Air pollution-associated changes in biomarkers of diabetes risk.

Journal Article (Journal Article)

Background

Ambient particulate matter (PM) and nitrogen oxide (NOx ) air pollution may be diabetogenic.

Objective

To examine longitudinal associations of short- and longer-term mean PM ≤10 μm (PM10 ), PM ≤2.5 μm (PM2.5 ), and NOx concentrations with five biomarkers of diabetes risk.

Methods

We studied a stratified, random minority oversample of nondiabetic Women's Health Initiative clinical trials participants with biomarkers and geocoded participant address-specific mean air pollution concentrations available at repeated visits (years = 1993-2004; n = 3,915; mean age = 62.7 years; 84% white). We log-transformed the biomarkers, then used multi-level, mixed-effects, longitudinal models weighted for sampling design/attrition and adjusted for sociodemographic, clinical, and meteorological covariates to estimate their associations with air pollutants.

Results

Biomarkers exhibited null to suggestively negative associations with short- and longer-term PM10 and NOx concentrations, e.g., -3.1% (-6.1%, 0.1%), lower homeostatic model assessment of insulin resistance per 10 μg/m3 increase in 12-month PM10 . A statistically significant interaction by impaired fasting glucose (IFG) at baseline in this analysis indicated potentially adverse effects only among women with versus without IFG, i.e., 1.4% (-3.5%, 6.5%) versus -4.6% (-7.9%, -1.1%), P interaction < 0.05. In contrast, longer-term PM2.5 concentrations were largely but not statistically significantly associated with higher biomarkers.

Conclusions

Low-level short-term PM10 and NOx concentrations may have negligible adverse effects on biomarkers of diabetes risk. Although longer-term mean PM2.5 concentrations showed primarily null associations with these biomarkers, results suggestively indicated that PM2.5 exposure over the range of concentrations experienced in the United States may adversely affect biomarkers of diabetes risk at the population level, as may longer-term mean PM10 concentrations among women with IFG.

Full Text

Duke Authors

Cited Authors

  • Holliday, KM; Lamichhane, AP; Gondalia, R; Stewart, JD; Madrigano, J; Shih, RA; Yanosky, JD; Liao, D; Wellenius, GA; Whitsel, EA

Published Date

  • August 13, 2019

Published In

Volume / Issue

  • 3 / 4

Start / End Page

  • e059 -

Pubmed Central ID

  • 31538138

Electronic International Standard Serial Number (EISSN)

  • 2474-7882

International Standard Serial Number (ISSN)

  • 2474-7882

Digital Object Identifier (DOI)

  • 10.1097/ee9.0000000000000059

Language

  • eng