PMID- 24115947 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20140624 LR - 20220409 IS - 1664-3224 (Print) IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 4 DP - 2013 Oct 8 TI - Interleukin-18 and IL-18 binding protein. PG - 289 LID - 10.3389/fimmu.2013.00289 [doi] LID - 289 AB - Interleukin-18 (IL-18) is a member of the IL-1 family of cytokines. Similar to IL-1beta, IL-18 is synthesized as an inactive precursor requiring processing by caspase-1 into an active cytokine but unlike IL-1beta, the IL-18 precursor is constitutively present in nearly all cells in healthy humans and animals. The activity of IL-18 is balanced by the presence of a high affinity, naturally occurring IL-18 binding protein (IL-18BP). In humans, increased disease severity can be associated with an imbalance of IL-18 to IL-18BP such that the levels of free IL-18 are elevated in the circulation. Increasing number of studies have expanded the role of IL-18 in mediating inflammation in animal models of disease using the IL-18BP, IL-18-deficient mice, neutralization of IL-18, or deficiency in the IL-18 receptor alpha chain. A role for IL-18 has been implicated in several autoimmune diseases, myocardial function, emphysema, metabolic syndromes, psoriasis, inflammatory bowel disease, hemophagocytic syndromes, macrophage activation syndrome, sepsis, and acute kidney injury, although in some models of disease, IL-18 is protective. IL-18 plays a major role in the production of interferon-gamma from T-cells and natural killer cells. The IL-18BP has been used safely in humans and clinical trials of IL-18BP as well as neutralizing anti-IL-18 antibodies are in clinical trials. This review updates the biology of IL-18 as well as its role in human disease. FAU - Dinarello, Charles A AU - Dinarello CA AD - Department of Medicine, University of Colorado Denver , Aurora, CO , USA ; Department of Medicine, University Medical Center Nijmegen , Nijmegen , Netherlands. FAU - Novick, Daniela AU - Novick D FAU - Kim, Soohyun AU - Kim S FAU - Kaplanski, Gilles AU - Kaplanski G LA - eng GR - R01 AI015614/AI/NIAID NIH HHS/United States GR - R01 AR045584/AR/NIAMS NIH HHS/United States GR - R56 AI015614/AI/NIAID NIH HHS/United States PT - Journal Article PT - Review DEP - 20131008 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 PMC - PMC3792554 OTO - NOTNLM OT - autoimmune diseases OT - inflammasomes OT - inflammation OT - interleukin-1 OT - macrophages EDAT- 2013/10/12 06:00 MHDA- 2013/10/12 06:01 PMCR- 2013/01/01 CRDT- 2013/10/12 06:00 PHST- 2013/05/31 00:00 [received] PHST- 2013/09/04 00:00 [accepted] PHST- 2013/10/12 06:00 [entrez] PHST- 2013/10/12 06:00 [pubmed] PHST- 2013/10/12 06:01 [medline] PHST- 2013/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2013.00289 [doi] PST - epublish SO - Front Immunol. 2013 Oct 8;4:289. doi: 10.3389/fimmu.2013.00289.