Abstract
Phenylglycidyl ether (1,2-epoxy-3-phenoxy propane) (PGE) was tested for genetic activity in bacterial and mammalian test. It was active in the Salmonella/microsome mutagenicity test. Concentration-dependent mutagenicity was demonstrated in S. typhimurium strains TA1535 and TA100 with and without rat S9, but not in strains TA98, TA1537, or TA1538. These results suggest PGE is a direct-acting mutagen causing base substitutions. Phenylglycidyl ether did not induce 6-thioguanine-resistant mutants of Chinese hamster ovary cells, with or without rat S9, and with or without serum in the medium. Dose-dependent enhancement of SA7 virus transformation of primary hamster embryo cells was observed at concentrations of 1.6 μ/ml and higher. In addition, this compound was able to chemically transform secondary hamster embryo cells at concentrations of 6.2μg/ml and higher. At a dose of 2500 mg/kg p.o., PGE was active in the host-mediated assay using C57B1/6 X C3H mice and S.typhimurium strain TA1535. This activity represented a positive response in 2 of 5 animals tested. Murine testicular DNA synthesis was not inhibited by oral administration of PGE at 500 mg/kg.
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