Co-carcinogenicity of sodium saccharin and N-[4-(5-nitro-2-furyl)-2-thiazolyl]formamide for the urinary bladder

Gen'i Murasaki, Samuel M. Cohen

Research output: Contribution to journalArticle

30 Scopus citations

Abstract

The co-carcinogenic activity of sodium saccharin and N-[4-(5-nitro-2-furyl)-2-thiazolyl]formamide (FANFT) was evaluated in male Fischer rats by co-administering them as 5% and 0.005% of the diet, respectively, for 2 years. The effect of simultaneous administration of two urinary bladder promoting substances, sodium saccharin and L-tryptophan as 5% and 2% of the diet, respectively, was also evaluated. Five of 16 rats administered sodium saccharin plus FANFT developed bladder tumors whereas none of the rats administered FANFT, sodium saccharin, or L-tryptophan alone, sodium saccharin plus L-tryptophan, or the control diet developed bladder tumors. Possible mechanisms for the co-carcinogenic activity of sodium saccharin and FANFT are discussed.

Original languageEnglish (US)
Pages (from-to)97-99
Number of pages3
JournalCarcinogenesis
Volume4
Issue number1
DOIs
StatePublished - 1983

ASJC Scopus subject areas

  • Cancer Research

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