PMID- 15548995 OWN - NLM STAT- MEDLINE DCOM- 20050331 LR - 20210102 IS - 1065-6251 (Print) IS - 1065-6251 (Linking) VI - 11 IP - 6 DP - 2004 Nov TI - Interleukin-18: recent advances. PG - 405-10 AB - PURPOSE OF REVIEW: Interleukin-18 (IL-18) has potent immunomodulatory effects. It is the only cytokine with a unique capacity to induce T helper 1 or T helper 2 polarization, depending on the immunologic context. Serum levels of IL-18 are increased in many human diseases and it has been implicated in the pathogenesis of several immune-mediated processes. Some of the recent key advances in the immunobiology of IL-18 are discussed in this review. RECENT FINDINGS: Recent data from several laboratories have shed light on the structure of IL-18; the signaling cascades that are initiated; and its role on modulating T cells, dendritic cells, and natural killer cell function. Several new reports have expanded and delineated the role of IL-18 in a multitude of diseases, but only recent advances in the role of IL-18 in three disease processes (acute graft-versus-host disease, insulin-dependent diabetes, and sepsis), where it appears to play paradoxic roles are discussed. SUMMARY: Although emerging data shed more light on the complex role of IL-18 in immune reactions, they also pose more questions. Given the pleiotropic, complex, and at times paradoxic effects of IL-18 in various disease processes, better understanding of its immunobiology might lead to the development of IL-18 and/or its antagonists as therapeutic agents against immune-mediated diseases. FAU - Reddy, Pavan AU - Reddy P AD - Department of Internal Medicine, University of Michigan Comprehensive Cancer Center, Ann Arbor, Michigan 48109-0942, USA. reddypr@umich.edu LA - eng PT - Journal Article PT - Review PL - United States TA - Curr Opin Hematol JT - Current opinion in hematology JID - 9430802 RN - 0 (Interleukin-18) SB - IM MH - Animals MH - Diabetes Mellitus, Type 1/immunology MH - Humans MH - Inflammation/immunology MH - Interleukin-18/*immunology MH - Sepsis/immunology MH - Signal Transduction/*immunology MH - Th1 Cells/*immunology MH - Th2 Cells/*immunology RF - 81 EDAT- 2004/11/19 09:00 MHDA- 2005/04/01 09:00 CRDT- 2004/11/19 09:00 PHST- 2004/11/19 09:00 [pubmed] PHST- 2005/04/01 09:00 [medline] PHST- 2004/11/19 09:00 [entrez] AID - 00062752-200411000-00007 [pii] AID - 10.1097/01.moh.0000141926.95319.42 [doi] PST - ppublish SO - Curr Opin Hematol. 2004 Nov;11(6):405-10. doi: 10.1097/01.moh.0000141926.95319.42.