A study on genotypes of hepatitis B virus among hemodialysis patients in Khuzestan province

Niloofar Neisi; Manochehr Makvandi; Ali Reza Samarbaf-Zadeh

Jundishapur Journal of Microbiology

Ahvaz Jundishapur University of Medical Sciences

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A study on genotypes of hepatitis B virus among hemodialysis patients in Khuzestan province

Author(s):

Niloofar Neisi

^1,*,

Manochehr Makvandi²,

Ali Reza Samarbaf-Zadeh²

1Department of Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, [email protected], Iran

2Department of Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Iran

Jundishapur Journal of Microbiology:Vol. 4, issue 2

Published online:Apr 30, 2011

Article type:Research Article

How to Cite:Neisi N, Makvandi M, Samarbaf-Zadeh AR. A study on genotypes of hepatitis B virus among hemodialysis patients in Khuzestan province. Jundishapur J Microbiol. 2011;4(2):. doi:

Abstract

Introduction and objective: Hepatitis B virus (HBV) is a member of Hepadnaviridae and a major causative agent of chronic and acute hepatitis, liver cirrhosis and hepatocellular carcinoma. Genotype determination of HBV is based on PCR-RFLP and sequencing of genome of the virus. The genotype formation is mainly due to mutations of HBV precore, S, and YMDD (tyrosine-methionine-aspartate-aspartate motif in the C domain of the HBV DNA polymerase gene) genome area. Moreover, some of the mutant HBV remains undetectable by serological tests (occult hepatitis). Since the genotypes of HBV and occult hepatitis B has not been studied in our area, this study was conducted to determine both occult hepatitis B infection and genotypes among hemodialysis patients.

Materials and methods: Two hundred and fifty hemodialysis patients were selected in this study. The sera of the patients were collected and the extracted DNA was used as template of PCR to amplify a 479bp fragment of the viral genome. The PCR products were digested by Ava2 and Mbo1 restriction enzymes. Based on RFLP patterns, the genotypes were determined. The HBV markers including; HBV surface antigen (HBsAg), hepatitis Bc antibody (HBcIgG), hepatitis B virus e antigen (HBeAg) and hepatitis B virus e antibody (HBeAb) were carried out for all the patients by ELISA test.

Results: Fifty (20%) out of 250 sera showed positive HBV by PCR. Out of the 50 positive cases for HBV, 46(92%) belonged to genotype D2 and 2(4%) cases of them were B6 genotype. Ten cases were positive for HBV by PCR test but negative by ELISA test (4% occult hepatitis).

Conclusion: Prevalence of HBV infection was high among the dialysis patients (20%), and occult hepatitis B was 4% in these patients. The dominant genotype of HBV was D2 (92%) followed by genotypes B6 (4%) in hemodialysis patients.

Keywords

Hepatitis B virus (HBV)

Hemodialysis

Genotyping

RFLP

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Molecular Characterization of Pre-Core/Core and S Region of Hepatitis B Virus in Hemodialysis Patients With Occult Hepatitis B Infection

Nasrin Rastegarvand,

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,et al.

Rastegarvand N, Makvandi M, Samarbafzadeh A, Rasti M, Neisi N, et al. Molecular Characterization of Pre-Core/Core and S Region of Hepatitis B Virus in Hemodialysis Patients With Occult Hepatitis B Infection. Jundishapur J Microbiol. 2015;8(10):e23686. doi: https://doi.org/10.5812/jjm.23686

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Author(s):

Niloofar Neisi:[PubMed][Scholar]
Manochehr Makvandi:[PubMed][Scholar]
Ali Reza Samarbaf-Zadeh:[PubMed][Scholar]

Ahvaz Jundishapur University of Medical Sciences

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A study on genotypes of hepatitis B virus among hemodialysis patients in Khuzestan province

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