title: High levels of CD57+CD28- T-cells, low T-cell proliferation and preferential expansion of terminally differentiated CD4+ T-cells in HIV-elite controllers.
abstract: The study of clinical and demographic characteristics related to virus control and disease progression in patients who spontaneously control HIV vireamia (HIV-controllers) is of major interest. A particular cause of HIV control has not been found and the scenario could be partially explained by special homeostatic and immunological features. In this study, CD57+CD28- phenotype, T-cell activation and levels of proliferating T-cells in elite-controllers were studied in relation to spontaneous virus control. In HIV-controllers, 9% were AIDS-diagnosed and there was a high proportion of women. In elite-controllers, high T-cell CD57+CD28- phenotype and activation levels were found and, interestingly, there was a low proliferation of total and naïve T-cells and a high proliferation of the CD4+ T(EM)RA subset. Low T-cell proliferation and preferential expansion of terminally differentiated effector T-cell subsets could be an important factor for virus control in elite-controllers.
authors.affiliation: Virgen del Rocio University Hospital/Biomedicine Institute of Seville, Spain.
authors.forename: Ezequiel
authors.initials: E
authors.lastname: Ruiz-Mateos
authors.forename: Sara
authors.initials: S
authors.lastname: Ferrando-Martinez
authors.forename: Kawthar
authors.initials: K
authors.lastname: Machmach
authors.forename: Pompeyo
authors.initials: P
authors.lastname: Viciana
authors.forename: Yolanda M
authors.initials: YM
authors.lastname: Pacheco
authors.forename: Nieves
authors.initials: N
authors.lastname: Nogales
authors.forename: Miguel
authors.initials: M
authors.lastname: Genebat
authors.forename: Manuel
authors.initials: M
authors.lastname: Leal
mesh_terms: D000328:Adult; D018106:CD28 Antigens / Q000276:immunology*; D018791:CD4 Lymphocyte Count; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D018959:CD57 Antigens / Q000276:immunology*; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D005260:Female; D015658:HIV Infections / Q000276:immunology* / Q000821:virology; D020276:HIV Long-Term Survivors; D006679:HIV Seropositivity / Q000276:immunology / Q000821:virology; D015497:HIV-1 / Q000276:immunology; D015498:HIV-2 / Q000276:immunology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013030:Spain; D016176:T-Lymphocyte Subsets / Q000276:immunology*
chemical_list: D018106:CD28 Antigens; D018959:CD57 Antigens