In vitro and in silico approach to study the hormonal activities of the alternative plasticizer tri-(2-ethylhexyl) trimellitate TEHTM and its metabolites.
Benzoates
/ metabolism
Cell Line, Tumor
Computer Simulation
Endocrine Disruptors
/ metabolism
Estradiol
/ metabolism
Humans
Molecular Docking Simulation
Plasticizers
/ metabolism
Receptors, Androgen
/ drug effects
Receptors, Estrogen
/ drug effects
Receptors, Thyroid Hormone
/ drug effects
Testosterone
/ metabolism
In silico
Medical devices
Steroidogenesis
T-screen assay
TEHTM
hER and hAR reporter gene assays
Journal
Archives of toxicology
ISSN: 1432-0738
Titre abrégé: Arch Toxicol
Pays: Germany
ID NLM: 0417615
Informations de publication
Date de publication:
03 2022
03 2022
Historique:
received:
17
08
2021
accepted:
12
01
2022
pubmed:
29
1
2022
medline:
30
3
2022
entrez:
28
1
2022
Statut:
ppublish
Résumé
Tri-(2-ethylhexyl) trimellitate (TEHTM) is a plasticizer for polyvinyl chloride (PVC) material used in medical devices. It is an alternative to di-(2-ethylhexyl) phthalate (DEHP), a well-known reprotoxic and endocrine disruptor. As plasticizers are known to easily migrate when in contact with fatty biological fluids, patient exposure to TEHTM is highly probable. However, there is currently no data on the potential endocrine-disrupting effects of its human metabolites. To evaluate the effects of TEHTM metabolites on endocrine activity, they were first synthesized and their effects on estrogen, androgen and thyroid receptors, as well as steroid synthesis, were investigated by combining in vitro and in silico approaches. Among the primary metabolites, only 4-MEHTM (4-mono-(2-ethylhexyl) trimellitate) showed agonist activities on ERs and TRs, while three diesters were TR antagonists at non-cytotoxic concentrations. These results were completed by docking experiments which specified the ER and TR isoforms involved. A mixture of 2/1-MEHTM significantly increased the estradiol level and reduced the testosterone level in H295R cell culture supernatants. The oxidized secondary metabolites of TEHTM had no effect on ER, AR, TR receptors or on steroid hormone synthesis. Among the fourteen metabolites, these data showed that two of them (4-MEHTM and 2/1-MEHTM) induced effect on hormonal activities in vitro. However, by comparing the concentrations of the primary metabolites found in human urine with the active concentrations determined in bioassays, it can be suggested that the metabolites will not be active with regard to estrogen, androgen, thyroid receptors and steroidogenesis-mediated effects.
Identifiants
pubmed: 35089383
doi: 10.1007/s00204-022-03230-4
pii: 10.1007/s00204-022-03230-4
doi:
Substances chimiques
Benzoates
0
Endocrine Disruptors
0
Plasticizers
0
Receptors, Androgen
0
Receptors, Estrogen
0
Receptors, Thyroid Hormone
0
tri-(2-ethylhexyl)trimellitate
3319-31-1
Testosterone
3XMK78S47O
Estradiol
4TI98Z838E
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
899-918Informations de copyright
© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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