Bile acid elimination (None)

"Bile acid elimination" refers broadly to the physiological processes by which excess or potentially toxic endogenous bile acids are rendered more water-soluble—primarily via conjugation with glycine/taurine and further modification such as sulfation—and then transported out of hepatocytes into the biliary system for eventual fecal excretion. This multi-step pathway involves several key proteins including hepatic enzymes like cholesterol 7α-hydroxylase for synthesis; sulfotransferases like SULT2A1 for detoxification; ATP-binding cassette transporters such as ABCB11/BSEP for canalicular secretion; and regulatory nuclear receptors including FXR that coordinate gene expression relevant to these steps. Disruption at any point can result in accumulation of toxic intermediates leading to liver injury or systemic disease states such as cholestasis. Pharmacologic agents may enhance this process by binding intestinal bile acids ("sequestrants") or modulating relevant enzymatic/nuclear receptor activity.[1][2][3][4][5]

Other names

Bile acid excretionBile acid detoxificationBile salt elimination

For drugs affecting this pathway: - Binding/sequestration of intestinal bile acids prevents their reabsorption. - Induction or inhibition of enzymes involved in conjugation/sulfation. - Modulation of nuclear receptors regulating expression of transporters/enzymes involved in bile acid metabolism/elimination[4][5].