2-Nitropropane-induced liver DNA and RNA base modifications: differences between Sprague-Dawley rats and New Zealand white rabbits. 1993

E S Fiala, and G Nie, and R Sodum, and C C Conaway, and O S Sohn
Division of Biochemical Pharmacology, American Health Foundation, Valhalla, NY 10595.

2-Nitropropane (2-NP), a hepatocarcinogen in male Sprague-Dawley rats but not, under the same conditions, in male New Zealand White rabbits, induces characteristic base modifications in rat liver DNA and RNA including increases in 8-oxoguanine and the formation of 8-aminoguanine. We compared the levels of these modifications in the two animal species at 6, 18 and 42 h after a single i.p. treatment with 1.12 mmol/kg 2-NP. Significantly less nucleic acid base modifications were found to be produced in rabbit liver than in rat liver. Thus, the relative resistance of the rabbit to the hepatocarcinogenicity of 2-NP correlates with decreased levels of 2-NP-induced liver DNA and RNA base damage.

UI MeSH Term Description Entries
D008099 Liver A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances. Livers
D008297 Male Males
D009153 Mutagens Chemical agents that increase the rate of genetic mutation by interfering with the function of nucleic acids. A clastogen is a specific mutagen that causes breaks in chromosomes. Clastogen,Clastogens,Genotoxin,Genotoxins,Mutagen
D009595 Nitroparaffins Alkanes having one or more nitro (NO2) groups attached to carbon atoms.
D009696 Nucleic Acids High molecular weight polymers containing a mixture of purine and pyrimidine nucleotides chained together by ribose or deoxyribose linkages. Nucleic Acid,Acid, Nucleic,Acids, Nucleic
D009705 Nucleosides Purine or pyrimidine bases attached to a ribose or deoxyribose. (From King & Stansfield, A Dictionary of Genetics, 4th ed) Nucleoside,Nucleoside Analog,Nucleoside Analogs,Analog, Nucleoside,Analogs, Nucleoside
D011407 Propane A three carbon alkane with the formula H3CCH2CH3.
D011817 Rabbits A burrowing plant-eating mammal with hind limbs that are longer than its fore limbs. It belongs to the family Leporidae of the order Lagomorpha, and in contrast to hares, possesses 22 instead of 24 pairs of chromosomes. Belgian Hare,New Zealand Rabbit,New Zealand Rabbits,New Zealand White Rabbit,Rabbit,Rabbit, Domestic,Chinchilla Rabbits,NZW Rabbits,New Zealand White Rabbits,Oryctolagus cuniculus,Chinchilla Rabbit,Domestic Rabbit,Domestic Rabbits,Hare, Belgian,NZW Rabbit,Rabbit, Chinchilla,Rabbit, NZW,Rabbit, New Zealand,Rabbits, Chinchilla,Rabbits, Domestic,Rabbits, NZW,Rabbits, New Zealand,Zealand Rabbit, New,Zealand Rabbits, New,cuniculus, Oryctolagus
D002851 Chromatography, High Pressure Liquid Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
D003849 Deoxyguanosine A nucleoside consisting of the base guanine and the sugar deoxyribose.

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