CONCLUSIONS 1) DNA methylation and H3K27 trimethylation are present in the BPD model; 2) RUNX3 down-regulation is attributed to both DNMT3b-catalyzed DNA methylation and EZH2-catalyzed histone methylation.
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Affiliation(s)
- Yuting Zhu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
| | - Jianhua Fu
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
| | - Haiping Yang
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
| | - Yuqing Pan
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
| | - Li Yao
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
| | - Xindong Xue
- Department of Pediatrics, Shengjing Hospital of China Medical University, Shenyang, 110004, China.
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Guibas GV, Megremis S, West P, Papadopoulos NG. Contributing factors to the development of childhood asthma: working toward risk minimization. Expert Rev Clin Immunol 2015; 11:721-35. [PMID: 25873298 DOI: 10.1586/1744666x.2015.1035649] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Asthma is the most common chronic disease in childhood, and considerable research has been undertaken to find ways to prevent its development and reduce its prevalence. For such interventions to be successful, risk factors for asthma emergence should be identified and clearly defined. Data are robust for some of them, including atopy, viral infections and exposure to airborne irritants, whereas it is less conclusive for others, such as aeroallergen exposure and bacterial infections. Several interventions for asthma prevention, including avoidance and pharmacotherapy, have been attempted. However, most of them have furnished equivocal results. Various issues hinder the establishment of risk factors for asthma development and reduce the effectiveness of interventions, including the complexity of the disease and the fluidity of the developing systems in childhood. In this review, we revisit the evidence on pediatric asthma risk factors and prevention and discuss issues that perplex this field.
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Affiliation(s)
- George V Guibas
- Centre for Pediatrics and Child Health, Institute of Human Development, University of Manchester, Manchester, UK
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