Characterization of hepatitis B virus mutations in untreated patients co-infected with HIV and HBV based on complete genome sequencing

Co‐infection of HBV with HIV results in an accelerated course of HBV‐associated chronic liver disease. Several studies have shown that viral mutations are related to disease progression in mono‐infection with HBV. However, it is unclear whether HBV mutation patterns might differ between co‐infected...

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Bibliographic Details
Published in:Journal of medical virology 2013-01, Vol.85 (1), p.16-25
Main Authors: Tangkijvanich, Pisit, Sa-Nguanmoo, Pattaratida, Avihingsanon, Anchalee, Ruxrungtham, Kiat, Poovorawan, Kittiyod, Poovorawan, Yong
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Coinfection - virology
DNA, Viral - blood
DNA, Viral - chemistry
DNA, Viral - genetics
Female
Fundamental and applied biological sciences. Psychology
genome sequencing
Genome, Viral
Genomics
Genotype
genotypes
Hepatitis
Hepatitis B - complications
Hepatitis B - virology
Hepatitis B virus
Hepatitis B virus - genetics
Hepatitis B virus - isolation & purification
HIV
HIV Infections - complications
Human immunodeficiency virus
Human viral diseases
Humans
Infectious diseases
Male
Medical sciences
Microbiology
Miscellaneous
Molecular Sequence Data
Mutation
Mutation Rate
mutations
Pathogenesis
recombination
Sequence Analysis, DNA
Viral diseases
Viral Load
Virology
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Summary:Co‐infection of HBV with HIV results in an accelerated course of HBV‐associated chronic liver disease. Several studies have shown that viral mutations are related to disease progression in mono‐infection with HBV. However, it is unclear whether HBV mutation patterns might differ between co‐infected and mono‐infected patients. To compare the frequencies and mutation patterns in the HBV genome between co‐infection and mono‐infection. Twenty‐four treatment‐naïve co‐infected and 31 treatment‐naïve mono‐infected Thai patients were included. HBV mutations were characterized by whole genome sequencing of virus serum samples. The clinical features and frequency of known clinically significant mutations were compared between the two groups. No significant difference between the groups was found with respect to sex, age and HBeAg. However, HBV DNA levels were significantly higher in co‐infected patients. The distribution of HBV genotypes was comparable between the two groups and restricted mostly to sub‐genotypes C1 and B2. An isolate with recombinants of genotypes G/C1 was also identified in a patient with co‐infection. There was no difference in the prevalence of mutations in the enhancer II/basal core promoter/precore region, pre‐S/S and polymerase genes between the two groups. In conclusion, dual infections tend to engender increased HBV DNA levels. There was no major difference in the frequencies of common HBV mutations between co‐infected and mono‐infected patients. Thus, HBV mutations may not contribute to disease pathogenesis in Thai patients with co‐infection. J. Med. Virol. 85:16–25, 2012. © 2012 Wiley Periodicals, Inc.
ISSN:0146-6615
1096-9071
DOI:10.1002/jmv.23430