Fig. 5.

Effects of aqueous, methanol, and hexane extracts of Piper sarmentosum on the SOD activity in H₂O₂-induced HUVECs

Treatment groups: 1, negative control; 2, 180 µmol/L H₂O₂ (positive control); 3, 100 µg/ml PS; 4, 150 µg/ml PS; 5, 250 µg/ml PS; 6, 300 µg/ml PS. Values are mean±SD of three independent experiments. ^* P<0.05 compared with negative control group; ^# P<0.05 compared with positive control group