TITLE

Application of real-time PCR to quantify hepatitis B virus DNA in chronic carriers in The Gambia

AUTHOR(S)
Mendy, Maimuna E.; Kaye, Steve; Van Der Sande, Marianne; Rayco-Solon, Pura; Waight, Pauline A.; Shipton, Deborah; Awi, Dorka; Snell, Paul; Whittle, Hilton; McConkey, Samuel J.
PUB. DATE
January 2006
SOURCE
Virology Journal;2006, Vol. 3, p23
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background/Aim: The study aimed at developing a real-time quantitative PCR assay to monitor HBV serum virus load of chronic carriers enrolled in therapeutic trials. Method: Quantitative real-time PCR assay was carried out using SYBR-Green signal detection and primers specific to the S gene. Thermal cycling was performed in an ABi 5700 sequence detection system. The assay was calibrated against an international HBV DNA standard and inter- and intraassay reproducibility determined. Levels of viral load were monitored for 1-year in lamivudine treated carriers. Correlation between HBV DNA levels and HBeAg sero-status was determined in untreated carriers. Results: The qPCR assay showed good intra- and inter-assay reproducibility over a wide dynamic range (1.5 × 103 to 1.5 × 108 copies/mL) and correlated well with those from a commercial assay (r = 0.91, (p < 0.001). Viral load levels dropped dramatically but temporarily during and after a short course of lamivudine therapy. HBV DNA was a more reliable indicator of the presence of virus than HBe antigen and was detected in 77.0% (161/209) of HBeAg negative and in all HBeAg positive carriers. Conclusion: This method is reliable, accurate, and reproducible. HBV DNA Quantification by qPCR can be used to monitor the efficacy of HBV therapy and useful in understanding the natural history of HBV in an endemic area.
ACCESSION #
30746138

 

Related Articles

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics