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Citation
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HERO ID
6320959
Reference Type
Journal Article
Title
Evaluating thyroid hormone disruption: investigations of long-term neurodevelopmental effects in rats after perinatal exposure to perfluorohexane sulfonate (PFHxS)
Author(s)
Ramhøj, L; Hass, U; Gilbert, ME; Wood, C; Svingen, T; Usai, D; Vinggaard, AM; Mandrup, K; Axelstad, M
Year
2020
Is Peer Reviewed?
1
Journal
Scientific Reports
EISSN:
2045-2322
Publisher
NATURE PUBLISHING GROUP
Location
LONDON
Volume
10
Issue
1
Page Numbers
2672
Language
English
PMID
32060323
DOI
10.1038/s41598-020-59354-z
Web of Science Id
WOS:000562932300032
URL
http://www.nature.com/articles/s41598-020-59354-z
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Abstract
Thyroid hormones are critical for mammalian brain development. Thus, chemicals that can affect thyroid hormone signaling during pregnancy are of great concern. Perfluorohexane sulfonate (PFHxS) is a widespread environmental contaminant found in human serum, breastmilk, and other tissues, capable of lowering serum thyroxine (T4) in rats. Here, we investigated its effects on the thyroid system and neurodevelopment following maternal exposure from early gestation through lactation (0.05, 5 or 25 mg/kg/day PFHxS), alone or in combination with a mixture of 12 environmentally relevant endocrine disrupting compounds (EDmix). PFHxS lowered thyroid hormone levels in both dams and offspring in a dose-dependent manner, but did not change TSH levels, weight, histology, or expression of marker genes of the thyroid gland. No evidence of thyroid hormone-mediated neurobehavioral disruption in offspring was observed. Since human brain development appear very sensitive to low T4 levels, we maintain that PFHxS is of potential concern to human health. It is our view that current rodent models are not sufficiently sensitive to detect adverse neurodevelopmental effects of maternal and perinatal hypothyroxinemia and that we need to develop more sensitive brain-based markers or measurable metrics of thyroid hormone-dependent perturbations in brain development.
Keywords
Index Medicus
Tags
PFAS
•
Additional PFAS (formerly XAgency)
•
Expanded PFAS SEM (formerly PFAS 430)
Litsearch Update: November 2021
Web of Science
Perfluorooctane
•
PFAS 150
Literature Search Update December 2020
PubMed
WOS
Literature Search August 2019
PubMed
Web of Science
Perfluorohexanesulfonic acid
Perfluorooctane
•
PFHxS
Database searches
Pubmed
WOS
Scopus
Pelch PFAS SEM
Other
Inclusion
TiAb
Full Text
Animal Study
Supplemental
TiAb
Other assessments or records with no original data (e.g., reviews etc)
Literature Search Update April 2023
•
PFOA (335-67-1) and PFOS (1763-23-1)
LitSearch Update (Sept 2020 - Feb 2022)
WOS
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