UGT1A1 and metabolic dysfunction-associated steatotic liver disease: The expression levels of metabolic enzymes UGT1A1 and the nine transporter proteins, that is, NTCP, OATP1A1, OCT1, MATE1, MRP2, MDR1, BSEP, OATP1A2, and OATP1A4, were significantly lower in NAFLD rats than in normal rats.