GPT and metabolic dysfunction-associated steatotic liver disease: The activities of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and γ-glutamyl transpeptidase (GGT) in the serum and the level of malondialdehyde (MDA) in the liver were measured to confirm the improvement in liver function by SGL 121 in NAFLD-induced mice, with reduced liver function.