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Hepatocyte regeneration in chronic hepatitis C and interferon treatment: Analysis of immunohistological identification of proliferating cell nuclear antigen (PCNA)

  • Liver, Pancreas, and Biliary Tract
  • Published:
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Abstract

To evaluate the usefulness of proliferating cell nuclear antigen (PCNA) immunostaining in the assessment of the efficacy of interferon (IFN) therapy in chronic hepatitis C, we investigated the proliferative activity of hepatocytes in 67 patients with chronic hepatitis C, using this immunostaining method. The percentage of PCNA-positive hepatocytes was 2.4% in patients with chronic persistent hepatitis, 2.5% in those with chronic aggressive hepatitis 2A, and 3.9% in those with chronic aggressive hepatitis 2B. The PCNA count increased with the progression of the liver disease. Patients were classified as complete, partial, and non-responders to IFN; the percentage of PCNA-positive hepatocytes before IFN therapy was 1.6% in the complete responders, 3.9% in the partial responders, and 4.9% in the non-responders. There was a significant negative correlation between the percentage of PCNA-positive hepatocytes and the response to IFN treatment. Thirty-two of 53 cases (60.4%) in which the PCNA labeling index (LI) was less than 5.0 were complete responders compared with 13 of 14 cases (92.9%) in which the PCNA LI was higher than 5.0, representing partial responders or non-responders (P<0.001). Most complete responders had a low PCNA LI, irrespective of HCV genotype. Our findings indicate that PCNA immunostaining is a simple and reliable index of cell proliferation in liver regeneration, and may be a useful predictor of the response to IFN treatment in chronic hepatitis C.

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Hamada, M., Kihira, T., Takase, K. et al. Hepatocyte regeneration in chronic hepatitis C and interferon treatment: Analysis of immunohistological identification of proliferating cell nuclear antigen (PCNA). J Gastroenterol 30, 372–378 (1995). https://doi.org/10.1007/BF02347514

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  • DOI: https://doi.org/10.1007/BF02347514

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