Reference: Sumida K, et al. (2001) Evaluation of in vitro methods for detecting the effects of various chemicals on the human progesterone receptor, with a focus on pyrethroid insecticides. Toxicol Lett 118(3):147-55

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Abstract


The progesterone receptor (PR) is associated with physiological events such as implantation and the maintenance of pregnancy. Recently, it has become a social concern that chemicals may exert agonistic or antagonistic effects on hormone receptors. Therefore, we examined the effects of various chemicals on the human PR, with a focus on pyrethroid insecticides, using three in vitro methods. Eight pyrethroid insecticides (fenvalerate, d-allethrin, d-phenothrin, prallethrin, empenthrin, permethrin, cypermethrin and imiprothrin), examples of environmental pollutants and positive control chemicals were subjected to a reporter gene assay (luciferase assay) using human breast cancer T-47D cells, a two-hybrid assay and a binding assay using the same whole cells or receptors (cell-free). In none of these did the eight pyrethroid insecticides show any binding to the PR, agonistic or antagonistic effects.

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Evaluation Study | Journal Article
Authors
Sumida K, Saito K, Ooe N, Isobe N, Kaneko H, Nakatsuka I
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