Variability of Human Immunodeficiency Virus Type 2 (HIV-2) Infecting Patients Living in France
Identifieur interne : 001096 ( Main/Curation ); précédent : 001095; suivant : 001097Variability of Human Immunodeficiency Virus Type 2 (HIV-2) Infecting Patients Living in France
Auteurs : Florence Damond [France] ; Cristian Apetrei [Gabon] ; David L. Robertson [France] ; Sandrine Souquière [Gabon] ; Annie Leprêtre [France] ; Sophie Matheron [France] ; Jc Plantier [France] ; Françoise Brun-Vézinet [France] ; François Simon [France]Source :
- Virology [ 0042-6822 ] ; 2001.
Descripteurs français
English descriptors
- KwdEn :
- African patients, Amino, Amino acid sequences, Amino acids, Amplification, Binding site, Bissau, Burkina faso, Cape verde, Cape verde islands, Cell counts, Charles nicolle, Cote lancet, Country codes, Damond, Different strains, Different subtypes, Disease control, Dual infection, Dual reactivity, Epidemiological differences, French cohort, French patients, Fresh pbmcs, Genetic diversity, Glycoprotein, Guinea bissau, Guinea bissau strains, Horizontal branches lengths, Human immunodeficiency virus type, Immunodeficiency, Immunodominant, Immunodominant domain, Immunodominant region, Ivory coast, Last extension step, Little loop, Loop peptides, Mali, Matheron, Mutation, Natural history, Nonhuman primates, Nucleotide sequences, Optical density, Peptide, Peptides mapping, Percent bootstraps, Phylogenetic, Phylogenetic analysis, Phylogenetic relationships, Phylogenetic trees, Primer, Primer pairs, Probable place, Putative recombinants, Room temperature, Screening assay, Screening tests, Senegal, Sequence alignment, Sequence database, Sequence names, Serological consequences, Significant differences, Simian immunodeficiency virus, Sivagm, Sivmnd, Sivmnd peptide, Sivsm, Sooty mangabeys, Subtype, Subtypes, Symptomatic patients, Transmembrane glycoprotein, Variability, Verde, Vertical separation, Viral, Viral diversity, Virol, Virological, Virological characteristics, Vivo pathogenicity, West africa, Western blot, Window length.
- Teeft :
- African patients, Amino, Amino acid sequences, Amino acids, Amplification, Binding site, Bissau, Burkina faso, Cape verde, Cape verde islands, Cell counts, Charles nicolle, Cote lancet, Country codes, Damond, Different strains, Different subtypes, Disease control, Dual infection, Dual reactivity, Epidemiological differences, French cohort, French patients, Fresh pbmcs, Genetic diversity, Glycoprotein, Guinea bissau, Guinea bissau strains, Horizontal branches lengths, Human immunodeficiency virus type, Immunodeficiency, Immunodominant, Immunodominant domain, Immunodominant region, Ivory coast, Last extension step, Little loop, Loop peptides, Mali, Matheron, Mutation, Natural history, Nonhuman primates, Nucleotide sequences, Optical density, Peptide, Peptides mapping, Percent bootstraps, Phylogenetic, Phylogenetic analysis, Phylogenetic relationships, Phylogenetic trees, Primer, Primer pairs, Probable place, Putative recombinants, Room temperature, Screening assay, Screening tests, Senegal, Sequence alignment, Sequence database, Sequence names, Serological consequences, Significant differences, Simian immunodeficiency virus, Sivagm, Sivmnd, Sivmnd peptide, Sivsm, Sooty mangabeys, Subtype, Subtypes, Symptomatic patients, Transmembrane glycoprotein, Variability, Verde, Vertical separation, Viral, Viral diversity, Virol, Virological, Virological characteristics, Vivo pathogenicity, West africa, Western blot, Window length.
Abstract
To determine the prevalence of human immunodeficiency virus type 2 (HIV-2) subtypes circulating in France and to identify possible relationships between these subtypes and pathogenesis, we studied 33 HIV-2-infected patients living in France. HIV-2 DNA was directly amplified from peripheral blood mononuclear cells by nested PCR with specific HIV-2 env primers, and the env gene was sequenced. The serological consequences of antigenic variability were studied by using a panel of peptides and by Western blotting. Phylogenetic analysis classified the 33 HIV-2 strains as subtype A (n = 23) or B (n = 10). There were no significant clinical or epidemiological differences between patients infected with either of these two subtypes. There was some evidence for geographical clustering. Subtype A strains from patients originating from the Cape Verde Islands and Guinea Bissau clustered together. The majority of patients infected with subtype B strains originated from the Ivory Coast or Mali. Strains from patients originating in Mali also clustered in subtype A but distinctly from the Cape Verde or Guinea Bissau strains. The subtype B strains showed greater diversity and included some highly divergent strains relative to those previously characterized. The V3 loop of HIV-2 subtypes A and B was found to be quite conserved in comparison with HIV-1. A strong HIV-2 subtype B serological cross-reactivity was found on HIV-1 env antigen by Western blot mostly in the gp41 transmembrane glycoprotein. This could partly explain the double HIV-1 and HIV-2 reactive profiles found in countries where HIV-2 subtype B is prevalent.
Url:
DOI: 10.1006/viro.2000.0685
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<term>Amino acids</term>
<term>Amplification</term>
<term>Binding site</term>
<term>Bissau</term>
<term>Burkina faso</term>
<term>Cape verde</term>
<term>Cape verde islands</term>
<term>Cell counts</term>
<term>Charles nicolle</term>
<term>Cote lancet</term>
<term>Country codes</term>
<term>Damond</term>
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<term>Dual infection</term>
<term>Dual reactivity</term>
<term>Epidemiological differences</term>
<term>French cohort</term>
<term>French patients</term>
<term>Fresh pbmcs</term>
<term>Genetic diversity</term>
<term>Glycoprotein</term>
<term>Guinea bissau</term>
<term>Guinea bissau strains</term>
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<term>Immunodeficiency</term>
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<term>Immunodominant region</term>
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<term>Last extension step</term>
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<term>Loop peptides</term>
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<term>Natural history</term>
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<term>Phylogenetic trees</term>
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<term>Room temperature</term>
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<term>Significant differences</term>
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<term>Sivagm</term>
<term>Sivmnd</term>
<term>Sivmnd peptide</term>
<term>Sivsm</term>
<term>Sooty mangabeys</term>
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<term>Subtypes</term>
<term>Symptomatic patients</term>
<term>Transmembrane glycoprotein</term>
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<term>Verde</term>
<term>Vertical separation</term>
<term>Viral</term>
<term>Viral diversity</term>
<term>Virol</term>
<term>Virological</term>
<term>Virological characteristics</term>
<term>Vivo pathogenicity</term>
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<term>Amino acid sequences</term>
<term>Amino acids</term>
<term>Amplification</term>
<term>Binding site</term>
<term>Bissau</term>
<term>Burkina faso</term>
<term>Cape verde</term>
<term>Cape verde islands</term>
<term>Cell counts</term>
<term>Charles nicolle</term>
<term>Cote lancet</term>
<term>Country codes</term>
<term>Damond</term>
<term>Different strains</term>
<term>Different subtypes</term>
<term>Disease control</term>
<term>Dual infection</term>
<term>Dual reactivity</term>
<term>Epidemiological differences</term>
<term>French cohort</term>
<term>French patients</term>
<term>Fresh pbmcs</term>
<term>Genetic diversity</term>
<term>Glycoprotein</term>
<term>Guinea bissau</term>
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<term>Immunodominant region</term>
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<term>Loop peptides</term>
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<term>Matheron</term>
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<term>Natural history</term>
<term>Nonhuman primates</term>
<term>Nucleotide sequences</term>
<term>Optical density</term>
<term>Peptide</term>
<term>Peptides mapping</term>
<term>Percent bootstraps</term>
<term>Phylogenetic</term>
<term>Phylogenetic analysis</term>
<term>Phylogenetic relationships</term>
<term>Phylogenetic trees</term>
<term>Primer</term>
<term>Primer pairs</term>
<term>Probable place</term>
<term>Putative recombinants</term>
<term>Room temperature</term>
<term>Screening assay</term>
<term>Screening tests</term>
<term>Senegal</term>
<term>Sequence alignment</term>
<term>Sequence database</term>
<term>Sequence names</term>
<term>Serological consequences</term>
<term>Significant differences</term>
<term>Simian immunodeficiency virus</term>
<term>Sivagm</term>
<term>Sivmnd</term>
<term>Sivmnd peptide</term>
<term>Sivsm</term>
<term>Sooty mangabeys</term>
<term>Subtype</term>
<term>Subtypes</term>
<term>Symptomatic patients</term>
<term>Transmembrane glycoprotein</term>
<term>Variability</term>
<term>Verde</term>
<term>Vertical separation</term>
<term>Viral</term>
<term>Viral diversity</term>
<term>Virol</term>
<term>Virological</term>
<term>Virological characteristics</term>
<term>Vivo pathogenicity</term>
<term>West africa</term>
<term>Western blot</term>
<term>Window length</term>
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<front><div type="abstract" xml:lang="en">To determine the prevalence of human immunodeficiency virus type 2 (HIV-2) subtypes circulating in France and to identify possible relationships between these subtypes and pathogenesis, we studied 33 HIV-2-infected patients living in France. HIV-2 DNA was directly amplified from peripheral blood mononuclear cells by nested PCR with specific HIV-2 env primers, and the env gene was sequenced. The serological consequences of antigenic variability were studied by using a panel of peptides and by Western blotting. Phylogenetic analysis classified the 33 HIV-2 strains as subtype A (n = 23) or B (n = 10). There were no significant clinical or epidemiological differences between patients infected with either of these two subtypes. There was some evidence for geographical clustering. Subtype A strains from patients originating from the Cape Verde Islands and Guinea Bissau clustered together. The majority of patients infected with subtype B strains originated from the Ivory Coast or Mali. Strains from patients originating in Mali also clustered in subtype A but distinctly from the Cape Verde or Guinea Bissau strains. The subtype B strains showed greater diversity and included some highly divergent strains relative to those previously characterized. The V3 loop of HIV-2 subtypes A and B was found to be quite conserved in comparison with HIV-1. A strong HIV-2 subtype B serological cross-reactivity was found on HIV-1 env antigen by Western blot mostly in the gp41 transmembrane glycoprotein. This could partly explain the double HIV-1 and HIV-2 reactive profiles found in countries where HIV-2 subtype B is prevalent.</div>
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