Document 0402 DOCN M9440402 TI [Role of cytokines in the regulation of HIV expression] DT 9404 AU Molina JM; Service des Maladies Infectieuses et Tropicales, Hopital; Saint-Louis, Paris. SO Pathol Biol (Paris). 1993 Oct;41(8 Pt 2):777-80. Unique Identifier : AIDSLINE MED/94143072 AB The cytokine network, which is involved in the regulation of normal immune responses, may play a role in the pathogenesis of human immunodeficiency virus (HIV) infection, by altering the replication of HIV in target cells. In vitro data, suggest that certain cytokines like tumor necrosis factor alpha (TNF alpha) granulocyte-macrophage colony-stimulating factor (GM-CSF) and interleukin-6 (IL-6) could up-regulate HIV expression in T-cells and macrophages. Other cytokines like alpha interferon, are potent inhibitors of HIV replication. Surprisingly, the macrophage and the T-lymphocyte, the main source of cytokines in the body, do not produce any of these cytokines following HIV infection. B-lymphocytes however, spontaneously release TNF alpha and IL-6, that might enhance HIV replication in nearby monocytes and T-lymphocytes. This situation may occur in lymph nodes, a major reservoir of HIV. DE B-Lymphocytes/METABOLISM Cytokines/*METABOLISM English Abstract Granulocyte-Macrophage Colony-Stimulating Factor/*PHARMACOLOGY Human HIV Infections/MICROBIOLOGY/*PHYSIOPATHOLOGY HIV-1/*DRUG EFFECTS/GROWTH & DEVELOPMENT Interferon-alpha/PHARMACOLOGY Interleukin-6/BIOSYNTHESIS/*PHARMACOLOGY Macrophages/MICROBIOLOGY Stimulation, Chemical T-Lymphocytes/MICROBIOLOGY Tumor Necrosis Factor/BIOSYNTHESIS/*PHARMACOLOGY JOURNAL ARTICLE REVIEW REVIEW, TUTORIAL SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).