title: HLA class I soluble antigen serum levels in HIV-positive subjects--correlation with cellular and serological parameters.
abstract: HLA Class I soluble antigen serum levels have been evaluated in 178 subjects who were positive for human immunodeficiency virus (HIV) and in 66 HIV-negative controls. The serum levels of HIV p24 antigen, interleukin 2 receptor (IL 2r), CD8 soluble antigen (CD 8ag), B2-microglobulin (B2-m), and neopterin (Npt), as well as the number of CD4+ and CD8+ T cells were also evaluated. Results show that mean HLA class I serum levels of HIV-positive subjects: (1) are significantly higher than controls (p less than 0.001); (2) increase with disease progression (67.7 RU/ml, 103.4 RU/ml, and 169.6 RU/ml for subjects belonging to groups II, II, and IV of the Centers for Disease Control [CDC] classification, respectively); (3) correlate with HIV p24 antigen, IL2r, and CD 8 soluble antigen levels. Present data show that elevated levels of HLA class I soluble antigens, correlating with disease stage, are found in sera of HIV-positive subjects. Circulating HLA class I molecules, interfering with some immune functions, might contribute to the pathogenesis of the immune deficiency of HIV-positive subjects.
authors.forename: F
authors.initials: F
authors.lastname: Puppo
authors.forename: A
authors.initials: A
authors.lastname: Orlandini
authors.forename: R
authors.initials: R
authors.lastname: Ruzzenenti
authors.forename: S
authors.initials: S
authors.lastname: Comuzio
authors.forename: A
authors.initials: A
authors.lastname: Salamito
authors.forename: A
authors.initials: A
authors.lastname: Farinelli
authors.forename: R
authors.initials: R
authors.lastname: Stagnaro
authors.forename: F
authors.initials: F
authors.lastname: Indiveri
mesh_terms: D000945:Antigens, Differentiation, T-Lymphocyte / Q000032:analysis; D001708:Biopterins / Q000031:analogs & derivatives / Q000097:blood; D016827:CD8 Antigens; D015683:Gene Products, gag / Q000032:analysis; D016655:HIV Core Protein p24; D006679:HIV Seropositivity / Q000097:blood* / Q000276:immunology; D006680:HLA Antigens / Q000032:analysis*; D006801:Humans; D007958:Leukocyte Count; D019798:Neopterin; D015375:Receptors, Interleukin-2 / Q000097:blood; D013601:T-Lymphocytes / Q000032:analysis; D014758:Viral Core Proteins / Q000032:analysis; D001613:beta 2-Microglobulin / Q000032:analysis
chemical_list: D000945:Antigens, Differentiation, T-Lymphocyte; D016827:CD8 Antigens; D015683:Gene Products, gag; D016655:HIV Core Protein p24; D006680:HLA Antigens; D015375:Receptors, Interleukin-2; D014758:Viral Core Proteins; D001613:beta 2-Microglobulin; D001708:Biopterins; D019798:Neopterin