title: The expression of CD8 on B lymphocytes in HIV-infected individuals.
abstract: In HIV-1 infected individuals the CD8 + T lymphocyte population is markedly activated as reflected by increased expression of the CD38 and CD45RO activation markers and elevated serum levels of soluble CD8 antigen. We have previously shown that in vitro activation of peripheral blood lymphocytes results in the appearance of T cell markers on B cells. In the present study B lymphocytes from HIV-1-infected individuals were tested for the expression of the CD8 T cell antigen, using F(ab')2 fragments of antibodies against the CD8 and CD19 antigens. The proportion of CD19 + B cells which co-expressed CD8 was significantly elevated among 55 HIV-infected individuals (7.20 +/- 1.24%, mean +/- S.E.) as compared with among 22 normal controls (3.32 +/- 0.70%). The proportion of CD4 + cells decreased significantly in HIV-infected individuals in accordance with the progression of the infection, but no significant change in the level of CD8 + CD19 + B cells was seen in different stages of the disease. In contrast, the proportion of CD8 + B cells showed a significant correlation with the proportion of CD8 + cells.
authors.affiliation: Hubert H. Humphrey Center for Experimental Medicine and Cancer Research, Hebrew University, Hadassah Medical School, Jerusalem, Israel.
authors.forename: M
authors.initials: M
authors.lastname: Schlesinger
authors.forename: R
authors.initials: R
authors.lastname: Rabinowitz
authors.forename: P
authors.initials: P
authors.lastname: Levy
authors.forename: S
authors.initials: S
authors.lastname: Maayan
mesh_terms: D018941:Antigens, CD19 / Q000096:biosynthesis; D001402:B-Lymphocytes / Q000378:metabolism*; D016827:CD8 Antigens / Q000096:biosynthesis*; D005434:Flow Cytometry; D015658:HIV Infections / Q000276:immunology* / Q000378:metabolism*; D006801:Humans
chemical_list: D018941:Antigens, CD19; D016827:CD8 Antigens