Abstract
Background: Acute graft-versus-host disease still represents the major factor that limits successful allogeneic bone marrow transplantation. Cytokines released by type 1 T-helper cells are thought to play a pivotal role in acute graft-versus-host disease. Objective: This study was performed to investigate whether the serum levels of soluble IL-2 receptor, IL-12, IL-18, and IFN-γ were associated with the manifestation of acute graft-versus-host disease. Methods: Serum cytokine levels were measured by sandwich ELISA in 18 patients who underwent allogeneic bone marrow transplantation. Results: Serum levels of soluble IL-2 receptor, IL-12, IL-18, and IFN-γ were increased in patients in whom acute graft-versus-host disease developed. However, only serum soluble IL-2 receptor levels were significantly related to disease severity. Serum levels of IL-12 and IL-18, both of which are mainly produced by activated macrophages, were increased in different phases of acute graft-versus-host disease, especially grade I. Serum levels of soluble IL-2 receptor and IFN-γ were significantly elevated in patients with fever. Conclusion: Serum levels of soluble IL-2 receptor were more closely related to the severity of acute graft-versus-host disease than those of IL-12, IL-18, and IFN-γ. (J Allergy Clin Immunol 2000;106:S45-50.)
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