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• W2012693997 abstract "The dichloromethane extract of a coal combustion fly ash sample obtained from an experimental fluidized bed coal combustor was tested for mutagenicity in Salmonella typhimurium and cultured Chinese hamster ovary (CHO) cells. The extract was directly mutagenic in S typhimurium strain TA98 and the nitroreduc-tase deficient strains TA98NR and TA98/1,8DNP6. The mutagenicity observed in TA98NR and TA98/1,8DNP6 was lower than that in TA98. Addition of exogenous Aroclor 1254-induced rat liver supernatant (liver S9) decreased the bacterial mutagenicity of the extract. A different mutagenic response was observed in CHO cells. In the absence of liver S9, although the extract was cytotoxic to CHO cells, no significant mutagenicity was observed. Addition of exogenous liver S9 decreased the cytotoxicity and increased the mutagenicity at both Na+-K+-ATPase and hypoxanthine-guanine phosphoribosyl transferase (HGPRT) gene loci in CHO cells. Using gas chromatography/mass spectrometry (GC/MS) and tandem quadruple mass spectrometry, a number of polynuclear aromatic hydrocarbons (PAHs) and nitrated PAHs (nitro-PAHs) were tentatively identified and quantitated. A possible explanation of the difference in bacterial and mammalian mutagenicity of the extract is that the bacterial mutagenicity was induced by the nitro-PAHs that are potent bacterial mutagens and mammalian mutagenicity was induced by both PAHs and nitro-PAHs that are promutagens." @default.
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• W2012693997 date "1983-01-01" @default.
• W2012693997 modified "2023-10-18" @default.
• W2012693997 title "Comparative mutagenicity of a coal combustion fly ash extract in salmonella typhimurium and chinese hamster ovary cells" @default.
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• W2012693997 doi "https://doi.org/10.1002/em.2860050304" @default.
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