Maternal PM 10 Exposure Increases Risk for Spina Bifida: A Population-Based Case-Control Study

Frontiers in Public Health

article

Huan Li¹  Yan-Hong Huang²  Jing Li³  Shu Liu⁴  Yan-Ling Chen⁵  Li-Li Li⁶  Cheng-Zhi Jiang⁷  Zong-Jiao Chen⁴  Na Li¹ 

[1] Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University;Department of Ophthalmology, Shenyang Women's and Children's Hospital;Department of Science and Education, Shenyang Maternity and Child Health Hospital;Department of Atmospheric Environment Monitoring, Liaoning Eco-Environmental Monitoring Center;Liaoning Women and Children's Health Hospital;Department of Children's Health Prevention, Shenyang Maternity and Child Health Hospital;School of Environmental and Chemical Engineering, Shenyang Ligong University

关键词: PM 10;    spina bifida;    birth defects;    air pollution;    particulate matter;    case-control study;   

DOI  :  10.3389/fpubh.2021.695192

学科分类：社会科学、人文和艺术（综合）

来源: Frontiers

【 摘 要 】

Limited studies have focused on the impact of ambient air pollution on spina bifida. A population-based case-control study was conducted in Liaoning Province, China to assess the associations between maternal PM 10 exposures in various exposure windows and spina bifida risk. Data on spina bifida cases born between 2010 and 2015 were available from the Maternal and Child Health Certificate Registry of Liaoning Province. Controls were a random sample of healthy livebirths without any birth defects delivered in the selected five cities during 2010–2015. Ambient air monitoring data for PM 10 were obtained from 75 monitoring stations in Liaoning Province. The multivariable logistic regression models were established to calculate adjusted odds ratios (OR) and 95% confidence intervals (CI). We further performed sensitivity analyses by using three propensity score methods. A total of 749 spina bifida cases and 7,950 controls were included. After adjusting for potential confounders, spina bifida was associated with a 10 μg/m 3 increment in PM 10 during the first trimester of pregnancy (adjusted OR = 1.06, 95% CI: 1.00–1.12) and the 3 months before pregnancy (adjusted OR = 1.12, 95% CI: 1.06–1.19). The adjusted ORs in the final model for the highest vs. the lowest quartile were 1.51 (95% CI: 1.04–2.19) for PM 10 during the first trimester of pregnancy and 2.01 (95% CI: 1.43–2.81) for PM 10 during the 3 months before pregnancy. Positive associations were found between PM 10 exposures during the single month exposure windows and spina bifida. Sensitivity analyses based on two propensity score methods largely reported similar positive associations. Our findings support the evidence that maternal PM 10 exposure increases the risk of spina bifida in offspring. Further, validation with a prospective design and a more accurate exposure assessment is warranted.

【 授权许可】

CC BY