Combination of Lutein and DHA Alleviate H2O2 Induced Cytotoxicity in PC12 Cells by Regulating the MAPK Pathway

Docosahexaenoic acid (DHA) and lutein are important nutrients for brain health. Whether there were synergistic effects of DHA and lutein on the protection against neuronal cell damage induced by oxidative stress remained unclear. The present study was designed to investigate the synergistic effects of DHA and lutein against hydrogen peroxide (H2O2)-induced oxidative challenge in PC12 cells. PC12 cells were divided into different groups and received H2O2 (80 μM), lutein (20 μM)+H2O2 (80 μM), DHA (25 μM)+H2O2 (80 μM), and lutein (20 μM)+DHA (25 μM)+H2O2 (80 μM), respectively. The results indicated that pre-treatment of cells with lutein, DHA and DHA+lutein could significantly antagonize the H2O2-mediated growth inhibition and morphological changes in PC12 cells (p