Artículos de revistas
Comparative study of cytotoxic and genotoxic effects induced by herbicide S-metolachlor and its commercial formulation Twin Pack Gold® in human hepatoma (HepG2) cells
Fecha
2013-10Registro en:
Nikoloff, Noelia; Escobar, Luciana Ines; Soloneski, Sonia Maria Elsa; Larramendy, Marcelo Luis; Comparative study of cytotoxic and genotoxic effects induced by herbicide S-metolachlor and its commercial formulation Twin Pack Gold® in human hepatoma (HepG2) cells; Elsevier; Food And Chemical Toxicology; 62; 10-2013; 777-781
0278-6915
CONICET Digital
CONICET
Autor
Nikoloff, Noelia
Escobar, Luciana Ines
Soloneski, Sonia Maria Elsa
Larramendy, Marcelo Luis
Resumen
The in vitro effects of S-metolachlor and its formulation Twin Pack Gold® (96% a.i.) were evaluated in human hepatoma (HepG2) cells. Cytokinesis-blocked micronucleus cytome (CBMN-cyt) and MTT assays as well as Neutral Red uptake were employed for genotoxicity and cytotoxicity evaluation. Activities were tested within the concentration range of 0.25–15 μg/ml S-metolachlor for 24 h of exposure. Both compounds rendered a minor reduction in the NDI although not reaching statistical significance. Results demonstrated that the S-metolachlor was not able to induce MNs. On the other hand, 0.5–6 μg/ml Twin Pack Gold® increased the frequency of MNs. When cytotoxicity was estimated, S-metolachlor was not able to induce either a reduction of lysosomal or mitochondrial activity. Contrarily, whereas 1–15 μg/ml Twin Pack Gold® induced a significant reduction of mitochondrial activity, all tested concentrations of the formulated product induced a significant decrease of lysosomal performance as a function of the concentration of the S-metolachlor-based formulation titrated into cultures. Genotoxicity and cytotoxicity differences obtained with pure S-metolachlor and the commercial S-metolachlor-based formulation indicate that the latter may contain additional unsafe xenobiotics and support the concept of the importance of evaluating not only the active principle but also the commercial formulation when estimating the real hazard from agrochemicals.