CC16 Levels into Adult Life Are Associated with Nitrogen Dioxide Exposure at Birth.

American Journal of Respiratory and Critical Care Medicine
Paloma I BeamerFernando D Martinez

Abstract

Rationale: Lung function and growth are adversely associated with nitrogen dioxide (NO2) exposure. Lower levels of circulating club cell secretory protein (CC16) in childhood are also associated with subsequent decreased lung function. NO2 exposure may induce epithelial damage in lungs and alter club cell proliferation and morphology.Objectives: To determine if increased ambient NO2 levels at participants' home addresses in early life were associated with decreased levels of CC16 from age 6 to 32 years.Methods: Participants were enrolled at birth in the Tucson Children's Respiratory Study and had circulating CC16 measured at least once between age 6 and 32. Linear mixed models were used to determine the association between estimated ambient NO2 exposure at participants' home address at birth or age 6 with CC16 levels from age 6 to 32.Measurements and Main Results: NO2 exposures at birth or age 6 were available for 777 children with one or more CC16 measurement. We found a negative association between NO2 exposure and CC16 levels, with a 4.7% (95% confidence interval, -8.6 to -0.7) decrease in CC16 levels from age 6 to 32 per interquartile range increase in NO2 exposure (6.0 ppb) at the participants' birth address. We observed m...Continue Reading

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Citations

Mar 28, 2019·American Journal of Respiratory and Critical Care Medicine·Ingrid A Laing
Mar 3, 2021·Environmental Science and Pollution Research International·Christian B Vega-MillánMaria M Meza-Montenegro

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R Foundation for Statistical Computing
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