Bile acid elimination pathway

The "bile acid elimination pathway" is not a single molecule, receptor, or protein but rather refers to a series of biochemical processes by which the body detoxifies and eliminates bile acids. This includes metabolic modifications such as sulfation—primarily catalyzed by sulfotransferase enzymes like SULT2A1—which increases the water solubility of bile acids, reduces their intestinal reabsorption, and enhances their excretion in urine and feces. Sulfated bile acids are less toxic than unsulfated forms, making this an important detoxification route especially under pathological conditions such as cholestasis[6]. The regulation of this process involves several nuclear receptors including farnesoid X receptor (FXR), pregnane X receptor (PXR), constitutive androstaner receptor (CAR), and vitamin D receptor[6][4]. The overall function is critical for maintaining cholesterol balance, preventing accumulation of toxic bile acids in hepatocytes, and supporting normal liver function[3][5]. Because "bile acid elimination pathway" describes a metabolic process rather than a discrete molecular target or druggable entity such as an enzyme or transporter protein, it should not be considered a therapeutic target per se. Instead, individual components within this pathway—such as specific transporters (BSEP/ABCB11; MRP2/ABCC2) or enzymes involved in conjugation/sulfation—are valid molecular targets for drug development or clinical intervention[1][2][4].

Other names

Bile acid elimination pathwayBile acid detoxification pathwayBile acid excretion pathway