Abstract:
AIM:To retrospectively evaluate the vaccination-induced anti-HBs seroconversion rates in treatment-naive and treatment-experienced chronic hepatitis C (CHC) patients. Also to prospectively evaluate the seroconversion rates in CHC patients during pegylated interferon (PEG) plus ribavirin (RIB) treatment. METHODS:Seventy treatment-naive CHC patients (group A), 22 sustained virological responders-SVR following interferon (IFN) plus RIB treatment CHC patients (group B) and 121 healthy subjects (group C) had been participated in the same HBV vaccination schedule (20 microg, 0-1-6 mo). Seroconversion was considered if anti-HBs levels were above 10 mIU/mL within 3 mo following the third dose of the vaccine. Moreover, we prospectively selected 30 non-cirrhotic CHC patients and evaluated them for the efficacy of the same vaccine schedule randomizing them in two groups: Group-1, 15 CHC patients received the first dose of the vaccine in parallel with the initiation of PEG plus RIB treatment and Group-2, 15 patients received the same vaccination schedule without concomitant treatment. Determination of anti-HBs was performed at mo 1, 2, and 7. Statistical analysis of data was based on ANOVA student's t-test and chi-square analysis (P < 0.05). RESULTS:Fifty-eight of 70 group A patients (82.85%), 20/22 group B (90.9%) and 112/121 healthy subjects (92.56%) had been seroconverted. The seroconversion rates were significantly higher in the control group than in treatment-naive CHC patients (P = 0.04). The corresponding rates were comparable between group A and group B CHC patients (P = 0.38). The vast majority of non-responders (10/14, 71.43%) had been infected by genotype-1 of HCV. The seroconversion rates were comparable between group 1 and 2 CHC patients at mo 1 (20% versus 26.7%, P = 0.67), mo 2 (46.7% vs 60%, P = 0.46) and mo 7 (86.7% versus 93.3%, P = 0.54) of follow-up. CONCLUSION:The immunogenicity of HBV vaccine seems to be lower in CHC patients compared to healthy subjects. SVR following IFN plus RIB treatment does not affect the antibody response to HBV vaccine. Infection by genotype-1 seems to negatively influence the seroconversion rates. Vaccination against HBV during PEG plus RIB combination treatment is not beneficial in terms of anti-HBs seroconversion rates.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Elefsiniotis IS,Vezali E,Kamposioras K,Pantazis KD,Tontorova R,Ketikoglou I,Moulakakis A,Saroglou Gdoi
10.3748/wjg.v12.i27.4420subject
Has Abstractpub_date
2006-07-21 00:00:00pages
4420-4issue
27eissn
1007-9327issn
2219-2840journal_volume
12pub_type
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