Air pollution and lung function in minority youth with asthma in the GALA II (Genesenvironments and admixture in Latino Americans) and SAGE II (study of African Americans, asthma, genes, and environments) studies

Andreas M. Neophytou*, Marquitta J. White, Sam S. Oh, Neeta Thakur, Joshua M. Galanter, Katherine K. Nishimura, Maria Pino-Yanes, Dara G. Torgerson, Christopher R. Gignoux, Celeste Eng, Elizabeth A. Nguyen, Donglei Hu, Angel C. Mak, Rajesh Kumar, Max A. Seibold, Adam Davis, Harold J. Farber, Kelley Meade, Pedro C. Avila, Denise SerebriskyMichael A. Lenoir, Emerita Brigino-Buenaventura, William Rodriguez-Cintron, Kirsten Bibbins-Domingo, Shannon M. Thyne, L. Keoki Williams, Saunak Sen, Frank D. Gilliland, W. James Gauderman, Jose R. Rodriguez-Santana, Fred Lurmann, John R. Balmes, Ellen A. Eisen, Esteban G. Burchard

*Corresponding author for this work

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

Rationale: Adverse effects of exposures to ambient air pollution on lung function are well documented, but evidence in racial/ethnic minority children is lacking. Objectives: To assess the relationship between air pollution and lung function in minority children with asthma and possible modification by global genetic ancestry. Methods: The study population consisted of 1,449 Latino and 519 African American children with asthma from five different geographical regions in the mainland United States and Puerto Rico. We examined five pollutants (particulate matter <10 mm and <2.5 mm in diameter, ozone, nitrogen dioxide, and sulfur dioxide), derived from participant residential history and ambient air monitoring data, and assessed over several time windows. We fit generalized additive models for associations between pollutant exposures and lung function parameters and tested for interaction terms between exposures and genetic ancestry. Measurements and Main Results: A 5 mg/m3 increase in average lifetime particulate matter less than or equal to 2.5 mm in diameter exposure was associated with a 7.7% decrease in FEV1 (95% confidence interval =211.8 to 23.5%) in the overall study population. Global genetic ancestry did not appear to significantly modify these associations, but percent African ancestry was a significant predictor of lung function. Conclusions: Early-life particulate exposures were associated with reduced lung function in Latino and African American children with asthma. This is the first study to report an association between exposure to particulates and reduced lung function in minority children in which racial/ethnic status was measured by ancestry-informative markers.

Original languageEnglish (US)
Pages (from-to)1271-1280
Number of pages10
JournalAmerican journal of respiratory and critical care medicine
Volume193
Issue number11
DOIs
StatePublished - Jun 1 2016

Keywords

  • Air Pollution
  • Ancestry
  • Children
  • Lung Function
  • Minority

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine

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    Neophytou, A. M., White, M. J., Oh, S. S., Thakur, N., Galanter, J. M., Nishimura, K. K., Pino-Yanes, M., Torgerson, D. G., Gignoux, C. R., Eng, C., Nguyen, E. A., Hu, D., Mak, A. C., Kumar, R., Seibold, M. A., Davis, A., Farber, H. J., Meade, K., Avila, P. C., ... Burchard, E. G. (2016). Air pollution and lung function in minority youth with asthma in the GALA II (Genesenvironments and admixture in Latino Americans) and SAGE II (study of African Americans, asthma, genes, and environments) studies. American journal of respiratory and critical care medicine, 193(11), 1271-1280. https://doi.org/10.1164/rccm.201508-1706OC