title: Inconsistent reconstitution of cytomegalovirus-specific cell-mediated immunity in human immunodeficiency virus-infected patients receiving highly active antiretroviral therapy.
abstract: Cytomegalovirus (CMV)-immune recovery was characterized in human immunodeficiency virus (HIV)-infected patients receiving highly active antiretroviral therapy. CMV lymphocyte proliferation (LP), responder-cell frequency (RCF), and interferon (IFN)-gamma and interleukin (IL)-2 secretion were studied in CMV-seropositive HIV-infected patients and in CMV-seropositive HIV-uninfected control subjects. HIV-infected patients and control subjects had similar proportions of IL-2 and IFN-gamma, but levels were lower in HIV-infected patients. LP and RCF were significantly less frequent and of lower magnitude in HIV-infected patients. The measures of CMV cell-mediated immunity were correlated in HIV-uninfected but not in HIV-infected subjects. To investigate this, IL-2, IL-12, anti-CD28 plus anti-CD49d, or anti-IL-10 was added in vitro, with no effect on LP. However, CD8 cell depletion of mononuclear cells from HIV-infected patients increased LP responses to levels similar to those of uninfected control subjects; before depletion, only RCF correlated with CD4 cell counts, but after depletion, LP also correlated with CD4 cell counts.
authors.affiliation: Department of Pediatrics, University of Colorado Health Sciences Center, Denver, CO 80262, USA. adriana.weinberg@uchsc.edu
authors.forename: A
authors.initials: A
authors.lastname: Weinberg
authors.forename: D A
authors.initials: DA
authors.lastname: Wohl
authors.forename: R J
authors.initials: RJ
authors.lastname: Barrett
authors.forename: C
authors.initials: C
authors.lastname: van der Horst
mesh_terms: D017088:AIDS-Related Opportunistic Infections / Q000276:immunology*; D023241:Antiretroviral Therapy, Highly Active; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D002478:Cells, Cultured; D003587:Cytomegalovirus / Q000276:immunology*; D003586:Cytomegalovirus Infections / Q000276:immunology*; D015658:HIV Infections / Q000188:drug therapy* / Q000276:immunology*; D018023:HIV Seronegativity / Q000276:immunology; D006801:Humans; D007111:Immunity, Cellular; D007156:Immunologic Memory; D007371:Interferon-gamma / Q000096:biosynthesis; D007376:Interleukin-2 / Q000096:biosynthesis; D008213:Lymphocyte Activation; D012016:Reference Values; D012044:Regression Analysis; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D007376:Interleukin-2; D007371:Interferon-gamma