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Genotoxicity studies with four organophosphorus insecticides using the unstable white-zeste system of Drosophila
N Xamena1, A Velázquez, M Batiste-Alentorn
1Departament de Genètica i Microbiologia, Universitat Autònoma de Barcelona, Bellaterra, Spain.
Abstract:
The present study was carried out to evaluate the suitability of the unstable white-zeste system in Drosophila melanogaster by testing 4 organophosphorus insecticides for potential genotoxic activity: dimethoate, fenitrothion, malathion, and methyl parathion. In view of the high sensitivity to insecticides of the unstable zeste strain used in this assay and the negative results obtained in this work, the white-zeste system does not appear to be sufficiently accurate for the evaluation of the mutagenic potential of specifically toxic chemicals, like insecticides.
Insights
The white-zeste system in Drosophila melanogaster is not accurate for testing insecticide mutagenicity due to high sensitivity and negative results. This system is unsuitable for evaluating the genotoxic potential of toxic chemicals like organophosphorus insecticides.
Area of Science:
- * Toxicology and Genetics
- * Insecticide Genotoxicity Assessment
Background:
- * The white-zeste system in Drosophila melanogaster is a sensitive genetic assay.
- * Organophosphorus insecticides are widely used but require genotoxicity evaluation.
Purpose of the Study:
- * To assess the suitability of the unstable white-zeste system for detecting genotoxic activity of organophosphorus insecticides.
- * To evaluate the mutagenic potential of dimethoate, fenitrothion, malathion, and methyl parathion.
Main Methods:
- * Utilized the unstable white-zeste system in Drosophila melanogaster.
- * Tested four organophosphorus insecticides: dimethoate, fenitrothion, malathion, and methyl parathion.
Main Results:
- * The study yielded negative results for genotoxic activity of the tested insecticides.
- * The white-zeste strain exhibited high sensitivity to insecticides.
Conclusions:
- * The unstable white-zeste system is not sufficiently accurate for evaluating the mutagenic potential of insecticides.
- * The system's high sensitivity and negative outcomes indicate limitations for assessing specifically toxic chemicals.