Abstract:Objective:To study protective effect of oxidative damage model of ARPE-19 cells and naringenin phospholipid complex(NPC) on ARPE- 19 cells with oxidative damage. Methods: According to the best preparation process recorded on literature, NPC was prepared. The solubility of NPC in water was determined. According to the effect of different concentrations of Tert-butyl hydroperoxlde(T-BHP) on the survival rate of ARPE-19 cells,the best oxidative damage model was selected. ARPE- 19 cells were divided into the solvent group, the model group, the naringenin groups of lowdose, medium-dose and high-dose,the NPC groups of low-dose,medium-dose and high-dose. The solvent group was cultured with dimethyl sulfoxide(DMSO) ; the other group was intervened with 200 μmol/L T-BHP;the naringenin groups of low- dose, medium- dose and high- dose were intervened with 100 μmol/L, 200 μmol/L and 400 μmol/L naringenin respectively;the NPC groups of low- dose,medium- dose group and high- dose were intervened with NPC of 100 μmol/L, 200 μmol/L and 400 μmol/L, respectively. MTT method was used to detect the cell survival rate, and flow cytometry was used to detect the apoptosis rate. Results: Compared with naringenin, the solubility of naringenin phospholipid mixture and NPC in water was increased(P<0.01). Compared with naringenin phospholipid mixture, the solubility of NPC in water was increased(P<0.01). When the concentration of T- BHP was 200 μmol/L,the survival rate of ARPE-19 cells was 50%,which was the best oxidative damage model. Compared with the solvent group,the survival rate of ARPE-19 cells in the model group was significantly decreased(P<0.01),and the apoptosis rate was significantly increased (P<0.01). Compared with the model group,the survival rate in the naringenin groups of medium-dose and high-dose as well as the NPC groups of low- dose, medium- dose and high- dose was increased(P<0.05), and the apoptosis rate was decreased(P<0.01). Compared with the low-dose NPC group,the cell survival rate in the NPC groups of medium-dose and high- dose was increased(P<0.05), and the apoptosis rate was decreased(P<0.01). Compared with the low- dose NPC group,the apoptosis rate in the naringenin groups of low-dose and medium-dose was increased(P<0.01). Compared with the medium-dose NPC group,the survival rate in the naringenin groups of low-dose,medium-dose and high-dose as well as the low- dose NPC group was decreased(P<0.05), and the apoptosis rate was increased(P<0.01). Compared with the high-dose NPC group,the survival rate in the naringenin groups of low-dose,medium-dose and high-dose as well as the low- dose NPC group was decreased(P<0.05), and the apoptosis rate was increased(P<0.01). Conclusion: When the phospholipid complex of naringenin forms, the water solubility and biological activity of naringenin increases, and its protective effect on ARPE-19 cells with oxidative damage is significantly enhanced.