Le SIDA au Ghana (serveur d'exploration)

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Molecular epidemiology of HIV in Ghana: Dominance of CRF02_AG

Identifieur interne : 000F49 ( Main/Exploration ); précédent : 000F48; suivant : 000F50

Molecular epidemiology of HIV in Ghana: Dominance of CRF02_AG

Auteurs : Lucia Fischetti [Royaume-Uni] ; Ohene Opare-Sem [Ghana] ; Daniel Candotti [Royaume-Uni] ; Francis Sarkodie [Ghana] ; Helen Lee [Royaume-Uni] ; Jean Pierre Allain [Royaume-Uni]

Source :

RBID : ISTEX:BEDA12C23AA0858C475661CF3A8D230FF53EADD5

Descripteurs français

English descriptors

Abstract

Recent studies showed the importance of CRF02_AG in West Africa, although the clinical relevance of these recombinant forms of HIV remains unknown. The present study aimed at determining the molecular diversity of HIV in Ghana and investigating the possible epidemiologic advantage of recombinant HIV‐1. Plasma samples collected in 1999–2002 from two populations of HIV infected individuals (144 asymptomatic candidate blood donors and 169 AIDS patients) were studied and 249 of them were molecularly characterised in gag, pol, and env regions. Five molecular groups were identified: strains clustering with CRF02_AG in all regions (147/249 or 59%), recombinant strains clustering with CRF02_AG in one or two regions (50/249 or 20%), other subtypes, pure or recombinant, but not involving CRF02_AG (37/249 or 15%), HIV‐2 (11/249 or 4.5%), and double infections (4/249 or 1.5%). There was no significant difference in the distribution of HIV‐1 recombinant strains according to clinical presentation. No evidence of a significant increase in CRF02_AG prevalence between 1999 and 2002 was found. Irrespective of clinical condition, CRF02_AG is the predominant molecular form of HIV‐1 in Kumasi, Ghana. J. Med. Virol. 73:158–166, 2004. © 2004 Wiley‐Liss, Inc.

Url:
DOI: 10.1002/jmv.20070


Affiliations:


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<term>Asymptomatic candidate blood donors</term>
<term>Asymptomatic candidate donors</term>
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<term>Clinical aids</term>
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<term>Cluster Analysis</term>
<term>Cornelissen</term>
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<term>Janssens</term>
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<term>Molecular groups</term>
<term>Montavon</term>
<term>Nucleic acid</term>
<term>Outer primers</term>
<term>Peeters</term>
<term>Phylogenetic</term>
<term>Phylogenetic analysis</term>
<term>Phylogeny</term>
<term>Present study</term>
<term>Primer</term>
<term>Protease gene</term>
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<term>Recombinant form</term>
<term>Recombinant forms</term>
<term>Recombinant strains</term>
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<term>Recombination, Genetic</term>
<term>Reference strains</term>
<term>Retrovirus</term>
<term>Reverse Transcriptase Polymerase Chain Reaction</term>
<term>Sample collection</term>
<term>Second round</term>
<term>Sequence Analysis, DNA</term>
<term>Sequencing</term>
<term>Subtype</term>
<term>Subtypes</term>
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<term>Vergne</term>
<term>Viral</term>
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<term>West africa</term>
<term>West african countries</term>
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<term>Adulte</term>
<term>Adulte d'âge moyen</term>
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<term>Analyse de séquence d'ADN</term>
<term>Données de séquences moléculaires</term>
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<term>Gènes pol</term>
<term>Gènes viraux</term>
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<term>Phylogénie</term>
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<div type="abstract" xml:lang="en">Recent studies showed the importance of CRF02_AG in West Africa, although the clinical relevance of these recombinant forms of HIV remains unknown. The present study aimed at determining the molecular diversity of HIV in Ghana and investigating the possible epidemiologic advantage of recombinant HIV‐1. Plasma samples collected in 1999–2002 from two populations of HIV infected individuals (144 asymptomatic candidate blood donors and 169 AIDS patients) were studied and 249 of them were molecularly characterised in gag, pol, and env regions. Five molecular groups were identified: strains clustering with CRF02_AG in all regions (147/249 or 59%), recombinant strains clustering with CRF02_AG in one or two regions (50/249 or 20%), other subtypes, pure or recombinant, but not involving CRF02_AG (37/249 or 15%), HIV‐2 (11/249 or 4.5%), and double infections (4/249 or 1.5%). There was no significant difference in the distribution of HIV‐1 recombinant strains according to clinical presentation. No evidence of a significant increase in CRF02_AG prevalence between 1999 and 2002 was found. Irrespective of clinical condition, CRF02_AG is the predominant molecular form of HIV‐1 in Kumasi, Ghana. J. Med. Virol. 73:158–166, 2004. © 2004 Wiley‐Liss, Inc.</div>
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<name sortKey="Sarkodie, Francis" sort="Sarkodie, Francis" uniqKey="Sarkodie F" first="Francis" last="Sarkodie">Francis Sarkodie</name>
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