Heterogeneous nature of HIV-1 recombinants spreading in Spain.

Abstract:

:HIV-1 infections due to non-B subtypes are increasing rapidly in number and spreading across Europe. The genetic nature of HIV-1 non-B variants containing subtype G sequences at the protease (PR)-coding region are described from 48 unrelated subjects living in Spain. Phylogenetic analyses of the HIV-1 reverse transcriptase (RT) and envelope (env) genes (including the V3 loop) were performed. Up to 32 (66.6%) of samples carried inter-subtype recombinant viruses. Although double recombinants were found most frequently (G/A in 20; G/B in 8; G/K in 2), two individuals harbored triple recombinant viruses (GPR/BRT/Aenv and GPR/KRT/Aenv, respectively). Only 33 (68.7%) and 9 (18.7%) sequences clustered with clade G when examining the RT and env genes, respectively. Nearly 70% of samples with pol sequences (PR/RT) belonging to subtype G harbored env sequences ascribed to other clades: A (55.6%), B (11.1%), or K (3.7%). Of note, most recombinant viruses clustered with CRF02_AG, although CRF14_BG recombinants were also found. This study demonstrates that most viruses circulating in Spain with clade G sequences at the pol-coding region are in fact inter-subtype recombinants, with CRF02_AG being the most prevalent virus.

journal_name

J Med Virol

authors

Holguín A,Alvarez A,Soriano V

doi

10.1002/jmv.20280

keywords:

subject

Has Abstract

pub_date

2005-03-01 00:00:00

pages

374-80

issue

3

eissn

0146-6615

issn

1096-9071

journal_volume

75

pub_type

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