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Digestion. 1983;27(4):189-95.

Serum concentrations of bile acid glucuronides in hepatobiliary diseases.


Bile acid glucuronides in the serum in various hepatobiliary diseases (36 cases) were quantitated by mass fragmentography and their clinical significance was discussed. Serum was added to defined amounts of deuterium-labeled bile acids and their glucuronide and sulfate derivatives, and the bile acids were separated into unconjugated, glucuronidated and sulfated groups after enzymatic cleavage of amide bonds. The liberated bile acids were quantitated by mass fragmentography. Bile acid glucuronides comprised about 7-8% of the total bile acids in the serum of various patients. Chenodeoxycholic acid was the major glucuronidated bile acid while cholic acid was mostly unconjugated. Lithocholic acid was almost all either sulfated or glucuronidated. In patients with obstructive jaundice, glucuronidated bile acids also comprised about 5%, although their absolute amounts were increased. In patients with liver cirrhosis, bile acid glucuronides were decreased, especially in decompensated cases, possibly as a result of hepatocellular dysfunction.

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