Ward-Caviness, C.K. ; Neas, L.M.* ; Blach, C.* ; Haynes, C.S.* ; LaRocque-Abramson, K.* ; Grass, E.* ; Elaine Dowdy, Z.* ; Devlin, R.B.* ; Diaz-Sanchez, D.* ; Cascio, W.E.* ; Miranda, M.L.* ; Gregory, S.G.* ; Shah, S.H.* ; Kraus, W.E.* ; Hauser, E.R.*
     
    
        
A genome-wide trans-ethnic interaction study links the PIGR-FCAMR locus to coronary atherosclerosis via interactions between genetic variants and residential exposure to traffic.
    
    
        
    
    
        
        PLoS ONE 12:e0173880 (2017)
    
    
    
      
      
	
	    Air pollution is a worldwide contributor to cardiovascular disease mortality and morbidity. Traffic-related air pollution is a widespread environmental exposure and is associated with multiple cardiovascular outcomes such as coronary atherosclerosis, peripheral arterial disease, and myocardial infarction. Despite the recognition of the importance of both genetic and environmental exposures to the pathogenesis of cardiovascular disease, studies of how these two contributors operate jointly are rare. We performed a genome-wide interaction study (GWIS) to examine gene-traffic exposure interactions associated with coronary atherosclerosis. Using race-stratified cohorts of 538 African-Americans (AA) and 1562 European-Americans (EA) from a cardiac catheterization cohort (CATHGEN), we identify gene-by-traffic exposure interactions associated with the number of significantly diseased coronary vessels as a measure of chronic atherosclerosis. We found five suggestive (P<1x10-5) interactions in the AA GWIS, of which two (rs1856746 and rs2791713) replicated in the EA cohort (P < 0.05). Both SNPs are in the PIGR-FCAMR locus and are eQTLs in lymphocytes. The protein products of both PIGRand FCAMRare implicated in inflammatory processes. In the EA GWIS, there were three suggestive interactions; none of these replicated in the AA GWIS. All three were intergenic; the most significant interaction was in a regulatory region associated with SAMSN1, a gene previously associated with atherosclerosis and B cell activation. In conclusion, we have uncovered several novel genes associated with coronary atherosclerosis in individuals chronically exposed to increased ambient concentrations of traffic air pollution. These genes point towards inflammatory pathways that may modify the effects of air pollution on cardiovascular disease risk.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Peripheral Arterial-disease; Heinz-nixdorf Recall; Air-pollution; Heart-disease; Cardiovascular-disease; Environment Interactions; Ultrafine Particles; Association; Roadway; Risk
    
 
    
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        Publication Year
        2017
    
 
    
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        2017
    
 
    
    
        ISSN (print) / ISBN
        1932-6203
    
 
    
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	    Volume: 12,  
	    Issue: 3,  
	    Pages: ,  
	    Article Number: e0173880 
	    Supplement: ,  
	
    
 
    
        
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            Public Library of Science (PLoS)
        
 
        
            Publishing Place
            Lawrence, Kan.
        
 
	
        
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        Peer reviewed
    
 
    
        Institute(s)
        Institute of Epidemiology (EPI)
    
 
    
        POF-Topic(s)
        30501 - Systemic Analysis of Genetic and Environmental Factors that Impact Health
    
 
    
        Research field(s)
        Genetics and Epidemiology
    
 
    
        PSP Element(s)
        G-504000-005
    
 
    
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        Erfassungsdatum
        2017-04-26