Figure 3.
Effect of MnSOD on the co-localization of superoxide radicals and OGG1 protein: at the end of incubation in high glucose (4 days) the cells were incubated with Mitotracker Red, washed and fixed with formaldehyde. The cells were permeabilized with Triton X and immunostained for OGG1 using FITC-conjugated secondary antibody. The picture is representative of five different experiments. The accompanying histogram represents the intensity of Mitotracker Red quantified by MetaMorph software in a constant area and constant threshold. 5 mM glucose and 20 mM glucose represent un-transfected cells incubated in 5 mM or 20 mM glucose and 20 mM glucose+SOD=MnSOD transfected cells incubated with 20 mM glucose for 4 days.