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  • Title: Liver bilirubin UDP-glucuronosyltransferase activity in chronic nonhemolytic unconjugated hyperbilirubinemia of adults.
    Author: Watanabe A, Wakabayashi H, Kuwabara Y, Yamamoto H, Hattori S, Tsuji T.
    Journal: Res Exp Med (Berl); 1998 Apr; 197(6):329-36. PubMed ID: 9638795.
    Abstract:
    Ten adult patients with chronic nonhemolytic unconjugated (indirect) hyperbilirubinemia were analyzed by determining bilirubin uridine diphosphate-glucuronosyltransferase activity according to a more physiological and sensitive method (9 control cases, 0.457 +/- 0.163 nmole/mg protein/min). There was no overlap of the enzyme activities of 2 cases with Crigler-Najjar syndrome (type II) (0.006 nmole/mg protein/min on average) and 6 cases with Gilbert's syndrome (0.051 +/- 0.016 nmole/mg protein/min). The enzyme activities in 2 patients with post-hepatitic hyperbilirubinemia were within the normal range. A new classification of nonhemolytic unconjugated hyperbilirubinemia in adults is proposed according to the results of this enzyme activity and the recent data on the gene mutation of this enzyme.
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