Defining the human immunodeficiency virus type 1 transmission genetic bottleneck in a region with multiple circulating subtypes and recombinant forms

被引:9
作者
Nofemela, Andile [1 ]
Bandawe, Gama [1 ]
Thebus, Ruwayhida [1 ]
Marais, Jinny [1 ]
Wood, Natasha
Hoffmann, Oliver [4 ]
Maboko, Leonard [3 ]
Hoelscher, Michael [3 ,4 ]
Woodman, Zenda [2 ]
Williamson, Carolyn [1 ]
机构
[1] Univ Cape Town, Inst Infect Dis & Mol Med, Div Med Virol, Fac Hlth Sci, ZA-7925 Observatory, South Africa
[2] Univ Cape Town, Dept Mol & Cell Biol, ZA-7925 Cape Town, South Africa
[3] Minist Hlth, NIMR Mbeya Med Res Programme, Mbeya, Tanzania
[4] Klinikum Ludwig Maximilians Univ, Dept Infect Dis & Trop Med, Munich, Germany
关键词
HIV; Genetic variability; Transmission; Bottleneck; Mbeya; MBEYA REGION; DISEASE PROGRESSION; HIV-1; SUBTYPE; INFECTION; DIVERSIFICATION; VIREMIA;
D O I
10.1016/j.virol.2010.12.027
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
The Mbeya region of Tanzania has a genetically complex HIV epidemic with multiple subtypes and recombinant forms circulating, together with a high frequency of dual infections with more than one subtype. This study aimed to determine whether this impacted the HIV-1 transmission bottleneck. A total of 210 env sequences from 22 participants were generated from recently infected women from Mbeya using the single genome amplification approach. Participants were infected with subtypes C (n = 9), A (n = 4), or D (n = 1), and recombinants AC (n = 4), CD (n = 2), AD (n = 1), or ACD (n = 1). Sixteen participants (73%) were infected with a single variant; five (23%) with multiple variants; and one (4%) was dually infected. Thus the frequency of single variant infections was similar to cohorts located in genetically restricted subtype B or C epidemics, suggesting that multiple circulating subtypes and unique recombinant forms do not have a significant impact on the transmission bottleneck. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码:107 / 113
页数:7
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