SOD1 and metabolic dysfunction-associated steatotic liver disease: Additionally, we found that the levels of the liver antioxidant function indicators GSH (glutathione), CAT, and SOD (superoxide dismutase) in the model group were notably reduced, while the malondialdehyde (MDA) level was markedly increased (Figure 4H–K), indicating that the liver of the NAFLD mice was damaged by lipid peroxidation and that the liver antioxidant function was impaired.