Figure 1.

LBP reduces H₂O₂-induced cytotoxicity. (A) Effect of LBP on the viability of ARPE-19 cells treated with different concentrations of LBP (0, 0.25, 0.5, 1 and 2 mg/ml) for 24 h. (B) Effect of H₂O₂ on the viability of ARPE-19 cells. ARPE-19 cells were treated with different concentrations of H₂O₂ (0, 125, 250, 500 and 1,000 µM) for 2 h. (C) Effect of LBP on H₂O₂-induced cytotoxicity in ARPE-19 cells. ARPE-19 cells were pretreated with different concentrations of LBP (0.5, 1 and 2 mg/ml) for 24 h followed by 500 µM H₂O₂ for 2 h. Data are presented as the mean ± SEM (n=3). *P<0.05, **P<0.01 vs. control; ^##P<0.001 vs. H₂O₂-treated cells with no LBP pretreatment. LBP, Lycium barbarum polysaccharide.