The relationship between DNA adduct formation by benzo[a]pyrene and expression of its activation enzyme cytochrome P450 1A1 in rat

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10191547" target="_blank" >RIV/00216208:11310/13:10191547 - isvavai.cz</a>
Alternative codes found
RIV/62156489:43210/13:43908643
Result on the web
<a href="http://dx.doi.org/10.1016/j.etap.2013.09.004" target="_blank" >http://dx.doi.org/10.1016/j.etap.2013.09.004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.etap.2013.09.004" target="_blank" >10.1016/j.etap.2013.09.004</a>

Result language
angličtina
Original language name
The relationship between DNA adduct formation by benzo[a]pyrene and expression of its activation enzyme cytochrome P450 1A1 in rat
Original language description
Benzo[a]pyrene (BaP) is a human carcinogen requiring metabolic activation prior to reaction with DNA. Cytochrome P450 (CYP) 1A1 is the most important hepatic and intestinal enzyme in both BaP activation and detoxification. CYP1A2 is also capable of oxidizing BaP, but to a lesser extent. The induction of CYP1A1/2 by BaP and/or beta-naphthoflavone in liver and small intestine of rats was investigated. Both BaP and p-naphthoflavone induced CYP1A expression and increased enzyme activities in both organs. Moreover, the induction of CYP1A enzyme activities resulted in an increase in formation of BaP-DNA adducts detected by P-32-postlabeling in rat liver and in the distal part of small intestine in vivo. The increases in CYP1A enzyme activity were also associated with bioactivation of BaP and elevated BaP-DNA adduct levels in ex vivo incubations of microsomes of both organs with DNA and BaP. These findings indicate a stimulating effect of both compounds on BaP-induced carcinogenesis.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
FR - Pharmacology and apothecary chemistry
OECD FORD branch
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Project
<a href="/en/project/GBP303%2F12%2FG163" target="_blank" >GBP303/12/G163: Centre of drug-dietary supplements interactions and nutrigenetics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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