Phylogenetic analysis of Brazilian HIV type 1 subtype D strains: tracing the origin of this subtype in Brazil

AIDS Res Hum Retroviruses. 2006 Feb;22(2):207-11. doi: 10.1089/aid.2006.22.207.

Abstract

HIV-1 Subtype D occurs mainly in East and Central African countries, especially Uganda, where the prevalence of HIV-1 infection is among the highest in the world. We present the phylogenetic analysis of one nonautochthonous and four autochthonous (including a near full-length genome) Brazilian HIV-1 subtype D strains identified in Rio de Janeiro State, where subtypes B, F1, and BF1 recombinants predominate. Phylogenetic inferences using maximum likelihood were applied on a near-full length genome and on concatenated gag, protease, reverse transcriptase, integrase, C2V3/env, gp41, and nef segments. Sequences from an Angolan immigrant showed close genetic similarity with a strain described in Finland, from an HIV patient of African origin, whereas all four autochthonous Brazilian sequences clustered with South African strains, where subtype D occurs only in isolated cases. Our results suggest the successful introduction and circulation in Brazil of closely related HIV-1 subtype D strains, possibly of South African origin.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Brazil
  • Genes, nef
  • Genome, Viral
  • HIV Envelope Protein gp41 / genetics
  • HIV Protease / genetics
  • HIV Reverse Transcriptase / genetics
  • HIV-1 / classification*
  • HIV-1 / genetics
  • Integrases / genetics
  • Likelihood Functions
  • Molecular Sequence Data
  • Phylogeny*

Substances

  • HIV Envelope Protein gp41
  • Integrases
  • HIV Reverse Transcriptase
  • HIV Protease

Associated data

  • GENBANK/DQ138968
  • GENBANK/DQ138969
  • GENBANK/DQ138970
  • GENBANK/DQ138971
  • GENBANK/DQ138972
  • GENBANK/DQ138973
  • GENBANK/DQ138974
  • GENBANK/DQ138975
  • GENBANK/DQ138976
  • GENBANK/DQ138977
  • GENBANK/DQ138978
  • GENBANK/DQ138979
  • GENBANK/DQ138980
  • GENBANK/DQ138981
  • GENBANK/DQ138982
  • GENBANK/DQ138983
  • GENBANK/DQ138984
  • GENBANK/DQ141202
  • GENBANK/DQ141203
  • GENBANK/DQ141204
  • GENBANK/DQ141205
  • GENBANK/DQ141206
  • GENBANK/DQ141207
  • GENBANK/DQ141208
  • GENBANK/DQ141209
  • GENBANK/DQ141210