To investigate the effects of quercetin on high-fat-sucrose diet (HFD)-induced nonalcoholic fatty liver disease (NAFLD) injury, we first determined the serum aspartate and alanine transaminases (AST and ALT) levels in control, model and quercetin groups at 30 and 50 days. The gene discussed is GPT; the disease is metabolic dysfunction-associated steatotic liver disease.