Soluble fiber-mediated bile binding

"Soluble fiber-mediated bile binding" is not a specific molecule or receptor but rather describes a physiological process in which certain types of soluble dietary fibers—such as pectin, β-glucan, guar gum, and psyllium—bind to bile acids or salts within the gastrointestinal tract. This physical interaction prevents the reabsorption of these bile acids in the distal ileum and increases their excretion via feces. As a result, more cholesterol from the liver is used to synthesize new bile acids to maintain homeostasis. This mechanism underlies part of the cholesterol-lowering effect observed with increased intake of soluble dietary fibers and contributes indirectly to reduced cardiovascular risk[1][4][5][6]. This process is not considered a therapeutic "target" in the conventional sense (e.g., receptor/enzyme/transporter), nor does it have an established canonical name or abbreviation. Instead, it refers broadly to how certain food components modulate lipid metabolism through non-specific physicochemical interactions rather than molecular recognition events typical for drug targets. In summary: > "Soluble fiber-mediated bile binding" refers to how some soluble dietary fibers physically bind intestinal bile acids/salts during digestion. This reduces their reabsorption and increases fecal loss of both bound cholesterol and its derivatives—ultimately lowering serum LDL cholesterol levels by increasing hepatic conversion of cholesterol into new bile acids[1][4][5]. It is not itself a molecular target but describes an important nutritional mechanism. If you need structured information on specific molecules involved (e.g., particular types of soluble fiber or individual bile acid species), please specify further.

Other names

Soluble fiber-bile acid bindingSoluble fiber-mediated bile acid sequestrationDietary fiber-bile salt interaction

Physical binding of bile acids/salts in the intestine by soluble dietary fibers