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Brahim Errahmani M, Aichi M, Menaa M. Discriminant analysis and logistic regression on genetic history and environmental factors in children with asthma. Minerva Pediatr (Torino) 2024; 76:236-244. [PMID: 33845560 DOI: 10.23736/s2724-5276.21.06042-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Asthma is known to be related to genetic and environmental factors, we aimed to identify the predictors discriminating between children with asthma and a control group in order to build typical profiles of these children. METHODS A multidimensional analysis covered children (58 with asthma and 217 as control group), under 17 years of age, involving environmental variables and medical history of these children and their families. RESULTS Chi-square tests highlighted significant links between variables as rhinitis and conjunctivitis (P<0.001). The results showed, in group of asthmatic children, significant high frequencies of allergies, mainly seasonal (P<0.001), rhinitis, family history more present in mothers (P=0.002) and in maternal aunts and uncles (P<0.02). Allergies were mostly present in mothers of asthmatic children (P=0.03). Children whose father, mother or both had asthma were significantly more numerous in asthmatic group (P=0.0007). A multiple correspondence analysis (MCA) identified two typical profiles of children, a first group of asthmatic children with positive modalities of family history, medical and environmental factors, a second, the control group (nA, non-asthmatic children), with essentially negative modalities of the variables. Logistic regression (LR) resulted in a final model which retained four significant predictors, rhinitis (P=0.01), atopic dermatitis (P=0.04), mother antecedents (P=0.03) and paternal uncle antecedents (P=0.008) with a globally appreciable predictive value (82%) of the Hosmer-Lemeshow Test. CONCLUSIONS These results allowed the drafting of a typical profile quantifying through a function of a few predictors, the variation of the probability for a child to develop an asthma.
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Affiliation(s)
- Mohamed Brahim Errahmani
- Department of Chemistry, Faculty of Science, Blida1 University, Blida, Algeria -
- Department of Cellular Biology, Faculty of Biological Sciences, Blida1 University, Blida, Algeria -
| | - Mériem Aichi
- Department of Cellular Biology, Faculty of Biological Sciences, Blida1 University, Blida, Algeria
| | - Mahdia Menaa
- Department of Cellular Biology, Faculty of Biological Sciences, Blida1 University, Blida, Algeria
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2
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Muamba Nkashama L, Kayembe Lubeji D, Mwanza Kasongo JC, Kadima Mutombo T, Nyembue Tshipukane D. Sensitization and Clinical Characteristics of Congolese Children with Vernal Keratoconjunctivitis in Kinshasa. Ocul Immunol Inflamm 2023; 31:15-20. [PMID: 34582304 DOI: 10.1080/09273948.2021.1976217] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Data on the sensitization pattern and clinical characteristics of pediatric vernal keratoconjunctivitis (VKC) are scary in Central Africa. This chronic form of allergic conjunctivitis affects the quality of school life and work productivity. There is no study that shows the breadth of vernal keratoconjunctivitis in our setting. PURPOSE To describe the clinical characteristics of vernal keratoconjunctivitis in Kinshasa, to evaluate the sensitization profile and associated factors. METHODS A total of 400 children with vernal keratoconjunctivitis underwent a clinical examination and a skin prick test (SPT) for 10 allergens. Dermatophagoides pteronyssinus, Blomia tropicalis and cockroach were the most common allergens in 52, 1 %, 18, 8% and 13% respectively among sensitized children and 66, 4% showed polysensitization. RESULTS The main symptoms were itchy eyes 45%, brownish discoloration conjunctiva 17%, red eyes 12, 2%, eyelids rubbing 11, 5%, tearing 8, 7% and photophobia 5, 5%.The limbic form was predominant with 54%, followed by palpebral form 26% and mixed form 20%. The most common complications were superficial punctate keratitis 17, 2%, shield ulcer 1, 5%, corneal plaque 1, 3% and corneal erosion 1%. CONCLUSION This study outlines that 34, 5% of children attending the outpatient Ophthalmology Department in two hospitals of Kinshasa for vernal keratoconjunctivitis disease had a positive skin prick test to at least one allergen, in particular for Dermatophagoides pteronyssinus, Blomia tropicalis and cockroach.
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Affiliation(s)
- Léon Muamba Nkashama
- Ophthalmology Department, University Hospital of Kinshasa, Kinshasa, Democratic Republic of Congo
| | - David Kayembe Lubeji
- Ophthalmology Department, University Hospital of Kinshasa, Kinshasa, Democratic Republic of Congo
| | | | - Théodore Kadima Mutombo
- Masina Ophthalmology Hospital, National Eye Care Program, Kinshasa, Democratic Republic of Congo
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Vernet R, Matran R, Zerimech F, Madore AM, Lavoie ME, Gagnon PA, Mohamdi H, Margaritte-Jeannin P, Siroux V, Dizier MH, Demenais F, Laprise C, Nadif R, Bouzigon E. Identification of novel genes influencing eosinophil-specific protein levels in asthma families. J Allergy Clin Immunol 2022; 150:1168-1177. [PMID: 35671886 DOI: 10.1016/j.jaci.2022.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 05/19/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Eosinophils play a key role in the asthma allergic response by releasing cytotoxic molecules such as eosinophil cationic protein (ECP) and eosinophil-derived neurotoxin (EDN) that generate epithelium damages. OBJECTIVE To identify genetic variants influencing ECP and EDN levels in asthma-ascertained families. METHODS We performed univariate and bivariate genome-wide association analyses of ECP and EDN levels in 1,018 subjects from EGEA study with follow-up in 153 subjects from SLSJ study and combined the results of these two studies through meta-analysis. We then conducted Bayesian statistical fine-mapping together with quantitative trait locus and functional annotation analyses to identify the most likely functional genetic variants and candidate genes. RESULTS We identified five genome-wide significant loci (P<5x10-8) including seven distinct signals associated with ECP and/or EDN levels. The genes targeted by our fine-mapping and functional search include RNASE2 and RNASE3 (14q11) which encode EDN and ECP respectively and four other genes which regulate ECP/EDN levels. These four genes were the following: JAK1 (1p31) a transcription factor with a key role in the immune response and a potential therapeutic target for eosinophilic asthma, ARHGAP25 (2p13) involved in leukocyte recruitment to inflammatory sites, NDUFA4 (7p21) encoding a component of the mitochondrial respiratory chain and involved in cellular response to stress and CTSL (9q22) involved in immune response, extra-cellular remodeling and allergic inflammation. CONCLUSION This study demonstrates that the analysis of specific phenotypes produced by eosinophils allows identifying genes with a major role in allergic response and inflammation and offering potential therapeutic targets for asthma.
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Affiliation(s)
- Raphaël Vernet
- Université Paris Cité, INSERM, UMR 1124, Group of Genomic Epidemiology and Multifactorial Diseases, Paris, France
| | - Régis Matran
- Université Lille, CHU Lille, Institut Pasteur de Lille, ULR 4483, F-59000 Lille, France
| | - Farid Zerimech
- Université Lille, CHU Lille, Institut Pasteur de Lille, EA 4483 - IMPECS, F-59000 Lille, France
| | - Anne-Marie Madore
- Basic Sciences department, Université du Québec à Chicoutimi, Saguenay, Québec, Canada, Centre intersectoriel en santé durable, Université du Québec à Chicoutimi, Saguenay, Québec, Canada
| | - Marie-Eve Lavoie
- Basic Sciences department, Université du Québec à Chicoutimi, Saguenay, Québec, Canada, Centre intersectoriel en santé durable, Université du Québec à Chicoutimi, Saguenay, Québec, Canada
| | - Pierre-Alexandre Gagnon
- Basic Sciences department, Université du Québec à Chicoutimi, Saguenay, Québec, Canada, Centre intersectoriel en santé durable, Université du Québec à Chicoutimi, Saguenay, Québec, Canada
| | - Hamida Mohamdi
- Université Paris Cité, INSERM, UMR 1124, Group of Genomic Epidemiology and Multifactorial Diseases, Paris, France
| | - Patricia Margaritte-Jeannin
- Université Paris Cité, INSERM, UMR 1124, Group of Genomic Epidemiology and Multifactorial Diseases, Paris, France
| | - Valérie Siroux
- Inserm, Université Grenoble Alpes, CNRS, IAB, Team of Environmental Epidemiology Applied to the Development and Respiratory Health, Grenoble, France
| | - Marie-Hélène Dizier
- Université Paris Cité, INSERM, UMR 1124, Group of Genomic Epidemiology and Multifactorial Diseases, Paris, France
| | - Florence Demenais
- Université Paris Cité, INSERM, UMR 1124, Group of Genomic Epidemiology and Multifactorial Diseases, Paris, France
| | - Catherine Laprise
- Basic Sciences department, Université du Québec à Chicoutimi, Saguenay, Québec, Canada, Centre intersectoriel en santé durable, Université du Québec à Chicoutimi, Saguenay, Québec, Canada
| | - Rachel Nadif
- Université Paris-Saclay, UVSQ, Univ. Paris-Sud, Inserm, Equipe d'Epidémiologie Respiratoire Intégrative, CESP, 94807, Villejuif, France
| | - Emmanuelle Bouzigon
- Université Paris Cité, INSERM, UMR 1124, Group of Genomic Epidemiology and Multifactorial Diseases, Paris, France.
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Raherison-Semjen C, Guilleminault L, Billiart I, Chenivesse C, De Oliveira A, Izadifar A, Lorenzo A, Nocent C, Oster JP, Padovani M, Perez T, Russier M, Steinecker M, Didier A. [Update of the 2021 recommendations for the management and follow-up of adult asthmatic patients under the guidance of the French Society of Pulmonology and the Paediatric Society of Pulmonology and Allergology. Long version]. Rev Mal Respir 2021; 38:1048-1083. [PMID: 34799211 DOI: 10.1016/j.rmr.2021.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 06/17/2021] [Indexed: 11/22/2022]
Affiliation(s)
- C Raherison-Semjen
- Université de Bordeaux, INSERM UMR 1219, Epicene Team, Bordeaux, France.
| | - L Guilleminault
- Pôle des voies respiratoires, CHU de Toulouse, Toulouse, France; Institut toulousain des maladies infectieuses et inflammatoires (Infinity), INSERM, UMR1291, CNRS UMR5051, université Toulouse III, CRISALIS F-CRIN, Toulouse, France
| | | | - C Chenivesse
- CHRU de Lille, service de pneumo-allergologie, 59000 Lille, France
| | - A De Oliveira
- Sorbonne université, département de médecine générale, Paris, France
| | - A Izadifar
- Département de pneumologie, centre cardiologique du Nord, Saint-Denis, France
| | - A Lorenzo
- Sorbonne université, département de médecine générale, Paris, France
| | - C Nocent
- CHG Côte Basque, Bayonne, France
| | - J P Oster
- Service de pneumologie, centre hospitalier Louis-Pasteur, Colmar, France
| | - M Padovani
- Espace Santé Ii, La Seyne-sur-Mer, France
| | - T Perez
- CHRU de Lille, service d'explorations fonctionnelles, 59000 Lille, France
| | - M Russier
- Service de pneumo-allergologie, CHR Orléans, Orléans, France
| | - M Steinecker
- Sorbonne université, département de médecine générale, Paris, France
| | - A Didier
- Université de Bordeaux, INSERM UMR 1219, Epicene Team, Bordeaux, France; Pôle des voies respiratoires, CHU de Toulouse, Toulouse, France
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Boinet T, Leroy-David C. [Asthma in adults]. ACTUALITES PHARMACEUTIQUES 2021; 60:13-17. [PMID: 33642669 PMCID: PMC7898985 DOI: 10.1016/j.actpha.2020.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
L’asthme est une pathologie chronique, hétérogène et fréquente des voies respiratoires, qui peut devenir handicapante et dont le coût socio-économique est important. Les stratégies thérapeutiques sont multiples et complexes. L’adhésion et l’observance du traitement sont souvent faibles. Le pharmacien d’officine peut mener des entretiens pharmaceutiques favorisant l’éducation thérapeutique et donc le contrôle de l’asthme.
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Affiliation(s)
- Tomas Boinet
- Centre municipal de santé, rue du Petit-Train, 72160 Connerré, France
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Abstract
BACKGROUND Previous investigations have illustrated that regulated upon activation, normal T-cell expressed and secreted (RANTES) polymorphisms are linked to susceptibility to childhood asthma; nevertheless, the findings continue to be controversial. Accordingly, we conducted the present meta-analysis to clarify the impact of RANTES genetic polymorphisms (-403G/A and -28C/G) on childhood asthma vulnerability. METHODS A search for published literature was performed using the PubMed, EMBASE, Chinese National Infrastructure, Cochrane Library, Scopus, Web of Science, and WanFang databases and selected in the form of PICOS (participants, interventions, comparisons, outcomes, and study design) to identify all eligible research works. The link between RANTES genetic polymorphisms and childhood asthma susceptibility was evaluated by a pooled odds ratio with a 95% confidence interval. RESULTS In total, 14 case-control studies were included in the analysis. No significant association existed between risk of childhood asthma and the -403G/A polymorphism subjected to any genetic framework in the overall population. In the stratified analysis, according to ethnicity, the -403G/A polymorphism was linked to augmented vulnerability to childhood asthma in Caucasians (allelic model: odds ratio [OR] = 1.63, 95% confidence interval [CI] = 1.04-2.57, P = .034; codominant model: OR = 2.20, 95% CI = 1.28-3.78, P = .004; dominant model: OR = 1.78, 95% CI = 1.01-3.13, P = .047; and recessive model: OR = 1.92, 95% CI = 1.11-3.30, P = .019). For the stratified analysis by atopic status, the -403G/A polymorphism was linked to augmented childhood asthma in the codominant (OR = 1.39, 95% CI = 1.02-1.91, P = .037) and dominant models (OR = 1.43, 95% CI = 1.02-2.01, P = .037) in atopic asthma. For the -28C/G polymorphism, there was a significant association between childhood asthma and the -28C/G variant (allelic model: OR = 1.33, 95% CI = 1.08-1.65, P = .009; codominant framework: OR = 2.14, 95% CI = 1.47-3.10, P < .001; dominant model: OR = 1.44, 95% CI = 1.07-1.93, P = .017; and recessive model: OR = 2.08, 95% CI = 1.44-3.02, P < .001). Stratified analysis based on ethnicity and the -28C/G polymorphism was linked to augmented vulnerability to childhood asthma in Asian and Caucasian populations. For the subgroup analysis by atopic status, no association was found in atopic and non-atopic asthma. CONCLUSION The present meta-analysis indicated that the RANTES -403G/A and -28C/G polymorphisms contributed to the development of childhood asthma.
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Ambrocio-Ortiz E, Galicia-Negrete G, Pérez-Rubio G, Escobar-Morales AJ, Abarca-Rojano E, Del Angel-Pablo AD, Castillejos-López MDJ, Falfán-Valencia R. Single Nucleotide and Copy-Number Variants in IL4 and IL13 Are Not Associated with Asthma Susceptibility or Inflammatory Markers: A Case-Control Study in a Mexican-Mestizo Population. Diagnostics (Basel) 2020; 10:E273. [PMID: 32366038 PMCID: PMC7277638 DOI: 10.3390/diagnostics10050273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 04/26/2020] [Accepted: 04/27/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Asthma is a complex and chronic inflammatory airway disease. Asthma's etiology is unknown; however, genetic and environmental factors could affect disease susceptibility. We designed a case-control study aimed to evaluate the role of single-nucleotide polymorphisms (SNP), and copy-number variants (CNV) in the IL4 and IL13 genes in asthma susceptibility and their participation in plasma cytokine levels depending on genotypes Methods: We include 486 subjects, divided into asthma patients (AP, n = 141) and clinically healthy subjects (CHS, n = 345). We genotyped three SNP, two in the IL4 and two in the IL13 gene; also, two CNVs in IL4. The IL-4, IL-13 and IgE plasma levels were quantified. RESULTS Biomass-burning smoke exposure was higher in the AP group compared to CHS (47.5% vs. 20.9%; p < 0.01, OR = 3.4). No statistical differences were found in the genetic association analysis. In both CNV, we only found the common allele. For the analysis of IL-4, IL-13, and IgE measures stratified by genotypes, no significant association or correlation was found. CONCLUSION In the Mexican-mestizo population, SNPs neither CNVs in IL4 nor IL13 are associated with asthma susceptibility or involved serum cytokine levels. Biomass-burning smoke is a risk factor in asthma susceptibility.
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Affiliation(s)
- Enrique Ambrocio-Ortiz
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Sección XVI, Mexico City 14080, Mexico; (E.A.-O.); (G.G.-N.); (G.P.-R.); (A.J.E.-M.); (A.D.D.A.-P.)
| | - Gustavo Galicia-Negrete
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Sección XVI, Mexico City 14080, Mexico; (E.A.-O.); (G.G.-N.); (G.P.-R.); (A.J.E.-M.); (A.D.D.A.-P.)
| | - Gloria Pérez-Rubio
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Sección XVI, Mexico City 14080, Mexico; (E.A.-O.); (G.G.-N.); (G.P.-R.); (A.J.E.-M.); (A.D.D.A.-P.)
| | - Areli J. Escobar-Morales
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Sección XVI, Mexico City 14080, Mexico; (E.A.-O.); (G.G.-N.); (G.P.-R.); (A.J.E.-M.); (A.D.D.A.-P.)
| | - Edgar Abarca-Rojano
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Casco de Santo Tomas, Mexico City 11340, Mexico;
| | - Alma D. Del Angel-Pablo
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Sección XVI, Mexico City 14080, Mexico; (E.A.-O.); (G.G.-N.); (G.P.-R.); (A.J.E.-M.); (A.D.D.A.-P.)
| | - Manuel D. J. Castillejos-López
- Epidemiological Surveillance Unit, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Sección XVI, Mexico City 14080, Mexico;
| | - Ramcés Falfán-Valencia
- HLA Laboratory, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Calzada de Tlalpan 4502, Sección XVI, Mexico City 14080, Mexico; (E.A.-O.); (G.G.-N.); (G.P.-R.); (A.J.E.-M.); (A.D.D.A.-P.)
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Long-term air pollution exposure is associated with increased severity of rhinitis in 2 European cohorts. J Allergy Clin Immunol 2020; 145:834-842.e6. [PMID: 31983528 DOI: 10.1016/j.jaci.2019.11.040] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 11/24/2019] [Accepted: 11/27/2019] [Indexed: 11/21/2022]
Abstract
BACKGROUND Very few studies have examined the association between long-term outdoor air pollution and rhinitis severity in adults. OBJECTIVE We sought to assess the cross-sectional association between individual long-term exposure to air pollution and severity of rhinitis. METHODS Participants with rhinitis from 2 multicenter European cohorts (Epidemiological Study on the Genetics and Environment on Asthma and the European Community Respiratory Health Survey) were included. Annual exposure to NO2, PM10, PM2.5, and PMcoarse (calculated by subtracting PM2.5 from PM10) was estimated using land-use regression models derived from the European Study of Cohorts for Air Pollution Effects project, at the participants' residential address. The score of rhinitis severity (range, 0-12), based on intensity of disturbance due to symptoms reported by questionnaire, was categorized into low (reference), mild, moderate, and high severity. Polytomous logistic regression models with a random intercept for city were used. RESULTS A total of 1408 adults with rhinitis (mean age, 52 years; 46% men, 81% from the European Community Respiratory Health Survey) were included. The median (1st quartile-3rd quartile) score of rhinitis severity was 4 (2-6). Higher exposure to PM10 was associated with higher rhinitis severity (adjusted odds ratio [95% CI] for a 10 μg/m3 increase in PM10: for mild: 1.20 [0.88-1.64], moderate: 1.53 [1.07-2.19], and high severity: 1.72 [1.23-2.41]). Similar results were found for PM2.5. Higher exposure to NO2 was associated with an increased severity of rhinitis, with similar adjusted odds ratios whatever the level of severity. Adjusted odds ratios were higher among participants without allergic sensitization than among those with, but interaction was found only for NO2. CONCLUSIONS: People with rhinitis who live in areas with higher levels of pollution are more likely to report more severe nasal symptoms. Further work is required to elucidate the mechanisms of this association.
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Havet A, Li Z, Zerimech F, Sanchez M, Siroux V, Le Moual N, Brunekreef B, Künzli N, Jacquemin B, Varraso R, Matran R, Nadif R. Does the oxidative stress play a role in the associations between outdoor air pollution and persistent asthma in adults? Findings from the EGEA study. Environ Health 2019; 18:90. [PMID: 31665023 PMCID: PMC6819357 DOI: 10.1186/s12940-019-0532-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 10/01/2019] [Indexed: 05/09/2023]
Abstract
BACKGROUND Evidences that oxidative stress plays a role in the associations between outdoor air pollution and asthma are growing. We aimed to study the role of plasma fluorescent oxidation products levels (FlOPs; an oxidative stress-related biomarker), as potential mediators, in the associations between outdoor air pollution and persistent asthma. METHODS Analyses were conducted in 204 adult asthmatics followed up in the French case-control and family study on asthma (EGEA; the Epidemiological study of the Genetic and Environmental factors of Asthma). Persistent asthma was defined as having current asthma at EGEA2 (baseline, 2003-2007) and EGEA3 (follow-up, 2011-2013). Exposures to nitrogen dioxide, nitrogen oxides, road traffic, particulate matter with a diameter ≤ 10 μm (PM10) and ≤ 2.5 μm were estimated by ESCAPE models (2009-2010), and ozone (O3) by IFEN models (2004). We used a mediation analysis to assess the mediated effect by FlOPs levels and the interaction between FlOPs levels and air pollution. RESULTS FlOPs levels increased with PM10 and O3 (adjusted β = 0.04 (95%CI 0.001-0.08), aβ = 0.04 (95%CI 0.009-0.07) per 10 μg/m3, respectively), and the risk of persistent asthma increased with FlOPs levels (aOR = 1.81 (95%CI 1.08-3.02)). The risk of persistent asthma decreased with exposures to NO2, NOx and PM2.5 (aOR ranging from 0.62 to 0.94), and increased with exposures to PM10, O3, O3-summer and road traffic, the greater effect being observed for O3 (aOR = 1.78, 95% CI 0.73-4.37, per 10 μg/m3). Using mediation analysis, we observed a positive total effect (aOR = 2.16, 95%CI 0.70-11.9), a positive direct effect of O3 on persistent asthma (OR = 1.68, 95%CI 0.57-7.25), and a positive indirect effect mediated by FIOPs levels (aOR = 1.28 (95%CI 1.01-2.29)) accounting for 41% of the total effect. CONCLUSIONS Our results add insights on the role of oxidative stress in the association between air pollution and persistent asthma.
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Affiliation(s)
- Anaïs Havet
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
| | - Zhen Li
- Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Farid Zerimech
- CHU de Lille, Laboratoire de Biochimie et Biologie Moléculaire, Pôle de Biologie Pathologie Génétique, Lille, France
| | - Margaux Sanchez
- ISGlobal, Centre for Research in Environmental Epidemiology, Universitat Pompeu Fabra, CIBER Epidemiología y Salud Pública, Barcelona, Spain
| | - Valérie Siroux
- Institute for Advanced Biosciences, Centre de recherche UGA-Inserm U1209 CNRS UMR 5309, équipe d’épidémiologie environnementale, Site Santé, Allée des Alpes, Grenoble, France
| | - Nicole Le Moual
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
| | - Bert Brunekreef
- Institute for Risk Assessment Sciences, University Utrecht, Utrecht, the Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Nino Künzli
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Bénédicte Jacquemin
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
| | - Raphaëlle Varraso
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
| | | | - Rachel Nadif
- INSERM U1168, VIMA: Aging and chronic diseases. Epidemiological and public health approaches, Villejuif, France
- Univ Versailles St-Quentin-en-Yvelines, UMRS 1168, Montigny-le-Bretonneux, France
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Al-Ghamdi BR, Koshak EA, Omer FM, Awadalla NJ, Mahfouz AA, Ageely HM. Immunological Factors Associated with Adult Asthma in the Aseer Region, Southwestern Saudi Arabia. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16142495. [PMID: 31336954 PMCID: PMC6678431 DOI: 10.3390/ijerph16142495] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/09/2019] [Accepted: 07/10/2019] [Indexed: 01/09/2023]
Abstract
Background: The prevalence of asthma is on the rise in Saudi Arabia. Data regarding the immunological profile of asthma in adults in the Aseer region, in southwestern Saudi Arabia, have not been well studied. Objectives: Our aim was to study the immunological factors associated with sensitization to asthma among adults in the Aseer region. Methods: A cross-sectional study with a nested case control design in a 1:1 ratio was conducted on a sample of adults attending primary health care centers in the Aseer region. The study used a validated Arabic version of the International study of asthma and allergies in childhood (ISAAC) questionnaire. The presence of wheezing in the past 12 months was used as a proxy for bronchial asthma. Matched age and sex controls were selected. Both groups were tested for complete blood count (CBC), total and differential white blood cell (WBC) count including eosinophils, total immunoglobulin E (IgE) measurement, allergen-specific immunoglobulin E (IgE), and cytokine levels. Results: The present study included 110 cases and 157 age- and sex-matched controls. Rye wheat was found to be a significant outdoor sensitizing agent ((odds ratio) OR = 5.23, 95% CI: 1.06–25.69). Indoors, house dust mites Dermatophagoides petronyssinus (OR = 2.04, 95% CI: 1.04–3.99) and Dermatophagoides farinae (OR = 2.50, 95% CI: 1.09–5.75) were significant. Higher total IgE (OR = 1.84, 95% CI: 1.10–3.06) and eosinophil levels (OR = 2.85, 95% CI: 1.14–7.15) were significantly associated with adult bronchial asthma in Aseer. On the other hand, the role of cytokines was not significant. Conclusions: In the present study, certain environmental agents were found to be important with regards to sensitization to bronchial asthma in adults. Knowledge about these sensitization agents should be disseminated to health providers and treating physicians in order to enhance preventive environmental control measures and asthma management. Asthma-treating physicians in the region should be alerted to the use of targeted biological therapies in selected asthmatics with difficult-to-control courses.
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Affiliation(s)
- Badr R Al-Ghamdi
- Department of Internal Medicine, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia.
| | - Emad A Koshak
- Department of Internal Medicine, College of Medicine, King Abdul Aziz University, Jeddah 21589, Saudi Arabia
| | - Fakhreldin M Omer
- Department of Clinical Microbiology, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia
| | - Nabil J Awadalla
- Department of Family and Community Medicine, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia
- Department of Community Medicine, College of Medicine Mansoura University, Mansoura 35516, Egypt
| | - Ahmed A Mahfouz
- Department of Family and Community Medicine, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia
- Department of Epidemiology, High Institute of Public Health, Alexandria University, Alexandria 21511, Egypt
| | - Hussein M Ageely
- Department of Internal Medicine, College of Medicine, Jazan University, Jazan 45142, Saudi Arabia
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11
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Zheng Y, Wang H, Luo L, Liao L, You L, Wang J, Li Q. A meta-analysis of the association between CTLA-4 genetic polymorphism and susceptibility of asthma. Medicine (Baltimore) 2018; 97:e11380. [PMID: 29995780 PMCID: PMC6076096 DOI: 10.1097/md.0000000000011380] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
BACKGROUND Numerous studies have reported an association between cytotoxic T-lymphocyte associated antigen 4 gene (CTLA4) polymorphism and susceptibility to asthma, in different populations, but the results have been inconsistent. We performed a meta-analysis of 19 published case-control studies to obtain a reasonably accurate estimation of the relationship between CTLA4 polymorphism and asthma. METHODS We searched the Pubmed, EMBASE, Chinese National Knowledge Infrastructure, and Wanfang databases and extracted data from 19 independent, eligible studies. Odds ratios (ORs) with 95% confidence intervals (CIs) and Egger test were separately used to assess the strength of associations and publication bias. RESULTS A total of 19 case-control studies involving 4831 cases and 4534 controls were identified. The combined results revealed that there was significant association between the +49A/G polymorphism and asthma (for GG + GA vs. AA: OR = 0.82, 95% CI = 0.70-0.97, P = .02). Stratification by race or age indicated a significant association between the CTLA-4 +49 GA+GG genotype and asthma in Asians (OR = 0.80, 95% CI = 0.68-0.95, P = .01) and children (OR = 0.75, 95% CI = 0.62-0.90, P = .002), but there was no association in whites (OR = 0.94, 95% CI = 0.80-1.10, P = .44) and adults (OR = 0.85, 95% CI = 0.68-1.06, P = .15). Additionally, there was a significant association with atopic asthma under the random-effects model (OR = 0.81, 95% CI = 0.67-0.98, P = .03). In addition, there was no significant association between the -318 C/T polymorphism and asthma risk. CONCLUSIONS Our meta-analysis results suggested that the +49A/G polymorphism in CTLA-4 was an important risk factor for asthma susceptibility, especially in Asian individuals, children, and atopic patients.
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Affiliation(s)
- Yan Zheng
- Department of Respiratory Diseases, Jiangxi Province People's Hospital, Nanchang
| | - Hongluan Wang
- Department of Respiratory Diseases, Jiangxi Province People's Hospital, Nanchang
| | - Linlin Luo
- Department of Respiratory Diseases, Jiangxi Province People's Hospital, Nanchang
| | - Liyang Liao
- Department of Hepatobiliary Surgery, Shangrao People's Hospital, Shangrao, China
| | - Luxia You
- Department of Respiratory Diseases, Jiangxi Province People's Hospital, Nanchang
| | - Jun Wang
- Department of Respiratory Diseases, Jiangxi Province People's Hospital, Nanchang
| | - Qiugen Li
- Department of Respiratory Diseases, Jiangxi Province People's Hospital, Nanchang
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12
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Burte E, Leynaert B, Bono R, Brunekreef B, Bousquet J, Carsin AE, De Hoogh K, Forsberg B, Gormand F, Heinrich J, Just J, Marcon A, Künzli N, Nieuwenhuijsen M, Pin I, Stempfelet M, Sunyer J, Villani S, Siroux V, Jarvis D, Nadif R, Jacquemin B. Association between air pollution and rhinitis incidence in two European cohorts. ENVIRONMENT INTERNATIONAL 2018; 115:257-266. [PMID: 29605678 DOI: 10.1016/j.envint.2018.03.021] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Revised: 03/14/2018] [Accepted: 03/15/2018] [Indexed: 05/22/2023]
Abstract
BACKGROUND The association between air pollution and rhinitis is not well established. AIM The aim of this longitudinal analysis was to study the association between modeled air pollution at the subjects' home addresses and self-reported incidence of rhinitis. METHODS We used data from 1533 adults from two multicentre cohorts' studies (EGEA and ECRHS). Rhinitis incidence was defined as reporting rhinitis at the second follow-up (2011 to 2013) but not at the first follow-up (2000 to 2007). Annual exposure to NO2, PM10 and PM2.5 at the participants' home addresses was estimated using land-use regression models developed by the ESCAPE project for the 2009-2010 period. Incidence rate ratios (IRR) were computed using Poisson regression. Pooled analysis, analyses by city and meta-regression testing for heterogeneity were carried out. RESULTS No association between long-term air pollution exposure and incidence of rhinitis was found (adjusted IRR (aIRR) for an increase of 10 μg·m-3 of NO2: 1.00 [0.91-1.09], for an increase of 5 μg·m-3 of PM2.5: 0.88 [0.73-1.04]). Similar results were found in the two-pollutant model (aIRR for an increase of 10 μg·m-3 of NO2: 1.01 [0.87-1.17], for an increase of 5 μg·m-3 of PM2.5: 0.87 [0.68-1.08]). Results differed depending on the city, but no regional pattern emerged for any of the pollutants. CONCLUSIONS This study did not find any consistent evidence of an association between long-term air pollution and incident rhinitis.
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Affiliation(s)
- Emilie Burte
- INSERM, U1168, VIMA: Aging and Chronic Diseases, Epidemiological and Public Health Approaches, Villejuif, France; Univ Versailles St-Quentin-en-Yvelines, UMR-S 1168, F-78180 Montigny le Bretonneux, France; ISGLoBAL, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain.
| | - Bénédicte Leynaert
- Inserm, UMR 1152, Pathophysiology and Epidemiology of Respiratory Diseases, Paris, France
| | - Roberto Bono
- Dept of Public Health and Pediatrics, University of Turin, Turin, Italy
| | - Bert Brunekreef
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands; Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Jean Bousquet
- INSERM, U1168, VIMA: Aging and Chronic Diseases, Epidemiological and Public Health Approaches, Villejuif, France; Univ Versailles St-Quentin-en-Yvelines, UMR-S 1168, F-78180 Montigny le Bretonneux, France; University Hospital, Montpellier, France; MACVIA-France, Contre les MAladies Chroniques pour un Vieillissement Actif en France, European Innovation Partnership on Active and Healthy Ageing Reference Site, Montpellier, France
| | - Anne-Elie Carsin
- ISGLoBAL, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Kees De Hoogh
- Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland
| | - Bertil Forsberg
- Environmental and Occupational Medicine, Dept of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | | | - Joachim Heinrich
- Ludwig Maximilians University Munich, University Hospital Munich, Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, Munich, Germany; Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research, Germany
| | - Jocelyne Just
- Allergology Department, Assistance Publique-Hôpitaux de Paris, Hôpital Armand-Trousseau, France; Université Paris 6 Pierre et Marie Curie, Paris, France
| | - Alessandro Marcon
- Unit of Epidemiology and Medical Statistics, Dept of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Nino Künzli
- Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland
| | - Mark Nieuwenhuijsen
- ISGLoBAL, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Isabelle Pin
- CHU de Grenoble Alpes, Pediatrie, Grenoble, France; Univ. Grenoble Alpes, Inserm, CNRS, IAB, 38000 Grenoble, France
| | - Morgane Stempfelet
- Santé Publique France, 12, rue du Val d'Osne, 94415 Saint-Maurice, France
| | - Jordi Sunyer
- ISGLoBAL, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - Simona Villani
- Unit of Biostatistics and Clinical Epidemiology, Dept of Public Health, Experimental and Forensic Medicine University of Pavia, Pavia, Italy
| | - Valérie Siroux
- Univ. Grenoble Alpes, Inserm, CNRS, IAB, 38000 Grenoble, France
| | - Deborah Jarvis
- Faculty of Medicine, School of Public Health, Imperial College London, London, United Kingdom
| | - Rachel Nadif
- INSERM, U1168, VIMA: Aging and Chronic Diseases, Epidemiological and Public Health Approaches, Villejuif, France; Univ Versailles St-Quentin-en-Yvelines, UMR-S 1168, F-78180 Montigny le Bretonneux, France
| | - Bénédicte Jacquemin
- INSERM, U1168, VIMA: Aging and Chronic Diseases, Epidemiological and Public Health Approaches, Villejuif, France; Univ Versailles St-Quentin-en-Yvelines, UMR-S 1168, F-78180 Montigny le Bretonneux, France; ISGLoBAL, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Spain; IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
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13
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Sugier PE, Brossard M, Sarnowski C, Vaysse A, Morin A, Pain L, Margaritte-Jeannin P, Dizier MH, Cookson WOCM, Lathrop M, Moffatt MF, Laprise C, Demenais F, Bouzigon E. A novel role for ciliary function in atopy: ADGRV1 and DNAH5 interactions. J Allergy Clin Immunol 2017; 141:1659-1667.e11. [PMID: 28927820 DOI: 10.1016/j.jaci.2017.06.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 05/30/2017] [Accepted: 06/21/2017] [Indexed: 12/30/2022]
Abstract
BACKGROUND Atopy, an endotype underlying allergic diseases, has a substantial genetic component. OBJECTIVE Our goal was to identify novel genes associated with atopy in asthma-ascertained families. METHODS We implemented a 3-step analysis strategy in 3 data sets: the Epidemiological Study on the Genetics and Environment of Asthma (EGEA) data set (1660 subjects), the Saguenay-Lac-Saint-Jean study data set (1138 subjects), and the Medical Research Council (MRC) data set (446 subjects). This strategy included a single nucleotide polymorphism (SNP) genome-wide association study (GWAS), the selection of related gene pairs based on statistical filtering of GWAS results, and text-mining filtering using Gene Relationships Across Implicated Loci and SNP-SNP interaction analysis of selected gene pairs. RESULTS We identified the 5q14 locus, harboring the adhesion G protein-coupled receptor V1 (ADGRV1) gene, which showed genome-wide significant association with atopy (rs4916831, meta-analysis P value = 6.8 × 10-9). Statistical filtering of GWAS results followed by text-mining filtering revealed relationships between ADGRV1 and 3 genes showing suggestive association with atopy (P ≤ 10-4). SNP-SNP interaction analysis between ADGRV1 and these 3 genes showed significant interaction between ADGRV1 rs17554723 and 2 correlated SNPs (rs2134256 and rs1354187) within the dynein axonemal heavy chain 5 (DNAH5) gene (Pmeta-int = 3.6 × 10-5 and 6.1 × 10-5, which met the multiple-testing corrected threshold of 7.3 × 10-5). Further conditional analysis indicated that rs2134256 alone accounted for the interaction signal with rs17554723. CONCLUSION Because both DNAH5 and ADGRV1 contribute to ciliary function, this study suggests that ciliary dysfunction might represent a novel mechanism underlying atopy. Combining GWAS and epistasis analysis driven by statistical and knowledge-based evidence represents a promising approach for identifying new genes involved in complex traits.
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Affiliation(s)
- Pierre-Emmanuel Sugier
- Genetic Variation and Human Diseases Unit, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France; Université Pierre et Marie Curie, Paris, France
| | - Myriam Brossard
- Genetic Variation and Human Diseases Unit, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
| | - Chloé Sarnowski
- Genetic Variation and Human Diseases Unit, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
| | - Amaury Vaysse
- Genetic Variation and Human Diseases Unit, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
| | - Andréanne Morin
- McGill University and Génome Québec Innovation Centre, Montreal, Quebec, Canada; Département des Sciences Fondamentales, Université du Québec à Chicoutimi, Chicoutimi, Quebec, Canada
| | - Lucile Pain
- Département des Sciences Fondamentales, Université du Québec à Chicoutimi, Chicoutimi, Quebec, Canada
| | - Patricia Margaritte-Jeannin
- Genetic Variation and Human Diseases Unit, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
| | - Marie-Hélène Dizier
- Genetic Variation and Human Diseases Unit, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
| | - William O C M Cookson
- Section of Genomic Medicine, National Heart and Lung Institute, London, United Kingdom
| | - Mark Lathrop
- McGill University and Génome Québec Innovation Centre, Montreal, Quebec, Canada
| | - Miriam F Moffatt
- Section of Genomic Medicine, National Heart and Lung Institute, London, United Kingdom
| | - Catherine Laprise
- Département des Sciences Fondamentales, Université du Québec à Chicoutimi, Chicoutimi, Quebec, Canada
| | - Florence Demenais
- Genetic Variation and Human Diseases Unit, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France.
| | - Emmanuelle Bouzigon
- Genetic Variation and Human Diseases Unit, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
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14
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Cheung WA, Shao X, Morin A, Siroux V, Kwan T, Ge B, Aïssi D, Chen L, Vasquez L, Allum F, Guénard F, Bouzigon E, Simon MM, Boulier E, Redensek A, Watt S, Datta A, Clarke L, Flicek P, Mead D, Paul DS, Beck S, Bourque G, Lathrop M, Tchernof A, Vohl MC, Demenais F, Pin I, Downes K, Stunnenberg HG, Soranzo N, Pastinen T, Grundberg E. Functional variation in allelic methylomes underscores a strong genetic contribution and reveals novel epigenetic alterations in the human epigenome. Genome Biol 2017; 18:50. [PMID: 28283040 PMCID: PMC5346261 DOI: 10.1186/s13059-017-1173-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 02/17/2017] [Indexed: 01/24/2023] Open
Abstract
Background The functional impact of genetic variation has been extensively surveyed, revealing that genetic changes correlated to phenotypes lie mostly in non-coding genomic regions. Studies have linked allele-specific genetic changes to gene expression, DNA methylation, and histone marks but these investigations have only been carried out in a limited set of samples. Results We describe a large-scale coordinated study of allelic and non-allelic effects on DNA methylation, histone mark deposition, and gene expression, detecting the interrelations between epigenetic and functional features at unprecedented resolution. We use information from whole genome and targeted bisulfite sequencing from 910 samples to perform genotype-dependent analyses of allele-specific methylation (ASM) and non-allelic methylation (mQTL). In addition, we introduce a novel genotype-independent test to detect methylation imbalance between chromosomes. Of the ~2.2 million CpGs tested for ASM, mQTL, and genotype-independent effects, we identify ~32% as being genetically regulated (ASM or mQTL) and ~14% as being putatively epigenetically regulated. We also show that epigenetically driven effects are strongly enriched in repressed regions and near transcription start sites, whereas the genetically regulated CpGs are enriched in enhancers. Known imprinted regions are enriched among epigenetically regulated loci, but we also observe several novel genomic regions (e.g., HOX genes) as being epigenetically regulated. Finally, we use our ASM datasets for functional interpretation of disease-associated loci and show the advantage of utilizing naïve T cells for understanding autoimmune diseases. Conclusions Our rich catalogue of haploid methylomes across multiple tissues will allow validation of epigenome association studies and exploration of new biological models for allelic exclusion in the human genome. Electronic supplementary material The online version of this article (doi:10.1186/s13059-017-1173-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Warren A Cheung
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - Xiaojian Shao
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - Andréanne Morin
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - Valérie Siroux
- Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, Inserm U1209, CNRS, University Grenoble Alpes, Institute for Advanced Biosciences, Grenoble, France
| | - Tony Kwan
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - Bing Ge
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - Dylan Aïssi
- Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, Inserm U1209, CNRS, University Grenoble Alpes, Institute for Advanced Biosciences, Grenoble, France
| | - Lu Chen
- Department of Human Genetics, The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1HH, UK.,Department of Haematology, University of Cambridge, Cambridge Biomedical Campus, Long Road, Cambridge, CB2 0PT, UK
| | - Louella Vasquez
- Department of Human Genetics, The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1HH, UK
| | - Fiona Allum
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - Frédéric Guénard
- Institute of Nutrition and Functional Foods (INAF), Laval University, Québec, QC, G1V 0A6, Canada
| | - Emmanuelle Bouzigon
- Genetic Variation and Human Diseases Unit, UMR-946, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
| | | | - Elodie Boulier
- McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - Adriana Redensek
- McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - Stephen Watt
- Department of Human Genetics, The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1HH, UK
| | - Avik Datta
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SD, UK
| | - Laura Clarke
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SD, UK
| | - Paul Flicek
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SD, UK
| | - Daniel Mead
- Department of Human Genetics, The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1HH, UK
| | - Dirk S Paul
- UCL Cancer Institute, University College London, 72 Huntley Street, London, WC1E 6BT, UK.,Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, Strangeways Research Laboratory, Worts Causeway, Cambridge, CB1 8RN, UK
| | - Stephan Beck
- UCL Cancer Institute, University College London, 72 Huntley Street, London, WC1E 6BT, UK
| | - Guillaume Bourque
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - Mark Lathrop
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada.,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada
| | - André Tchernof
- Québec Heart and Lung Institute, Laval University, Québec, QC, G1V 4G5, Canada
| | - Marie-Claude Vohl
- Institute of Nutrition and Functional Foods (INAF), Laval University, Québec, QC, G1V 0A6, Canada
| | - Florence Demenais
- Genetic Variation and Human Diseases Unit, UMR-946, INSERM, Université Paris Diderot, Université Sorbonne Paris Cité, Paris, France
| | - Isabelle Pin
- Team of Environmental Epidemiology applied to Reproduction and Respiratory Health, Inserm U1209, CNRS, University Grenoble Alpes, Institute for Advanced Biosciences, Grenoble, France.,Pédiatrie, Centre Hospitalier Universitaire (CHU) Grenoble Alpes, Grenoble, France
| | - Kate Downes
- Department of Haematology, University of Cambridge, Cambridge Biomedical Campus, Long Road, Cambridge, CB2 0PT, UK.,National Health Service (NHS) Blood and Transplant, Cambridge Biomedical Campus, Long Road, Cambridge, CB2 0PT, UK
| | - Hendrick G Stunnenberg
- Faculty of Science, Department of Molecular Biology, Radboud University, Nijmegen, 6525GA, The Netherlands
| | - Nicole Soranzo
- Department of Human Genetics, The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, CB10 1HH, UK.,Department of Haematology, University of Cambridge, Cambridge Biomedical Campus, Long Road, Cambridge, CB2 0PT, UK.,British Heart Foundation Centre of Excellence, Division of Cardiovascular Medicine, Addenbrooke's Hospital, Hills Road, Cambridge, CB2 0QQ, UK.,The National Institute for Health Research Blood and Transplant Unit (NIHR BTRU) in Donor Health and Genomics, University of Cambridge, Strangeways Research Laboratory, Wort's Causeway, Cambridge, CB1 8RN, UK
| | - Tomi Pastinen
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada. .,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada.
| | - Elin Grundberg
- Department of Human Genetics, McGill University, Montreal, Quebec, Canada. .,McGill University and Genome Quebec Innovation Centre, Montreal, Quebec, Canada.
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15
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Nadif R, Siroux V, Boudier A, le Moual N, Just J, Gormand F, Pison C, Matran R, Pin I. Blood granulocyte patterns as predictors of asthma phenotypes in adults from the EGEA study. Eur Respir J 2016; 48:1040-1051. [PMID: 27492832 DOI: 10.1183/13993003.00336-2016] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 06/13/2016] [Indexed: 12/25/2022]
Abstract
To what extent blood granulocyte patterns may predict asthma control remains under-studied. Our aim was to study associations between blood neutrophilia and eosinophilia and asthma control outcomes in adults.Analyses were conducted in 474 asthmatics from the first follow-up of the Epidemiological Study on the Genetics and Environment of Asthma (EGEA2), including 242 asthmatics who were adults a decade earlier (EGEA1). At EGEA2, asthma control was assessed using the Global Initiative for Asthma definition (2015), and asthma exacerbations by use of urgent care or courses of oral corticosteroids in the past year. Blood EOSlo/EOShi was defined as </≥250 eosinophils·mm-3, respectively, and NEUlo/NEUhi as </≥5000 neutrophils·mm-3, respectively. Estimates were adjusted for age, sex and smoking.At EGEA2, NEUhi was associated with asthma exacerbations and poor asthma control (OR >2.10). EOShi was associated with higher bronchial hyperresponsiveness (BHR) (OR (95% CI) 2.21 (1.24-3.97)), poor lung function (p=0.02) and higher total IgE level (p=0.002). Almost 50% of asthmatics had a persistent pattern between surveys. Persistent NEUhi was associated with poor asthma control at EGEA2 (OR (95% CI) 3.09 (1.18-7.05)). EOShi at EGEA1 and persistent EOShi were associated with higher BHR (OR (95% CI) 2.36 (1.10-5.07) and 3.85 (1.11-13.34), respectively), poor lung function (p<0.06) and higher immunoglobulin E level (p<10-4) at EGEA2.Granulocyte patterns were differently associated with asthma outcomes, suggesting specific roles for each one, which could be tested as predictive signatures.
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Affiliation(s)
- Rachel Nadif
- INSERM, U1168, VIMA: Ageing and Chronic Diseases, Epidemiological and Public Health Approaches, Villejuif, France Univ Versailles St-Quentin-en-Yvelines, UMR-S 1168, Montigny le Bretonneux, France
| | - Valérie Siroux
- INSERM, IAB, Team of Environmental Epidemiology Applied to Reproduction and Respiratory Health, Grenoble, France Univ Grenoble Alpes, Grenoble, France CHU de Grenoble, Pédiatrie, Grenoble, France
| | - Anne Boudier
- INSERM, IAB, Team of Environmental Epidemiology Applied to Reproduction and Respiratory Health, Grenoble, France Univ Grenoble Alpes, Grenoble, France CHU de Grenoble, Pédiatrie, Grenoble, France
| | - Nicole le Moual
- INSERM, U1168, VIMA: Ageing and Chronic Diseases, Epidemiological and Public Health Approaches, Villejuif, France Univ Versailles St-Quentin-en-Yvelines, UMR-S 1168, Montigny le Bretonneux, France
| | - Jocelyne Just
- Centre de l'Asthme et des Allergies, APHP, Hôpital Trousseau, UMPC Paris 6, Paris, France
| | | | - Christophe Pison
- Clinique Universitaire de Pneumologie, Pôle Thorax et Vaisseaux, CHU Grenoble, Grenoble, France INSERM U1055, Grenoble, France Univ Grenoble Alpes, Grenoble, France
| | | | - Isabelle Pin
- INSERM, IAB, Team of Environmental Epidemiology Applied to Reproduction and Respiratory Health, Grenoble, France Univ Grenoble Alpes, Grenoble, France CHU de Grenoble, Pédiatrie, Grenoble, France
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