首页> 美国政府科技报告 >Metabolism of 1-Nitropyrene by Human, Rat, and Mouse Intestinal Flora:Mutagenicity of Isolated Metabolites by Direct Analysis of HPLC Fractions with a Microsuspension Reverse Mutation Assay
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Metabolism of 1-Nitropyrene by Human, Rat, and Mouse Intestinal Flora:Mutagenicity of Isolated Metabolites by Direct Analysis of HPLC Fractions with a Microsuspension Reverse Mutation Assay

机译:人,大鼠和小鼠肠道菌群对1-硝基芘的代谢:通过微量悬浮反向突变试验直接分析HpLC级分分离的代谢物的致突变性

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Among the nitro-substituted polycyclic aromatic hydrocarbons identified inenvironmental samples and known to be genotoxic, 1-nitropyrene is one of the most abundant. The biotransformation of 1-nitro((14)C)pyrene by human, rat, and mouse intestinal microflora and the mutagenicity of the isolated metabolites by direct analysis of the HPLC fractions with a microsuspension mutation assay were investigated. 1-nitro((14)C)pyrene was metabolized by human, rat and mouse intestinal microflora to the following reductive metabolites; 1-aminopyrene, Nacetylaminopyrene, N-formyl-1-aminopyrene and two unknown metabolites identified as A and B. The predominant metabolite of 1-nitro((14)C)pyrene produced by human, rat or mouse intestinal microflora following a 12 h incubation was 1-aminopyrene which accounted for 79 to 93% of the total (14)C respectively. Only minor amounts

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