Deoxycholic acid

Deoxycholic acid is a bile acid. Deoxycholic acid is one of the secondary bile acids, which are metabolic byproducts of intestinal bacteria. The two primary bile acids secreted by the liver are cholic acid and chenodeoxycholic acid. Bacteria metabolize chenodeoxycholic acid into the secondary bile acid lithocholic acid, and they metabolize cholic acid into deoxycholic acid. There are additional secondary bile acids, such as ursodeoxycholic acid. Deoxycholic acid is soluble in alcohol and acetic acid. When pure, it exists in a white to off-white crystalline powder form. Deoxycholic acid is available as a generic medication in the United States as of April 2021, sold under the brand name Kybella among others. Deoxycholic acid has been used since its discovery in various fields of human medicine. In the human body deoxycholic acid is used in the emulsification of fats for absorption in the intestine. It has, in some countries (including Switzerland) been licensed as an emulsifier in food industry, but it is no longer common. Outside the body it is used in experimental basis of cholagogues and is also in use to prevent and dissolve gallstones. In research deoxycholic acid is used as a mild detergent for the isolation of membrane associated proteins. The critical micelle concentration for deoxycholic acid is approximately 2.4–4 mM. Sodium deoxycholate, the sodium salt of deoxycholic acid, is often used as a biological detergent to lyse cells and solubilise cellular and membrane components. Sodium deoxycholate mixed with phosphatidylcholine, is used in mesotherapy injections to produce lipolysis, and has been used as an alternative to surgical excision in the treatment of lipomas. Deoxycholates and bile acid derivatives in general are actively being studied as structures for incorporation in nanotechnology. They also have found application in microlithography as photoresistant components. In the United States, deoxycholic acid, under the brand name Kybella, is approved by the Food and Drug Administration for reducing moderate-to-severe fat below the chin.

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Bile acid

Bile acids are steroid acids found predominantly in the bile of mammals and other vertebrates. Diverse bile acids are synthesized in the liver. Bile acids are conjugated with taurine or glycine residues to give anions called bile salts. Primary bile acids are those synthesized by the liver. Secondary bile acids result from bacterial actions in the colon. In humans, taurocholic acid and glycocholic acid (derivatives of cholic acid) and taurochenodeoxycholic acid and glycochenodeoxycholic acid (derivatives of chenodeoxycholic acid) are the major bile salts.

Deoxycholic acid

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