Document 0601 DOCN M9620601 TI Increased level of activated gamma delta lymphocytes correlates with disease severity in HIV infection. DT 9602 AU Norazmi MN; Arifin H; Jamaruddin MA; Department of Immunology, School of Medical Sciences, Universiti; Sains Malaysia, Kelantan. SO Immunol Cell Biol. 1995 Jun;73(3):245-8. Unique Identifier : AIDSLINE MED/96082312 AB The lymphocyte subset expressing the gamma delta T cell receptor is increased in several infectious diseases including HIV infection. In this study the expression on gamma delta lymphocytes of the T cell activation markers CD25, HLA-DR and CD38, as well as the two isoforms of CD45, namely CD45RA and CD45RO, was determined in the peripheral blood of 56 HIV-infected intravenous drug users and 34 HIV-seronegative blood donors by two-colour flow cytometry. The percentage of gamma delta lymphocytes expressing HLA-DR and CD38 was higher than those in HIV-seronegative controls (P < 0.001 and P < 0.0001, respectively). Furthermore the HLA-DR+gamma delta+ lymphocytes correlated inversely with CD4+ T lymphocyte absolute count (P < 0.02 for both). The levels of gamma delta lymphocytes expressing CD25, CD45RA and CD45RO were similar to those in HIV-seronegative controls. Activated gamma delta lymphocytes may play a role in the HIV disease process and could provide a useful marker for disease progression. DE Adolescence Adult Antigens, CD45/ANALYSIS Antigens, Differentiation/ANALYSIS CD4 Lymphocyte Count CD4-Positive T-Lymphocytes/*METABOLISM Female Human HIV Infections/*IMMUNOLOGY HLA-DR Antigens/ANALYSIS Lymphocyte Transformation/*IMMUNOLOGY Male Nucleosidases/ANALYSIS Receptors, Antigen, T-Cell, gamma-delta/*ANALYSIS Receptors, Interleukin-2/ANALYSIS Support, Non-U.S. Gov't JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).