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| Content Provider | PubMed Central |
|---|---|
| Author | Stevens, G. Rekhviashvili, N. Scott, L. E. Gonin, René Stevens, W. |
| Copyright Year | 2005 |
| Abstract | Although human immunodeficiency virus type 1 (HIV-1) RNA is the acknowledged “gold standard” marker for monitoring disease activity in patients receiving highly active antiretroviral therapy (HAART), it remains unaffordable in resource-constrained settings. The present study investigated two commercially available kits for the detection of HIV-1 viral load markers as more affordable alternatives to HIV-1 RNA quantitation. The greatly improved heat-denatured, signal-boosted HiSens HIV-1 p24 Ag Ultra kit (Perkin-Elmer) and the ExaVir Load Quantitative HIV-RT kit (Cavidi Tech AB) were compared with the Amplicor HIV-1 Monitor (version 1.5) assay (Roche Molecular Systems Inc.). A total of 117 samples containing HIV-1 subtype C were analyzed by all three methodologies. Eighty-nine of these samples represented serial measurements from 20 patients receiving HAART. The remaining samples analyzed were from a group of treatment-naïve patients. The association between the p24 antigen assay and the RNA assay was fairly strong (R 2 = 0.686). The association between the reverse transcriptase (RT) quantitation assay and the RNA assay was strong (R 2 = 0.810). Both alternative assays seemed most useful for the serial monitoring of patients receiving HAART (n = 89 plasma samples from 20 patients), as all assays showed a statistically significant downward trend over time, with the trend being either linear or curvilinear. In addition, all three assays showed negative correlations with the CD4 count (CD4 count versus RNA load, r = −0.336 and P = 0.001; CD4 count versus p24 antigen level, r = −0.541 and P < 0.0001; CD4 count versus RT level, r = −0.358 and P = 0.0006). Still of major concern are both the lack of sensitivity and the wide degrees of variability of both assays. However, both assays provide a less expensive alternative to the Roche viral load assay and demonstrate the same trends during treatment. |
| Related Links | http://dx.doi.org/10.1128/jcm.43.2.857-861.2005 |
| Ending Page | 861 |
| Page Count | 5 |
| Starting Page | 857 |
| File Format | |
| ISSN | 00951137 |
| e-ISSN | 1098660X |
| Journal | Journal of Clinical Microbiology |
| Issue Number | 2 |
| Volume Number | 43 |
| Language | English |
| Publisher | American Society for Microbiology |
| Publisher Date | 2005-02-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Microbiology |
| Subject Keyword | Microbiology (medical) Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Microbiology (medical) |
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