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Ambient Coarse Particulate Matter and the Right Ventricle: The Multi-Ethnic Study of Atherosclerosis.
- Source :
- Environmental Health Perspectives; Jul2017, Vol. 125 Issue 7, p1-8, 8p, 2 Charts, 1 Graph
- Publication Year :
- 2017
-
Abstract
- BACKGROUND: Coarse particulate matter (PM<subscript>10-2.5</subscript>) is primarily mechanically generated and includes crustal material, brake and tire wear, and biological particles. PM<subscript>10-2.5</subscript> is associated with pulmonary disease, which can lead to right ventricular (RV) dysfunction. Although RV characteristics have been associated with combustion-related pollutants, relationships with PM<subscript>10-2.5</subscript> remain unknown. OBJECTIVES: To quantify cross-sectional associations between RV dysfunction and PM<subscript>10-2.5</subscript> mass and components among older adults and susceptible populations. METHODS: We used baseline cardiac magnetic resonance images from 1,490 participants (45-84 y old) from the Multi-Ethnic Study of Atherosclerosis and assigned 5-y residential concentrations of PM<subscript>10-2.5</subscript> mass, copper, zinc, phosphorus, silicon, and endotoxin, using land-use regression models. We quantified associations with RV mass, end-diastolic volume, and ejection fraction after control for risk factors and copollutants using linear regression. We further examined personal susceptibility. RESULTS: We found positive associations of RV mass and, to a lesser extent, end diastolic volume with PM<subscript>10-2.5</subscript> mass among susceptible populations including smokers and persons with emphysema. After adjustment for copollutants, an interquartile range increase in PM<subscript>10-2.5</subscript> mass (2:2 μg/m³) was associated with 0:5 g (95% CI: 0.0, 1.0), 0:9 g (95% CI: 0.1, 1.7), and 1:4 g (95% CI: 0.4, 2.5) larger RV mass among former smokers, current smokers, and persons with emphysema, respectively. No associations were found with healthy individuals or with ejection fraction. CONCLUSIONS: Alterations to RV structure may represent a mechanism by which long-term PM<subscript>10-2.5</subscript> exposure increases risks for adverse respiratory and cardiovascular outcomes, especially among certain susceptible populations. [ABSTRACT FROM AUTHOR]
- Subjects :
- HEART ventricle diseases
CONFIDENCE intervals
COPPER
DISEASE susceptibility
PULMONARY emphysema
ENDOTOXINS
RIGHT heart ventricle
LONGITUDINAL method
MAGNETIC resonance imaging
MEDICAL cooperation
MULTIVARIATE analysis
PHOSPHORUS
PROBABILITY theory
REGRESSION analysis
RESEARCH
RESEARCH funding
SILICON
SMOKING
ZINC
ENVIRONMENTAL exposure
PARTICULATE matter
CROSS-sectional method
DATA analysis software
DESCRIPTIVE statistics
STROKE volume (Cardiac output)
VENTRICULAR ejection fraction
Subjects
Details
- Language :
- English
- ISSN :
- 00916765
- Volume :
- 125
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Environmental Health Perspectives
- Publication Type :
- Academic Journal
- Accession number :
- 124428644
- Full Text :
- https://doi.org/10.1289/EHP658