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Microbial Translocation Is Linked to a Specific Immune Activation Profile in HIV-1-Infected Adults With Suppressed Viremia
oleh: Mehwish Younas, Christina Psomas, Christina Psomas, Christelle Reynes, Renaud Cezar, Lucy Kundura, Pierre Portales, Corinne Merle, Nadine Atoui, Céline Fernandez, Vincent Le Moing, Vincent Le Moing, Vincent Le Moing, Claudine Barbuat, Olivier Moranne, Albert Sotto, Albert Sotto, Robert Sabatier, Pascale Fabbro, Thierry Vincent, Thierry Vincent, Catherine Dunyach-Remy, Audrey Winter, Jacques Reynes, Jacques Reynes, Jacques Reynes, Jean-Philippe Lavigne, Pierre Corbeau, Pierre Corbeau, Pierre Corbeau
Format: | Article |
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Diterbitkan: | Frontiers Media S.A. 2019-09-01 |
Deskripsi
Persistent immune activation in virologically suppressed HIV-1 patients, which may be the consequence of various factors including microbial translocation, is a major cause of comorbidities. We have previously shown that different profiles of immune activation may be distinguished in virological responders. Here, we tested the hypothesis that a particular profile might be the consequence of microbial translocation. To this aim, we measured 64 soluble and cell surface markers of inflammation and CD4+ and CD8+ T-cell, B cell, monocyte, NK cell, and endothelial activation in 140 adults under efficient antiretroviral therapy, and classified patients and markers using a double hierarchical clustering analysis. We also measured the plasma levels of the microbial translocation markers bacterial DNA, lipopolysaccharide binding protein (LBP), intestinal-fatty acid binding protein, and soluble CD14. We identified five different immune activation profiles. Patients with an immune activation profile characterized by a high percentage of CD38+CD8+ T-cells and a high level of the endothelial activation marker soluble Thrombomodulin, presented with higher LBP mean (± SEM) concentrations (33.3 ± 1.7 vs. 28.7 ± 0.9 μg/mL, p = 0.025) than patients with other profiles. Our data are consistent with the hypothesis that the immune activation profiles we described are the result of different etiological factors. We propose a model, where particular causes of immune activation, as microbial translocation, drive particular immune activation profiles responsible for particular comorbidities.