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               <mods:identifier type="citation">Front Cell Infect Microbiol. 2022 Mar 17;12:858872.</mods:identifier>
               <mods:identifier type="doi">10.3389/fcimb.2022.858872</mods:identifier>
               <mods:identifier type="e-issn">2235-2988</mods:identifier>
               <mods:identifier type="journal">Frontiers in cellular and infection microbiology</mods:identifier>
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               <mods:identifier type="uri">http://hdl.handle.net/20.500.12105/15130</mods:identifier>
               <mods:abstract>Human immunodeficiency virus-1 (HIV-1) elite controllers are heterogeneous due to different immunovirological features. We aimed to identify plasma biomarkers associated with loss of spontaneous HIV-1 control in long-term elite controllers (HIV-LTECs). We performed a retrospective study in 60 HIV-LTECs [36 true-LTECs and 24 LTECs losing control (LTECs-LC)]. We selected a plasma sample from true-LTECs (towards the middle of the follow-up period) and two samples from LTECs-LC (one far from the loss of control and another close to loss of control). Plasma biomarkers were evaluated using multiplex immunoassays. The partial least squares-discriminant analysis provided the variable importance in projection (VIP), and the adjusted Generalized Linear Model provided the adjusted arithmetic mean ratio (aAMR). At the moment of the first LTECs-LC samples, the only plasma biomarker with a VIP≥1.5 was sTNF-R1, which showed higher values in LTECs-LC than true-LTECs [aAMR=1.62 (95%CI=1.20-2.19); p=0.001]. After a median of 3.9 (IQR=4.5) years of follow-up from the first sample, we also had access to a second plasma sample from 10 LTECs-LC patients. At the moment of this second LTECs-LC sample, the only plasma biomarker with VIP≥1.5 was also sTNF-R1, which showed higher values in LTECs-LC than true-LTECs [aAMR=1.93 (95%CI=1.41-2.65); p&lt;0.001]. The difference between the first and second samples of LTECs-LC was significant (Δx= 6.58 (95%=0.3; 12.88); p=0.040). In conclusion, high plasma values of sTNF-R1 appear to discriminate HIV-LTECs that lose the natural control of HIV-1, helping to define a specific phenotype that may be useful for the clinical management of these patients.</mods:abstract>
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                  <mods:topic>HIV-1</mods:topic>
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               <mods:subject>
                  <mods:topic>Long-term elite controllers</mods:topic>
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               <mods:subject>
                  <mods:topic>Plasma biomarkers</mods:topic>
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               <mods:subject>
                  <mods:topic>Inflammation</mods:topic>
               </mods:subject>
               <mods:subject>
                  <mods:topic>AIDS progression</mods:topic>
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                  <mods:title>High Plasma sTNF-R1 Level Is Related to Loss of Natural HIV Control in Long-Term Elite Controllers</mods:title>
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