Evidence map›Paper›PMID 22922820›Full record

ArticleEnvironmental health perspectives2012

Air pollution exposure and markers of placental growth and function: the generation R study.

Edith H van den Hooven, Frank H Pierik, Yvonne de Kluizenaar, Albert Hofman, Sjoerd W van Ratingen, Peter Y J Zandveld, Henk Russcher, Jan Lindemans, Henk M E Miedema, Eric A P Steegers and 1 more

Open access · diamondAbstract read
In one paragraph

Article in Environmental health perspectives, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 87 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
87citing papers in PubMed, 7 pooled it
7.2field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

87 citing papers in PubMed, 7 syntheses or guidelines pooled it, 199 citations in OpenAlex.

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27 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 2 institutions in 1 country.

Edith H van den HoovenThe Generation R Study Group, Erasmus Medical Center, Rotterdam, the Netherlands. e.vandenhooven@erasmusmc.nl
Frank H Pierik
Yvonne de Kluizenaar
Albert Hofman
Sjoerd W van Ratingen
Peter Y J Zandveld
Henk Russcher
Jan Lindemans
Henk M E Miedema
Eric A P Steegers
Vincent W V Jaddoe
Netherlands Organisation for Applied Scientific Research · NLErasmus MC · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAir pollution exposure during pregnancy might affect placental growth and function, perhaps leading to pregnancy complications.

objectiveWe prospectively evaluated the associations of maternal air pollution exposure with markers of placental growth and function among 7,801 pregnant women in the Netherlands.

methodsWe estimated levels of particulate matter ≤ 10 µm in aerodynamic diameter (PM10) and nitrogen dioxide (NO2) at the home address for different periods during pregnancy using dispersion modeling techniques. Pro- and anti-angiogenic factors [placental growth factor (PlGF) and soluble fms-like tyrosine kinase 1 (sFlt-1), respectively] were measured in first- and second-trimester maternal blood and in fetal cord blood samples at delivery. Pulsatility index of the uterine and umbilical arteries was measured by Doppler ultrasound in second and third trimester, and notching was assessed in third trimester. Placenta weight and birth weight were obtained from medical records.

resultsHigher PM10 and NO2 exposure levels were associated with lower second-trimester maternal sFlt-1 and PlGF levels. PM10 and NO2 exposures averaged over total pregnancy were associated with higher sFlt-1 and lower PlGF levels in fetal cord blood, consistent with an anti-angiogenic state. PM10 and NO2 exposures were not consistently associated with second- or third-trimester placental resistance indices. NO2 exposure was associated with third-trimester notching (odds ratio 1.33; 95% CI: 0.99, 1.78 per 10-µg/m3 increase in the prior 2 months). PM10 and NO2 exposures were associated with lower placenta weight (-11.8 g; 95% CI: -20.9, -2.7, and -10.7 g; 95% CI: -19.0, -2.4, respectively, per 10-µg/m3 increase in the prior 2 months), but not with placenta to birth weight ratio.

conclusionsOur results suggest that maternal air pollution exposure may influence markers of placental growth and function. Future studies are needed to confirm these findings and explore the maternal and fetal consequences.

Indexed as

Air PollutantsBirth WeightCitiesCohort StudiesFemaleFetal BloodFetal DevelopmentHumansInfant, Low Birth WeightInfant, NewbornMaternal ExposureNetherlandsNitrogen DioxideParticle SizeParticulate MatterPlacenta Growth FactorAir PollutantsNitrogen DioxideParticulate MatterPGF protein, humanPlacenta Growth FactorPregnancy ProteinsVascular Endothelial Growth Factor Receptor-1

Identifiers

PMID22922820
PMCPMC3548279
OpenAlexW2052635085

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.