Total HCV core antigen assay. A new marker of HCV viremia and its application during treatment of chronic hepatitis C.

Abstract:

:The present study assesses the clinical usefulness of the hepatitis C core antigen assay for monitoring of patients being treated for chronic hepatitis C virus (HCV) infection. Eighty-six serum samples were selected at random from 16 patients and levels of HCV RNA and HCV core antigen were determined simultaneously and in parallel to compare both techniques. The data obtained were compared by Pearson's correlation and the coefficients calculated by Fisher transformation and by calculating the difference and standard error. A good linear correlation was observed between both techniques. Maximum correlation, with significant difference, was found between patients infected with the 1a genotype and other genotypes. In conclusion, the HCV core antigen assay is useful for the diagnosis of early infection; however, its use for determining the exact timing of viral elimination during treatment is clearly unsuitable.

journal_name

J Virol Methods

authors

Lorenzo J,Castro A,Aguilera A,Prieto E,López-Calvo S,Regueiro B,Pedreira J

doi

10.1016/j.jviromet.2004.05.002

subject

Has Abstract

pub_date

2004-09-15 00:00:00

pages

173-7

issue

2

eissn

0166-0934

issn

1879-0984

pii

S0166093404001466

journal_volume

120

pub_type

杂志文章
  • Fine mapping of an immunodominant region of the transmembrane protein of the human immunodeficiency virus (HIV-1).

    abstract::Peptides of HIV sequences are significant for antibody screening systems, and because of the limited number of amino acids they have to represent immunodominant regions of the virus proteins in order to maintain sensitivity. We detected, in a region of the outside loop of the transmembrane protein gp41 of the human im...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/0166-0934(89)90030-x

    authors: Döpel SH,Porstmann T,Henklein P,von Baehr R

    更新日期:1989-08-01 00:00:00

  • Comparison of two commercial kits and an in-house ELISA for the detection of equine rotavirus in foal feces.

    abstract::Group A rotaviruses (RVA) are important infectious agents associated with diarrhea in the young of several animal species including foals. Currently, a variety of diagnosis methods are commercially available, like ELISA, latex agglutination and immunochromatographic assays. These commercial tests are mainly designed f...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2015.05.002

    authors: Miño S,Kern A,Barrandeguy M,Parreño V

    更新日期:2015-09-15 00:00:00

  • Assays for precise quantification of total (including short) and elongated HIV-1 transcripts.

    abstract::Despite intensive study, it is unclear which mechanisms are responsible for latent HIV infection in vivo. One potential mechanism is inhibition of HIV transcriptional elongation, which results in short abortive transcripts containing the trans-activation response (TAR) region. Because the relative levels of total (inc...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2016.12.017

    authors: Kaiser P,Joshi SK,Kim P,Li P,Liu H,Rice AP,Wong JK,Yukl SA

    更新日期:2017-04-01 00:00:00

  • Histidine-tagging and purification of tobacco etch potyvirus helper component protein.

    abstract::The coding sequence for a series of six histidines (his-tag) was inserted near the 5' terminus of the helper component (HC) coding region of tobacco etch potyvirus (TEV). Full length genomic clones containing the his-tag coding sequence were infectious and produced symptoms in tobacco (Nicotiana tabacuma) similar to t...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/s0166-0934(98)00085-8

    authors: Blanc S,Dolja VV,Llave C,Pirone TP

    更新日期:1999-01-01 00:00:00

  • Rapid detection and differentiation of bovine herpesvirus 1 and 5 glycoprotein C gene in clinical specimens by multiplex-PCR.

    abstract::A multiplex polymerase chain reaction (multiplex-PCR) to detect and differentiate bovine herpesvirus 1 (BoHV-1) and 5 (BoHV-5) was developed using primers for the gene sequence that encodes the glycoprotein C. The technique was assessed against the BoHV-1 and BoHV-5 cell culture adapted strains, and clinical samples c...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2005.05.001

    authors: Claus MP,Alfieri AF,Folgueras-Flatschart AV,Wosiacki SR,Médici KC,Alfieri AA

    更新日期:2005-09-01 00:00:00

  • A rapid in vitro polyomavirus DNA replication assay.

    abstract::Traditionally, the Hirt extraction method, a multi-step, labor-intensive and time-consuming procedure, is employed to extract selectively low-molecular weight DNA for polyomavirus DNA replication analyses. DNA replication results obtained with this approach are often inconsistent between replicate samples. To increase...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2004.08.012

    authors: Ziegler K,Bui T,Frisque RJ,Grandinetti A,Nerurkar VR

    更新日期:2004-12-01 00:00:00

  • Extraction and purification of hepatitis B virus-like M particles from a recombinant Saccharomyces cerevisiae strain using alumina powder.

    abstract::A recombinant hepatitis B surface antigen (HBsAg) has been produced in the yeast Saccharomyces cerevisiae and used as a vaccine against hepatitis B virus (HBV) infection. The present study aimed to optimize the extraction of recombinant virus-like particles (rVLPs) to develop a simple purification procedure based on g...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2012.09.023

    authors: Hadiji-Abbes N,Martin M,Benzina W,Karray-Hakim H,Gergely C,Gargouri A,Mokdad-Gargouri R

    更新日期:2013-01-01 00:00:00

  • Linear amplification followed by single primer polymerase chain reaction to amplify unknown DNA fragments: complete nucleotide sequence of Oropouche virus M RNA segment.

    abstract::The whole nucleotide sequence of Oropouche virus medium (M) RNA, Orthobunyavirus genus, Bunyaviridae family, was obtained using a new genomic amplification method. This method is based on the use of a single and specific primer of high melting temperature in a linear amplification (LA), followed by a single primer pol...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2003.09.018

    authors: Aquino VH,Figueiredo LT

    更新日期:2004-01-01 00:00:00

  • Enterovirus genomes in wastewater: concentration on glass wool and glass powder and detection by RT-PCR.

    abstract::Standard methods for detecting enteroviruses in environmental samples require cell culture, which is time consuming and expensive. The reverse transcription-polymerase chain reaction (RT-PCR) is a rapid, sensitive method for detecting enteroviruses in water. However, environmental samples often contain substances that...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/s0166-0934(97)02193-9

    authors: Gantzer C,Senouci S,Maul A,Levi Y,Schwartzbrod L

    更新日期:1997-05-01 00:00:00

  • Strategies for detection of transfusion-transmitted viruses eluding identification by conventional serologic tests. II. Detection of host DNA in human plasmas with elevated alanine aminotransferase.

    abstract::As a prelude to the development of nucleic acid probes specific for non-A, non-B hepatitis virus(es) (NANBV), plasmas with alanine aminotransferase levels greater than or equal to 110 IU were assayed for DNA by a radioimmunoassay. Approximately 50% of such plasmas are expected to contain NANBV. One-hundred and seventy...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/0166-0934(84)90042-9

    authors: Neurath AR,Strick N,Miller K,Waldman AA

    更新日期:1984-02-01 00:00:00

  • Development of a real-time TaqMan RT-PCR assay for the detection of H9N2 avian influenza viruses.

    abstract::Avian influenza viruses (AIVs) of the H9N2 subtype are a major economic problem in the poultry industry in Israel. Most field isolates from the last decade differ significantly from H9N2 isolates from Europe and the USA, rendering published detection methods inadequate. This study aimed to develop a real-time TaqMan((...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2010.04.019

    authors: Ben Shabat M,Meir R,Haddas R,Lapin E,Shkoda I,Raibstein I,Perk S,Davidson I

    更新日期:2010-09-01 00:00:00

  • Generation of a porcine alveolar macrophage cell line for the growth of porcine reproductive and respiratory syndrome virus.

    abstract::Porcine reproductive and respiratory syndrome virus (PRRSV) has a marked tropism for cells of the monocyte-macrophage lineage and accordingly, replicates in fully differentiated alveolar macrophages in the natural host. Despite the identification of several putative receptors for PRRSV on porcine alveolar macrophages ...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2009.11.003

    authors: Lee YJ,Park CK,Nam E,Kim SH,Lee OS,Lee du S,Lee C

    更新日期:2010-02-01 00:00:00

  • The development of a loop-mediated isothermal amplification assay for rapid and sensitive detection of abalone herpesvirus DNA.

    abstract::A loop-mediated isothermal amplification (LAMP) assay was developed for the detection of abalone herpesvirus DNA. Two pairs of primers were designed, based on the sequence of the DNA polymerase gene of abalone herpesvirus. The reaction temperature and time were optimized to 63°C and 60min, respectively. LAMP amplicons...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2013.11.011

    authors: Chen MH,Kuo ST,Renault T,Chang PH

    更新日期:2014-02-01 00:00:00

  • A newly developed immunofluorescence assay for simultaneous detection of antibodies to human immunodeficiency virus type 1 and type 2.

    abstract::Immunofluorescence assays (IFA) that simultaneously distinguish between antibodies against closely related human immunodeficiency virus type 1 (HIV-1) and type 2 (HIV-2) infections have not been readily available. Serum specimens from 95 HIV-1-infected, 26 HIV-2-infected and 3 HIV-1/HIV-2 dually infected individuals a...

    journal_title:Journal of virological methods

    pub_type: 临床试验,杂志文章

    doi:10.1016/0166-0934(94)00107-r

    authors: Tanabe-Tochikura A,Ang Singh MT,Tsuchie H,Zhang J,Paladin FJ,Kurimura T

    更新日期:1995-04-01 00:00:00

  • A feline kidney cell line-based plaque assay for feline calicivirus, a surrogate for Norwalk virus.

    abstract::Feline calicivirus (FCV) has been used by researchers as a surrogate for Norwalk virus (NV), since they share a similar genomic organization, physicochemical characteristics, and are grouped in the same family, Caliciviridae. Unlike NV, however, FCV can grow in established cell lines and produce a syncytial form of cy...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/s0166-0934(02)00214-8

    authors: Bidawid S,Malik N,Adegbunrin O,Sattar SA,Farber JM

    更新日期:2003-02-01 00:00:00

  • Development of a high-throughput human rhinovirus infectivity cell-based assay for identifying antiviral compounds.

    abstract::Asthma and chronic obstructive pulmonary disease exacerbations are associated with human rhinovirus (HRV) lung infections for which there are no current effective antiviral therapies. To date, HRV infectivity of cells in vitro has been measured by a variety of biochemical and immunological methods. This paper describe...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2011.02.002

    authors: Phillips T,Jenkinson L,McCrae C,Thong B,Unitt J

    更新日期:2011-05-01 00:00:00

  • Establishment of an indicator cell line for monitoring bovine immunodeficiency virus infection and inhibitor susceptibility.

    abstract::Indicator cell lines are useful biological tools for monitoring virus infection. In order to monitor infection with bovine immunodeficiency virus (BIV) in vitro, an indicator cell line derived from baby hamster kidney cells which contains integrated copies of an enhanced green fluorescent protein gene driven by the BI...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2009.07.007

    authors: Yao X,Su Y,Liu C,Tan J,Liu L,Geng YQ,Qiao WT

    更新日期:2010-01-01 00:00:00

  • A flow-through cell counting assay for point-of-care enumeration of CD4 T-cells.

    abstract::CD4 T-cell count is a priority for staging HIV disease and guiding clinical management as part of HIV care. Conventional CD4 T-cell enumeration methods based on flow cytometry are expensive, require well-trained personnel, and are challenging to use in rural, resource-scarce areas. A simple CD4 T-cell count test that ...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2019.05.012

    authors: Bystryak S,Bandwar RP,Santockyte R

    更新日期:2019-09-01 00:00:00

  • Increased hepatitis E virus prevalence on Dutch pig farms from 33 to 55% by using appropriate internal quality controls for RT-PCR.

    abstract::Pigs have been suggested to be a potential reservoir for locally acquired human hepatitis E virus (HEV) infections in the Netherlands. To study possible trends in HEV prevalence in the Dutch pig population, 97 pig farms have been screened for the presence of HEV in stools. The prevalence rate of HEV was estimated at 5...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2007.01.030

    authors: Rutjes SA,Lodder WJ,Bouwknegt M,de Roda Husman AM

    更新日期:2007-07-01 00:00:00

  • Analysis of the expression profiles of Marek's disease virus-encoded microRNAs by real-time quantitative PCR.

    abstract::MicroRNAs (miRNAs) are a large class of endogenous approximately 22-nucleotide long non-coding RNAs involved in post-transcriptional silencing of gene expression by translational repression or direct cleavage of the target mRNAs. Several hundreds of miRNAs have now been identified in a wide range of organisms includin...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2008.02.005

    authors: Xu H,Yao Y,Zhao Y,Smith LP,Baigent SJ,Nair V

    更新日期:2008-05-01 00:00:00

  • Characterization of hepatitis A virus capsid proteins with antisera raised to recombinant antigens.

    abstract::The capsid proteins of hepatitis A virus (HAV) were expressed as fusion proteins of beta-galactosidase in E. coli using the expression vector lambda gt11. Four fusion proteins were stably expressed and used to immunize rabbits to obtain mono-specific antisera. The antisera were unable to neutralize viral infectivity o...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/0166-0934(91)90052-2

    authors: Ross BC,Anderson DA

    更新日期:1991-05-01 00:00:00

  • The use of differential display to isolate viral genomic sequence for rapid development of PCR-based detection methods. A test case using Taura syndrome virus.

    abstract::The purpose of this study was to explore the efficacy of using differential display (DD) to isolate viral genomic sequence using tissues from infected organisms so that a PCR procedure to detect the pathogen may be developed rapidly. The model virus used was the Taura syndrome virus (TSV), a ssRNA virus that cause hig...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2004.06.008

    authors: Lu Y,Wang SY,Lotz JM

    更新日期:2004-10-01 00:00:00

  • Sodium sulphite inhibition of potato and cherry polyphenolics in nucleic acid extraction for virus detection by RT-PCR.

    abstract::Phenolic compounds from plant tissues inhibit reverse transcription-polymerase chain reaction (RT-PCR). Multiple-step protocols using several additives to inhibit polyphenolic compounds during nucleic acid extraction are common, but time consuming and laborious. The current research highlights that the inclusion of 0....

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/s0166-0934(01)00391-3

    authors: Singh RP,Nie X,Singh M,Coffin R,Duplessis P

    更新日期:2002-01-01 00:00:00

  • Development of an immunochromatographic strip for rapid detection of antibodies against classical swine fever virus.

    abstract::The genes encoding the Erns and E2 antigen epitopes of classical swine fever virus (CSFV) were expressed as a chimeric protein in Escherichia coli BL21 by pET expression system. The antigenicity of the expressed protein CnC2 was identified by indirect enzyme-linked immunoabsorbant assay (ELISA) and immunoblot with ant...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2011.12.006

    authors: Li X,Wang L,Shi X,Zhao D,Yang J,Yang S,Zhang G

    更新日期:2012-03-01 00:00:00

  • PG-4 cell plaque assay for xenotropic murine leukemia virus.

    abstract::Xenotropic murine leukemia virus (X-MuLV) is often used in retrovirus elimination studies involving rodent cells. Currently, X-MuLV is measured using a focus-forming assay on mink (MiCl1 S+L-) or cat (PG-4 S+L-) cell lines. An easier and quicker PG-4 cell plaque assay, which retains the statistical reproducibility of ...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/s0166-0934(99)00064-6

    authors: Li Z,Blair M,Thorner L

    更新日期:1999-08-01 00:00:00

  • Optimisation of a single-primer sequence-independent amplification (SP-SIA) assay: detection of previously undetectable norovirus strains associated with outbreaks of gastroenteritis.

    abstract::The introduction of molecular diagnostic methods for investigation of gastroenteritis has significantly reduced the diagnostic gap. However, approximately 25% of cases of gastroenteritis remain undiagnosed even after screening for bacteria, parasites and viruses using the most sensitive PCR and RT-PCR methods availabl...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2009.01.006

    authors: Braham S,Iturriza-Gómara M,Gray J

    更新日期:2009-06-01 00:00:00

  • TaqMan real-time PCR for detection and quantitation of squash leaf curl virus in cucurbits.

    abstract::A real-time PCR assay based on the TaqMan chemistry was developed for reliable detection and quantitation of the squash leaf curl virus (SLCV) in melon and squash plants. This method was highly specific to SLCV and it was about one thousand times more sensitive than the conventional PCR method. The protocol of the rea...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2011.11.024

    authors: Kuan CP,Huang HC,Chang CC,Lu YL

    更新日期:2012-02-01 00:00:00

  • Construction of an infectious Marek's disease virus bacterial artificial chromosome and characterization of protection induced in chickens.

    abstract::Marek's disease virus (MDV) is a highly oncogenic alphaherpesvirus that induces rapid-onset T-cell lymphoma in poultry. The complete genome of the avirulent vaccine strain MDV-814 was cloned as an infectious bacterial artificial chromosome (BAC) using an 8.8-kb fragment containing the self-designed selective marker gu...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2008.10.021

    authors: Cui HY,Wang YF,Shi XM,An TQ,Tong GZ,Lan DS,He L,Liu CJ,Wang M

    更新日期:2009-03-01 00:00:00

  • A multiplex real-time PCR assay for the detection and differentiation of the newly emerged porcine circovirus type 3 and continuously evolving type 2 strains in the United States.

    abstract::A multiplex quantitative real-time polymerase chain reaction (mqPCR) assay was developed and validated for the detection and differentiation of porcine circovirus type 3 (PCV3) and type 2 (PCV2) strains. The assay coverage was 97.9% (184/188) for PCV3 and 99.1% (1889/1907) for PCV2 sequences that were available from t...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2019.03.011

    authors: Wang Y,Feng Y,Zheng W,Noll L,Porter E,Potter M,Cino G,Peddireddi L,Liu X,Anderson G,Bai J

    更新日期:2019-07-01 00:00:00

  • Neutralizing monoclonal antibodies to different clades of Influenza A H5N1 viruses.

    abstract::Four IgG(1kappa) monoclonal antibodies (mAbs) against Influenza A/Chicken/Vietnam/8/2004 (H5N1) virus are described. Three of these showed neutralizing activities against H5N1 strains from clades 1, 2 and 3 using a retroviral pseudotype or live virus microneutralization assay. In the pseudotype assay, the IC(90) neutr...

    journal_title:Journal of virological methods

    pub_type: 杂志文章

    doi:10.1016/j.jviromet.2008.12.016

    authors: Oh S,Selleck P,Temperton NJ,Chan PK,Capecchi B,Manavis J,Higgins G,Burrell CJ,Kok T

    更新日期:2009-05-01 00:00:00