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The Relationship between Traffic-Related Air Pollution Exposures and Allostatic Load Score among Youth with Type 1 Diabetes in the SEARCH Cohort
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6 2021
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Source: Environ Res. 197:111075
[PDF-337.68 KB]
Details:
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Alternative Title:Environ Res
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Personal Author:
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Description:Objective:
We investigated the effects of chronic exposures to particulate and traffic-related air pollution on allostatic load (AL) score, a marker of cumulative biological risk, among youth with type 1 diabetes.
Research Design and Methods:
Participants were drawn from five clinical sites of the SEARCH for Diabetes in Youth (SEARCH) study (n=2,338). Baseline questionnaires, anthropometric measures, and a fasting blood test were taken at a clinic visit between 2001 and 2005. AL was operationalized using 10 biomarkers reflecting cardiovascular, metabolic, and inflammatory risk. Annual residential exposures to PM2.5 and proximity to heavily-trafficked major roadways were estimated for each participant. Poisson regression models adjusted for sociodemographic and lifestyle factors were conducted for each exposure.
Results:
No significant associations were observed between exposures to PM2.5 or proximity to traffic and AL score, however analyses were suggestive of effect modification by race for residential distance to heavily-trafficked major roadways (p=0.02). In stratified analyses, residing <100, 100-<200 and 200-<400 m compared to 400 m or more from heavily-trafficked major roadways was associated with 11%, 26% and 14% increases in AL score, respectively (95% CIs: −4, 29; 9, 45.0; −1, 30) for non-white participants compared to 6%, −2%, and −2% changes (95% CIs: −2, 15; −10, 7; −8, 6) for white participants.
Conclusions:
Among this population of youth with type 1 diabetes, we did not observe consistent relationships between chronic exposures to particulate and traffic-related air pollution and changes in AL score, however associations for traffic-related pollution exposures may differ by race/ethnicity and warrant further examination.
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Pubmed ID:33798519
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Pubmed Central ID:PMC8187288
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Funding:
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Volume:197
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