A study of tobacco carcinogenesis XLIV. Bioassay in A/J mice of some N-nitrosamines.

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作者：

A Rivenson，MV Djordjevic，S Amin，R Hoffmann

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摘要：

The evaluation of the tumorigenic activity in A J mouse lung of certain tobacco N-nitrosamines, namely 3-(methylnitrosamino)propionic acid (NMPA), 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and 4-(methylnitrosamino)-4-(3-pyridyl)-butyric acid (iso-NNAC), had the following results (total dose in μmol per mouse/lung tumors per mouse): NMPA ( 200 7.1 ± 2.9); NNK ( 2 15.7 ± 4.1); iso-NNAC ( 200 0.24 ± 0.43); saline control (0.2 ± 0.4). The tumorigenic activity of NMPA was not surprising since its lower homologue, N-nitrososarcosine, as well as its higher homologue, 4-(methylnitrosamino)-butyric acid, are known carcinogens. The high tumorigenic activity of NNK in strain A J mice confirms earlier findings as to its carcinogenic potency in rats and hamsters. The lack of tumorigenic activity of iso-NNAC supports the observation that the pyridyl rest adjacent to the nitrosamino group inhibits the activity of some tobacco-specific N-nitrosamines (TSNA). Iso-NNAC is most likely formed endogenously from the nicotine metabolites cotinine and 4-(methylamino)-4-(3-pyridyl)butyric acid.

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关键词：

3-(methylnitrosamino)propionic acid 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone 4-(methylnitrosamino)-4-(3-pyridyl)butyric acid lung adenoma

DOI：

10.1016/0304-3835(89)90185-7

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年份：

1989