Evidence map›Paper›PMID 27114094›Full record

ArticleEnvironmental health : a global access science source2016

Maternal body burdens of PCDD/Fs and PBDEs are associated with maternal serum levels of thyroid hormones in early pregnancy: a cross-sectional study.

Sanna Lignell, Marie Aune, Per Ola Darnerud, Mats Stridsberg, Annika Hanberg, Susanna C Larsson, Anders Glynn

Open access · goldAbstract read
In one paragraph

Article in Environmental health : a global access science source, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
10.5field-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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. Pooled it
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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

7 authors at 3 institutions in 1 country.

Sanna LignellRisk Benefit Assessment Department, National Food Agency, Box 622, SE-751 26, Uppsala, Sweden. sanna.lignell@slv.se.
Marie AuneChemistry Department, National Food Agency, Box 622, SE-751 26, Uppsala, Sweden.
Per Ola DarnerudRisk Benefit Assessment Department, National Food Agency, Box 622, SE-751 26, Uppsala, Sweden.
Mats StridsbergDepartment of Medical Sciences, Uppsala University, SE-751 85, Uppsala, Sweden.
Annika HanbergInstitute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77, Stockholm, Sweden.
Susanna C LarssonInstitute of Environmental Medicine, Karolinska Institutet, Box 210, SE-171 77, Stockholm, Sweden.
Anders GlynnRisk Benefit Assessment Department, National Food Agency, Box 622, SE-751 26, Uppsala, Sweden.
National Food Administration · SEKarolinska Institutet · SEUppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThyroid hormones (THs) regulate many biological functions in the human body and are essential for normal brain development. Epidemiological studies have observed diverging associations between halogenated persistent organic pollutant (POP) exposure and concentrations of THs in pregnant women and their infants. We investigated whether background exposure to polybrominated diphenyl ethers (PBDEs) is related to TH status in a Swedish population of pregnant women and their infants. Furthermore, we examined associations between polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) and TH status in early pregnancy as an extension of an earlier study focusing on late pregnancy TH status.

methodsFree thyroxine (T4), total triiodo-thyronine (T3) and thyroid stimulating hormone (TSH) were analysed in serum from first-time mothers (N = 220-281) in the first and third trimester, and in infants (N = 115-150) 3 weeks and 3 months after delivery. Antibodies to thyroid peroxidase (anti-TPO) (N = 260) were measured in maternal third trimester serum. Maternal body burdens of PCBs (N = 281) were estimated from serum lipid PCB concentrations in late pregnancy, and PCDD/F (N = 97) and PBDE (N = 186) body burdens were estimated from concentrations in mother's milk lipids 3 weeks after delivery. Linear regression models allowed for covariate adjustment of the associations between ln-transformed POP body burdens and concentrations of TH and anti-TPO.

resultsMaternal body burden of BDE-153 was inversely associated with first trimester total T3, otherwise no associations between PBDEs and first and second trimester THs were observed. No associations were found between maternal PBDE body burdens and infant THs. Maternal body burden of PCDD/Fs were inversely associated with first trimester total T3. No associations were observed between PCBs and first trimester THs. Third trimester anti-TPO was not associated with maternal PCBs, PCDD/Fs and PBDEs.

conclusionsOur results suggest that maternal PCDD/F and BDE-153 body burdens influence maternal TH status in early pregnancy, which is a critical period when maternal TH status influences fetal development.

Indexed as

AdolescentAdultBenzofuransBody BurdenCross-Sectional StudiesDibenzofurans, PolychlorinatedEnvironmental MonitoringEnvironmental PollutantsFemaleHalogenated Diphenyl EthersHumansInfantInfant, NewbornMaleMaternal ExposureMilk, HumanBenzofuransDibenzofurans, PolychlorinatedEnvironmental PollutantsHalogenated Diphenyl EthersPolychlorinated BiphenylsPolychlorinated DibenzodioxinsThyroid HormonesDioxinsPBDEsPCBsT3T4Thyroid hormoneTSH

Identifiers

PMID27114094
PMCPMC4845384
OpenAlexW2343387560

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.