PMID- 21945121 OWN - NLM STAT- MEDLINE DCOM- 20120315 LR - 20220331 IS - 1096-0023 (Electronic) IS - 1043-4666 (Linking) VI - 56 IP - 3 DP - 2011 Dec TI - TH1 and TH17 interactions in untreated inflamed mucosa of inflammatory bowel disease, and their potential to mediate the inflammation. PG - 633-40 LID - 10.1016/j.cyto.2011.08.036 [doi] AB - BACKGROUND: Crohn's disease (CD) and ulcerative colitis (UC) have been associated with a T helper1 (TH1) and a TH2 cytokine profile, respectively. Recently, a TH17 lineage has been introduced, but their role in the inflammation of CD and UC is not fully understood. AIM: To characterize the cytokines directing the TH17 cells and their interactions with TH1 cells in the mucosa of untreated patients with CD and UC. METHOD: Seventy-nine patients with untreated UC, 32 patients with untreated CD and 23 controls with no signs of colon disease were included in the study. Clinical indices for ulcerative colitis (UCDAI) and Crohn's disease (CDAI) were assessed. Biopsies for measurements of interleukin (IL)-17A, IL-23, IL-6, transforming growth factor-beta (TGF-beta), interferon-gamma (IFN-gamma), mRNA levels as well as immunohistochemical (IHC) analyses were performed. RESULTS: The gene expression for all cytokines in UC and for all cytokines except for TGF-beta in CD were significantly increased compared with the controls. The immunohistochemical analysis showed significantly increased number of IL-17A positive cells in lamina propria and epithelium of both UC and CD compared to controls. The levels of IL-17A and IL-23 mRNA were significantly higher in UC than in CD while the levels of IL-6 were significantly higher in CD compared with UC. The levels of IL-17A, IL-6 and IL-23 mRNA were associated with the disease activity score in both UC and CD. IFN-gamma was associated with the disease activity in UC, but did not reach significant level in CD. CONCLUSION: Increased levels of IL-17A and IL-23 were found in both UC and CD compared to controls. Association to the grade of inflammation and clinical activity was also observed. IL-17A and IL-23 were significantly higher in UC than in CD. TH1 and TH17 cytokines seem to act synergistically in inflammatory bowel disease (IBD) with no apparent polarization between UC and CD. CI - Copyright (c) 2011 Elsevier Ltd. All rights reserved. FAU - Olsen, Trine AU - Olsen T AD - Laboratory of Gastroenterology, Institute of Clinical Medicine, University of Tromso, and Department of Medical Gastroenterology, University Hospital of Northern Norway, 9037 Tromso, Norway. trine.olsen@fagmed.uit.no FAU - Rismo, Renathe AU - Rismo R FAU - Cui, Guanglin AU - Cui G FAU - Goll, Rasmus AU - Goll R FAU - Christiansen, Ingrid AU - Christiansen I FAU - Florholmen, Jon AU - Florholmen J LA - eng PT - Journal Article DEP - 20110925 PL - England TA - Cytokine JT - Cytokine JID - 9005353 RN - 0 (Cytokines) RN - 0 (RNA, Messenger) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Case-Control Studies MH - Cell Communication/*immunology MH - Cytokines/genetics/metabolism MH - Demography MH - Female MH - Gene Expression Regulation MH - Humans MH - Immunohistochemistry MH - Inflammation/complications/immunology/*pathology MH - Inflammatory Bowel Diseases/diagnosis/*immunology/*pathology/therapy MH - Intestinal Mucosa/*pathology MH - Male MH - Middle Aged MH - RNA, Messenger/genetics/metabolism MH - Th1 Cells/*immunology/pathology MH - Th17 Cells/*immunology/pathology MH - Young Adult EDAT- 2011/09/29 06:00 MHDA- 2012/03/16 06:00 CRDT- 2011/09/28 06:00 PHST- 2010/11/11 00:00 [received] PHST- 2011/08/23 00:00 [revised] PHST- 2011/08/25 00:00 [accepted] PHST- 2011/09/28 06:00 [entrez] PHST- 2011/09/29 06:00 [pubmed] PHST- 2012/03/16 06:00 [medline] AID - S1043-4666(11)00716-2 [pii] AID - 10.1016/j.cyto.2011.08.036 [doi] PST - ppublish SO - Cytokine. 2011 Dec;56(3):633-40. doi: 10.1016/j.cyto.2011.08.036. Epub 2011 Sep 25.