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The bile acid sequestrants are a group of resins used to bind certain components of bile in the gastrointestinal tract. They disrupt the enterohepatic circulation of bile acids by combining with bile constituents and preventing their reabsorption from the gut.
The simplest 24-carbon bile acid has two hydroxyl groups at positions 3α and 7α. This is 3α,7α-dihydroxy-5β-cholan-24-oic acid, or, as more usually known, chenodeoxycholic acid. This bile acid was first isolated from the domestic goose, from which the "cheno" portion of the name was derived (Greek: χήν = goose). The 5β in the name ...
Bile acid sequestrants (resins, e.g. cholestyramine) are particularly effective for lowering LDL-C by sequestering the cholesterol-containing bile acids released into the intestine and preventing their reabsorption from the intestine. It decreases LDL by 15–30% and raises HDL by 3–5%, with little effect on triglycerides, but can cause a ...
Colestyramine or cholestyramine (trade names Questran, Questran Light, Cholybar, Olestyr) is a bile acid sequestrant, which binds bile in the gastrointestinal tract to prevent its reabsorption. It is a strong ion exchange resin , which means it can exchange its chloride anions with anionic bile acids in the gastrointestinal tract and bind them ...
Colesevelam is part of a class of drugs known as bile acid sequestrants. Colesevelam hydrochloride, the active pharmaceutical ingredient in Welchol, is a non-absorbed, lipid-lowering polymer that binds bile acids in the intestine, impeding their reabsorption. As the bile acid pool becomes depleted, the hepatic enzyme, cholesterol 7-α ...
Bile acid sequestrants are the main agents used to treat bile acid malabsorption. [25] Cholestyramine and colestipol , both in powder form, have been used for many years. Unfortunately, many patients find them difficult to tolerate; although the diarrhea may improve, other symptoms such as abdominal pain and bloating may worsen.
Managing cholesterol at the site of absorption is an increasingly popular strategy in the treatment of hypercholesterolemia [citation needed].Cholesterol absorption inhibitors are known to have a synergistic effect when combined a class of antihyperlipidemics called statins, to achieve an overall serum cholesterol target.
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