Background And Aims: Ursodeoxycholic acid (UDCA) has an established effect on liver bio-chemistries in primary biliary cirrhosis (PBC). Few studies have evaluated long-term laboratory treatment effects and data beyond 6 years are not available. The aim of this study was to assess the long-term evolution of liver bio-chemistries during prolonged treatment with UDCA in biochemically non-advanced PBC.

Patients And Methods: Prospective multicenter cohort study of patients with PBC with pretreatment normal bilirubin and albumin, treated with UDCA 13-15 mg/kg/day. At yearly intervals, follow-up data including serum bilirubin, alkaline phosphatase (ALP), transaminases, albumin and IgM were collected. Data were analyzed with a repeated measurement model.

Results: Two hundred and twenty-five patients were included and followed during a median period of 10.3 years. Following 1-year treatment with UDCA 36-100% of the total biochemical improvement was achieved, the maximum response was observed after 3 years. After initial improvements, bilirubin and AST levels increased and albumin levels significantly decreased after 6-10 years. However, these changes were of limited magnitude. The beneficial effects on ALT and ALP were maintained while IgM continued to decrease.

Conclusion: In non-advanced PBC the biochemical response to UDCA is maintained up to 15 years. The long-term evolution of bilirubin, albumin and ALT differs from that of ALP and AST. The mean IgM level normalised and levels continued to decrease during the period of follow-up.

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http://dx.doi.org/10.1016/j.gcb.2010.07.018DOI Listing

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