DNA methylation mediates the association between occupational exposures and lung function

Diana Van Der Plaat, Maaike De Vries, Sacha Bastide-Van Gemert, Kim De Jong, Cleo Van Diemen, Ivana Nedeljkovic, Najaf Amin, Hans Kromhout, Roel Vermeulen, Dirkje Postma, Cornelia Van Duijn, Judith Vonk, Marike Boezen

    Research output: Contribution to journalMeeting AbstractAcademic

    Abstract

    Introduction: Occupational exposures, such as biological dust, mineral dust and gases/fumes, are associated with lower lung function levels and attribute to 15-20% of all Chronic Obstructive Pulmonary Disease (COPD) cases. Epigenetic mechanisms such as DNA methylation have been suggested to play a role in these associations. Aim: To assess if the association between occupational exposures and lung function (FEV /FVC) is mediated by DNA methylation. Methods: We included 1,561 subjects of the LifeLines cohort with either no, low, or high occupational exposure to biological dust, mineral dust and gases/fumes based on the current or last held job. Associations between the three exposures and 420,938 blood DNA methylation sites (CpGs, Illumina 450K array) were assessed using robust linear regression adjusted for appropriate confounders. Differentially methylated regions (DMRs) were identified using comb-p in python. Mediation of the top site per region was assessed using bootstrapping in R. Results: Using p
    Original languageEnglish
    Article numberOA2946
    JournalEuropean Respiratory Journal
    Volume50
    Issue numbersuppl 61
    DOIs
    Publication statusPublished - 1 Sept 2017

    Keywords

    • biological product
    • endogenous compound
    • galectin 3
    • glucocorticoid receptor
    • adult
    • bootstrapping
    • chronic obstructive lung disease
    • cohort analysis
    • conference abstract
    • controlled study
    • DNA methylation
    • epigenetics
    • female
    • forced vital capacity
    • fume
    • gas
    • genome
    • human
    • immune response
    • linear regression analysis
    • lung function
    • major clinical study
    • male
    • mineral dust
    • occupational exposure
    • promoter region

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