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A reverse-transcription competitive PCR assay based on chemiluminescence hybridization for detection and quantification of hepatitis C virus RNA.

Abstract：

:A reverse-transcription competitive PCR (RT-cPCR) combined with chemiluminescence hybridization was designed for the detection and quantitative determination of serum hepatitis C virus (HCV) RNA. The concentration of HCV RNA was calculated based on an external standard curve that was generated by coamplification of internal competitor and target sequences in serial dilutions. The detection limit of the chemiluminescence RT-cPCR was 100 copies/ml (94 IU/ml). Meanwhile, the linear range for quantitation extended from 850 copies/ml (795 IU/ml) to 4.95x10(7) copies/ml. The performance of the current assay for measuring circulating HCV levels from 26 anti-HCV-antibody positive patients was compared with that of branched-chain DNA (bDNA) and nested RT-PCR assays. Eighteen patients had HCV RNA levels that exceeded the quantitation limit by the chemiluminescence RT-cPCR, but only 11 patients were quantitation-positive by the bDNA. A significant correlation of the quantitation values was found between the chemiluminescence RT-cPCR and the bDNA (R2=0.8391). Among the eight patients with HCV RNA titers below the quantitation limit, four remained positive by the chemiluminescence cRT-PCR, demonstrating the results in agreement with those using the nested RT-PCR. Furthermore, good linearity was revealed for the HCV genotypes 1b, 2a, 2b in 3-order magnitude diluted serum samples. In conclusion, the proposed chemiluminescence RT-cPCR method can detect quantitatively HCV RNA as accurately as the bDNA method and has sensitivity as high as nested RT-PCR.

journal_name

J Virol Methods

journal_title

Journal of virological methods

authors

Young KC,Chang TT,Hsiao WC,Cheng PN,Chen SH,Jen CM

doi

10.1016/s0166-0934(01)00403-7

subject

Has Abstract

pub_date

2002-05-01 00:00:00

pages

27-39

issue

1

eissn

0166-0934

issn

1879-0984

pii

S0166093401004037

journal_volume

103

pub_type

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