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Association of Maternal Air Pollution Exposure and Infant Lung Function Is Modified by Genetic Propensity to Oxidative Stress.

journal contribution
posted on 2024-09-22, 23:53 authored by Dwan Vilcins, Wen Ray Lee, Cindy PhamCindy Pham, Sam Tanner, Luke D Knibbs, David BurgnerDavid Burgner, Tamara L Blake, Toby MansellToby Mansell, Anne-Louise PonsonbyAnne-Louise Ponsonby, Peter SlyPeter Sly, Barwon Infant Study Investigator Group
BACKGROUND AND OBJECTIVE: The association between air pollution and poor respiratory health outcomes is well established. Children are particularly at risk from air pollution, especially during the prenatal period as their organs and systems are still undergoing crucial development. This study investigated maternal exposure to air pollution during pregnancy and oxidative stress (OS), inflammation, and infant lung function at 4 weeks of age. METHODS: Data from the Barwon Infant Study were available for 314 infants. The exposure to NO2 and PM2.5 were estimated. Infant lung function (4 weeks) was measured by multiple-breath washout. Glycoprotein acetyls (GlycA) (36 weeks prenatal), cord blood, and OS biomarkers were measured in maternal urine (28 weeks). A genetic pathway score for OS (gPFSox) was calculated. Linear regression was used and potential modification by the OS genotype was tested. RESULTS: There was no relationship between maternal exposure to air pollution and infant lung function, or with GlycA or OS during pregnancy. We found an association in children with a genetic propensity to OS between NO2 and a lower functional residual capacity (FRC) (β = -5.3 mls, 95% CI (-9.3, -1.3), p = 0.01) and lung clearance index (LCI) score (β = 0.46 turnovers, (95% CI 0.10, 0.82), p = 0.01). CONCLUSION: High prenatal exposure to ambient NO2 is associated with a lower FRC and a higher LCI score in infants with a genetic propensity to oxidative stress. There was no relationship between maternal exposure to air pollution with maternal and cord blood inflammation or OS biomarkers.

Funding

Determinants and cardiometabolic consequences of early life inflammation : National Health and Medical Research Council | 1175744

History

Pagination

937-

Volume

11

Publisher

MDPI

Issue

8

Journal

Children (Basel)

Language

eng

Location

Switzerland

Medium

Electronic

PII

children11080937

Publisher licence

CC BY

Online publication date

2024-07-31

Publication date

2024-07-31

Associated identifiers

grant.9143738 (dimensions-grant-id)

Publication status

  • Published online