2026-05-16T22:07:40Zhttps://repisalud.isciii.es/rest/oai/request

oai:repisalud.isciii.es:20.500.12105/225652025-04-29T13:41:12Zcom_20.500.12105_15322com_20.500.12105_2051col_20.500.12105_16958col_20.500.12105_16967col_20.500.12105_16978

00925njm 22002777a 4500 dc Rosado-Sanchez, Isaac author Herrero-Fernandez, Ines author Genebat, Miguel author Del Romero, Jorge author Riera, Melchor author Podzamczer, Daniel author Olalla, Julian author Vidal, Francesc author Muñoz-Fernandez, María Ángeles author Leal, Manuel author Pacheco, Yolanda María author 2018-07-18 Background: HIV-infected subjects with suboptimal CD4 restoration despite suppressive combined antiretroviral treatment (cART) (immunodiscordant subjects) have been classically characterized after a variable period of time under cART. Recently, we have reported that an increased frequency of proliferating CD4 T-cells in these subjects is already present before the cART onset. The potential contribution of peripheral compensatory homeostatic proliferation (HP) is yet unknown. We aimed to analyze the expression of HP-related cellular markers on CD4 T-cells of immunodiscordant subjects before cART. Methods: We analyzed the expression of OX40 and alpha 4 beta 7 on peripheral CD4 T-cells from immunodiscordant and control subjects (n = 21 each group) before cART initiation, and also on available follow-up samples (after 24 month of suppressive cART). Additionally, we tested the expression of these markers in an in vitro system for the study of human HP processes. Results: Immunodiscordant subjects showed increased levels of OX40 and alpha 4 beta 7 on CD4 T-cells before cART initiation. While the cART tended to reduce these levels, immunodiscordant subjects still maintained comparatively higher levels of OX40 and alpha 4 beta 7 after 24 months under suppressive cART. These HP-related markers were upregulated in vitro during the human HP, especially during the fast HP. Conclusion: Our results are compatible with exacerbated HP processes in immunodiscordant subjects, already before the cART onset. Rosado-Sanchez I, Herrero-Fernandez I, Genebat M, Del Romero J, Riera M, Podzamczer D, et al. HIV-Infected Subjects With Poor CD4 T-Cell Recovery Despite Effective Therapy Express High Levels of OX40 and alpha 4 beta 7 on CD4 T-Cells Prior Therapy Initiation. Front Immunol. 2018 Jul 18;9:1673. 10.3389/fimmu.2018.01673 1664-3224 Frontiers in Immunology http://hdl.handle.net/20.500.13003/9210 30073002 L623044143 2-s2.0-85050137359 https://hdl.handle.net/20.500.12105/22565 439054700001 Immunodiscordant response to combined antiretroviral treatment lOw CD4 recovery Homeostatic parameters Homeostatic proliferation OX40 Alpha 4 beta 7 CD4 T-cell homeostasis HIV HIV-Infected Subjects With Poor CD4 T-Cell Recovery Despite Effective Therapy Express High Levels of OX40 and alpha 4 beta 7 on CD4 T-Cells Prior Therapy Initiation