title: Quantitative alterations of the functionally distinct subsets of CD4 and CD8 T lymphocytes in asymptomatic HIV infection: changes in the expression of CD45RO, CD45RA, CD11b, CD38, HLA-DR, and CD25 antigens.
abstract: We determined the representation in asymptomatic human immunodeficiency virus (HIV) infection of the CD45RO+ and CD45RO- CD45RA+ subsets of CD4+ and CD8+ T lymphocytes, CD11b+ and CD11b- subsets of CD8+ T cells, and activated populations of these subsets. Three-color flow cytometry was used to quantitate the different CD4+ and CD8+ T cell populations in 116 asymptomatic HIV+ individuals. In asymptomatic HIV+ infection there was a significant relative increase in the CD4+ CD45RO+ and CD8+ CD45RO+ T cell subsets, which express CD38 and DR antigens, that correlated strongly with the decline in total CD4+ T cells. In addition, we found a loss of CD4+ CD45RO- and CD8+ CD45RO- T cells associated with progression of HIV infection (as measured by the decline in total CD4+ T cells). Studies presented here also indicate that, with the progression of asymptomatic HIV infection, CD8+ CD11b- T lymphocytes showed a significant decrease, whereas CD8+ CD11b+ T cells were significantly increased. This study demonstrates that the progression of HIV infection in asymptomatic patients involves the increase in CD45RO+ subsets of CD4+ and CD8+ T cells, the increase in CD8+ CD11b+ T cells, the decrease in CD45RO- CD45RA+ subsets of CD4 and CD8 T cells, and the decline in CD8+ CD11b- T cells.
authors.affiliation: Division of Immunology, Hospital General Universitario Gregorio Marañón, Madrid, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Benito
authors.forename: J M
authors.initials: JM
authors.lastname: Zabay
authors.forename: J
authors.initials: J
authors.lastname: Gil
authors.forename: M
authors.initials: M
authors.lastname: Bermejo
authors.forename: A
authors.initials: A
authors.lastname: Escudero
authors.forename: E
authors.initials: E
authors.lastname: Sánchez
authors.forename: E
authors.initials: E
authors.lastname: Fernández-Cruz
mesh_terms: D036541:ADP-ribosyl Cyclase; D051997:ADP-ribosyl Cyclase 1; D000328:Adult; D015703:Antigens, CD / Q000032:analysis; D000943:Antigens, Differentiation / Q000032:analysis; D018791:CD4 Lymphocyte Count; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology*; D015331:Cohort Studies; D005260:Female; D005434:Flow Cytometry; D006679:HIV Seropositivity / Q000276:immunology*; D006684:HLA-DR Antigens / Q000032:analysis; D006801:Humans; D016130:Immunophenotyping; D017493:Leukocyte Common Antigens / Q000032:analysis; D016014:Linear Models; D018655:Lymphocyte Count; D016177:Macrophage-1 Antigen / Q000032:analysis; D008297:Male; D008562:Membrane Glycoproteins; D009699:N-Glycosyl Hydrolases / Q000032:analysis; D015375:Receptors, Interleukin-2 / Q000032:analysis; D016176:T-Lymphocyte Subsets / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D015703:Antigens, CD; D000943:Antigens, Differentiation; D006684:HLA-DR Antigens; D016177:Macrophage-1 Antigen; D008562:Membrane Glycoproteins; D015375:Receptors, Interleukin-2; D017493:Leukocyte Common Antigens; D009699:N-Glycosyl Hydrolases; D036541:ADP-ribosyl Cyclase; C498154:CD38 protein, human; D051997:ADP-ribosyl Cyclase 1