## Abstract To understand when the mutation with a stop codon of precore region in hepatitis B virus genome occurs, the prevalence of the mutation of viral DNA clones propagated from sera of schoolβage carriers was investigated with respect to hepatitis B e antigen (HBeAg)/antiβHBe and sequential c
Nucleic acid sequence analysis of the precore region of hepatitis B virus from sera of southern African black adult carriers of the virus
β Scribed by A. Kramvis; S. Bukofzer; M. C. Kew; E. Song
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 281 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0270-9139
No coin nor oath required. For personal study only.
β¦ Synopsis
HBV-DNA Quantitation in Serum. For quantitation of HBV DNA HBeAg is water soluble and enters the serum. 2 in serum, the Digene Hybrid Capture System (Digene Diagnostics,
The presence of HBeAg in the serum of hepatitis B surface Inc., Beltsville, MD), a chemiluminescent molecular hydridization antigen-positive patients is conventionally considered to be assay was used, according to the manufacturer's instructions. A slot blot hybridization assay, using the method of Scotto et al., 25 was run in parallel. Briefly, 50 mL of serum were diluted with 50 mL of 2 mol/ L NaCl, denatured with 100 mL 1 mol/L NaOH, and blotted onto Abbreviations: HBV, hepatitis B virus; HBeAg, hepatitis B e antigen; anti-HBe, hepatitis B e antigen antibody; PCR, polymerase chain reaction. QIABRANE nylon mebrane (Qiagen Inc., Hilden, Germany) using From the Medical Research Council/University of the Witwatersrand Molecular Hepatol-the Bio-Dot R SF microfiltration apparatus (BioLab Laboratories,
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Hepatitis B virus (HBV) genotypes have distinct geographical distribution. HBV sequences among hepatitis B carriers in Malawi have not been evaluated thus far. HBsAg serotype and genotype of HBV was determined in 20 serum samples from Malawian chronic HBV carriers, and two complete genomes and 13 en
## Abstract Sera from 20 Chinese patients with chronic hepatitis B were examined for hepatitis B e antigen and hepatitis B virus (HBV) DNA. There was considerable discordance with HBV DNA not being detectable in 10 out of 13 (77%) patients who were hepatitis B e antigen positive. Further testing fo
The nucleotide sequences of the core upstream and precore regions (371 nucleotide length, nt. 1604-1974) of hepatitis B virus (HBV) were analysed sequentially in three subjects who were positive serorogically for anti-HBe and had acute clinical exacerbation after immunosuppressive treatment. These p
Serum samples from 20 anti-hepatitis B e antigenpositive patients with and without normal alanine aminotransferase (ALT) levels who had serum hepatitis B virus (HBV) DNA detectable only by polymerase chain reation (PCR) were examined. Viral DNA was amplified by PCR, using primers that encompassed pr