Title: Application of multielectrode array (MEA) chips for the evaluation of mixtures neurotoxicity
Citation: TOXICOLOGY vol. 299 no. 2/3 p. 172-183
Publication Year: 2012
JRC N°: JRC69255
ISSN: 0300-483X
URI: http://www.sciencedirect.com/science/article/pii/S0300483X1200176X
DOI: 10.1016/j.tox.2012.05.020
Type: Articles in periodicals and books
Abstract: Cortical neurons grown on multi electrode array (MEA) chips have been shown to be a valuable alternative method to study electrophysiological properties of the central nervous system and to perform functional toxicological screening. Here we studied the effects of binary mixtures on neuronal networks cultured on MEAs. We have considered compounds with similar and different mode-of-action (MoA) to characterize and assess their combined effects. Individual and binary mixture dose-response curves based on spontaneous neuronal activity have been generated and the IC50 has been considered as the end-point for neurotoxicity assessment. The two classical approaches of mixtures toxicity studies: Concentration Addition (CA) and Independent Action (IA) have been applied to compare calculated and experimental results. Nuclear Magnetic Resonance (NMR) spectroscopy has been employed to confirm no chemical reaction or complexation between mixtures components. The results suggest that both CA and IA are able to predict the toxicity of the mixture and that the combination of in vitro test methods with in silico approaches has a strong potential as an alternative tool for the prediction of mixtures neurotoxicity.
JRC Directorate:Institute for Health and Consumer Protection Historical Collection

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