Figure 7.

Quercetin exacerbated copper-induced neuronal death in P19 cells. P19 neuronal cells were exposed to different concentrations of quercetin (3, 30 and 150 µM) and 0.75 mM CuSO₄. Neuronal viability was determined 24 h from the beginning of treatment using the MTT assay. Quercetin-augmented copper-induced neuronal death at 30 µM. Data are expressed as means ± SEM from five independent experiments performed in quadruplets. ^d P < 0.0001 versus control group; ^** P < 0.05 versus Cu + EEP group (one-way ANOVA followed by post hoc Tukey’s test).