PPARD and metabolic dysfunction-associated steatotic liver disease: PPARα, PPARδ and PPARγ are peroxisome proliferator‐activated receptors (PPARs), which are important factors in the development of NAFLD.28, 29 PPARα is primarily expressed in the liver and up‐regulated in fatty liver, which can accelerate the formation of FAs caused through the lipolysis in liver adipose tissue by regulating the expression of apolipoproteins.