Abstract:
:This study investigated the molecular and pharmacokinetic mechanisms of the enhanced antiviral efficacy associated with pegylated interferon (PEG-IFN) alpha-2b and ribavirin. The study involved comparing the expression of serial double-stranded RNA-activated protein kinase (PKR) before and during treatment in 26 PEG-IFN alpha-2b and 26 conventional IFN alpha-2b recipients matched for age, body weight and dose of ribavirin. The pharmacokinetics of PEG-IFN alpha-2b and ribavirin was analysed in 15 of the 26 PEG-IFN recipients. There was a rapid increase in PKR expression in both treatment groups, although expression from day 2 onwards was maintained at a significantly higher level in the PEG-IFN recipients (P < 0.05). C(max) of PEG-IFN occurred 12-48 h after the initial administration, with t(1/2) and C(min) being 49 h and 190 pg/mL, respectively. In contrast to ribavirin, accumulation of PEG-IFN was minimal. There was no association between serum PEG-IFN and ribavirin levels and virological response. Although baseline expression of PKR before treatment was marginally higher in nonresponders (NRs), from day 2 onwards, sequential PKR expression in response to PEG-IFN was higher in sustained viral responders compared with the NRs (P < 0.05). Significant correlations were found between kinetics of PKR expression and viral decline rates in each phase of hepatitis C virus dynamics (first phase, r = 0.67, P = 0.0006; second phase, r = 0.67, P = 0.001). In conclusion, improvement in pharmacokinetics following pegylation led to higher intracellular PKR expression, which was associated with enhanced virological efficacy of PEG-IFN-based combination therapy. The concentrations of both ribavirin and PEG-IFN alpha-2b were not associated with viral response and PKR expression.
journal_name
J Viral Hepatjournal_title
Journal of viral hepatitisauthors
Asahina Y,Izumi N,Umeda N,Hosokawa T,Ueda K,Doi F,Tsuchiya K,Nakanishi H,Matsunaga K,Kitamura T,Kurosaki M,Uchihara M,Higaki M,Miyake Sdoi
10.1111/j.1365-2893.2006.00803.xsubject
Has Abstractpub_date
2007-06-01 00:00:00pages
396-403issue
6eissn
1352-0504issn
1365-2893pii
JVH803journal_volume
14pub_type
临床试验,杂志文章,随机对照试验abstract::Hepatitis delta virus (HDV) infection is a usually severe type of viral hepatitis associated with increased mortality and rapid evolution to cirrhosis. Currently, treatment is limited to extended interferon administration and measurement of HDV RNA blood levels is essential to judge the response. The aim of this study...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/jvh.12000
更新日期:2013-04-01 00:00:00
abstract::Several direct-acting antivirals (DAAs) have been approved for the treatment of chronic hepatitis C virus (HCV) infections, opening the door to highly effective interferon-free treatment regimens. Resistance-associated substitutions (RASs) have been reported both in treatment-naïve patients and following treatment wit...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/jvh.12615
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abstract::To assess the prevalence of hepatitis delta virus (H delta V) in northern India, 204 adult patients with acute and chronic liver disease who were positive for hepatitis B virus (HBV) markers were screened for anti-H delta V antibody by enzyme-linked immunosorbent assay (ELISA). Anti-H delta V antibodies were positive ...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/j.1365-2893.1995.tb00021.x
更新日期:1995-01-01 00:00:00
abstract::Women with chronic hepatitis B should maintain nucleotide analogue treatment to prevent disease progression during pregnancy. The aim of this study was to prospectively evaluate the efficacy and safety of telbivudine used throughout pregnancy for preventing hepatitis B virus (HBV) mother-to-child transmission (MTCT). ...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/jvh.12788
更新日期:2017-11-01 00:00:00
abstract::A randomized trial was conducted to assess the efficacy of interferon-alpha (IFN) daily in combination with ribavirin in 301 naïve patients with chronic hepatitis C (CHC). Patients were randomized to receive ribavirin 1.2 g daily (QD) for 48 weeks with either IFN 5 MU (thrice weekly) TIW for 8 weeks followed by IFN 3 ...
journal_title:Journal of viral hepatitis
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2003-09-01 00:00:00
abstract:BACKGROUND AND AIMS:New therapies for HCV are rapidly emerging and providers are advising select patients to defer treatment and elect 'watchful waiting'. During the watchful waiting period, patients have been shown to have high rates of illness uncertainty and depression. We sought to answer the question of whether re...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/jvh.12207
更新日期:2014-10-01 00:00:00
abstract::Liver damage may result from multiple factors in HIV-infected patients. The availability of reliable noninvasive tools to measure liver fibrosis has permitted the screening of large patient populations. Cross-sectional study of all consecutive HIV outpatients who underwent examination by transient elastometry (FibroSc...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/j.1365-2893.2009.01261.x
更新日期:2011-01-01 00:00:00
abstract::We examined serial changes in the hypervariable region 1(HVR1) quasispecies both in immune and nonimmune complexed hepatitis C virus (HCV) particles from 12 patients with chronic hepatitis C to elucidate the mechanism by which genetic diversification of HCV during the course of infection allows escape of virus from th...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
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更新日期:2001-09-01 00:00:00
abstract::Hepatitis delta virus (HDV) is a serious cause of liver-related morbidity and mortality. Coexistent infection with HDV tends to aggravate the course of hepatitis B virus (HBV)-associated liver disease. The aim of this study was to determine the prevalence of HDV infection among patients chronically infected with HBV i...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
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更新日期:2011-07-01 00:00:00
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/j.1365-2893.2011.01516.x
更新日期:2012-02-01 00:00:00
abstract::The age-specific prevalence of antibody to hepatitis A virus (anti-HAV) was determined in 949 Chinese people residing in South Africa in 1983-1985. This small community is comprised of original settlers from the mainland China province of Guandong, where hepatitis A virus infection is endemic, and their South African-...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/j.1365-2893.1994.tb00114.x
更新日期:1994-01-01 00:00:00
abstract::Better understanding of hepatitis B virus (HBV) replication, natural history and the immunopathogenesis of chronic hepatitis B, together with the introduction of effective agents with different mechanisms of action are the basis for better therapeutic strategies against chronic hepatitis B. Among currently available d...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章,评审
doi:10.1046/j.1365-2893.2002.00388.x
更新日期:2002-11-01 00:00:00
abstract::Chronic hepatitis B (CHB) is characterized by an impaired immune response to hepatitis B virus. Among the nucleos(t)ides used in CHB treatment, telbivudine is associated with the highest rates of hepatitis B e antigen (HBeAg) seroconversion rates, which are similar to those observed with pegylated interferon (PegIFN)....
journal_title:Journal of viral hepatitis
pub_type: 杂志文章,评审
doi:10.1111/jvh.12059
更新日期:2013-04-01 00:00:00
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/j.1365-2893.2012.01588.x
更新日期:2012-09-01 00:00:00
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1046/j.1365-2893.1997.00073.x
更新日期:1997-01-01 00:00:00
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
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更新日期:2012-07-01 00:00:00
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章,评审
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更新日期:2006-01-01 00:00:00
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
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更新日期:2020-09-01 00:00:00
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
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更新日期:2013-03-01 00:00:00
abstract::Chronic hepatitis B infection is an important cause of liver-related mortality in China. This study assessed the efficacy and safety of entecavir in a heterogeneous patient population from a ‘real-world’ clinical practice setting in China. This prospective, observational cohort provides 48-week data on 2600 patients f...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
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更新日期:2013-11-01 00:00:00
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1046/j.1365-2893.1998.00098.x
更新日期:1998-05-01 00:00:00
abstract::Phytochemicals exert antiviral activity and may play a potential therapeutic role in hepatitis C virus (HCV) infection. In this work, we aimed to isolate NS3 inhibitors from traditional Indian medicinal plants that were found, in our earlier study, to inhibit HCV NS3 protease activity and to evaluate their potential t...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/j.1365-2893.2011.01507.x
更新日期:2012-02-01 00:00:00
abstract::Response to interferon-alpha (IFN-alpha) treatment in hepatitis C is poorer when cirrhosis is present. In the third Australian multicentre hepatitis C trial, Aushep-3, we examined the efficacy and tolerability of an intensive 24-week course of interferon-alpha 2a in Child-Pugh grade A patients with chronic hepatitis C...
journal_title:Journal of viral hepatitis
pub_type: 临床试验,杂志文章,多中心研究
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更新日期:1997-09-01 00:00:00
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journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1046/j.1365-2893.2002.00354.x
更新日期:2002-05-01 00:00:00
abstract::To determine if chemiluminescence can be used in an enzyme immunoassay (EIA) format to test for hepatitis C virus (HCV) antibody and to compare sensitivity and specificity of chemiluminescence to a licensed anti-HCV EIA method, random volunteer donor samples were evaluated. One thousand and seventy-four random volunte...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/j.1365-2893.1995.tb00032.x
更新日期:1995-01-01 00:00:00
abstract::The focus of this study was to evaluate the safety and efficacy of sequential peginterferon α-2a (Pegasys) therapy for chronic hepatitis B with acute exacerbation [ALT > 10 × upper limit of normal (ULN), bilirubin <2.0 mg/dL]. Four groups of patients categorized by HBeAg status and treatment regimens were studied sinc...
journal_title:Journal of viral hepatitis
pub_type: 临床试验,杂志文章
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更新日期:2012-03-01 00:00:00
abstract::Italy is one of the countries on track with the WHO's agenda to eliminate hepatitis C virus (HCV) by 2030. Healthcare facilities play a crucial role in seeking patients who are infected but have not yet been treated. We assessed the effectiveness of a recall strategy, named 'Telepass' project, for patients exposed to ...
journal_title:Journal of viral hepatitis
pub_type: 杂志文章
doi:10.1111/jvh.13465
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