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@ARTICLE{Brta:119616,
author = {F. Bárta and K. Levová and E. Frei$^*$ and H.
Schmeiser$^*$ and V. M. Arlt and M. Stiborová},
title = {{T}he effect of aristolochic acid {I} on expression of
{NAD}({P}){H}:quinone oxidoreductase in mice and rats--a
comparative study.},
journal = {Mutation research / Genetic toxicology and environmental
mutagenesis},
volume = {768},
issn = {1383-5718},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {DKFZ-2017-00247},
pages = {1 - 7},
year = {2014},
abstract = {Aristolochic acid is the cause of aristolochic acid
nephropathy (AAN) and Balkan endemic nephropathy (BEN) and
their associated urothelial malignancies. Using Western
blotting, we investigated the expression ofquinone
oxidoreductase (NQO1), the most efficient cytosolic enzyme
that reductively activates aristolochic acid I (AAI) in mice
and rats. In addition, the effect of AAI on the expression
of the NQO1 protein and its enzymatic activity in these
experimental animal models was examined. We found that NQO1
protein levels in cytosolic fractions isolated from liver,
kidney and lung of mice differed from those expressed in
these organs of rats. In mice, the highest levels of NQO1
protein and NQO1 activity were found in the kidney, followed
by lung and liver. In contrast, the NQO1 protein levels and
enzyme activity were lowest in rat-kidney cytosol, whereas
the highest amounts of NQO1 protein and activity were found
in lung cytosols, followed by those of liver. NQO1 protein
and enzyme activity were induced in liver and kidney of
AAI-pretreated mice compared with those of untreated mice.
NQO1 protein and enzyme activity were also induced in rat
kidney by AAI. Furthermore, the increase in hepatic and
renal NQO1 enzyme activity was associated with AAI
bio-activation and elevated AAI-DNA adduct levels were found
in ex vivo incubations of cytosolic fractions with DNA and
AAI. In conclusion, our results indicate that AAI can
increase its own metabolic activation by inducing NQO1,
thereby enhancing its own genotoxic potential.},
keywords = {Aristolochic Acids (NLM Chemicals) / Carcinogens (NLM
Chemicals) / aristolochic acid I (NLM Chemicals) / NAD(P)H
Dehydrogenase (Quinone) (NLM Chemicals) / NQO1 protein, rat
(NLM Chemicals) / Nqo1 protein, mouse (NLM Chemicals)},
cin = {C016 / E030},
ddc = {570},
cid = {I:(DE-He78)C016-20160331 / I:(DE-He78)E030-20160331},
pnm = {315 - Imaging and radiooncology (POF3-315)},
pid = {G:(DE-HGF)POF3-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:24769487},
doi = {10.1016/j.mrgentox.2014.01.012},
url = {https://inrepo02.dkfz.de/record/119616},
}