Abstract：
:Diagnosis of hepatitis C virus (HCV) infection is based on testing for antibodies to HCV (anti-HCV), hepatitis C core antigen (HCV cAg) and HCV RNA. To ensure quality control (QC) and quality assurance (QA), proficiency panels are provided by reference laboratories and various international organizations, requiring costly dry ice shipments to maintain specimen integrity. Alternative methods of specimen preservation and transport can save on shipping and handling and help in improving diagnostics by facilitating QA/QC of various laboratories especially in resource limited countries. Plasma samples positive for anti-HCV and HCV RNA were either dried using dried tube specimens (DTS) method or lyophilization for varying durations of time and temperature. Preservation of samples using DTS method resulted in loss of anti-HCV reactivity for low-positive samples and did not generate enough volume for HCV RNA testing. Lyophilized samples tested positive for anti-HCV even after storage at 4 °C and 25 °C for 12 weeks. Further, HCV RNA was detectable in 5 of 5 (100%) samples over the course of 12 week storage at 4, 25, 37 and 45 °C. In conclusion, lyophilization of specimens maintains integrity of plasma samples for testing for markers of HCV infection and can be a potent mode of sharing proficiency samples without incurring huge shipping costs and avoids challenges with dry ice shipments between donor and recipient laboratories.
journal_name
J Virol Methodsjournal_title
Journal of virological methodsauthors
Poe A,Duong NT,Bedi K,Kodani Mdoi
10.1016/j.jviromet.2017.12.004subject
Has Abstractpub_date
2018-03-01 00:00:00pages
53-55eissn
0166-0934issn
1879-0984pii
S0166-0934(17)30696-1journal_volume
253pub_type
杂志文章abstract：:A reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay was developed for the rapid detection of equine coronavirus (ECoV). This assay was conducted at 60 °C for 40 min. Specificity of the RT-LAMP assay was confirmed using several equine intestinal and respiratory pathogens in addition to ECoV. ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2015.02.001
更新日期：2015-04-01 00:00:00
abstract：:Green fluorescent protein (GFP) was targeted into bacteriophage T4 heads and proheads as a probe of the internal environment. Targeting was accomplished with internal protein III (IPIII) fusion proteins or capsid targeting sequence (CTS)-tagged proteins, where CTS is the 10-amino acid residue CTS of IPIII. Recombinant...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(00)00166-x
更新日期：2000-07-01 00:00:00
abstract：:The results of polymerase chain reaction (PCR) and nested polymerase chain reaction (n-PCR) assays for the diagnosis of canine coronavirus (CCV) infection, and the comparison with other diagnostic techniques, such as electron microscopy (EM) and virus isolation using A-72 cell line are reported. The study was carried ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(99)00134-2
更新日期：2000-01-01 00:00:00
abstract：:A method for rapid and reliable detection of Tomato spotted wilt virus (TSWV) (Tospovirus, Bunyaviridae) in its vector Frankliniella occidentalis (Thysanoptera Thripidae) would be a useful tool for studying the epidemiology of this virus. A RT-PCR method developed for this purpose is reported. The method was tested on...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(03)00048-x
更新日期：2003-04-01 00:00:00
abstract：:A method is described that allows the rapid screening of field isolates of rotavirus for the detection of specific viral RNA segments. Cloned cDNA copies of viral genomic RNAs are employed for detection in the assay which makes use of the dot-hybridization technique of Thomas (1980). The assay developed was shown to b...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(84)90009-0
更新日期：1984-10-01 00:00:00
abstract：:To map the epitopes of VP2 protein of chicken anemia virus (CAV), VP2 was expressed as a fusion protein in Escherichia coli BL21 (DE3). The Western blot demonstrated that recombinant VP2 protein could be recognized by sera of chickens infected with CAV. Female BALB/c mice were immunized with purified recombinant VP2 p...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2007.03.016
更新日期：2007-08-01 00:00:00
abstract：:The availability of whole genome sequencing has contributed to many aspects of dengue research, and its use in dengue virus (DENV) surveillance for early epidemic warning has been proposed. Methods to sequence the genomes of individual dengue serotypes have been described previously, but no single method is known to b...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2010.06.013
更新日期：2010-10-01 00:00:00
abstract：:Dengue virus infection is a major public health problem throughout tropical countries. In endemic areas, dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS) are common complications resulting in death. However, serological confirmation of dengue-related illness is often complicated and time-consuming. Detect...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(95)00026-q
更新日期：1995-08-01 00:00:00
abstract：:Epidemics of acute hemorrhagic conjunctivitis are always explosive and extensive, and have been recognized as a serious international public health problem. Enterovirus 70 and coxsackievirus A24 variant have been identified as the major etiological agents in acute hemorrhagic conjunctivitis outbreaks worldwide. A nove...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2009.02.022
更新日期：2009-07-01 00:00:00
abstract：:Transmission electron microscopy can be used to observe the ultrastructure of viruses and other microbial pathogens with nanometer resolution. In a transmission electron microscope (TEM), the image is created by passing an electron beam through a specimen with contrast generated by electron scattering from dense eleme...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2016.10.005
更新日期：2016-12-01 00:00:00
abstract：:An efficient method for isolation of virus mutants with antigenically altered proteins is described. The method is based on the separation of viruses with wild-type and antigenically altered proteins by affinity chromatography using monoclonal antibodies (MAbs). A nonessential glycoprotein E (gE) of Aujeszky's disease...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(98)00137-2
更新日期：1999-01-01 00:00:00
abstract：:Viral susceptibility testing has been traditionally performed by the plaque reduction assay (PRA) which is laborious, time consuming, relatively expensive, and requires subjective input by the reader. An in situ cellular enzyme-linked immunosorbent assay (ELISA) has been developed with the potential to overcome many o...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(98)00150-5
更新日期：1999-02-01 00:00:00
abstract：:To develop reverse genetics system of RNA viruses, cloning of full-length viral genome is required which is often challenging due to many steps involved. In this study, we report cloning of full-length cDNA from an Indian field isolate (CSFV/IVRI/VB-131) of classical swine fever virus (CSFV) using in vitro overlap ext...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2015.10.006
更新日期：2015-12-15 00:00:00
abstract：:Bovine viral diarrhea virus (BVDV) can contaminate biological products produced in bovine or porcine cells or manufactured using bovine sera. A rapid, specific, sensitive, and practical method of detecting BVDV in bio-products is needed. The purpose of this study was to compare three assays with respect to their abili...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2014.05.020
更新日期：2014-10-01 00:00:00
abstract：:Nucleic-acid amplification technology (NAT) assays have been implemented for HCV and HIV-1 in the United States, and many parts of Europe, Australia and Asia. Nucleic acid detection assays utilize many different technologies, and the WHO International Standards for nucleic acid tests are widely used to compare them. C...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2004.01.021
更新日期：2004-06-01 00:00:00
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
更新日期：1999-01-01 00:00:00
abstract：:A one-step, rapid and economical method for potato leafroll virus (PLRV) RNA release that is applicable to the use on a microcentrifuge scale is described. Discs (3-6 mm diameter) from leaves, petioles, stems, and tubers of potato plants were incubated in microcentrifuge tubes with detergent solution. The supernatants...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(99)00102-0
更新日期：1999-12-01 00:00:00
abstract：:To test the hypothesis that many viruses remain to be discovered in plants, a procedure was developed to sequence nucleic acids cloned randomly from virus-like particle fractions of plant homogenates. As a test of the efficiency of the procedure we targeted Ambrosia psilostachya, western ragweed, plants growing at the...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2008.05.030
更新日期：2008-09-01 00:00:00
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
更新日期：2015-09-15 00:00:00
abstract：:Bovine leukemia virus (BLV) is widely distributed in U.S. cattle herds. It infects B lymphocytes and causes neoplastic disease in 5-10% of infected animals. Direct economic losses are incurred as a result of death, reduced milk production and condemnation at slaughter. Thus the identification of cattle infected with B...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(91)90009-o
更新日期：1991-06-01 00:00:00
abstract：:28 isolates of canine parvovirus type-2 (CPV-2) were obtained from dogs with hemorrhagic gastroenteritis in Italy. The antigenic structure of CPV-2 isolates was characterized, using four discriminating monoclonal antibodies. In addition, four vaccinal strains were examined. Similar to reports from Australia and the Un...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(98)00055-x
更新日期：1998-08-01 00:00:00
abstract：:Two fragments, S66 and S55, of the S glycoprotein of the newly identified canine coronavirus type I (CCoV type I), were expressed in a procariotic system. The purified recombinant proteins of 350 and 366 amino acids in length, respectively, were employed to develop an enzyme-linked immunosorbent assay (ELISA) for the ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2003.12.003
更新日期：2004-04-01 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：:Lentiviral vectors (LVs) are promising delivery systems for gene therapy. To enhance the efficiency of target cell transduction by LVs, protocols often include the addition of culture additives. In this study, the cationic amphipathic peptide LAH4-L1 (KKALLAHALHLLALLALHLAHALKKA), a DNA transfection agent, was evaluate...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2013.02.005
更新日期：2013-05-01 00:00:00
abstract：:We describe a laboratory information system employing a virus and chlamydia database developed over seven years which is used by a regional laboratory, performing virus and chlamydia testing. The information system is implemented on a University mainframe computer and accessed by computer terminals in the laboratory. ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(89)90108-0
更新日期：1989-12-01 00:00:00
abstract：:A recombinant retroviral system was used for the analysis of early HIV breakthrough infection in the presence of antiviral drugs. The use of replication-defective HIV allowed a quantitative analysis of a single cycle of infection. This report characterizes this recombinant HIV system and demonstrates it's validity in ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/s0166-0934(97)00212-7
更新日期：1998-04-01 00:00:00
abstract：:A rapid and accurate detection and identification system was developed for flaviviruses that makes use of reverse transcription-polymerase chain reaction (RT-PCR). A primer pair (YF-1 and YF-3), which corresponds to the highly conserved sequence at 3' noncoding region among flaviviruses, was useful for identification ...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(93)90020-r
更新日期：1993-03-01 00:00:00
abstract：:We have developed a murine monoclonal antibody reactive with a major immediate early 72,000 dalton protein of human cytomegalovirus and utilized this reagent in a rapid virus titration and microneutralization assay. Because of the early expression of this virus encoded protein, both assays could be accomplished within...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/0166-0934(89)90129-8
更新日期：1989-02-01 00:00:00
abstract：:Shrimp farming is one of the most important aquaculture activities. Expansion and intensification of shrimp farming has been accompanied with the outbreak of diseases, which threaten the development and sustainability of the industry. Viral diseases are the major challenges faced by shrimp farming industries. The prev...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2014.05.006
更新日期：2014-09-01 00:00:00
abstract：:Mungbean yellow mosaic India virus (MYMIV) infecting soybean and other legumes causes yellow mosaic disease (YMD). Evaluation of soybean genotypes for YMD resistance involves field screening at disease hot spots or in a protected environment using infectious clones or viruliferous whiteflies as sources of virus inocul...
journal_title：Journal of virological methods
pub_type： 杂志文章
doi：10.1016/j.jviromet.2019.03.002
更新日期：2019-06-01 00:00:00
