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National Institute of Environmental Health Sciences

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Your Environment. Your Health.

Publication Detail

Title: Longitudinal Associations Between Ambient Air Pollution With Insulin Sensitivity, β-Cell Function, and Adiposity in Los Angeles Latino Children.

Authors: Alderete, Tanya L; Habre, Rima; Toledo-Corral, Claudia M; Berhane, Kiros; Chen, Zhanghua; Lurmann, Frederick W; Weigensberg, Marc J; Goran, Michael I; Gilliland, Frank D

Published In Diabetes, (2017 07)

Abstract: Evidence suggests that ambient air pollution (AAP) exposure may contribute to the development of obesity and type 2 diabetes. The objective of this study was to determine whether exposure to elevated concentrations of nitrogen dioxide (NO2) and particulate matter with aerodynamic diameter <2.5 (PM2.5) had adverse effects on longitudinal measures of insulin sensitivity (SI), β-cell function, and obesity in children at high risk for developing diabetes. Overweight and obese Latino children (8-15 years; n = 314) were enrolled between 2001 and 2012 from Los Angeles, CA, and followed for an average of 3.4 years (SD 3.1 years). Linear mixed-effects models were fitted to assess relationships between AAP exposure and outcomes after adjusting for covariates including body fat percent. Higher NO2 and PM2.5 were associated with a faster decline in SI and a lower SI at age 18 years, independent of adiposity. NO2 exposure negatively affected β-cell function, evidenced by a faster decline in disposition index (DI) and a lower DI at age 18 years. Higher NO2 and PM2.5 exposures over follow-up were also associated with a higher BMI at age 18 years. AAP exposure may contribute to development of type 2 diabetes through direct effects on SI and β-cell function.

PubMed ID: 28137791 Exiting the NIEHS site

MeSH Terms: Adiposity; Adolescent; Air Pollution/statistics & numerical data*; Blood Glucose/metabolism; Body Mass Index; Child; Diabetes Mellitus, Type 2/epidemiology; Diabetes Mellitus, Type 2/metabolism; Environmental Exposure/statistics & numerical data*; Female; Hispanic or Latino/statistics & numerical data*; Humans; Insulin Resistance*; Insulin-Secreting Cells/metabolism*; Insulin/metabolism; Linear Models; Longitudinal Studies; Los Angeles/epidemiology; Male; Nitrogen Dioxide*; Particulate Matter*; Pediatric Obesity/epidemiology*; Pediatric Obesity/metabolism

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