Fig. 6: Changes in the activity of antioxidant enzymes in NHEM transfected with control shRNA, ATG7 shRNA, empty vector, or lentivirus ATG7 with or without H2O2 and UVB treatment.

a The enzyme catalase (CAT) activity of transfected NHEM treated with or without H2O2 or UVB. b The glutathione peroxidase (GSH-PX) activity of transfected NHEM treated with or without H2O2 or UVB. c The enzyme superoxide dismutase (SOD) activity of transfected NHEM treated with or without H2O2 or UVB. The data represent the mean ± SD from three independent experiments. *P < 0.05, **P < 0.01, ns, nonsignificant.