Evidence map›Paper›PMID 23924579›Full record

ArticleAmerican journal of epidemiology2013

Maternal and cord-blood thyroid hormone levels and exposure to polybrominated diphenyl ethers and polychlorinated biphenyls during early pregnancy.

Nadia Abdelouahab, Marie-France Langlois, Laetiscia Lavoie, François Corbin, Jean-Charles Pasquier, Larissa Takser

Abstract read
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In one paragraph

Article in American journal of epidemiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed, 2 pooled it
10.1field-weighted citation impact, top 1% 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

60 citing papers in PubMed, 2 syntheses or guidelines pooled it, 141 citations in OpenAlex.

  1. Pooled it
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  16. Ambient air pollution and endocrinologic disorders in childhood.Annals of pediatric endocrinology & metabolism · 2021
    Article
  17. Article
  18. Article
  19. Article
  20. New Insights into Mechanisms of Endocrine-Disrupting Chemicals in Thyroid Diseases: The Epigenetic Way.International journal of environmental research and public health · 2020
    Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Nadia AbdelouahabDepartment of Pediatrics, Faculty of Medicine, University of Sherbrooke, 3001 12th Avenue Nord, Sherbrooke, Quebec, Canada.
Marie-France Langlois
Laetiscia Lavoie
François Corbin
Jean-Charles Pasquier
Larissa Takser
Université de Sherbrooke · CA

Funding

Canadian Institutes of Health Research MOP-84551
6 · The paper itself

Abstract

Thyroid hormones play a critical role in the growth of many organs, especially the brain. Polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) interact with the thyroid pathway and may disturb neurodevelopment. This prospective study was designed to examine associations between maternal blood PBDEs and PCBs in early pregnancy and levels of thyroid hormones in maternal and umbilical-cord blood. Levels of low-brominated PBDEs, 3 PCB congeners, total and free thyroid hormones (triiodothyronine (T3) and thyroxine (T4)), thyroid-stimulating hormone, thyroid peroxidase antibodies, iodine, selenium, and mercury were measured in 380 pregnant women in the first trimester who were recruited at the University Hospital Center of Sherbrooke (Quebec, Canada) between September 2007 and December 2008. Thyroid hormone levels were also assessed at delivery and in cord blood (n = 260). Data were analyzed on both a volume basis and a lipid basis. At less than 20 weeks of pregnancy, no relationship was statistically significant in volume-based analysis. In lipid-based models, an inverse association between maternal PBDEs and total T3 and total T4 and a direct association with free T3 and free T4 were observed. At delivery, in both analyses, we observed negative associations between maternal total T4, free T3, cord-blood free T4, and PBDEs and between maternal free T3 and PCBs. Our results suggest that exposure to PBDEs and PCBs in pregnancy may interfere with thyroid hormone levels.

Indexed as

Maternal ExposureAdolescentAdultConfounding Factors, EpidemiologicEnvironmental PollutantsFemaleFetal BloodHalogenated Diphenyl EthersHealth BehaviorHumansLipidsPolychlorinated BiphenylsPregnancyPregnancy Trimester, FirstProspective StudiesQuebecEnvironmental PollutantsHalogenated Diphenyl EthersLipidsPolychlorinated BiphenylsThyroid HormonesThyrotropinThyroxineTriiodothyroninecord bloodpolybrominated diphenyl etherspolychlorinated biphenylspregnancythyroid functionumbilical cord

Identifiers

PMID23924579
OpenAlexW2133254212

What OpenQuestion holds

Textmetadata
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.