Maternal exposure to air pollution during pregnancy and child's cognitive, language, and motor function: ECLIPSES study
2022
Iglesias-Vázquez, Lucía | Binter, Anne-Claire | Canals, Josefa | Hernández-Martínez, Carmen | Voltas, Núria | Ambròs, Albert | Fernández-Barrés, Silvia | Pérez-Crespo, Laura | Guxens, Mònica | Arija, Victoria
Prenatal exposure to air pollution, even at low levels, has been associated with negative effects on a child's neuropsychological functioning. The present work aimed to investigate the associations between prenatal exposure to air pollution on a child's cognitive, language, and motor function at 40 days of age in a highly exposed area of Spain. From the ECLIPSES study population, the present work counted 473 mother-child pairs. Traffic-related air pollution levels at home addresses during the whole pregnancy were estimated including particulate matter (PM) with an aerodynamic diameter <2.5 μm (PM₂.₅), <10 μm (PM₁₀) and 2.5–10 μm (PMcₒₐᵣₛₑ), PM₂.₅absorbance, nitrogen dioxide (NO₂), other nitrogen oxides (NOₓ), and ozone (O₃) using land-use regression models developed within ESCAPE and ELAPSE projects. Children's cognitive, language, and motor functions were assessed using the Bayley Scales of Infant Development 3rd edition (BSID-III) at around 40 days of age. Linear regression models were adjusted for maternal biological, sociodemographic and lifestyle characteristics, area deprivation index, and amount of greenness around the home's address. All air pollutants assessed, except PM₂.₅ absorbance, were associated with lower motor function in children, while no association was observed between prenatal exposure to air pollution and cognitive and language functions. This finding highlights the need to continue raising awareness of the population-level impact that maternal exposure to air pollution even at low levels can have on the neuropsychological functions of children.
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