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Effect of chronic ursocholic acid administration on bile lipid composition and bile acid pool size in gallstone patients. 1990

A Lanzini, and G Pigozzi, and D Facchinetti, and L Bettini, and M Castellano, and M Beschi, and A Rossi, and G Muiesan
Dept. of Clinical Medicine, University of Brescia, Italy.

We assessed the effect of chronic (4-6 weeks) administration of ursocholic acid (UCA) (15 mg/kg/day), a natural bile acid with poor detergent capacity, on biliary lipid composition of gallbladder bile (n = 26) and bile acid pool size (n = 5) in gallstone patients. During treatment the biliary molar percentage UCA increased from trace values to 28% (p less than 0.001). This effect was accompanied by an increase in molar percentage deoxycholic acid from 16% to 33% (p less than 0.001). Total bile acid pool size remained unchanged during UCA administration; cholic acid and chenodeoxycholic acid pool sizes decreased from 1.0 to 0.6 mmol (p less than 0.05) and from 1.6 to 0.9 mmol (p less than 0.05), respectively. The molar percentage cholesterol of gallbladder bile decreased from 9.8% to 7.0% (p less than 0.001) during UCA, but bile remained supersaturated with cholesterol in 21 patients. The weak effect on biliary lipid composition and the increase of potentially toxic deoxycholic acid in bile suggest that UCA is unlikely to replace ursodeoxycholic and chenodeoxycholic acid for medical treatment of gallstones.

UI MeSH Term Description Entries
D008055 Lipids A generic term for fats and lipoids, the alcohol-ether-soluble constituents of protoplasm, which are insoluble in water. They comprise the fats, fatty oils, essential oils, waxes, phospholipids, glycolipids, sulfolipids, aminolipids, chromolipids (lipochromes), and fatty acids. (Grant & Hackh's Chemical Dictionary, 5th ed) Lipid
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002769 Cholelithiasis Presence or formation of GALLSTONES in the BILIARY TRACT, usually in the gallbladder (CHOLECYSTOLITHIASIS) or the common bile duct (CHOLEDOCHOLITHIASIS). Gallstone Disease,Cholelithiases,Gallstone Diseases
D002793 Cholic Acids The 3 alpha,7 alpha,12 alpha-trihydroxy-5 beta-cholanic acid family of bile acids in man, usually conjugated with glycine or taurine. They act as detergents to solubilize fats for intestinal absorption, are reabsorbed by the small intestine, and are used as cholagogues and choleretics. Cholalic Acids,Acids, Cholalic,Acids, Cholic
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D001647 Bile Acids and Salts Steroid acids and salts. The primary bile acids are derived from cholesterol in the liver and usually conjugated with glycine or taurine. The secondary bile acids are further modified by bacteria in the intestine. They play an important role in the digestion and absorption of fat. They have also been used pharmacologically, especially in the treatment of gallstones. Bile Acid,Bile Salt,Bile Salts,Bile Acids,Acid, Bile,Acids, Bile,Salt, Bile,Salts, Bile

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