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利用来自刚果民主共和国金沙萨的干血斑,对 POCT Xpert HIV-1 检测用于检测-定量复杂 HIV 重组体的效用。

Utility Of POC Xpert HIV-1 Tests For Detection-Quantification Of Complex HIV Recombinants Using Dried Blood Spots From Kinshasa, D. R. Congo.

机构信息

HIV-1 Molecular Epidemiology Laboratory, Microbiology and Parasitology Department, University Hospital Ramón y Cajal-IRYCIS and CIBEREsp-RITIP, Madrid, 28034, Spain.

Monkole Hospital, Kinshasa, Democratic Republic of the Congo.

出版信息

Sci Rep. 2019 Apr 5;9(1):5679. doi: 10.1038/s41598-019-41963-y.

DOI:10.1038/s41598-019-41963-y
PMID:30952893
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6450884/
Abstract

Point-of-Care (POC) molecular assays improve HIV infant diagnosis and viral load (VL) quantification in resource-limited settings. We evaluated POC performance in Kinshasa (Democratic Republic of Congo), with high diversity of HIV-1 recombinants. In 2016, 160 dried blood samples (DBS) were collected from 85 children (60 HIV-, 18 HIV+, 7 HIV-exposed) and 75 HIV+ adults (65 treated, 10 naive) at Monkole Hospital (Kinshasa). We compared viraemia with Cepheid-POC-Xpert-HIV-1VL and the non-POC-COBASAmpliPrep/COBASTaqManHIV-1-Testv2 in all HIV+, carrying 72.4%/7.2% HIV-1 unique/complex recombinant forms (URF/CRF). HIV-1 infection was confirmed in 14 HIV+ children by Cepheid-POC-Xpert-HIV-1Qual and in 70 HIV+ adults by both Xpert-VL and Roche-VL, identifying 8 false HIV+ diagnosis performed in DRC (4 adults, 4 children). HIV-1 was detected in 95.2% and 97.6% of 84 HIV+ samples by Xpert-VL and Roche-VL, respectively. Most (92.9%) HIV+ children presented detectable viraemia by both VL assays and 74.3% or 72.8% of 70 HIV+ adults by Xpert or Roche, respectively. Both VL assays presented high correlation (R = 0.89), but showing clinical relevant ≥0.5 log VL differences in 15.4% of 78 cases with VL within quantification range by both assays. This is the first study confirming the utility of Xpert HIV-1 tests for detection-quantification of complex recombinants currently circulating in Kinshasa.

摘要

即时检测 (POC) 分子检测可提高资源有限环境下的 HIV 婴儿诊断和病毒载量 (VL) 定量。我们在拥有多种 HIV-1 重组体的金沙萨(刚果民主共和国)评估了 POC 的性能。2016 年,从 Monkole 医院(金沙萨)采集了 160 份干血斑 (DBS),包括 85 名儿童(60 名 HIV-,18 名 HIV+,7 名 HIV 暴露)和 75 名 HIV+成年人(65 名治疗,10 名未治疗)。我们比较了 Cepheid-POC-Xpert-HIV-1VL 和非 POC-COBASAmpliPrep/COBASTaqManHIV-1-Testv2 在所有 HIV+中的病毒血症情况,其中携带 72.4%/7.2% HIV-1 独特/复杂重组形式 (URF/CRF)。Cepheid-POC-Xpert-HIV-1Qual 确认了 14 名 HIV+儿童的 HIV-1 感染,罗氏 VL 确认了 70 名 HIV+成人的 HIV-1 感染,在刚果民主共和国发现了 8 例假阳性 HIV+诊断(4 名成人,4 名儿童)。Xpert-VL 和罗氏 VL 分别在 95.2%和 97.6%的 84 份 HIV+样本中检测到 HIV-1。通过两种 VL 检测,92.9%的 HIV+儿童的病毒血症均可检测到,Xpert 或罗氏分别在 70 名 HIV+成人中检测到 74.3%或 72.8%的病毒血症。两种 VL 检测均具有高度相关性(R=0.89),但在两种检测方法均在定量范围内的 78 例病例中,有 15.4%的病例存在临床相关的≥0.5log VL 差异。这是第一项研究,证明 Xpert HIV-1 检测在目前在金沙萨流行的复杂重组体的检测和定量中具有实用性。

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