Characterization of hepatitis C Virus genotype 3a hypervariable region 1 in patients achieved rapid virological response to alpha interferon and ribavirin combination therapy.

Abstract:

BACKGROUND:Hepatitis C virus roots a chronic liver disease. Currently approved treatment strategy includes administration of alpha interferon and ribavirin combined therapy for 24-48 weeks. One of the predictor of sustained virological response is an early virological response to treatment characterized as rapid response. Hyper variable region 1 (HVR1) of E2 protein is responsible for viral entry and acts as a target for neutralizing antibodies. Any mutation in this region would effect virus interaction with target cell and viral persistence. METHODS:Thirty one clones of six pre-treatment samples subjected to combination therapy were investigated. Three of the patients were rapid responders (R1, R2 and R3) and two were breakthrough responders (BT1 and BT2). Envelope 2 gene was amplified, cloned and sequenced. Amino acid substitution, frequency, composition and antigenic properties of HVR 1 of E2 protein were studied. RESULTS:In both rapid responders (R.R) (14 amino acid sites) and breakthrough responders (BT.R) (13 amino acid sites) half of the amino acid sites were either conserved or resistant to any physiochemical change due to amino acid substitution. It also indicated that average composition of hydrophilic and basic amino acids were comparatively lower in rapid responders than other samples affecting probable interaction of virus with target cells. A central non antigenic region was constant among the breakthrough responders but differed in length significantly among rapid responders reflecting the adaptive nature of HVR1 to the immune response. CONCLUSIONS:We observed that although HVR1is quite variable region in HCV 3a patients responding differently to treatment it still maintains its physiochemical properties for its proper functioning and viability.

journal_name

Virol J

journal_title

Virology journal

authors

Akram M,Idrees M,Hussain A,Afzal S,Ilyas M,Zafar S,Aftab M,Badar S,Khubaib B

doi

10.1186/1743-422X-8-253

subject

Has Abstract

pub_date

2011-05-23 00:00:00

pages

253

issn

1743-422X

pii

1743-422X-8-253

journal_volume

8

pub_type

杂志文章
  • Cyclooxygenase activity is important for efficient replication of mouse hepatitis virus at an early stage of infection.

    abstract::Cyclooxygenases (COXs) play a significant role in many different viral infections with respect to replication and pathogenesis. Here we investigated the role of COXs in the mouse hepatitis coronavirus (MHV) infection cycle. Blocking COX activity by different inhibitors or by RNA interference affected MHV infection in ...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-4-55

    authors: Raaben M,Einerhand AW,Taminiau LJ,van Houdt M,Bouma J,Raatgeep RH,Büller HA,de Haan CA,Rossen JW

    更新日期:2007-06-07 00:00:00

  • Identification of novel human adenovirus candidates using the coxsackievirus and adenovirus receptor for cell entry.

    abstract:BACKGROUND:There are over 100 known human adenovirus (HAdV) types, which are able to cause a broad variety of different self-limiting but also lethal diseases especially in immunocompromised patients. Only limited information about the pathogenesis and biology of the majority of these virus types is available. In the p...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/s12985-020-01318-w

    authors: Mese K,Bunz O,Schellhorn S,Volkwein W,Jung D,Gao J,Zhang W,Baiker A,Ehrhardt A

    更新日期:2020-04-09 00:00:00

  • Epidemics of enterovirus infection in Chungnam Korea, 2008 and 2009.

    abstract:: Previously, we explored the epidemic pattern and molecular characterization of enteroviruses isolated in Chungnam, Korea from 2005 to 2006. The present study extended these observations to 2008 and 2009. In this study, enteroviruses showed similar seasonal prevalent pattern from summer to fall and age distribution to...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-8-297

    authors: Baek K,Yeo S,Lee B,Park K,Song J,Yu J,Rheem I,Kim J,Hwang S,Choi Y,Cheon D,Park J

    更新日期:2011-06-13 00:00:00

  • Comparative efficacy of experimental inactivated and live-attenuated chimeric porcine circovirus (PCV) 1-2b vaccines derived from PCV1 and PCV2b isolates originated in China.

    abstract:BACKGROUND:Porcine circovirus type-2b (PCV2b) is recognized as the etiological agent of the various clinical manifestations of porcine circovirus-associated disease (PCVAD). Previous studies have demonstrated effectiveness of chimeric PCV1-2 vaccines against PCV2b challenge. In this study, the efficacy of inactivated a...

    journal_title:Virology journal

    pub_type: 杂志文章,随机对照试验

    doi:10.1186/s12985-015-0338-9

    authors: Li J,Yu T,Wang X,Zhou J,Gao R,Zhang F,Gao X,Gao S,Liu X

    更新日期:2015-07-30 00:00:00

  • Characterization of Farmington virus, a novel virus from birds that is distantly related to members of the family Rhabdoviridae.

    abstract:BACKGROUND:Farmington virus (FARV) is a rhabdovirus that was isolated from a wild bird during an outbreak of epizootic eastern equine encephalitis on a pheasant farm in Connecticut, USA. FINDINGS:Analysis of the nearly complete genome sequence of the prototype CT AN 114 strain indicates that it encodes the five canoni...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-10-219

    authors: Palacios G,Forrester NL,Savji N,Travassos da Rosa AP,Guzman H,Detoy K,Popov VL,Walker PJ,Lipkin WI,Vasilakis N,Tesh RB

    更新日期:2013-07-01 00:00:00

  • Kinetics of pulmonary immune cells, antibody responses and their correlations with the viral clearance of influenza A fatal infection in mice.

    abstract::Fatal influenza A virus infection is a major threat to public health throughout the world. Lung macrophages and neutrophils have critical roles for both the pathogenesis and viral clearance of fatal viral infections. These are complicated by the interaction of innate immunity and adaptive immunity against viral infect...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-11-57

    authors: Lv J,Hua Y,Wang D,Liu A,An J,Li A,Wang Y,Wang X,Jia N,Jiang Q

    更新日期:2014-03-26 00:00:00

  • Analysis of adenovirus trans-complementation-mediated gene expression controlled by melanoma-specific TETP promoter in vitro.

    abstract:BACKGROUND:Human adenoviruses (Ads) have substantial potential for clinical applications in cancer patients. Conditionally replicating adenoviruses (CRAds) include oncolytic adenoviruses in which expression of the immediate early viral transactivator protein E1A is controlled by a cancer cell-selective promoter. To enh...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-7-175

    authors: Fontecedro AC,Lutschg V,Eichhoff O,Dummer R,Greber UF,Hemmi S

    更新日期:2010-07-29 00:00:00

  • Comparative genomics of Bacillus thuringiensis phage 0305phi8-36: defining patterns of descent in a novel ancient phage lineage.

    abstract:BACKGROUND:The recently sequenced 218 kb genome of morphologically atypical Bacillus thuringiensis phage 0305phi8-36 exhibited only limited detectable homology to known bacteriophages. The only known relative of this phage is a string of phage-like genes called BtI1 in the chromosome of B. thuringiensis israelensis. Th...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-4-97

    authors: Hardies SC,Thomas JA,Serwer P

    更新日期:2007-10-05 00:00:00

  • Author Correction: In vitro virucidal activity of Echinaforce®, an Echinacea purpurea preparation, against coronaviruses, including common cold coronavirus 229E and SARS-CoV-2.

    abstract::The original version of the acknowledgement unfortunately contained a mistake. ...

    journal_title:Virology journal

    pub_type: 已发布勘误

    doi:10.1186/s12985-020-01439-2

    authors: Signer J,Jonsdottir HR,Albrich WC,Strasser M,Züst R,Ryter S,Ackermann-Gäumann R,Lenz N,Siegrist D,Suter A,Schoop R,Engler OB

    更新日期:2020-11-09 00:00:00

  • Naturally occurring genotype 2b/1a hepatitis C virus in the United States.

    abstract:BACKGROUND:Hepatitis C Virus (HCV) infected patients are frequently repeatedly exposed to the virus, but very few recombinants between two genotypes have been reported. FINDINGS:We describe the discovery of an HCV recombinant using a method developed in a United States clinical lab for HCV genotyping that employs sequ...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-8-458

    authors: Bhattacharya D,Accola MA,Ansari IH,Striker R,Rehrauer WM

    更新日期:2011-10-03 00:00:00

  • Potential effects of telbivudine and entecavir on renal function: a systematic review and meta-analysis.

    abstract:BACKGROUND:To assess the potential effects of telbivudine (LdT) and entecavir (ETV) on renal function in patients with chronic hepatitis B (CHB), we performed a meta-analysis of the relevant data available on these agents to evaluate their effects on the estimated glomerular filtration rate (eGFR) during treatment. ME...

    journal_title:Virology journal

    pub_type: 杂志文章,meta分析,评审

    doi:10.1186/s12985-016-0522-6

    authors: Wu X,Cai S,Li Z,Zheng C,Xue X,Zeng J,Peng J

    更新日期:2016-04-09 00:00:00

  • Local production of CCL3, CCL11, and IFN-γ correlates with disease severity in murine parainfluenza virus infection.

    abstract:BACKGROUND:Using a murine model of parainfluenza virus infection (mPIV1 or Sendai virus; SeV), we compared the inflammatory responses to lethal and sub-lethal infections in inbred DBA/2 mice. METHODS:Mice were intranasally inoculated with either 1.6×10(3) or 1.6×10(5) infectious units (IU) of SeV or diluent control. C...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-10-357

    authors: Suryadevara M,Bonville CA,Rosenberg HF,Domachowske JB

    更新日期:2013-12-21 00:00:00

  • A novel coronavirus capable of lethal human infections: an emerging picture.

    abstract::In September 2012, a novel coronavirus was isolated from a patient in Saudi Arabia who had died of an acute respiratory illness and renal failure. The clinical presentation was reminiscent of the outbreak caused by the SARS-coronavirus (SARS-CoV) exactly ten years ago that resulted in over 8000 cases. Sequence analysi...

    journal_title:Virology journal

    pub_type: 杂志文章,评审

    doi:10.1186/1743-422X-10-66

    authors: Khan G

    更新日期:2013-02-28 00:00:00

  • Bioinformatic analysis suggests that the Cypovirus 1 major core protein cistron harbours an overlapping gene.

    abstract::Members of the genus Cypovirus (family Reoviridae) are common pathogens of insects. These viruses have linear dsRNA genomes divided into 10-11 segments, which have generally been assumed to be monocistronic. Here, bioinformatic evidence is presented for a short overlapping coding sequence (CDS) in the cypovirus genome...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-5-62

    authors: Firth AE,Atkins JF

    更新日期:2008-05-20 00:00:00

  • Development of a sensitive and specific xMAP assay for detection of antibodies against infectious laryngotracheitis and bronchitis viruses.

    abstract:BACKGROUND:A serological method to simultaneously detect antibodies against infectious laryngotracheitis virus (ILTV) and infectious bronchitis virus (IBV) is imperative for the differential diagnosis and evaluation of antibodies titers after vaccination. METHOD:The microspheres coated with purified recombinant glycop...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/s12985-018-1048-x

    authors: Wang H,Cong F,Guan J,Xiao L,Zhu Y,Lian Y,Huang R,Chen M,Guo P

    更新日期:2018-09-21 00:00:00

  • Intracytoplasmic stable expression of IgG1 antibody targeting NS3 helicase inhibits replication of highly efficient hepatitis C Virus 2a clone.

    abstract:BACKGROUND:Hepatitis C virus (HCV) infection is a major public health problem with more than 170 million cases of chronic infections worldwide. There is no protective vaccine currently available for HCV, therefore the development of novel strategy to prevent chronic infection is important. We reported earlier that a re...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-7-118

    authors: Chandra PK,Hazari S,Poat B,Gunduz F,Prabhu R,Liu G,Burioni R,Clementi M,Garry RF,Dash S

    更新日期:2010-06-07 00:00:00

  • Intramuscular immunization of mice with live influenza virus is more immunogenic and offers greater protection than immunization with inactivated virus.

    abstract:BACKGROUND:Influenza virus continues to cause significant hospitalization rates in infants and young children. A 2-dose regime of trivalent inactivated vaccine is required to generate protective levels of hemagglutination inhibiting (HAI) antibodies. A vaccine preparation with enhanced immunogenicity is therefore desir...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-8-251

    authors: Harris K,Ream R,Gao J,Eichelberger MC

    更新日期:2011-05-21 00:00:00

  • Genotyping of 30 kinds of cutaneous human papillomaviruses by a multiplex microfluidic loop-mediated isothermal amplification and visual detection method.

    abstract:BACKGROUND:Human papillomaviruses (HPVs), a group of non-enveloped small viruses with double-stranded circular DNA which lead to multiple skin diseases such as benign warts, are commonly seen in clinics. The current HPV detection systems aim mainly at mucosal HPVs, however, an efficient clinical approach for cutaneous ...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/s12985-020-01373-3

    authors: Wang Y,Ge G,Mao R,Wang Z,Sun YZ,Du YG,Gao XH,Qi RQ,Chen HD

    更新日期:2020-07-09 00:00:00

  • Characterization of neuraminidase inhibitor-resistant influenza virus isolates from immunocompromised patients in the Republic of Korea.

    abstract:BACKGROUND:The emergence of influenza viruses resistant to anti-influenza drugs is a threat to global public health. The Korea Centers for Disease Control and Prevention operates the Korea Influenza and Respiratory Viruses Surveillance System (KINRESS) to monitor epidemics of influenza and Severe Acute Respiratory Infe...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/s12985-020-01375-1

    authors: Kim HM,Lee N,Kim MS,Kang C,Chung YS

    更新日期:2020-07-06 00:00:00

  • Aggregates of bacteriophage 0305phi8-36 seed future growth.

    abstract::Lytic bacteriophage 0305phi8-36 forms visually observed aggregates during plaque formation. Aggregates intrinsically lower propagation potential. In the present study, the following observations indicate that lost propagation potential is regained with time: (1) Aggregates sometimes concentrate at the edge of clear pl...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-4-131

    authors: Serwer P,Hayes SJ,Lieman K

    更新日期:2007-12-04 00:00:00

  • Identification of an effective siRNA target site and functional regulatory elements, within the hepatitis B virus posttranscriptional regulatory element.

    abstract:BACKGROUND:Infection with hepatitis B virus (HBV) is major public health concern. The limitations of available antiviral drugs require development of novel approaches to inhibit HBV replication. This study was conducted to identify functional elements and new siRNA target sites within the highly conserved regions of th...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-7-216

    authors: Panjaworayan N,Payungporn S,Poovorawan Y,Brown CM

    更新日期:2010-09-08 00:00:00

  • Effect of 48-week pegylated interferon α-2a or nucleos(t)ide analogue therapy on renal function in Chinese patients with chronic hepatitis B.

    abstract:BACKGROUND:Controversy remains as to whether antiviral agents contribute to renal dysfunction in patients with chronic hepatitis B virus (HBV) infection. Thus, the aim of study was to analyze the changes in renal function of chronic hepatitis B (CHB) patients in response to anti-HBV therapy and the association with tre...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/s12985-017-0712-x

    authors: Zhang Y,Zhang WL,Pang XW,Wang LX,Wei X,Huang CX,Bai XF,Han S,Liu LN,Lian JQ

    更新日期:2017-03-09 00:00:00

  • 18S rRNA is a reliable normalisation gene for real time PCR based on influenza virus infected cells.

    abstract:BACKGROUND:One requisite of quantitative reverse transcription PCR (qRT-PCR) is to normalise the data with an internal reference gene that is invariant regardless of treatment, such as virus infection. Several studies have found variability in the expression of commonly used housekeeping genes, such as beta-actin (ACTB...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-9-230

    authors: Kuchipudi SV,Tellabati M,Nelli RK,White GA,Perez BB,Sebastian S,Slomka MJ,Brookes SM,Brown IH,Dunham SP,Chang KC

    更新日期:2012-10-08 00:00:00

  • Could FIV zoonosis responsible of the breakdown of the pathocenosis which has reduced the European CCR5-Delta32 allele frequencies?

    abstract:BACKGROUND:In Europe, the north-south downhill cline frequency of the chemokine receptor CCR5 allele with a 32-bp deletion (CCR5-Delta32) raises interesting questions for evolutionary biologists. We had suggested first that, in the past, the European colonizers, principally Romans, might have been instrumental of a pro...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-5-119

    authors: Faure E

    更新日期:2008-10-16 00:00:00

  • First confirmation of imported dengue virus serotype 2 complete genome in urine from a Chinese traveler returning from India.

    abstract::Dengue virus (DENV) is a mosquito-borne virus that has four serotypes. Collection of serum from patients is time- and labor- consuming, and presents a high injury risk for infants and children. The genomic and serological diagnosis of imported dengue fever from a urine sample was used as a non-invasive diagnostic meth...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-11-56

    authors: Ma X,Zhen W,Yang P,Sun X,Nie W,Zhang L,Xu H,Hu K

    更新日期:2014-03-25 00:00:00

  • Origin of measles virus: divergence from rinderpest virus between the 11th and 12th centuries.

    abstract::Measles, caused by measles virus (MeV), is a common infection in children. MeV is a member of the genus Morbillivirus and is most closely related to rinderpest virus (RPV), which is a pathogen of cattle. MeV is thought to have evolved in an environment where cattle and humans lived in close proximity. Understanding th...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-7-52

    authors: Furuse Y,Suzuki A,Oshitani H

    更新日期:2010-03-04 00:00:00

  • The directionality of the nuclear transport of the influenza A genome is driven by selective exposure of nuclear localization sequences on nucleoprotein.

    abstract:BACKGROUND:Early in infection, the genome of the influenza A virus, consisting of eight complexes of RNA and proteins (termed viral ribonucleoproteins; vRNPs), enters the nucleus of infected cells for replication. Incoming vRNPs are imported into the nucleus of infected cells using at least two nuclear localization seq...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-6-68

    authors: Wu WW,Panté N

    更新日期:2009-06-02 00:00:00

  • Co-circulation of multiple reassortant H6 subtype avian influenza viruses in wild birds in eastern China, 2016-2017.

    abstract:BACKGROUND:H6 subtype influenza viruses were prevalent in domestic poultry and wild birds, which also could pose potential threat to humans. However, little is known about the prevalence of H6 subtype viruses in wild birds in eastern China, a crucial stopover or wintering site for migratory wild birds along the East As...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/s12985-020-01331-z

    authors: Hu C,Li X,Zhu C,Zhou F,Tang W,Wu D,Li Z,Zhou L,Liu J,Wei X,Cui J,Wang T,He G

    更新日期:2020-04-29 00:00:00

  • Evidence of recombination in quasispecies populations of a Hepatitis C Virus patient undergoing anti-viral therapy.

    abstract:BACKGROUND/AIM:Hepatitis C virus (HCV) has been the subject of intense research and clinical investigation as its major role in human disease has emerged. HCV circulates in vivo as a complex population of different but closely related viral variants, commonly referred to as a quasispecies. The extent to which recombina...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/1743-422X-3-87

    authors: Moreno MP,Casane D,López L,Cristina J

    更新日期:2006-10-24 00:00:00

  • Codon usage patterns of LT-Ag genes in polyomaviruses from different host species.

    abstract:BACKGROUND:Polyomaviruses (PyVs) have a wide range of hosts, from humans to fish, and their effects on hosts vary. The differences in the infection characteristics of PyV with respect to the host are assumed to be influenced by the biochemical function of the LT-Ag protein, which is related to the cytopathic effect and...

    journal_title:Virology journal

    pub_type: 杂志文章

    doi:10.1186/s12985-019-1245-2

    authors: Cho M,Kim H,Son HS

    更新日期:2019-11-14 00:00:00