Evidence map›Paper›PMID 28266608›Full record

ArticleScientific reports2017

Human amniotic fluid contaminants alter thyroid hormone signalling and early brain development in Xenopus embryos.

Jean-Baptiste Fini, Bilal B Mughal, Sébastien Le Mével, Michelle Leemans, Mélodie Lettmann, Petra Spirhanzlova, Pierre Affaticati, Arnim Jenett, Barbara A Demeneix

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
14.6field-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

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 71 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Review
  5. Overlapping action of TFrontiers in endocrinology · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Thyroid Disrupting Chemicals in Mixture Perturb Thymocyte Differentiation in Xenopus laevis Tadpoles.Toxicological sciences : an official journal of the Society of Toxicology · 2021
    Article
  12. Current research in toxicology · 2021
    Article
  13. Article
  14. Exposure to prenatal PCBs shifts the timing of neurogenesis in the hypothalamus of developing rats.Journal of experimental zoology. Part A, Ecological and integrative physiology · 2020
    Article
  15. Evaluation of Effective and Practical Euthanasia Methods for Larval African Clawed Frogs (Journal of the American Association for Laboratory Animal Science : JAALAS · 2020
    Article
  16. Article
  17. Review
  18. Review
  19. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 1 country.

Jean-Baptiste FiniUMR CNRS 7221, Evolution des Régulations Endocriniennes, Muséum National d'Histoire Naturelle, Sorbonne Université, 75231 Paris, France.
Bilal B MughalUMR CNRS 7221, Evolution des Régulations Endocriniennes, Muséum National d'Histoire Naturelle, Sorbonne Université, 75231 Paris, France.
Sébastien Le MévelUMR CNRS 7221, Evolution des Régulations Endocriniennes, Muséum National d'Histoire Naturelle, Sorbonne Université, 75231 Paris, France.
Michelle LeemansUMR CNRS 7221, Evolution des Régulations Endocriniennes, Muséum National d'Histoire Naturelle, Sorbonne Université, 75231 Paris, France.
Mélodie LettmannUMR CNRS 7221, Evolution des Régulations Endocriniennes, Muséum National d'Histoire Naturelle, Sorbonne Université, 75231 Paris, France.
Petra SpirhanzlovaUMR CNRS 7221, Evolution des Régulations Endocriniennes, Muséum National d'Histoire Naturelle, Sorbonne Université, 75231 Paris, France.
Pierre AffaticatiUMR CNRS TEFOR, Tefor Core Facility Paris-Saclay Institute of Neuroscience UMR 9197, CNRS, Université Paris-Saclay, France.
Arnim JenettUMR CNRS TEFOR, Tefor Core Facility Paris-Saclay Institute of Neuroscience UMR 9197, CNRS, Université Paris-Saclay, France.
Barbara A DemeneixUMR CNRS 7221, Evolution des Régulations Endocriniennes, Muséum National d'Histoire Naturelle, Sorbonne Université, 75231 Paris, France.
Centre National de la Recherche Scientifique · FRSorbonne Université · FREvolution des Régulations Endocriniennes · FRUniversité Paris-Saclay · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Thyroid hormones are essential for normal brain development in vertebrates. In humans, abnormal maternal thyroid hormone levels during early pregnancy are associated with decreased offspring IQ and modified brain structure. As numerous environmental chemicals disrupt thyroid hormone signalling, we questioned whether exposure to ubiquitous chemicals affects thyroid hormone responses during early neurogenesis. We established a mixture of 15 common chemicals at concentrations reported in human amniotic fluid. An in vivo larval reporter (GFP) assay served to determine integrated thyroid hormone transcriptional responses. Dose-dependent effects of short-term (72 h) exposure to single chemicals and the mixture were found. qPCR on dissected brains showed significant changes in thyroid hormone-related genes including receptors, deiodinases and neural differentiation markers. Further, exposure to mixture also modified neural proliferation as well as neuron and oligodendrocyte size. Finally, exposed tadpoles showed behavioural responses with dose-dependent reductions in mobility. In conclusion, exposure to a mixture of ubiquitous chemicals at concentrations found in human amniotic fluid affect thyroid hormone-dependent transcription, gene expression, brain development and behaviour in early embryogenesis. As thyroid hormone signalling is strongly conserved across vertebrates the results suggest that ubiquitous chemical mixtures could be exerting adverse effects on foetal human brain development.

Indexed as

Amniotic FluidAnimalsAnimals, Genetically ModifiedBrainCell DifferentiationEmbryo, NonmammalianEndocrine DisruptorsFemaleGene Expression Regulation, DevelopmentalHumansLarvaNeuronsSignal TransductionThyroid HormonesXenopus laevisEndocrine DisruptorsThyroid Hormones

Identifiers

PMID28266608
PMCPMC5339866
OpenAlexW2593039170

What OpenQuestion holds

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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.