Evidence map›Paper›PMID 22626541›Full record

ArticleEnvironmental health perspectives2012

Placental mitochondrial DNA content and particulate air pollution during in utero life.

Bram G Janssen, Elke Munters, Nicky Pieters, Karen Smeets, Bianca Cox, Ann Cuypers, Frans Fierens, Joris Penders, Jaco Vangronsveld, Wilfried Gyselaers 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 121 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
121citing papers in PubMed, 2 pooled it
7.8field-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

121 citing papers in PubMed, 2 syntheses or guidelines pooled it, 243 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. B vitamins attenuate the epigenetic effects of ambient fine particles in a pilot human intervention trial.Proceedings of the National Academy of Sciences of the United States of America · 2017
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  17. Ambient air pollution and adverse birth outcomes: A review of underlying mechanisms.BJOG : an international journal of obstetrics and gynaecology · 2024
    Review
  18. Article
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  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 3 institutions in 1 country.

Bram G JanssenCentre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium.
Elke Munters
Nicky Pieters
Karen Smeets
Bianca Cox
Ann Cuypers
Frans Fierens
Joris Penders
Jaco Vangronsveld
Wilfried Gyselaers
Tim S Nawrot
Hasselt University · BEBelgian Development Agency · BEZiekenhuis Oost-Limburg · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStudies emphasize the importance of particulate matter (PM) in the formation of reactive oxygen species and inflammation. We hypothesized that these processes can influence mitochondrial function of the placenta and fetus.

objectiveWe investigated the influence of PM₁₀ exposure during pregnancy on the mitochondrial DNA content (mtDNA content) of the placenta and umbilical cord blood.

methodsDNA was extracted from placental tissue (n = 174) and umbilical cord leukocytes (n = 176). Relative mtDNA copy numbers (i.e., mtDNA content) were determined by real-time polymerase chain reaction. Multiple regression models were used to link mtDNA content and in utero exposure to PM₁₀ over various time windows during pregnancy.

resultsIn multivariate-adjusted analysis, a 10-µg/m³ increase in PM₁₀ exposure during the last month of pregnancy was associated with a 16.1% decrease [95% confidence interval (CI): -25.2, -6.0%, p = 0.003] in placental mtDNA content. The corresponding effect size for average PM₁₀ exposure during the third trimester was 17.4% (95% CI: -31.8, -0.1%, p = 0.05). Furthermore, we found that each doubling in residential distance to major roads was associated with an increase in placental mtDNA content of 4.0% (95% CI: 0.4, 7.8%, p = 0.03). No association was found between cord blood mtDNA content and PM₁₀ exposure.

conclusionsPrenatal PM₁₀ exposure was associated with placental mitochondrial alterations, which may both reflect and intensify oxidative stress production. The potential health consequences of decreased placental mtDNA content in early life must be further elucidated.

Indexed as

Environmental ExposureAdolescentAdultAir PollutantsCohort StudiesDNA, MitochondrialFemaleFetal BloodHumansInfant, NewbornMaleMultivariate AnalysisNetherlandsOxidative StressParticulate MatterPlacentaAir PollutantsDNA, MitochondrialParticulate MatterVehicle Emissions

Identifiers

PMID22626541
PMCPMC3440109
OpenAlexW2047906382

What OpenQuestion holds

Textmetadata
LicenceCC0
Read underepoch 390

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.