Association of ambient air pollutants and birth weight in Ningbo, 2015–2017

Li, Zhen; Yuan, Xiaoqi; Fu, Jianfei; Zhang, Lingyun; Hong, Lixia; Hu, Lingjie; Liu, Liya

doi:10.1016/j.envpol.2019.03.076

Cited by 33 publications

(14 citation statements)

References 42 publications

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“…A retrospective cohort study based on a large sample suggested that PM 2.5 exposure during pregnancy might increase the risk of term low birth weight (TLBW), but not in other air pollutants, and it also suggested that 3% of LBW cases can be directly attributed to residential PM 2.5 exposure higher than 13.8 μg/m 3 during pregnancy (Smith et al 2017 ). And this conclusion was consistent with other similar studies (Janssen et al 2017 ; Li et al 2019 ). But He et al found that with the increase of SO 2 during pregnancy, birth weight was significantly decreased, while birth weights were significantly increased with NO 2 exposure (He et al 2018 ).…”

Section: Introductionsupporting

confidence: 93%

Impact of air pollution exposure during various periods of pregnancy on term birth weight: a large-sample, retrospective population-based cohort study

Shang

Huang

Yang

et al. 2020

Environ Sci Pollut Res

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Previous studies have suggested that maternal exposure to air pollution might affect term birth weight. However, the conclusions are controversial. Birth data of all term newborns born in Xi’an city of Shaanxi, China, from 2015 to 2018 and whose mother lived in Xi’an during pregnancy were selected form the Birth Registry Database. And the daily air quality data of Xi’an city was collected from Chinese Air Quality Online Monitoring and Analysis Platform. Generalized additive models (GAM) and 2-level binary logistic regression models were used to estimate the effects of air pollution exposure on term birth weight, the risk term low birth weight (TLBW), and macrosomia. Finally, 321521 term newborns were selected, including 4369(1.36%) TLBW infants and 24,960 (7.76%) macrosomia. The average pollution levels of PM2.5, PM10, and NO2 in Xi’an city from 2015 to 2018 were higher than national limits. During the whole pregnancy, maternal exposure to PM2.5, PM10, SO2, and CO all significantly reduced the term birth weight and increased the risk of TLBW. However, NO2 and O3 exposure have significantly increased the term birth weight, and O3 even increased the risk of macrosomia significantly. Those effects were also observed in the first and second trimesters of pregnancy. But during the third trimester, high level of air quality index (AQI) and maternal exposure to PM2.5, PM10, SO2, NO2, and CO increased the term birth weight and the risk of macrosomia, while O3 exposure was contrary to this effect. The findings suggested that prenatal exposure to air pollution might cause adverse impacts on term birth weight, and the effects varied with trimesters and pollutants, which provides further pieces of evidence for the adverse effects of air pollution exposure in heavy polluted-area on term birth weight.

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Section: Introductionsupporting

confidence: 93%

Impact of air pollution exposure during various periods of pregnancy on term birth weight: a large-sample, retrospective population-based cohort study

Shang

Huang

Yang

et al. 2020

Environ Sci Pollut Res

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“…In one study by Kumar et al [25], birth weight showed a stronger inverse association with PM 2.5 exposure during the first trimester than during the second and third trimesters. Another study by Li et al [26] had similar findings. A recent article by Blum et al [27] exposing pregnant mice to PM 2.5 found lower birth weight after exposure in both early and late gestational periods.…”

Section: Discussionsupporting

confidence: 55%

Association between maternal exposure to particulate matter (PM2.5) and adverse pregnancy outcomes in Lima, Peru

Tapia

Vasquez

et al. 2020

J Expo Sci Environ Epidemiol

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The literature shows associations between maternal exposures to PM 2.5 and adverse pregnancy outcomes. There are few data from Latin America. We have examined PM 2.5 and pregnancy outcomes in Lima. The study included 123,034 births from 2012 to 2016, at three public hospitals. We used estimated daily PM 2.5 from a newly created model developed using ground measurements, satellite data, and a chemical transport model. Exposure was assigned based on district of residence (n = 39). Linear and logistic regression analyzes were used to estimate the associations between air pollution exposure and pregnancy outcomes. Increased exposure to PM 2.5 during the entire pregnancy and in the first trimester was inversely associated with birth weight. We found a decrease of 8.13 g (−14.0; −1.84) overall and 18.6 g (−24.4, −12.8) in the first trimester, for an interquartile range (IQR) increase (9.2 µg/m 3) in PM 2.5. PM 2.5 exposure was positively associated with low birth weight at term (TLBW) during entire pregnancy (

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“…However, in other studies, it has been shown that exposure to O 3 has been associated with a reduction in birth weight. 43,58,59 Some studies have examined the effects of PM 2.5 on preterm labor and low birth weight in sensitive exposure window. [70][71][72] Moreover, the results of this study showed that there is no significant relationship between exposure to PM 2.5 and low birth weight.…”

Section: Low Birth Weightmentioning

confidence: 99%

“…37 Another complication of exposure to air pollution is the increased risk of birth of a baby weighing less than 2500 grams. 27 As several studies have shown, the increase in air pollutants is associated with decreased average birth weight, 38,39 low birth weight [40][41][42][43][44][45] and small for gestational age (SGA) newborns. 46,47 In 2011, according to the annual average of PM 10 (372 micrograms per cubic meter), the World Health Organization declared Ahvaz as the most polluted city in Iran and the world.…”

Section: Introductionmentioning

confidence: 99%

<p>The Association Between Air Pollution and Low Birth Weight and Preterm Labor in Ahvaz, Iran</p>

Sarizadeh

Dastoorpoor

Simbar

2020

IJWH

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Pregnant women and fetuses are sensitive to air pollution due to physiological changes in pregnancy. The aim of this study was to determine the relationship between exposure to air pollution, low birth weight and preterm labor in Ahvaz. Methods: This research was a time-series study. The research sample consisted of all data about low birth weight and preterm labor pregnant women from Imam Khomeini Hospital and Razi Hospital in Ahvaz city. Air pollutant data including O 3 , NO, NO 2 , SO 2 , CO, PM 10 and PM 2.5 and climate data were collected from the Environmental Protection Agency and the Khuzestan Province during a 10-year period from 2008 to 2018. The generalized additive models (GAMs) with different air pollutant lags up to 6 days were used. Results: The results of multiple GAM model have shown that there is a direct and significant relationship between exposure to PM 10 at 0-6-day lag, SO 2 at 2-and 3-day lag and low birth weight. In addition, there was a direct and significant correlation between exposure to NO 2 , NO, CO and PM 2.5 at 0-6-day lag and preterm labor. Conclusion: The results indicate the effect of air pollutants on low birth weight and preterm labor. Therefore, pregnant women should be informed about the negative consequences of air pollution and avoid exposure to polluted air during pregnancy.

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Association of ambient air pollutants and birth weight in Ningbo, 2015–2017

Cited by 33 publications

References 42 publications

Impact of air pollution exposure during various periods of pregnancy on term birth weight: a large-sample, retrospective population-based cohort study

Impact of air pollution exposure during various periods of pregnancy on term birth weight: a large-sample, retrospective population-based cohort study

Association between maternal exposure to particulate matter (PM2.5) and adverse pregnancy outcomes in Lima, Peru

<p>The Association Between Air Pollution and Low Birth Weight and Preterm Labor in Ahvaz, Iran</p>

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