Abstract:
BACKGROUND:Lamivudine is widely used in patients with chronic hepatitis B virus (HBV) infection. In cirrhotic patients, long-term lamivudine therapy significantly reduced the risk of hepatocellular carcinoma (HCC). However, in a small but substantial portion of patients, HCC still developed despite lamivudine therapy. Prolonged usage of lamivudine led to mutations in the polymerase gene, where concurrent nonsense mutations in the HBV S gene occasionally occurred. The significance of such mutations in hepatocarcinogenesis remains elusive. Here, we aimed to understand the oncogenicity of HBV pre-S/S nonsense mutations identified in patients with HCC that developed after lamivudine therapy. METHODS:Of 141 consecutive hepatitis B surface antigen-positive HCC patients, 8 developed HCC after receiving lamivudine therapy. The HBV pre-S/S sequences in their serum and tissue samples were analysed. A sex- and age-matched group of HCC patients who never received lamivudine therapy were included as controls. Site-directed mutagenesis experiments were performed to generate identified pre-S/S nonsense mutations in expression vectors for tumourigenicity analysis. RESULTS:Seven of eight patients in the lamivudine-treated group harboured nonsense mutations in the S gene compared with none in the control group (P<0.001). Site-directed mutagenesis and transient transfection experiments revealed that these mutants could transactivate oncogene promoters. NIH3T3 cells stably expressing sL21*, sW156* and sW172* pre-S/S mutants had increased tumourigenicity in nude mice. CONCLUSIONS:HCCs developed in lamivudine-treated patients who frequently carried nonsense mutations in the S gene. Such pre-S/S mutants are potentially oncogenic and might counteract the effect of lamivudine in preventing hepatocarcinogenesis.
journal_name
Antivir Therjournal_title
Antiviral therapyauthors
Lai MW,Huang SF,Hsu CW,Chang MH,Liaw YF,Yeh CTsubject
Has Abstractpub_date
2009-01-01 00:00:00pages
249-61issue
2eissn
1359-6535issn
2040-2058journal_volume
14pub_type
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2004-04-01 00:00:00
abstract:BACKGROUND:Nucleoside reverse transcriptase inhibitor (NRTI)-associated mutations (NAMs) can affect response to treatment with NRTIs and might also result in HIV-1 with reduced replication capacity. METHODS:A large commercial HIV-1 database (n=60,487) was analysed for the prevalence of NAMs, antiviral drug susceptibil...
journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2008-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章,评审
doi:10.3851/IMP2425
更新日期:2012-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
abstract:BACKGROUND:Neuraminidase (NA) inhibitors (NAIs), including oseltamivir and zanamivir, play an important therapeutic role against influenza infections in immunocompromised patients. In such settings, however, NAI therapy may lead to the emergence of resistance involving mutations within the influenza surface genes. The ...
journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP3344
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:There is a paucity of data on the long-term efficacy of combination lamivudine and adefovir therapy in patients with lamivudine-resistant chronic hepatitis B. METHODS:We determined the cumulative virological, serological and biochemical outcomes of 165 lamivudine-resistant chronic hepatitis B patients on la...
journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP2335
更新日期:2012-01-01 00:00:00
abstract:BACKGROUND:We aimed to investigate the extent of pharmacokinetic drug interactions between bosentan and a fixed combination of lopinavir/ritonavir. METHODS:This was a three-way crossover study in 12 healthy male participants treated with bosentan (125 mg twice daily) and lopinavir/ritonavir (400/100 mg twice daily) al...
journal_title:Antiviral therapy
pub_type: 杂志文章,随机对照试验
doi:10.3851/IMP1506
更新日期:2010-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP1792
更新日期:2011-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP3197
更新日期:2018-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 临床试验,杂志文章,多中心研究
doi:
更新日期:2006-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章,评审
doi:10.3851/IMP2766
更新日期:2014-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP3342
更新日期:2019-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 临床试验,杂志文章,多中心研究
doi:10.3851/IMP3205
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:Quantification of HBsAg in serum may be of clinical importance in predicting HBsAg seroconversion and complete response to treatment. METHODS:Serum HBsAg was quantified by ADVIA Centaur in 63 patients with HBeAg-negative chronic hepatitis B (CHBe-). A total of 42 had received interferon-alpha2b (IFN-alpha2b...
journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2007-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP3362
更新日期:2020-06-04 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2009-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP3148
更新日期:2017-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章,多中心研究,随机对照试验
doi:
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVE:To assess the baseline factors associated with haematological toxicity that lead to ribavirin or pegylated interferon (peginterferon) dosage reductions in hepatitis C and human immunodeficiency virus (HCV/HIV)-coinfected patients. DESIGN:Multicentre, prospective, observational study. SETTING:Eleven hospital...
journal_title:Antiviral therapy
pub_type: 临床试验,杂志文章,多中心研究
doi:
更新日期:2005-01-01 00:00:00
abstract::A novel severe acute respiratory syndrome (SARS)-associated coronavirus (SARS-CoV) has been identified as the aetiological agent of SARS. We previously isolated and characterized SARS-CoV and SARS-CoV-like viruses from human and animals, respectively, suggesting that SARS could be transmitted from wild/farmed animals ...
journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
abstract::Drug-drug interactions in HIV therapy have been known to the clinic from earliest days of HIV treatment. Hundreds of well-designed pharmacokinetic studies have been performed in either HIV-infected patients or, mostly, in healthy volunteers. Case reports generally are graded lower in terms of evidence-based medicine b...
journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP2688
更新日期:2013-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP1509
更新日期:2010-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2006-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2003-02-01 00:00:00
abstract::HIV-HBV-coinfected patients require optimal control of viral replication in order to prevent the development of severe comorbidities, such as liver cirrhosis and hepatocellular carcinoma. The genetic diversity of HBV is a poorly investigated factor of such viral replication in HIV-infected hosts. HBV genome diversity ...
journal_title:Antiviral therapy
pub_type: 杂志文章,评审
doi:10.3851/IMP1495
更新日期:2010-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2000-12-01 00:00:00
abstract:BACKGROUND:Succinylated human serum albumin (Suc-HAS) is a negatively charged neo-glycoprotein that binds to the positively charged V3-loop of HIV-1 gp120, acting as HIV-1-fusion inhibitor in vitro (IC50: 0.5-5.0 microg/ml). Suc-HSA was safe in rats and monkeys, and showed antiretroviral effect in a human-to-mouse mode...
journal_title:Antiviral therapy
pub_type: 杂志文章,随机对照试验
doi:
更新日期:2007-01-01 00:00:00
abstract:BACKGROUND:Despite successful suppression of HIV-1 with HAART, some patients do not have robust immunological recovery. Chronic inflammation from persistent immune activation could contribute to this poor response, resulting in HIV-1 disease progression and the development of some non-HIV-1 comorbidities. METHODS:We c...
journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP2350
更新日期:2012-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:10.3851/IMP2085
更新日期:2012-01-01 00:00:00
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journal_title:Antiviral therapy
pub_type: 杂志文章
doi:
更新日期:2004-10-01 00:00:00