PMID- 21864160 OWN - NLM STAT- MEDLINE DCOM- 20120202 LR - 20220409 IS - 1557-7465 (Electronic) IS - 1079-9907 (Linking) VI - 31 IP - 10 DP - 2011 Oct TI - Interleukin-18: a mediator of inflammation and angiogenesis in rheumatoid arthritis. PG - 745-51 LID - 10.1089/jir.2011.0050 [doi] AB - Interleukin-18 (IL-18) is a highly regulated inflammatory cytokine that is elevated in synovial tissues and synovial fluids of patients with rheumatoid arthritis (RA) compared with patients with osteoarthritis (OA) and patients with other arthropathies. Within the RA joint, IL-18 can contribute to the inflammatory process by inducing leukocyte extravasation through upregulation of endothelial cell adhesion molecules, the release of chemokines from RA synovial fibroblasts, and directly as a monocytes, lymphocyte, and neutrophil chemoattractant. IL-18 can also help maintain and develop the inflammatory pannus by inducing endothelial cell migration and angiogenesis. IL-18 does this directly by binding and activating endothelial cells and indirectly by inducing RA synovial fibroblasts to produce angiogenic chemokines and vascular endothelial growth factor. IL-18 is present in RA synovial fluid in high levels, where it functions as an angiogenic mediator and leukocyte chemoattractant. IL-18 mediates all these inflammatory processes by binding to its receptor, IL-18 receptor, and initiating the activation of different signaling cascades leading to changes in target cells gene expression and behavior. IL-18 has been identified as a potential therapeutic target in the treatment of RA. FAU - Volin, Michael V AU - Volin MV AD - Department of Microbiology and Immunology, Chicago College of Osteopathic Medicine, Midwestern University, Downers Grove, Illinois, USA. FAU - Koch, Alisa E AU - Koch AE LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20110824 PL - United States TA - J Interferon Cytokine Res JT - Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research JID - 9507088 RN - 0 (Angiogenesis Inducing Agents) RN - 0 (Chemokines) RN - 0 (Interleukin-18) RN - 0 (Receptors, Interleukin-18) SB - IM MH - Angiogenesis Inducing Agents/*immunology MH - Animals MH - Arthritis, Rheumatoid/*immunology/pathology/therapy MH - Cell Movement/*immunology MH - Chemokines/immunology MH - Endothelial Cells/*immunology/pathology MH - Fibroblasts/immunology/pathology MH - Gene Expression Regulation/immunology MH - Humans MH - Inflammation/immunology/pathology/therapy MH - Interleukin-18/*immunology MH - Neovascularization, Pathologic/*immunology/pathology/therapy MH - Receptors, Interleukin-18/immunology MH - Signal Transduction/immunology MH - Synovial Membrane/immunology/pathology EDAT- 2011/08/26 06:00 MHDA- 2012/02/03 06:00 CRDT- 2011/08/26 06:00 PHST- 2011/08/26 06:00 [entrez] PHST- 2011/08/26 06:00 [pubmed] PHST- 2012/02/03 06:00 [medline] AID - 10.1089/jir.2011.0050 [doi] PST - ppublish SO - J Interferon Cytokine Res. 2011 Oct;31(10):745-51. doi: 10.1089/jir.2011.0050. Epub 2011 Aug 24.