Figure 1.

Cytotoxicity results. Effect of 1 h of pre-treatment with either A) methanol or B) ethyl acetate plant extracts on the survival of SH-SY5Y cells after 72 h exposure to 10 nM rotenone using the sulforhodamine B assay. Significant differences from the rotenone control are indicated by* representing p value < 0.05, while significant differences from vehicle controls are indicated by ■, also representing p value < 0.05. PC = positive control (minocycline at 10 μM); Rot = rotenone; Untr = Vehicle controls. (The dashed-line indicates 100% viability of the vehicle controls while the dotted-line is indicative of the level of cell death induced by the respective rotenone concentrations).