Mutation analyses of a series of TNT-related compounds using the CHO-hprt assay

Stephen Kennel, Linda J. Foote, Max Morris, Arpad A. Vass, Wayne H. Griest

Research output: Contribution to journalArticle

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Abstract

Trinitrotoluene (TNT) and related compounds were tested for induction of mutation in the CHO-hprt mutation assay. The parent compound, TNT, was consistently found to be mutagenic at concentrations above 40 μg ml-1, whether or not S9 activating enzymes were added. Five TNT metabolites gave statistically significant but small increases in mutation frequency over solvent controls: 4-amino-2,6 dinitrotoluene, 2,4′,6,6′-tetranitro-2′,4-azoxytoluene, 2,2′,6,6′-tetranitro-4,4′-azoxytoluene, 2′,4,6,6′tetranitro-2,4′-azoxytoluene and triaminotoluene. Clear dose-response relationships could not be established for the mutagenic response of these compounds. They are considered as very weak mutagens in this mammalian test system. Five compounds did not produce statistically significant mutation frequencies at the levels tested: 2-amino-4,6-dinitrotoluene, 2,4-diamino-6-nitrotoluene, 1,3,5-trinitrobenzene, 2,6-diamino-4-nitrotoluene and 4,4′,6,6′-tetranitro-2,2′-azoxytoluene. The results indicate that none of the TNT metabolites tested pose a significant mutational health risk, at least as judged by the CHO-hprt assay.

Original languageEnglish (US)
Pages (from-to)441-448
Number of pages8
JournalJournal of Applied Toxicology
Volume20
Issue number6
DOIs
StatePublished - 2000
Externally publishedYes

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Trinitrotoluene
Assays
Mutation
Mutation Rate
Metabolites
Health risks
Mutagens
Health
Enzymes

All Science Journal Classification (ASJC) codes

  • Toxicology
  • Health, Toxicology and Mutagenesis

Cite this

Mutation analyses of a series of TNT-related compounds using the CHO-hprt assay. / Kennel, Stephen; Foote, Linda J.; Morris, Max; Vass, Arpad A.; Griest, Wayne H.

In: Journal of Applied Toxicology, Vol. 20, No. 6, 2000, p. 441-448.

Research output: Contribution to journalArticle

Kennel, Stephen ; Foote, Linda J. ; Morris, Max ; Vass, Arpad A. ; Griest, Wayne H. / Mutation analyses of a series of TNT-related compounds using the CHO-hprt assay. In: Journal of Applied Toxicology. 2000 ; Vol. 20, No. 6. pp. 441-448.
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