[en] The mutagenicity of several test compounds was verified by the Salmonella/microsome mutagenicity test (Ames test), using both human liver and rat liver (untreated or pretreated with Aroclor 1254) S9 under identical experimental conditions. Aflatoxin B1, 3-methylcholanthrene, and cigarette-smoke condensate were less mutagenic in the presence of human-liver S9 than in the presence of rat-liver S9 (particularly after treatment with Aroclor 1254). The opposite was observed with 2-aminonanthracene and to a lesser degree with 2-aminofluorene; correlation studies indicate that the two compounds were activated by the same or by very similar enzymes, probably cytochrome P-450s. These results clearly indicate that human-liver S9, as an activating system, behaves differently than rat-liver S9; therefore, it may constitute a useful, additional tool for the study of mutagenicity and probably, carcinogenicity in man.
Disciplines :
General & internal medicine
Author, co-author :
Beaune, P
Lemestre-Cornet, R
Kremers, P
Albert, Adelin ; Université de Liège - ULiège > Département des sciences de la santé publique > Informatique médicale et biostatistique
Gielen, Jacques
Language :
English
Title :
The Salmonella/mammalian microsome mutagenicity test: comparison of human and rat livers as activating systems.
Publication date :
1985
Journal title :
Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis
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