PMID- 11798503 OWN - NLM STAT- MEDLINE DCOM- 20030411 LR - 20231213 IS - 1525-8165 (Print) IS - 1525-8165 (Linking) VI - 10 IP - 6 DP - 2001 Dec TI - Interleukin-18 binding protein in acute graft versus host disease and engraftment following allogeneic peripheral blood stem cell transplants. PG - 769-76 AB - Dysregulation of the cytokine network plays an important role in graft-versus-host disease (GVHD). Interleukin-18 (IL-18) is an obligatory cytokine for interferon-gamma (IFN-gamma) production and IFN-gamma and sIFN-gammaR are elevated in patients with GVHD. Because IL-18 binding protein (IL-18BP) is an inhibitor of IL-18-mediated IFN-gamma production, we evaluated IL-18BP levels in patients undergoing allogeneic peripheral blood stem cell transplantation (PBSCT). IL-18BP levels were assessed in 14 patients on day -10 (before conditioning), on the day of transplant, on the day of engraftment, and during transplant-related complications. A comparison of the kinetics of IL-18BP and soluble(s) IL-6R, sIFN-gammaR, IL-18 serum levels was performed. IL-18BP levels were assessed by specific monoclonal antibodies in a double-sandwich enzyme-linked immunosorbent assay (ELISA). In all patients IL-18BP levels decreased during conditioning and increased in parallel with engraftment (p < 0.05). Accordingly, during rejection, IL-18BP serum levels remained low and similar to pretransplant levels. The mean elevation of IL-18BP detected in association to acute GVHD was significantly higher in comparison to normal engraftment (p < 0.05). A correlation between IL-18BP, sIFNgammaR, and sIL-6R serum levels was found in all patients. No correlation between IL-18 and IL-18BP serum levels was found in patients undergoing uneventful PBSCT and rejection, whereas a marked increase in both IL-18 and IL-18BP levels was detected during acute GVHD (p < 0.01). Our data suggest that the dysregulation of IL-18 and IL-18BP may be important in the pathophysiology of transplant-related complications. Furthermore, because preliminary data from our group show that IL-18 blockage ameliorates GVHD in murine models, it is inferred that these cytokines may represent potential targets in the development of new therapeutic strategies in acute GVHD. FAU - Zecchina, G AU - Zecchina G AD - Department of Scienze Cliniche e Biologiche Universita di Torino, Italy. FAU - Novick, D AU - Novick D FAU - Rubinstein, M AU - Rubinstein M FAU - Barak, V AU - Barak V FAU - Dinarello, C AU - Dinarello C FAU - Nagler, A AU - Nagler A LA - eng PT - Journal Article PL - United States TA - J Hematother Stem Cell Res JT - Journal of hematotherapy & stem cell research JID - 100892915 RN - 0 (Glycoproteins) RN - 0 (Intercellular Signaling Peptides and Proteins) RN - 0 (Interleukin-18) RN - 0 (Receptors, Interferon) RN - 0 (Receptors, Interleukin-6) RN - 0 (interleukin-18 binding protein) SB - IM MH - Acute Disease MH - Adolescent MH - Adult MH - Child MH - Child, Preschool MH - Female MH - Glycoproteins/*blood MH - Graft Survival/*immunology MH - Graft vs Host Disease/blood/*etiology MH - Humans MH - Intercellular Signaling Peptides and Proteins MH - Interleukin-18/blood MH - Male MH - Middle Aged MH - Receptors, Interferon/blood MH - Receptors, Interleukin-6/blood MH - Stem Cell Transplantation/*adverse effects MH - Transplantation Conditioning MH - Transplantation, Homologous MH - Interferon gamma Receptor EDAT- 2002/01/19 10:00 MHDA- 2003/04/12 05:00 CRDT- 2002/01/19 10:00 PHST- 2002/01/19 10:00 [pubmed] PHST- 2003/04/12 05:00 [medline] PHST- 2002/01/19 10:00 [entrez] AID - 10.1089/152581601317210863 [doi] PST - ppublish SO - J Hematother Stem Cell Res. 2001 Dec;10(6):769-76. doi: 10.1089/152581601317210863.