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  • Title: [Effect of pegylated interferon beta-1a therapy on the liver fibrosis in chronic hepatitis C: a semi-quantitative analysis].
    Author: Rao HY, Li J, Zhang LF, Chen HY, Zhu LM, Wei L, Sun Y, Wang H.
    Journal: Zhonghua Yi Xue Za Zhi; 2008 Jan 08; 88(2):96-100. PubMed ID: 18353212.
    Abstract:
    OBJECTIVE: To access the effect of pegylated interferon (PEGIFN) beta-1a on the reduction of liver fibrosis in chronic hepatitis C (HVC). METHODS: Twenty-one patients with chronic HVC were divided into two groups randomly and treated with recombinant human PEGIHN-beta-1a (n = 13) or PEGIHN-beta-1a plus ribavirin (RBV) (n = 8) for 24 weeks, and then followed up for another 24 weeks. The clinical manifestations were observed and the clinical effects were evaluated. Biopsy was conducted before and after the treatment to analyze the histological activity index (HAI) and staging of fibrosis according the modified Knodell scoring system. Immunohistochemical analysis was used to examine the levels of alpha-smooth muscle actin (alpha-SMA), marker of activation of hepatic stellate cells (HSCs), and collagen type III in the HSCs. RESULTS: Sustained viral response (SVR) was achieved in 7 patients, and end-of-treatment virologic response (ETVR) was achieved in 9 patients. The HAI after treatment was 4.3 +/- 2.2, significantly lower than that before treatment (6.6 +/- 2.2, t = 4.77, P < 0.01). The fibrosis score after treatment was 1.1 +/- 1.1, significantly lower than that before treatment (1.7 +/- 1.2, t = 1.92, P < 0.05). The alpha-SMA score after treatment was 14 +/- 8, significantly lower than that before treatment (20 +/- 11, t = 2.15, P < 0.05). The integrated light density of collagen type III after treatment was 10 +/- 10, significantly lower than that before treatment (16 +/- 12, t = 1.83, P < 0.05). The improvement levels of fibrosis, alpha-SMA score, and integrated light density of collagen type III of the patients with SVR were all better than those of the patients without SVR; however, the differences were all not significant. The patients with combination therapy, female patients, and the patients with the HCV RNA < 2 x 10(6) copies/ml before treatment all showed higher levels in histology response. HAI, alpha-SMA level, and collagen type III values were all significantly correlated with the values of the semiquantitative indexes of fibrosis (all P < 0.01). CONCLUSION: Resisting hepatitis virus C and inhibiting and reversing the fibrotic progress, IFN-beta-1a therapy improves the liver histology of chronic HVC regardless of the viral response.
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