Figure 6.

Licorice TE and compounds attenuate MPP+-induced increase in caspase 3/7 activities. Cells were pre-treated with 50 µg/mL of licorice TE and 2.5 µg/mL of compounds before exposure to 2000 µM of MPP+ for 24 h, and caspase 3/7 activities were determined. Each bar represents the level of caspase 3/7 expressed as a multiple of the control, and significance of difference is indicated by ** p < 0.01 and *** p < 0.001 when TE/compounds were compared to MPP+, and Φ when MPP+-treated cells were compared to control.