Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis 1981-07-01

Mutagenicity studies with o-tolidine and 4,4'-tetramethyldiaminodiphenylmethane.

D H Waalkens, H F Joosten, T D Yih, A Hoekstra

Index: Mutat. Res. 89(3) , 197-202, (1981)

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Abstract

This paper confirms the mutagenicity of 2 carcinogenic chemicals, o-tolidine and 4,4'-tetramethyldiaminodiphenylmethane (TDDM). o-Tolidine and TDDM were both tested in the Salmonella/mammalian-microsome test and in the sister-chromatid exchange (SCE) test with rabbit lymphocytes in vitro. The number of revertants was increased in the presence of S9 mix by o-tolidine in the Salmonella typhimurium strains TA98 and TA1538, and by TDDM in strains TA98 and TA100. Both compounds showed weak SCE-inducing activity in cultured rabbit lymphocytes in the absence, but not in the presence, of an exogenous metabolic system.

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