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High Rate of Non-detectable HIV-1 RNA Among Antiretroviral Drug Naive HIV Positive Individuals in Nigeria

機(jī)譯:尼日利亞抗逆轉(zhuǎn)錄病毒藥物純凈HIV陽性個(gè)體中未檢測到的HIV-1 RNA高發(fā)生率

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摘要

Plasma HIV-1 RNA concentration, or viral load, is an indication of the magnitude of virus replication and largely correlates with disease progression in an infected person. It is a very useful guide for initiation of therapy and monitoring of response to antiretroviral drugs. Although the majority of patients who are not on antiretroviral therapy (ART) have a high viral load, a small proportion of ART naive patients are known to maintain low levels or even undetectable viral load levels. In this study, we determined the rate of undetectable HIV-1 RNA among ART naive HIV positive patients who presented for treatment at the University College Hospital (UCH), Ibadan, Nigeria from 2005 to 2011. Baseline viral load and CD4 lymphocyte cell counts of 14,662 HIV positive drug naive individuals were determined using the Roche Amplicor version 1.5 and Partec easy count kit, respectively. The detection limits of the viral load assay are 400 copies/mL and 750,000 copies/mL for lower and upper levels, respectively. A total of 1,399 of the 14,662 (9.5%) HIV-1 positive drug naive individuals had undetectable viral load during the study period. In addition, the rate of non-detectable viral load increased over the years. The mean CD4 counts among HIV-1 infected individuals with detectable viral load (266 cells/μL; range = 1 to 2,699 cells/μL) was lower than in patients with undetectable viral load (557 cells/μL; range = 1 to 3,102 cells/μL). About 10% of HIV-1 infected persons in our study population had undetectable viral load using the Roche Amplicor version 1.5.
機(jī)譯:血漿HIV-1 RNA濃度或病毒載量表明病毒復(fù)制的程度,并且與感染者的疾病進(jìn)展密切相關(guān)。這是開始治療和監(jiān)測對抗逆轉(zhuǎn)錄病毒藥物反應(yīng)的非常有用的指南。盡管大多數(shù)未接受抗逆轉(zhuǎn)錄病毒治療(ART)的患者都有較高的病毒載量,但已知一小部分未接受抗逆轉(zhuǎn)錄病毒治療的患者維持低水平,甚至檢測不到病毒載量。在這項(xiàng)研究中,我們確定了2005年至2011年在尼日利亞伊巴丹大學(xué)醫(yī)院就診的ART單純HIV陽性患者中未檢測到HIV-1 RNA的比率?;€病毒載量和CD4淋巴細(xì)胞計(jì)數(shù)使用Roche Amplicor 1.5版和Partec簡易計(jì)數(shù)試劑盒分別確定了14,662例HIV陽性藥物純真的患者。病毒載量測定的檢出限分別為低水平和高水平400拷貝/ mL和750,000拷貝/ mL。在研究期間,在14,662(9.5%)個(gè)HIV-1陽性藥物初次使用的個(gè)體中,共有1,399人具有無法檢測到的病毒載量。此外,多年來無法檢測到的病毒載量增加了。具有可檢測的病毒載量(266細(xì)胞/μL;范圍= 1至2,699細(xì)胞/μL)的HIV-1感染個(gè)體的平均CD4計(jì)數(shù)低于未檢測到病毒載量的患者(557細(xì)胞/μL;范圍= 1至3,102細(xì)胞) /μL)。使用Roche Amplicor 1.5版,在我們的研究人群中,約有10%的HIV-1感染者檢測不到病毒載量。

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