Evidence map›Paper›PMID 32641055›Full record

ArticleEnvironmental health : a global access science source2020

Pregnancy-induced changes in serum concentrations of perfluoroalkyl substances and the influence of kidney function.

Christel Nielsen, Ulrika Andersson Hall, Christian Lindh, Ulf Ekström, Yiyi Xu, Ying Li, Agneta Holmäng, Kristina Jakobsson

Open access · goldAbstract read
In one paragraph

Article in Environmental health : a global access science source, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 13% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 38 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Is drinking water with low PFAS a significant source of human exposure? Evidence summary.Journal of exposure science & environmental epidemiology · 2026
    Review
  4. Review
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  11. Review
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  13. Article
  14. Biomonitoring of inorganic arsenic species in pregnancy.Journal of exposure science & environmental epidemiology · 2023
    Review
  15. Article
  16. Article
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  18. Article
  19. Article
  20. Review
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

8 authors at 3 institutions in 1 country.

Christel NielsenDepartment of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Medicon Village (402A), Scheelevägen 8, 223 81, Lund, Sweden. christel.nielsen@med.lu.se.ORCID 0000-0003-3940-7847
Ulrika Andersson HallDepartment of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.
Christian LindhDepartment of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Medicon Village (402A), Scheelevägen 8, 223 81, Lund, Sweden.
Ulf EkströmDepartment of Laboratory Medicine, Division of Clinical Chemistry and Pharmacology, Lund University, Lund, Sweden.
Yiyi XuSchool of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.
Ying LiSchool of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.
Agneta HolmängDepartment of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.
Kristina JakobssonSchool of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden.
University of Gothenburg · SELund University · SESahlgrenska University Hospital · SE

Funding

Diabetesförbundet 2015-08Svenska Forskningsrådet Formas 2017-00896Swedish state under the agreement between the government and the country councils (the ALF-agreement) 720851Vetenskapsrådet 12206
6 · The paper itself

Abstract

backgroundEpidemiological associations between maternal concentrations of perfluoroalkyl substances (PFAS) and birth weight are inconsistent. There is concern that studies based on samples collected in late pregnancy may be confounded by kidney function but studies of the relation between pregnancy-induced changes in PFAS and kidney function are lacking. Our aims were to investigate changes in serum concentrations of perfluorononanoic acid (PFNA), perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS) and perfluorohexane sulfonate (PFHxS) from early to late pregnancy and to explore relations to changes in glomerular filtration rate (GFR) and glomerular pore size.

methodsWe conducted the study in a cohort of 73 pregnancies of normal-weight Swedish women without gestational diabetes and preeclampsia, enrolled 2009-2014. Blood was collected in median weeks 11 and 36, respectively, and analysed PFAS using liquid chromatography-tandem-mass-spectrometry. We estimated GFR based on creatinine and cystatin C and used the ratio eGFR

resultsMedian concentrations of PFNA, PFOA and PFOS decreased by 15-21% but changes were uncorrelated to changes in kidney function (partial R = - 0.06-0.11). The observed increase in median PFHxS concentration of 69% was likely an artefact of systematic measurement error caused by coeluting endogenous inferences.

conclusionsSerum concentrations of PFNA, PFOA and PFOS decrease during pregnancy but the magnitudes of change are unrelated to parallel changes in eGFR and glomerular pore size, suggesting that changes in these indicators of kidney function are not important confounders in studies of PFAS and birth weight in pregnancies without gestational diabetes and preeclampsia.

Indexed as

Glomerular Filtration RateAdultEnvironmental PollutantsFemaleFluorocarbonsHumansKidneyKidney Function TestsPregnancySwedenTime FactorsYoung AdultEnvironmental PollutantsFluorocarbonsGlomerular filtration rate, glomerular pore sizePerfluoroalkyl substancesPregnancy

Identifiers

PMID32641055
PMCPMC7346349
OpenAlexW3040853083

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.