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    Long-term exposure to particulate air pollution and brachial artery flow-mediated dilation in the Old Order Amish

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    Author
    Salimi, S.
    Vogel, R.
    Mitchell, B.D.
    Date
    2020
    Journal
    Environmental Health: A Global Access Science Source
    Publisher
    BioMed Central Ltd.
    Type
    Article
    
    Metadata
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    See at
    https://doi.org/10.1186/s12940-020-00593-y
    Abstract
    Background: Atmospheric particulate matter (PM) has been associated with endothelial dysfunction, an early marker of cardiovascular risk. Our aim was to extend this research to a genetically homogenous, geographically stable rural population using location-specific moving-average air pollution exposure estimates indexed to the date of endothelial function measurement. Methods: We measured endothelial function using brachial artery flow-mediated dilation (FMD) in 615 community-dwelling healthy Amish participants. Exposures to PM < 2.5 μm (PM2.5) and PM < 10 μm (PM10) were estimated at participants' residential addresses using previously developed geographic information system-based spatio-temporal models and normalized. Associations between PM exposures and FMD were evaluated using linear mixed-effects regression models, and polynomial distributed lag (PDL) models followed by Bayesian model averaging (BMA) were used to assess response to delayed effects occurring across multiple months. Results: Exposure to PM10 was consistently inversely associated with FMD, with the strongest (most negative) association for a 12-month moving average (- 0.09; 95% CI: - 0.15, - 0.03). Associations with PM2.5 were also strongest for a 12-month moving average but were weaker than for PM10 (- 0.07; 95% CI: - 0.13, - 0.09). Associations of PM2.5 and PM10 with FMD were somewhat stronger in men than in women, particularly for PM10. Conclusions: Using location-specific moving-average air pollution exposure estimates, we have shown that 12-month moving-average estimates of PM2.5 and PM10 exposure are associated with impaired endothelial function in a rural population. Copyright 2020 The Author(s).
    Keyword
    Air pollution
    Cardiovascular disease
    Endothelial function
    Particulate matter
    Identifier to cite or link to this item
    https://www.scopus.com/inward/record.uri?eid=2-s2.0-85084859410&doi=10.1186%2fs12940-020-00593-y&partnerID=40&md5=ee42eb21b7c3ed3aab4f3bc5757c4e07; http://hdl.handle.net/10713/12884
    ae974a485f413a2113503eed53cd6c53
    10.1186/s12940-020-00593-y
    Scopus Count
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