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@inproceedings{618447,
author = {Bartoš, Tomáš and Letzsch, Stefan and Škarek, Michal and Flegrová, Zuzana and Čupr, Pavel and Holoubek, Ivan},
address = {Brno},
booktitle = {ECOTOX 2005 Book of abstracts},
edition = {2005},
keywords = {GFP; genotoxicity; azaarene},
language = {eng},
location = {Brno},
isbn = {80-210-3799-7},
pages = {113-113},
publisher = {RECETOX},
title = {GFP assay as a sensitive eukaryotic screening model to detect toxic and genotoxic activity of azaarenes},
year = {2005}
}
TY - JOUR
ID - 618447
AU - Bartoš, Tomáš - Letzsch, Stefan - Škarek, Michal - Flegrová, Zuzana - Čupr, Pavel - Holoubek, Ivan
PY - 2005
TI - GFP assay as a sensitive eukaryotic screening model to detect toxic and genotoxic activity of azaarenes
PB - RECETOX
CY - Brno
SN - 8021037997
KW - GFP
KW - genotoxicity
KW - azaarene
N2 - Azaarenes contain nitrogen atom in place of a carbon atom. The majority of the azaarenes found in the environment originates from anthropogenic sources. Concentrations of NPAHs found in the environment are reported to be one to two orders of magnitude lower than PAH concentrations, but their biological effects can be of similar magnitude. Very few studies on the genotoxicity of azaarenes are available in the literature. In the present study, a preliminary profile of both the toxic and genotoxic potential of 5 PAHs and their 20 aza-analogues was investigated. To assess the toxic and genotoxic activity a GPF assay based on the yeast Saccharomyces cerevisiae was selected. To compare the sensitivity of this eukaryotic short-term assay with bacterial screening tests, Toxi-Chromotest for toxicity and SOS-Chromotest for genotoxicity assessment were also performed. This comparison indicates that in most cases the yeast GFP assay is apparently of comparable specificity to the bacterial toxicity or genotoxicity tests concerning correlation of positive/negative responses, but much more sensitive concerning effective concentration values. In cases of phenazine, phenanthridine, 1,10-phenanthroline or 4,7-phenanthroline one to two orders of magnitude lower EC20 and MGC values in the yeast GFP assay were observed. In this study we present evidence that genotoxicity assessment using the yeast GFP assay can provide a simple system to monitor the activity of these environmental pollutants that could posses mutagenic potential at low concentrations.
ER -
BARTOŠ, Tomáš, Stefan LETZSCH, Michal ŠKAREK, Zuzana FLEGROVÁ, Pavel ČUPR a Ivan HOLOUBEK. GFP assay as a sensitive eukaryotic screening model to detect toxic and genotoxic activity of azaarenes. In \textit{ECOTOX 2005 Book of abstracts}. 2005. vyd. Brno: RECETOX, 2005, s.~113. ISBN~80-210-3799-7.
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