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Open Access Green as soon as Postprint is submitted to ZB.
Propane 2-nitronate is more rapidly denitrified and is more genotoxic than 2-nitropropane in cultured rat hepatoma cells.
Toxicol. Lett. 61, 149-157 (1992)
We have investigated the importance of nitronate formation from 2-nitropropane (2-NP) for the oxidative metabolism and the genotoxicity of 2-NP in 2sFou rat hepatoma cells. Treatment of the cells with 2-NP for up to 3 h resulted in the time-dependent appearance of nitrite in the culture medium and in a weak induction of DNA repair synthesis. Both nitrite formation and repair induction were markedly enhanced in cells exposed to the anionic form of 2-NP, propane 2-nitronate. These observations suggest that propane 2-nitronate, rather than 2-NP itself, is oxidized by the liver cells to yield a DNA-damaging product. The results also indicate that the nitro/nitronate equilibration in intact liver cells is slow, suggesting that nitronate formation represents the rate-limiting step in the metabolic activation of 2-NP.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
2-nitropropane ; Denitrification ; Genotoxicity ; Liver ; Nitrite ; Propane 2-nitronate
ISSN (print) / ISBN
0378-4274
e-ISSN
1879-3169
Journal
Toxicology Letters
Quellenangaben
Volume: 61,
Issue: 2-3,
Pages: 149-157
Publisher
Elsevier
Publishing Place
Amsterdam
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institut für Toxikologie