Exposure to Air Pollution during Pregnancy and Childhood, and White Matter Microstructure in Preadolescents.
Environ Health Perspect
; 128(2): 27005, 2020 02.
Article
en En
| MEDLINE
| ID: mdl-32074458
ABSTRACT
BACKGROUND:
Air pollution has been related to brain structural alterations, but a relationship with white matter microstructure is unclear.OBJECTIVES:
We assessed whether pregnancy and childhood exposures to air pollution are related to white matter microstructure in preadolescents.METHODS:
We used data of 2,954 children from the Generation R Study, a population-based birth cohort from Rotterdam, Netherlands (2002-2006). Concentrations of 17 air pollutants including nitrogen oxides (NOX), particulate matter (PM), and components of PM were estimated at participants' homes during pregnancy and childhood using land-use regression models. Diffusion tensor images were obtained at child's 9-12 years of age, and fractional anisotropy (FA) and mean diffusivity (MD) were computed. We performed linear regressions adjusting for socioeconomic and lifestyle characteristics. Single-pollutant analyses were followed by multipollutant analyses using the Deletion/Substitution/Addition (DSA) algorithm.RESULTS:
In the single-pollutant analyses, higher concentrations of several air pollutants during pregnancy or childhood were associated with significantly lower FA or higher MD (p<0.05). In multipollutant models of pregnancy exposures selected by DSA, higher concentration of fine particles was associated with significantly lower FA [-0.71 (95% CI -1.26, -0.16) per 5 µg/m3 fine particles] and higher concentration of elemental silicon with significantly higher MD [0.06 (95% CI 0.01, 0.11) per 100 ng/m3 silicon]. Multipollutant models of childhood exposures selected by DSA indicated significant associations of NOX with FA [-0.14 (95% CI -0.23, -0.04) per 20-µg/m3 NOX increase], and of elemental zinc and the oxidative potential of PM with MD [0.03 (95% CI 0.01, 0.04) per 10-ng/m3 zinc increase and 0.07 (95% CI 0.00, 0.44) per 1-nmol DTT/min/m3 oxidative potential increase]. Mutually adjusted models of significant exposures during pregnancy and childhood indicated significant associations of silicon during pregnancy, and zinc during childhood, with MD.DISCUSSION:
Exposure in pregnancy and childhood to air pollutants from tailpipe and non-tailpipe emissions were associated with lower FA and higher MD in white matter of preadolescents. https//doi.org/10.1289/EHP4709.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Contaminantes Atmosféricos
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Exposición a Riesgos Ambientales
/
Sustancia Blanca
Tipo de estudio:
Prognostic_studies
Límite:
Child
/
Female
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Humans
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Male
País/Región como asunto:
Europa
Idioma:
En
Revista:
Environ Health Perspect
Año:
2020
Tipo del documento:
Article
País de afiliación:
España