A real-time quantitative assay for hepatitis B DNA virus (HBV) developed to detect all HBV genotypes

Revista do Instituto de Medicina Tropical de São Paulo

Roberta Sitnik²  Ângela Paes¹  Cristovão Pitangueira Mangueira²  João Renato Rebello Pinho² 

[1] ,Hospital Israelita Albert Einstein Departamento de Patologia Clínica São Paulo SP ,Brasil

关键词: HBV DNA quantification;    Real Time PCR;    Hepatitis B virus;    Viral load;   

DOI  :  10.1590/S0036-46652010000300001

来源: SciELO

【 摘 要 】

Hepatitis B virus (HBV) is a major cause of chronic liver disease worldwide. Besides genotype, quantitative analysis of HBV infection is extensively used for monitoring disease progression and treatment. Affordable viral load monitoring is desirable in resource-limited settings and it has been already shown to be useful in developing countries for other viruses such as Hepatitis C virus (HCV) and HIV. In this paper, we describe the validation of a real-time PCR assay for HBV DNA quantification with TaqMan chemistry and MGB probes. Primers and probes were designed using an alignment of sequences from all HBV genotypes in order to equally amplify all of them. The assay is internally controlled and was standardized with an international HBV panel. Its efficacy was evaluated comparing the results with two other methods: Versant HBV DNA Assay 3.0 (bDNA, Siemens, NY, USA) and another real-time PCR from a reference laboratory. Intra-assay and inter-assay reproducibilities were determined and the mean of CV values obtained were 0.12 and 0.09, respectively. The assay was validated with a broad dynamic range and is efficient for amplifying all HBV genotypes, providing a good option to quantify HBV DNA as a routine procedure, with a cheap and reliable protocol.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License