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 language | English |
---|---|
Article number | OA2946 |
Journal | European Respiratory Journal |
Volume | 50 |
Issue number | suppl 61 |
DOIs | |
Publication status | Published - 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