title: Determination of 3 beta-hydroxy-5-cholenoic acid in serum of hepatobiliary diseases--its glucuronidated and sulfated conjugates.
abstract: 3 beta-Hydroxy-5-cholenoic acid in the serum of control subjects and 62 patients with various hepatobiliary diseases was quantitated by mass fragmentography after separation into nonglucuronidated-nonsulfated, glucuronidated, and sulfated fractions. Deuterium-labeled deoxycholic acid and its glucuronide and sulfate were used as internal standards. Mean concentrations of total 3 beta-hydroxy-5-cholenoic acid in serum (mumole/liter) were as follows: Control subjects (14), 0.184; obstructive jaundice (15), 6.783; liver cirrhosis, compensated (12), 0.433, and decompensated (12), 1.636; chronic hepatitis (12), 0.241; and acute hepatitis (11), 2.364. Most of the 3 beta-hydroxy-5-cholenoic acid was glucuronidated or sulfated. Only in patients with obstructive jaundice did glucuronidation (60 +/- 14%) exceed sulfation (31 +/- 14%), sulfation exceeding glucuronidation in the others. The UDP-glucuronyltransferase might have different substrate specificities for 3 beta-hydroxy-5-cholenoic acid and other common bile acids, especially in the cholestatic state.
mesh_terms: D000328:Adult; D002779:Cholestasis / Q000097:blood*; D002793:Cholic Acids / Q000097:blood*; D005260:Female; D008401:Gas Chromatography-Mass Spectrometry; D005965:Glucuronates / Q000097:blood*; D006801:Humans; D008107:Liver Diseases / Q000097:blood*; D008297:Male; D013464:Sulfuric Acids / Q000097:blood*
chemical_list: D002793:Cholic Acids; D005965:Glucuronates; D013464:Sulfuric Acids; C026883:3 beta-hydroxychol-3-en-24-oic acid