当前位置： SCI文献检索 > ENVIRONMENT INTERNATIONAL期刊下所有文献 > Air pollution and birth outcomes: a systematic review.

Air pollution and birth outcomes: a systematic review.

Abstract：

BACKGROUND:Several mechanisms are suspected to underlie adverse birth outcomes among mothers exposed to air pollutants, including inflammation, direct toxic effects on fetuses and the placenta, displacement of the oxygen-hemoglobin dissociation curve, and formation of DNA adducts. OBJECTIVE:To systematically review the association between air pollutants and birth outcomes of low birth weight (LBW), preterm (PTB) and small for gestational age (SGA) births. METHODS:Electronic databases and bibliographies of identified articles were searched for English language studies reporting on birth outcomes. Included studies were assessed for risks of bias in the selection, exposure assessment, confounder adjustment, analyses, outcomes assessment, and attrition. Unadjusted and adjusted estimates from included studies were extracted. Methodological differences between the studies were evaluated. RESULTS:A total of 41 studies, mostly with a moderate risk of biases due to indirect assessment methods employed, met the eligibility criteria. Exposure to sulphur dioxide was associated with PTB, exposure to fine particulate matter (PM) of ≤2.5 μM was associated with LBW, PTB and SGA births, and exposure to coarse PM of ≤10 μM was associated with SGA births. The evidence for nitrous oxide, nitrogen dioxide, ozone and carbon monoxide was inconclusive. CONCLUSIONS:Reported associations, and lack thereof, between individual air pollutants and birth outcomes have differed across published studies. This heterogeneity and/or absence of association may be due to difficulty in quantifying exposure, method of ascertainment, time of measurement and collinearity between pollutants. Important future research directions include developing improved methods to detect the duration and intensity of exposure, including entire populations, as well as performing well-designed nested studies that ascertain complete outcomes, avoiding residual confounding, and adjusting for residential mobility.

journal_name

Environ Int

journal_title

Environment international

authors

Shah PS,Balkhair T,Knowledge Synthesis Group on Determinants of Preterm\/LBW births.

doi

10.1016/j.envint.2010.10.009

subject

Has Abstract

pub_date

2011-02-01 00:00:00

pages

498-516

issue

eissn

0160-4120

issn

1873-6750

pii

S0160-4120(10)00225-4

journal_volume

pub_type

杂志文章,评审

在线工具

Air pollution and birth outcomes: a systematic review.