Title : Lack of correlation between DNA methylation and hepatocarcinogenesis in rats and hamsters treated with 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone.

Pub. Date : 1992 Nov

PMID : 1423885






10 Functional Relationships(s)
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1 The aim of this study was to determine whether there was a correlation between the persistence of O6-methylguanine (O6-mGua) adducts and the rate of recovery of O6-methylguanine-DNA methyltransferase (O6-mGuaT) after depletion in the liver and susceptibility to NNK in F344 rat and Syrian golden hamster injected s.c. with NNK (80 mg/kg). O-(6)-methylguanine O-6-methylguanine-DNA methyltransferase Rattus norvegicus
2 The aim of this study was to determine whether there was a correlation between the persistence of O6-methylguanine (O6-mGua) adducts and the rate of recovery of O6-methylguanine-DNA methyltransferase (O6-mGuaT) after depletion in the liver and susceptibility to NNK in F344 rat and Syrian golden hamster injected s.c. with NNK (80 mg/kg). O-(6)-methylguanine O-6-methylguanine-DNA methyltransferase Rattus norvegicus
3 The aim of this study was to determine whether there was a correlation between the persistence of O6-methylguanine (O6-mGua) adducts and the rate of recovery of O6-methylguanine-DNA methyltransferase (O6-mGuaT) after depletion in the liver and susceptibility to NNK in F344 rat and Syrian golden hamster injected s.c. with NNK (80 mg/kg). O-(6)-methylguanine O-6-methylguanine-DNA methyltransferase Rattus norvegicus
4 The aim of this study was to determine whether there was a correlation between the persistence of O6-methylguanine (O6-mGua) adducts and the rate of recovery of O6-methylguanine-DNA methyltransferase (O6-mGuaT) after depletion in the liver and susceptibility to NNK in F344 rat and Syrian golden hamster injected s.c. with NNK (80 mg/kg). O-(6)-methylguanine O-6-methylguanine-DNA methyltransferase Rattus norvegicus
5 The aim of this study was to determine whether there was a correlation between the persistence of O6-methylguanine (O6-mGua) adducts and the rate of recovery of O6-methylguanine-DNA methyltransferase (O6-mGuaT) after depletion in the liver and susceptibility to NNK in F344 rat and Syrian golden hamster injected s.c. with NNK (80 mg/kg). 4-(N-methyl-N-nitrosamino)-1-(3-pyridyl)-1-butanone O-6-methylguanine-DNA methyltransferase Rattus norvegicus
6 The aim of this study was to determine whether there was a correlation between the persistence of O6-methylguanine (O6-mGua) adducts and the rate of recovery of O6-methylguanine-DNA methyltransferase (O6-mGuaT) after depletion in the liver and susceptibility to NNK in F344 rat and Syrian golden hamster injected s.c. with NNK (80 mg/kg). 4-(N-methyl-N-nitrosamino)-1-(3-pyridyl)-1-butanone O-6-methylguanine-DNA methyltransferase Rattus norvegicus
7 O6-mGua in NNK-treated rat liver was undetectable after 48 h. In the rat, the depletion of O6-mGuaT activity occurred within 4 h following NNK treatment. O-(6)-methylguanine O-6-methylguanine-DNA methyltransferase Rattus norvegicus
8 An aldehyde generated by alpha-hydroxylation of NNK, 4-oxo-4-(3-pyridyl)butanal, inhibited O6-mGuaT activity in rat hepatocytes, suggesting that this aldehyde contributes to the carcinogenicity of NNK by inhibiting this repair enzyme. Aldehydes O-6-methylguanine-DNA methyltransferase Rattus norvegicus
9 An aldehyde generated by alpha-hydroxylation of NNK, 4-oxo-4-(3-pyridyl)butanal, inhibited O6-mGuaT activity in rat hepatocytes, suggesting that this aldehyde contributes to the carcinogenicity of NNK by inhibiting this repair enzyme. 4-oxo-4-(3-pyridinebutanal) O-6-methylguanine-DNA methyltransferase Rattus norvegicus
10 An aldehyde generated by alpha-hydroxylation of NNK, 4-oxo-4-(3-pyridyl)butanal, inhibited O6-mGuaT activity in rat hepatocytes, suggesting that this aldehyde contributes to the carcinogenicity of NNK by inhibiting this repair enzyme. Aldehydes O-6-methylguanine-DNA methyltransferase Rattus norvegicus