Quantitation of Hepatitis B Virus Genomic DNA by Real-Time Detection PCR

Author:

Abe Aki1,Inoue Kazuaki23,Tanaka Takeshi4,Kato Junko25,Kajiyama Naoki1,Kawaguchi Ryuji1,Tanaka Satoshi4,Yoshiba Makoto3,Kohara Michinori2

Affiliation:

1. Center for Molecular Biology and Cyotogenesis, SRL, Inc., Hino Tokyo 192-0002,1

2. Department of Microbiology, The Tokyo Metropolitan Institute of Medical Science,2 and

3. Division of Gastroenterology, Showa University Fujigaoka Hospital, Aoba-ku, Yokohama 227-8501,3 and

4. Liver Unit, The Tokyo Metropolitan Komagome Hospital,4Bunkyo-ku, Tokyo 113-8613,

5. Institute of Gastroenterology, Tokyo Women’s Medical College, Shinjiyuku-ku, Tokyo 162-0054,5 Japan

Abstract

ABSTRACT Quantitation of hepatitis B virus (HBV) DNA in serum is a useful method for the monitoring of HBV replication. We attempted to develop a quantitative assay system for HBV DNA that is more sensitive, accurate, and reproducible than existing systems. We detected HBV DNA by real-time detection PCR (RTD-PCR) based on Taq Man chemistry. The efficacy of this assay was evaluated by quantitatively measuring sequential levels of synthetic DNA and DNA in clinical serum samples. The detection limit of this system was as few as 10 DNA copies/reaction. A linear standard curve was obtained between 10 1 and 10 8 DNA copies/reaction. The coefficient of variation for both intra- and interexperimental variability indicated remarkable reproducibility. This system detected HBV DNA in 100% of chronic hepatitis B patients tested and never detected HBV DNA in healthy volunteers who were negative for HBV markers. These observations suggest that RTD-PCR is an excellent candidate for a standard HBV quantification method.

Publisher

American Society for Microbiology

Subject

Microbiology (medical)

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3. Gerlich W. H. Thomssen R. Terminology structure and laboratory diagnosis of hepatitis viruses Oxford Textbook of clinical hepatology. McIntyre N. Benhamou J.-P. Bircher J. Rizzetto M. Rodes J. 1991 537 565 Oxford University Press Oxford United Kingdom

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5. Real time quantitative PCR;Heid C. A.;Genome Res.,1996

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