title: [Relationship between T-cells subsets and prognostic markers in HIV-1-infected children].
abstract: BACKGROUND
  To investigate the relationship between peripheral blood T-cell subsets and both CD4+ T-cell percentage and viral load (VL) in HIV-1-infected children.
  
  
  METHODS
  We studied 50 HIV-1-infected children on antiretroviral therapy. T-cell subsets were determined by flow cytometry. The VL was quantified using standardized molecular methods.
  
  
  RESULTS
  Memory (CD45RO+), activated memory (CD45RO+HLA-DR+) and CD45RA-CD62L+ (memory cells expressing L-selectin) CD4+ and CD8+ T-cells correlated positively with the VL and negatively with the percentage of CD4+ T-cells. Inversely, naive CD4+ and CD8+ T-cells (CD45RA+CD62L+) correlated positively with the percentage of CD4+ T-cells and negatively with the VL. HLA-DR+, CD38+ or HLA-DR+CD38+CD4+ and CD8+ T-cells correlated also positively with the VL and negatively with the percentage of CD4+ T-cells (with the exception of CD4+CD38+ which did not show any association with the VL). CD8+CD28+ T-cells correlated positively with the percentage of CD4+ T-cells and negatively with the VL, whereas CD8+ CD57+ and CD8+CD28-CD57+ exhibited an opposite association.
  
  
  CONCLUSIONS
  Our data suggest a relationship between the different lymphocyte subsets (memory, naïve, activated and effector T-cells) and the most commonly used markers in clinical practice, namely the viral load and the CD4+ T-cell percentage. Some of these subsets may be useful to determine the virologic and immunologic status in HIV-1-infected children.
authors.affiliation: Servicio de Inmunología. Hospital General Universitario Gregorio Marañón. Madrid.
authors.forename: S
authors.initials: S
authors.lastname: Resino
authors.forename: J
authors.initials: J
authors.lastname: Navarro
authors.forename: J M
authors.initials: JM
authors.lastname: Bellón
authors.forename: D
authors.initials: D
authors.lastname: Gurbindo
authors.forename: J A
authors.initials: JA
authors.lastname: León
authors.forename: M A
authors.initials: MA
authors.lastname: Muñoz-Fernández
mesh_terms: D015415:Biomarkers / Q000097:blood; D018791:CD4 Lymphocyte Count; D002648:Child; D015658:HIV Infections / Q000276:immunology* / Q000821:virology; D015497:HIV-1; D006801:Humans; D016130:Immunophenotyping; D011379:Prognosis; D016176:T-Lymphocyte Subsets; D019562:Viral Load
chemical_list: D015415:Biomarkers