Abstract：
:To establish a renewable source of parvovirus B19 antigens for diagnostic tests, gene sequences for the viral capsid proteins, VP1 and VP2, were cloned into baculovirus expression vectors and the recombinant viruses used to infect Sf9 insect cells. Cell lysates examined by immunoblotting demonstrated reactive proteins corresponding to the expected sizes of native VP1 (83 kDa) and VP2 (58 kDa). The VP2 protein was produced efficiently in quantity and self-assembled into empty capsids as shown by density equilibration in a CsCl step gradient. The VP2 protein was purified and used as an antigen in antibody-capture enzyme immunoassays for the detection of B19 IgG and IgM antibodies. Compared to a standard antibody-capture EIA based on whole viral antigen, the VP2-EIA gave a sensitivity of 100% and specificity of 97% in detection of B19 IgM in 138 patients suspected of B19 infection. No IgM-positive specimens were missed. IgG detection yielded a sensitivity of 100% and specificity of 96% in the same population. Recombinant VP2 capsid proteins expressed in baculovirus-infected insect cells can substitute for serum-derived B19 virus in standard antibody-capture EIA for the detection of B19 IgG and IgM with comparable results.
journal_name
J Virol Methodsjournal_title
Journal of virological methodsauthors
Kock WCdoi
10.1016/0166-0934(95)00046-wsubject
Has Abstractpub_date
1995-09-01 00:00:00pages
67-82issue
1eissn
0166-0934issn
1879-0984pii
016609349500046Wjournal_volume
55pub_type
杂志文章abstract：:A polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay has been developed to detect and differentiate between canine parvovirus (CPV) and mink enteritis virus (MEV). Eight CPV and three MEV epidemic strains isolated from 28 pathological samples from dogs and minks suspected of being infe...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2014.09.014
更新日期：2014-12-15 00:00:00
abstract：:This study assesses the ability of quantitative real-time PCR to measure the effects of virus DNA polymerase inhibitors on EBV DNA and late mRNAs syntheses in EBV-producing cell lines. In-house real-time quantitative PCRs were used to measure EBV DNA (thymidine kinase) and mRNAs (BLLF1 gene/gp350/220, BVRF2 gene/prote...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2007.02.005
更新日期：2007-07-01 00:00:00
abstract：BACKGROUND:Molecular assays for diagnosis of Flu A, Flu B, and RSV with short turn-around-time (TAT) are of considerable clinical importance. In addition, rapid and accurate diagnosis of a large panel of viral and atypical pathogens can be crucial in immunocompromised patients. OBJECTIVES:First, to evaluate the perfor...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2017.03.013
更新日期：2017-07-01 00:00:00
abstract：:When full-length molecular clones of porcine endogenous retrovirus (PERV)-A and porcine endogenous retrovirus (PERV)-B were passaged on human cells, an increase in the length of the long terminal repeat (LTR) was reported. A 39-bp repeat box in the LTR U3 region was multimerized dynamically upon replication, acting as...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2012.01.023
更新日期：2012-04-01 00:00:00
abstract：:Fowl adenovirus serotype-4 (FAdV-4) has been recognized as a predominant threat to the broilers aged from three to five weeks. Hydropericardium syndrome (HPS) is one of its major clinical diseases by FAdV-4 resulting in heavy economic losses. In this study, a loop-mediated isothermal amplification coupling with a late...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2019.04.026
更新日期：2019-08-01 00:00:00
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
更新日期：1997-05-01 00:00:00
abstract：:Numerous strategies have been employed in an attempt to improve the immunogenicity and efficacy of nucleic acid vaccines. In the present study, the immunogenicity in the induction of humoral and cellular immune responses to HIV-1 DNA vaccine expressing a chimeric gene of gag and gp120 and the adjuvant effect of IFN-al...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2007.07.016
更新日期：2007-12-01 00:00:00
abstract：:Understanding the ability to survive in an aerosol leads to better understanding of the hazard posed by pathogenic organisms and can inform decisions related to the control and management of disease outbreaks. This basic survival information is sometimes lacking for high priority select agents such as the filoviruses ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2011.06.021
更新日期：2011-10-01 00:00:00
abstract：:The prevalence of porcine teschovirus (PTV) in swine herds in northeast China was investigated. In 2008-2009, 1384 samples of pig sera were collected from 42 farms in Shandong, Hebei, Heilongjiang, and Jilin provinces and in Tianjin City and were tested for specific antibody against PTV-8 by immunofluorescence assay. ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2013.06.005
更新日期：2013-10-01 00:00:00
abstract：:A real-time RT-PCR assay was developed utilizing dual-labeled fluorescent probes binding to VP4 sequence that are specific to the classical (Cl), variant (V) and very virulent (vv) strains of infectious bursal disease virus (IBDV). The assay was highly sensitive and could detect as little as 3 x 10(2) to 3 x 10(3) cop...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2005.03.009
更新日期：2005-07-01 00:00:00
abstract：:The presence of competent vectors in some countries currently free of Rift Valley fever (RVF) and global changes in climate, travel and trade have increased the risk of RVF spreading to new regions and have emphasised the need for accurate and reliable diagnostic tools for early diagnosis during RVF outbreaks. Highly ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2011.07.011
更新日期：2011-11-01 00:00:00
abstract：:Reverse genetics systems, with the ability to manipulate viral genomes at the DNA molecular level, are an important platform for study of the assembly and function of viruses. Genome manipulation, such as gene recombination, mosaicism, and mutation may interfere with replication, assembly and release of viruses. An ef...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2008.11.010
更新日期：2009-03-01 00:00:00
abstract：:A rapid and sensitive method for detecting HIV-1 DNA sequences amplified by polymerase chain reaction (PCR) is described. The method uses solution phase hybridization for rapid and efficient annealing between digoxigenin-labeled targets and biotinylated capture probes. Hybrids containing biotin are captured onto strep...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(92)90174-c
更新日期：1992-07-01 00:00:00
abstract：:Canine distemper virus (CDV) is an important pathogen of many carnivores. We are developing a field-based model of morbillivirus virulence and pathogenesis through a study of distemper in naturally infected free-ranging raccoons. The isolation of CDV from raccoon tissues is essential for this work. CDV has often been ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2004.02.004
更新日期：2004-06-15 00:00:00
abstract：:Tissue culture ID50 and plaque assays for the Autographa californica nuclear polyhedrosis virus, using the Spodoptera littoralis cell line HPB-SL, were developed. Direct comparison using these assay methods showed that these cells were as susceptible to infection as the more commonly used Spodoptera frugiperda cell li...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(85)90082-5
更新日期：1985-01-01 00:00:00
abstract：:Loop-mediated isothermal amplification is a novel method for rapid amplification of DNA. It has been adopted widely for the detection of virus because of its simplicity, rapidity, and specificity. A loop-mediated isothermal amplification assay was developed for the detection of porcine parvovirus. Four primers specifi...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2008.10.004
更新日期：2009-02-01 00:00:00
abstract：:A detailed growth and purification scheme suitable for producing relatively large quantities of fully active, pure SV40 is presented together with data on recovery and purity at each step of the procedure. The scheme was designed to prevent the initial binding of virus to cell components as well as contamination of th...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(81)90051-3
更新日期：1981-10-01 00:00:00
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
更新日期：2010-01-01 00:00:00
abstract：:A Western blot assay was developed and analyzed against the comparable standard, immunoprecipitation of (35)[S]-methionine/cysteine-labeled ovine progressive pneumonia virus (OPPV) proteins, for its ability to detect anti-OPPV antibodies using endpoint titers. Western blot analysis is 12-fold more sensitive in detecti...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2006.06.025
更新日期：2006-11-01 00:00:00
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
更新日期：2009-06-01 00:00:00
abstract：:A multiplex real-time PCR assay was developed to detect and quantify the Citrus tristeza virus (CTV) genotypic mixture present in infected plants. CTV isolate FS627, a complex Florida isolate containing T36, T30 and VT genotypes and its aphid transmitted subisolates was used. The relative quantitative assay was carrie...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2009.12.001
更新日期：2010-03-01 00:00:00
abstract：:Bovine Papillomavirus type 2 (BPV-2) and chronic intoxication by bracken fern ingestion were associated with urinary bladder lesions and the clinical signs of enzootic haematuria in adult cattle. Clinically enzootic haematuria is characterized by intermittent haematuria followed by animal death. Enzootic haematuria ca...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2005.01.021
更新日期：2005-06-01 00:00:00
abstract：:Bluetongue (BT) is an arboviral disease, which can often be fatal in naïve sheep and white tailed deer, but is usually less severe, or unapparent in other ruminants. Twenty-six bluetongue virus (BTV) serotypes have been recognised so far, two of which (BTV-25 and BTV-26) were recently identified by phylogenetic compar...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2014.11.012
更新日期：2015-03-01 00:00:00
abstract：:Studies have shown that an HIV (HIV-PA) agglutination assay (Serodia) for the detection of antibody to human immunodeficiency virus (HIV) can be as sensitive and as specific as enzyme-linked immunosorbent assay (ELISA). However, since this HIV assay was designed to detect antibody to the HIV-1 virus, a substantial num...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(94)00092-u
更新日期：1995-01-01 00:00:00
abstract：:The dot-immunobinding assay (DIBA) was adapted for detection of citrus tristeza virus (CTV) and compared with DAS-ELISA and DAS-indirect ELISA. DIBA was easy to perform and as sensitive as either ELISA procedure for CTV diagnosis. The entire test could be performed in 2-3 h using polyclonal antibodies, with minimal la...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(91)90108-c
更新日期：1991-10-01 00:00:00
abstract：:Enteric adenoviruses 40 and 41 (Ad40 and Ad41) are a prominent cause of gastroenteritis in young children. Diagnosis of these enteric types by conventional means is complicated by their fastidious growth characteristics. Enteric adenovirus growth was enhanced by cocultivation. Typing of enteric isolates currently enta...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(92)90166-b
更新日期：1992-07-01 00:00:00
abstract：:Enzyme-linked immunosorbent assay (ELISA) systems for serum IgG and IgM antibodies to human parvovirus B19 were established by utilizing anti-B19 monoclonal antibodies (mAbs) and human plasma B19 antigen. The specificities of IgG and IgM ELISA were confirmed by indirect immunofluorescence staining and Western blot imm...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(89)90146-8
更新日期：1989-11-01 00:00:00
abstract：:Six cell lines routinely used in laboratories were tested for permissiveness to the infection with the newly identified human coronavirus NL63. Two monkey epithelial cell lines, LLC-MK2 and Vero-B4, showed a cytopathic effect (CPE) and clear viral replication, whereas no CPE or replication was observed in human lung f...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2006.07.023
更新日期：2006-12-01 00:00:00
abstract：:Paramyxoviruses, including measles virus (MV), human metapneumovirus (HMPV), human respiratory syncytial virus (HRSV) and canine distemper virus (CDV), are transmitted via the respiratory route. Despite their close phylogenetic relationship, the pathogenesis of these viruses is very different. To study viral tropism a...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2013.06.016
更新日期：2013-10-01 00:00:00
abstract：:Combining primers created from the sequence information of two baculo-like viruses of penaeid shrimp, Baculovirus penaei (BP) and Monodon baculovirus (MBV), produced a 750 bp band on a 0.8% agarose gel using White Spot Syndrome Virus (WSSV), from Penaeus monodon, as the DNA template. The PCR fragment was ligated to a ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(96)02128-3
更新日期：1997-01-01 00:00:00
