Hepatitis B Virus Genotype-Associated Variability in Antiviral Response to Adefovir Dipivoxil Therapy in Chinese Han Population
Autor: | Xiao-Juan Xin, Chung Yang, Jin-Jun Guo, Qing-Ling Li, Hui Deng, Ai-Zhong Zeng, Ai-Long Huang, Ping Lu |
---|---|
Rok vydání: | 2008 |
Předmět: |
Adult
Male Hepatitis B virus Genotype Organophosphonates Antibodies Viral medicine.disease_cause Antiviral Agents General Biochemistry Genetics and Molecular Biology Hepatitis B Chronic Chinese han population Asian People Ethnicity Adefovir medicine Humans Hepatitis B e Antigens Seroconversion Nucleoside analogue business.industry Adenine virus diseases Lamivudine Alanine Transaminase General Medicine Virology digestive system diseases HBeAg DNA Viral Female business medicine.drug |
Zdroj: | The Tohoku Journal of Experimental Medicine. 216:205-211 |
ISSN: | 1349-3329 0040-8727 |
DOI: | 10.1620/tjem.216.205 |
Popis: | It is well known that different genotypes of hepatitis B virus (HBV) have a different sensitivity to interferon-alpha or lamivudine (nucleoside analogue) antiviral therapy. However, for adefovir dipivoxil (ADV, a nucleotide analogue), the antiviral response of the different genotypes remains to be clarified. In order to evaluate the response of HBV genotypes to ADV therapy and to identify factors that might affect initial virological response, we performed a retrospective analysis on patients with chronic hepatitis B (CHB) in Chinese Han population. The study included 183 patients, who had been tested positive for hepatitis B e antigen (HBeAg) and had been treated with ADV (10 mg/day) for 48 weeks. The numbers of patients infected with HBV genotype B and genotype C were 98 and 75 cases, respectively, and the remaining 10 patients were mixture infection of genotypes B plus C or genotypes B plus D. The mean HBV-DNA reduction and HBV-DNA seroclearance of genotypes B and C at 48 weeks were 3.6 log(10) and 3.1 log(10) copies/ml (p0.05) and 41.8% and 34.6% (p0.05), respectively. There were no statistically significant differences between genotypes B and C in terms of HBeAg loss, anti-HBe seroconversion and normalization of serum alanine aminotransferase (ALT). Multivariate analysis showed that young age, low pretreatment HBV-DNA and/or elevated ALT level might be independent predictive factors associated with initial virological response. Thus, in Han CHB patients who are HBeAg-positive, HBV genotype B shows a better virological response to ADV therapy than does genotype C. |
Databáze: | OpenAIRE |
Externí odkaz: |