CAT and acute respiratory distress syndrome: Ye et al have reported that the overexpression of MUC1 could increase the superoxide dismutase (SOD) level and catalase (CAT) and glutathione catalase (GSH-Px) activities and decrease the myeloperoxidase (MPO) activity and malondialdehyde (MDA) content in lipopolysaccharide (LPS)-induced ALI cells [16].