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Taurine (/ ˈ t ɔː r iː n /), or 2-aminoethanesulfonic acid, is a non-proteinogenic naturally occurring amino sulfonic acid that is widely distributed in animal tissues. [1] It is a major constituent of bile and can be found in the large intestine, and accounts for up to 0.1% of total human body weight.
Bile acids are steroid acids found predominantly in the bile of mammals and other vertebrates. Diverse bile acids are synthesized in the liver. [1] Bile acids are conjugated with taurine or glycine residues to give anions called bile salts. [2] [3] [4] Primary bile acids are those synthesized by the liver.
These lipid-soluble bile acids are conjugated (reversibly attached) mainly to glycine or taurine molecules to form water soluble primary conjugated bile acids, sometimes called "bile salts". These bile acids travel to the gall bladder during the interdigestive phase for storage and to the descending part of the duodenum via the common bile duct ...
Taurocholic acid, known also as cholaic acid, cholyltaurine, or acidum cholatauricum, is a deliquescent yellowish crystalline bile acid involved in the emulsification of fats. It occurs as a sodium salt in the bile of mammals. It is a conjugate of cholic acid with taurine. In medical use, it is administered as a cholagogue and choleretic. [1]
In humans, primary bile acids are synthesized from cholesterol in the liver to form either cholic acid (CA) or chenodeoxycholic acid [clarification needed] (CDCA). [7] These primary bile acids are then conjugated to the amino acids glycine or taurine and stored in the gallbladder. [7]
Bear bile contains several bile acids including taurochenodeoxycholic acid, ursodeoxycholic acid, and chenodeoxycholic acid. [2] UDCA and its taurine conjugates comprise about 47% of the bile in American black bears and up to 76% in Asiatic bears. [1] [3] Ursodeoxycholic acid and tauroursodeoxycholic acid were first chemically synthesized in ...