Abstract:
BACKGROUND:Hepatitis B virus (HBV) can be classified into nine genotypes (A-I) defined by sequence divergence of more than 8% based on the complete genome. This study aims to identify the genotypic distribution of HBV in 40 HBsAg-positive patients from Rondônia, Brazil. A fragment of 1306 bp partially comprising surface and polymerase overlapping genes was amplified by PCR. Amplified DNA was purified and sequenced. Amplified DNA was purified and sequenced on an ABI PRISM® 377 Automatic Sequencer (Applied Biosystems, Foster City, CA, USA). The obtained sequences were aligned with reference sequences obtained from the GenBank using Clustal X software and then edited with Se-Al software. Phylogenetic analyses were conducted by the Markov Chain Monte Carlo (MCMC) approach using BEAST v.1.5.3. RESULTS:The subgenotypes distribution was A1 (37.1%), D3 (22.8%), F2a (20.0%), D4 (17.1%) and D2 (2.8%). CONCLUSIONS:These results for the first HBV genotypic characterization in Rondônia state are consistent with other studies in Brazil, showing the presence of several HBV genotypes that reflects the mixed origin of the population, involving descendants from Native Americans, Europeans, and Africans.
journal_name
Virol Jjournal_title
Virology journalauthors
Santos AO,Alvarado-Mora MV,Botelho L,Vieira DS,Pinho JR,Carrilho FJ,Honda ER,Salcedo JMdoi
10.1186/1743-422X-7-315subject
Has Abstractpub_date
2010-11-12 00:00:00pages
315issn
1743-422Xpii
1743-422X-7-315journal_volume
7pub_type
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