title: Distribution of naive and memory/effector CD4 + T lymphocytes and expression of CD38 on CD8 + T lymphocytes in AIDS patients with tuberculosis.
abstract: CD(4)(+) and CD(8)(+) T lymphocyte counts, naive and memory/effector CD(4)(+) T subpopulations, and the expression of CD(38) on CD(8)(+) T lymphocytes were evaluated in four groups: AIDS patients with tuberculosis (HIV/TB, n=14), HIV-1 infected patients (HIV, n=10), HIV-1 negative patients with tuberculosis (TB, n=20) and healthy controls (CTL, n=17). TB and HIV had fewer +CD(4)(+) T cells than CTL, with the lowest values observed in TB/HIV (p<0.001). No difference between groups was observed in the percentage of naive and memory/effector subpopulations in +CD(4)(+) T lymphocytes. TB (355 cells/ micro L) and HIV (517 cells/ micro L) had diverging effects on +CD(8)(+) T cell counts, with a marked depletion observed in HIV/TB (196 cells/ micro L). TB and HIV up-regulated CD(38) expression on CD(8)(+) T cells, a finding also present in TB/HIV. While the decrease of +CD(4)(+) T cell counts in HIV/TB may be attributed to HIV and tuberculosis, the decrease of +CD(8)(+) T cell counts is likely to be due to tuberculosis.
authors.affiliation: Division of Infectious Diseases, Federal University of São Paulo/SP, Brazil.
authors.forename: Denise do Socorro
authors.initials: Ddo S
authors.lastname: S  Rodrigues
authors.forename: Rosangela M
authors.initials: RM
authors.lastname: de C  Cunha
authors.forename: Esper Georges
authors.initials: EG
authors.lastname: Kallas
authors.forename: Reinaldo
authors.initials: R
authors.lastname: Salomao
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000150:complications / Q000276:immunology*; D000328:Adult; D000704:Analysis of Variance; D000911:Antibodies, Monoclonal / Q000276:immunology; D000954:Antigens, Surface / Q000276:immunology; D018791:CD4 Lymphocyte Count; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology*; D016022:Case-Control Studies; D015497:HIV-1 / Q000276:immunology*; D006801:Humans; D007156:Immunologic Memory; D008213:Lymphocyte Activation; D016176:T-Lymphocyte Subsets / Q000276:immunology; D014397:Tuberculosis, Pulmonary / Q000150:complications / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D000954:Antigens, Surface