Figure 10.

Antioxidant enzyme activity and oxidative damage parameters on human neuronal SH-SY5Y cells treated for 2 hours with drug combinations (guarana, caffeine, and taurine). Measurements for SOD (a), CAT (b), GPx (c), GST (d), SH (e), and TBARS (f) at different drug concentrations (mg/mL) are shown. Values are expressed as mean ± SEM of three independent experiments (n = 3). Statistical difference compared to control was determined by one-way ANOVA followed by Dunnett's multiple comparison test (*P < 0.05; **P < 0.01; ***P < 0.001).