Institute of Infectious Diseases and Molecular Medicine, Division of Medical Virology, University of Cape Town, Cape Town.
J Infect Dis. 2012 Jul 1;206(1):35-40. doi: 10.1093/infdis/jis305. Epub 2012 May 2.
Alterations of the genital mucosal barrier may influence the number of viruses transmitted from a human immunodeficiency virus-infected source host to the newly infected individual. We used heteroduplex tracking assay and single-genome sequencing to investigate the effect of a tenofovir-based microbicide gel on the transmission bottleneck in women who seroconverted during the CAPRISA 004 microbicide trial. Seventy-seven percent (17 of 22; 95% confidence interval [CI], 56%-90%) of women in the tenofovir gel arm were infected with a single virus compared with 92% (13 of 14; 95% CI, 67%->99%) in the placebo arm (P = .37). Tenofovir gel had no discernable impact on the transmission bottleneck.
生殖器黏膜屏障的改变可能会影响从感染人类免疫缺陷病毒的源宿主传播到新感染个体的病毒数量。我们使用异源双链追踪分析和单基因组测序来研究基于替诺福韦的杀微生物剂凝胶对在 CAPRISA 004 杀微生物剂试验中发生血清转换的女性传播瓶颈的影响。与安慰剂组（95%置信区间 [CI]，56%-99%）相比，替诺福韦凝胶组中有 77%（22 例中的 17 例；95%CI，56%-90%）的女性感染了单一病毒（P=.37）。替诺福韦凝胶对传播瓶颈没有明显影响。
