Document 0272 DOCN M95A0272 TI Higher cytotoxic activity and increased levels of IL-1 beta, IL-6, and TNF-alpha in patients undergoing cardiopulmonary bypass. DT 9510 AU Marti F; Munoz J; Peiro M; Bertran E; Ferran C; Octavio C; Garcia J; Rueda F; Department of Cryobiology and Cell Therapy, Ciutat Sanitaria i; Universitaria de Bellvitge, L'Hospitalet de Llobregat,; Barcelona, Spain. SO Am J Hematol. 1995 Jul;49(3):237-9. Unique Identifier : AIDSLINE MED/95328544 AB Extracorporeal circulation (EC) by surgical bypass is often associated with a systemic inflammatory response. The purpose of this study was to assess the effect of EC on the serum levels of pro-inflammatory mediators Interleukin (IL)-1 beta, IL-6, tumor necrosis factor (TNF)-alpha, and soluble CD-23. Peripheral blood lymphocyte subsets and natural killer cell (NK) cytotoxic activity were also analyzed before and after the bypass process. The results from eight patients who underwent cardiac surgery showed a significant increase in the levels of IL-1 beta, IL-6, and TNF-alpha, a decrease in CD4+/CD8+ lymphocyte ratio, and an overstimulated NK cytotoxic activity. These changes on serum cytokine levels and cellular immunology parameters could play an important role in the development of adverse effects associated with EC. DE Aged *Cardiopulmonary Bypass/ADVERSE EFFECTS *Cytotoxicity, Immunologic CD4-CD8 Ratio Female Human Interleukin-1/*METABOLISM Interleukin-6/*METABOLISM Killer Cells, Natural/IMMUNOLOGY Male Middle Age Support, Non-U.S. Gov't Tumor Necrosis Factor/*METABOLISM JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).