NDLI: Detection of Duck Hepatitis B Virus DNA on Filter Paper by PCR and SYBR Green Dye-Based Quantitative PCR

Content Provider	PubMed Central
Author	Wang, Chi-young J. Giambrone, Joseph J. Smith, Bruce F.
Copyright Year	2002
Abstract	Duck hepatitis B virus (DHBV) belongs to the Hepadnaviridae family, which includes human Hepatitis B virus (HBV) and Woodchuck hepatitis virus. It is widely distributed in wild and domestic ducks due to congenital transmission. HBV is a worldwide health problem, with carriers at risk of developing cirrhosis and liver cancer. Medical staff and scientists working with HBV must be vaccinated because of its contagious nature. DHBV is a safe surrogate for HBV because of their similarities. Collection of serum and blood samples on filter paper has been used to screen for metabolic disorders, genetic diseases, and viral infection and for evolutionary studies of the genome. In this study, DHBV from serum and blood dried on filters was detected by PCR. A 0.1-μl sample was sufficient for detection. The immobilization potential of filter papers for DHBV was examined, and the highest yield of PCR products was observed with Whatman paper. Dried serum was stable under different storage temperatures for 4 weeks, but the yields of PCR products decreased when the temperature was ⩾4°C. The optimal condition for storage was −70°C. A newly developed quantitative PCR based on monitoring the amplification by measuring the increase in fluorescence caused by the binding of SYBR green dye to double-stranded products was applied herein. DHBV genomic DNA cloned in a plasmid was used for the generation of standard DHBV DNA for quantitative PCR. It validated results from PCR in terms of the copy number of DHBV particles. The specificity of PCR was demonstrated by melting curve analysis, and the differentiation of two DHBV isolates amplified from dried serum was demonstrated based on their melting temperatures determined by GC contents and sequence. It was easier and simpler than other PCR-based DNA techniques. The use of serum dried on filters allows samples from distant field for which cold storage and transportation are a problem to be mailed to the diagnostic laboratory. Samples can be archived for comparison and used as a source of DNA for cloning and sequencing.
Related Links	http://dx.doi.org/10.1128/jcm.40.7.2584-2590.2002
Ending Page	2590
Page Count	7
Starting Page	2584
File Format	PDF
ISSN	00951137
e-ISSN	1098660X
Journal	Journal of Clinical Microbiology
Issue Number	7
Volume Number	40
Language	English
Publisher	American Society for Microbiology
Publisher Date	2002-07-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Microbiology (medical) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Microbiology (medical)

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