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- W2087050687 abstract "The effects of chronic exposure to three sulphur-containing heterocyclic N-nitrosamines were determined after repeated oral administration to female Fischer 344 rats. Nitrosothiazolidine did not significantly affect the survival of the rats or the incidence of tumours at a total dose of 3.5 mmol. Nitrosodithiazine, an analogue of nitrosothiazolidine which contains an extra sulphur atom inserted between the carbons of its CH2CH2 moiety, produced only three tumours (two of the nasal mucosa) in a group of 20 rats at a total dose of 1.75 mmol/rat. Nitrosothialdine, the all-cis 2,4,6-trimethylanalogue of nitrosodithiazine, was a potent carcinogen that significantly shortened the lifespan and produced oesophageal tumours in 70% of treated rats as well as numerous tumours of the tongue and liver; this outcome was unexpected because α-methyl substitution in other heterocyclic nitrosamines usually reduces or eliminates tumorigenicity. The results extend the data base on the carcinogenic activity of moleculescontaining both divalent sulphur and the nitros nitrosothiazolidine in this study suggests that its presence in the human food supply presents a relatively minor risk." @default.
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- W2087050687 date "1988-01-01" @default.
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- W2087050687 title "Carcinogenesis in rats by cyclic N-nitrosamines containing sulphur" @default.
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- W2087050687 doi "https://doi.org/10.1016/0278-6915(88)90034-8" @default.
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