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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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Long-term exposure to particulate air pollution and brachial artery flow-mediated dilation in the Old Order Amish
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Journal Article
Long-term exposure to particulate air pollution and brachial artery flow-mediated dilation in the Old Order Amish
2020
Overview
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 (PM
2.5
) and PM < 10 μm (PM
10
) 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 PM
10
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 PM
2.5
were also strongest for a 12-month moving average but were weaker than for PM
10
(− 0.07; 95% CI: − 0.13, − 0.09). Associations of PM
2.5
and PM
10
with FMD were somewhat stronger in men than in women, particularly for PM
10
.
Conclusions
Using location-specific moving-average air pollution exposure estimates, we have shown that 12-month moving-average estimates of PM
2.5
and PM
10
exposure are associated with impaired endothelial function in a rural population.
Publisher
BioMed Central,BioMed Central Ltd,Springer Nature B.V,BMC
Subject
/ Age
/ Aged
/ Air Pollutants - adverse effects
/ Amish
/ Amish - statistics & numerical data
/ Analysis
/ Brachial Artery - drug effects
/ Brachial Artery - physiology
/ Dilation
/ Earth and Environmental Science
/ Endothelial function, Cardiovascular disease
/ Environmental Exposure - adverse effects
/ Exposure
/ Female
/ Geographic information systems
/ Heart
/ Humans
/ Male
/ Occupational Medicine/Industrial Medicine
/ Particulate Matter - adverse effects
/ Rural Population - statistics & numerical data
/ Seasons
/ Smoking
/ Studies
/ Velocity
