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Bisphenol A and estrone‐induced developmental effects in early chick embryos
Author(s) -
Saito Kenichi,
Niijima Azusa,
Kamite Eri,
Watanabe Mari
Publication year - 2012
Publication title -
environmental toxicology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.813
H-Index - 77
eISSN - 1522-7278
pISSN - 1520-4081
DOI - 10.1002/tox.20614
Subject(s) - estrone , bisphenol a , embryo , chemistry , biology , environmental chemistry , andrology , endocrinology , microbiology and biotechnology , estrogen , medicine , organic chemistry , epoxy
Endocrine disruptors, especially estrogenic substances, are thought to affect the reproduction and development of animals, including humans. We therefore assessed whether bisphenol A (BPA) or estrone (E1) had any adverse effects on chick embryogenesis. Fertilized eggs of white Leghorns were obtained within 24 h after laying. Embryos were administered 0.1, 1.0, and 10.0 mM BPA, and administered 10, 100 nM, and 1 μM E1, and incubated for 48 h at 37 ± 0.5°C and >80% relative humidity with one rotation per hour. The embryos were excised, fixed in 70% ethanol and viewed under a stereomicroscope. Their morphological abnormalities and numbers of somites were recorded. There were no significant difference in the average number of somites in embryos administered BPA and controls. Abnormal embryogenesis, however, showed dose‐related increases caused by BPA and E1. © 2011 Wiley Periodicals, Inc. Environ Toxicol, 2012.