Oxidative Medicine and Cellular Longevity / 2013 / Article / Fig 7

Research Article

Major Components of Energy Drinks (Caffeine, Taurine, and Guarana) Exert Cytotoxic Effects on Human Neuronal SH-SY5Y Cells by Decreasing Reactive Oxygen Species Production

Figure 7

Total reactive antioxidant potential (TRAP) and total antioxidant reactivity (TAR) on human neuronal SH-SY5Y cells exposed to major components of EDs. TRAP and TAR measurements on guarana-treated cells (2 hours) at concentrations of 3.125, 6.25, 12.5, 25, and 50 mg/mL (a), caffeine-treated cells (2 hours) at concentrations of 0.125, 0.25, 0.5, 1, and 2 mg/mL (b), and taurine-treated cells (2 hours) at concentrations of 1, 2, 4, 8, and 16 mg/mL (c). TRAP is shown as a representative graphic of the area under the curve (AUC) for 2 hours, and TAR is calculated as the ratio of light in the absence of samples /light intensity right after sample addition ( ). Values are expressed as mean ± SEM of three independent experiments ( ). Statistical difference compared to control was determined by one-way ANOVA followed by Dunnett’s multiple comparison test ( ; ; ).