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Quantitative testing of liver function compared to prognostic scores in patients with primary biliary cirrhosis
Christoph Herold1, Marion Ganslmayer, Christine Deynet
1Department of Internal Medicine I, University of Erlangen-Nuernberg, Germany.
Aim:
Primary biliary cirrhosis (PBC) is a slowly progressive liver disease which can lead to cirrhosis. We investigated if quantitative tests of liver function (QTLF) and serum levels of a surrogate marker of hepatic fibrogenesis (PIIINP) provide information in addition to established prognostic scores.
Methods:
In 34 PBC patients PIIINP, PBC-relevant parameters, histological staging and QTLF at entry and at 2 years were determined and compared with the Christensen (CPS I, CPS II) and Mayo prognosis score. QTLF included aminopyrine breath test, galactose elimination capacity, sorbitol and indocyanine green clearance.
Results:
Bilirubin, serum IgM and PIIINP were elevated at both time points, whereas albumin and prothrombin time remained normal. Clinical findings (ascites, cirrhosis, central cholestasis) and histological staging worsened after 2 years, as did the CPS II. However, QTLF, PIIINP, CPS I and the Mayo score revealed no significant changes.
Conclusions:
Only CPS II changed after 2 years, whereas CPS I and the Mayo score remained unaltered. QTLF and PIIINP did not provide any further information on progression of PBC, suggesting that QTLF cannot predict prognosis of PBC patients in a two-year interval and that CPS II is superior to CPS I and the Mayo score in short-term studies for PBC.