Evidence map›Paper›PMID 33574373›Full record

ArticleScientific reports2021

Exposure to perfluoroalkyl substances in early pregnancy and risk of sporadic first trimester miscarriage.

Sverre Wikström, Ghada Hussein, Annika Lingroth Karlsson, Christian H Lindh, Carl-Gustaf Bornehag

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 2 pooled it
2.5field-weighted citation impact, top 12% 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

18 citing papers in PubMed, 2 syntheses or guidelines pooled it, 32 citations in OpenAlex.

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  14. Perfluorooctanoic acid induces transcriptomic alterations in second trimester human cytotrophoblasts.Toxicological sciences : an official journal of the Society of Toxicology · 2023
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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

5 authors at 4 institutions in 2 countries.

Sverre WikströmSchool of Medical Sciences, Örebro University, Södra Grev Rosengatan 30, 703 62, Örebro, Sweden. sverre.wikstrom@regionvarmland.se.
Ghada HusseinDepartment of Obstetrics and Gynecology CLINTEC, Karolinska institute, Stockholm, Sweden.
Annika Lingroth KarlssonSchool of Medical Sciences, Örebro University, Södra Grev Rosengatan 30, 703 62, Örebro, Sweden.
Christian H LindhDivision of Occupational and Environmental Medicine, Lund University, Lund, Sweden.
Carl-Gustaf BornehagDepartment of Health Sciences, Karlstad University, Karlstad, Sweden.
Örebro University · SEIcahn School of Medicine at Mount Sinai · USLund University · SEStockholm IVF · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many first trimester sporadic miscarriages are unexplained and the role of environmental exposures is unknown. The present aim was to study if levels of Perfluoroalkyl substances (PFASs) in early pregnancy are associated with unexplained, sporadic first trimester miscarriage. The study was performed within the Swedish SELMA pregnancy cohort. Seventy-eight women with non-recurrent first trimester miscarriage were included and 1449 women were available as live birth controls. Eight PFASs were measured in first trimester serum. A doubling of perfluorooctanoic acid (PFOA) exposure, corresponding to an inter-quartile increase, was associated with an odds ratio (95%CI) for miscarriage of 1.48 (1.09-2.01) when adjusting for parity, age and smoking. Analyses per quartiles of PFOA exposure indicated a monotonic dose response association with miscarriage. A similar, but not significant, pattern was observed for perfluorononanoic acid (PFNA). For other PFAS, there were no associations with miscarriage. We have previously shown associations between early pregnancy PFAS exposures and preeclampsia, as well as lower birth weight. Now we report an association between PFOA and miscarriage within the same cohort, which may suggest shared but unknown mechanisms. The study can only represent a period of early placentation and clinical pregnancy loss during the second half of the first trimester.

Indexed as

Abortion, SpontaneousAdultAlkanesulfonic AcidsCaprylatesEnvironmental PollutantsFemaleFluorocarbonsHumansInfant, NewbornMaternal ExposurePre-EclampsiaPregnancyPregnancy Trimester, FirstPrenatal Exposure Delayed EffectsRisk FactorsSwedenAlkanesulfonic AcidsCaprylatesEnvironmental PollutantsFluorocarbonsperfluorooctanoic acid

Identifiers

PMID33574373
PMCPMC7878909
OpenAlexW3128402354

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.