SOD1 and atherosclerosis: SOD is an important radical superoxide scavenger known to protect cells from oxidative damage.28 Meanwhile, MDA is a decomposition product of lipid hydroperoxides, which could be used as an indicator of oxidative damage to cells and tissues.28 Some studies have shown that DMY could increase the activities of SOD and decreased the contents of MDA in atherosclerosis animal models and cells.29, 30 To study the protect effect of DMY in oxidative stress, we investigated the DMY effect of the production of ROS and MDA on HUVECs induced by SNP.