Search results for "Coliti"
showing 10 items of 510 documents
Yersinia enterocolitica biotyypin 1A ja Y. enterocolitican kaltaisten bakteerikantojen geneettisen monimuotoisuuden ja lämpökestoisten enterotoksiini…
2007
L'évolution des premières métallurgies extractives du cuivre
2003
International audience; L'histoire de la métallurgie extractive débute avec le cuivre. Malgré la rareté, des témoignages archéologiques, l'étude des sites d'extraction et notamment des déchets permet depuis peu de caractériser, au moins partiellement, les premiers procédés. Ainsi, on arrive aujourd'hui à documenter ce qui fut une véritable révolution au tout début de cette métallurgie, quand, d'une activité à faible production durant le Chalcolithique et le début de l'âge du Bronze, on passe progressivement à une véritable production de masse vers le milieu et la fin de l'âge du Bronze. Les premiers procédés sont non scorifiants, ils séparent mal le stérile du métal, et conduisent à des per…
A real life comparison of the efficacy of adalimumab versus golimumab in moderate-to-severe ulcerative colitis. A multicenter experience from the sic…
2017
Introduction: Adalimumab (ADA) and golimumab (GOL) are effective in the induction and maintenance treatment of moderate-to-severe ulcerative colitis (UC). No comparable data between the 2 drugs are available up to now. Aims & Methods: We reported the Sicilian Network experience on the comparative efficacy of ADA and GOL in patients (pts) with moderate-to-severe UC. From June 2015 until April 2017, 197 consecutive pts with moderate to severe UC were treated with ADA or GOL. The efficacy was evaluated at 8 week and at the end of the follow up considering ‘‘clinical response’’ (reduction of at least 2 points of Partial Mayo Score with concomitant steroid reduction or discontinuation) and “…
Chemically induced mouse models of intestinal inflammation
2007
Animal models of intestinal inflammation are indispensable for our understanding of the pathogenesis of Crohn disease and ulcerative colitis, the two major forms of inflammatory bowel disease in humans. Here, we provide protocols for establishing murine 2,4,6-trinitro benzene sulfonic acid (TNBS)-, oxazolone- and both acute and chronic dextran sodium sulfate (DSS) colitis, the most widely used chemically induced models of intestinal inflammation. In the former two models, colitis is induced by intrarectal administration of the covalently reactive reagents TNBS/oxazolone, which are believed to induce a T-cell-mediated response against hapten-modified autologous proteins/luminal antigens. In …
Smad7 controls resistance of colitogenic T cells to regulatory T cell-mediated suppression.
2008
Background & Aims Foxp3-expressing regulatory T cells (Tregs) play a key role in the maintenance of the gut immune homeostasis, and an intact transforming growth factor (TGF)-β signaling is required for their function. In inflammatory bowel disease (IBD), the TGF-β signaling is impaired because of high expression of the inhibitory molecule Smad7. Although no intrinsic defects in Tregs function have been shown in IBD, it is still unknown whether colitogenic T cells are susceptible to Treg-mediated suppression. In this study, we have investigated whether IBD mucosal CD4+ T cells are resistant to Tregs and whether Smad7 is involved in this process. Methods IBD lamina propria mononuclear cells …
P783 Ciprofloxacin resistance in ESBL producing enterobacteriaceae colonizing the gut in IBD patients
2017
Prevalence of endodontic infection in patients with Crohn ́s disease and ulcerative colitis
2021
[Background] Previous studies have linked apical periodontitis (AP) to inflammatory bowel disease (IBD). The aim of this study was to compare the prevalence of AP and root canal treatment (RCT) in patients with ulcerative colitis (UC) and Crohn ́s disease (CD).
P030 SUCNR1 mediates inflammasome activation: Relevance in Ulcerative Colitis
2021
Abstract Background Ulcerative colitis (UC) is characterized by a diffuse, continuous, and chronic inflammation of mucosa and submucosa layers in the colon1. Inflammasome complex is involved in the intestinal homeostasis regulation, but its role in UC has not been established yet. We have recently reported that SUCNR1 mediates intestinal inflammation and fibrosis2. We aim to analyze the role of SUCNR1 in inflammasome activation and UC. Methods Intestinal resections from UC and non-IBD patients were obtained. HT29 cells were treated with succinate 1mM and an inflammasome activator cocktail (TNF-α 25ng/ml, IFN-γ 20 ng/ml and LPS 1µg/ml) for 24 hours and transfected with SUCNR1 siRNA. Chronic …
Knock out der c-Jun N-terminalen Kinase 2 (JNK2) aggraviert die Entwicklung der chronischen DSS-Colitis unabhängig von der intestinalen Zytokin-Expre…
2008
Background The c-Jun N-terminal kinase 2 (JNK2) is involved in signal transduction of inflammatory bowel diseases (IBD) and regulates the expression of pro-inflammatory cytokines. For this reason, JNK2 is considered as novel target for IBD therapy. The aim of this study was 1.) to examine the function of JNK2 applying a low dose Dextran Sulfate Sodium (DSS) model of chronic experimental colitis in JNK2 knock out mice and 2.) to analyze the expression of JNK2 dependent cytokines. Material and Methods: For induction of a mild chronic colitis, female JNK2 knockout mice (JNK2 ko) and their wildtype controls (WT2) received three cycles of DSS treatment, each consisting of 1.0 % DSS for 5 days, f…
NF-κB in inflammatory bowel disease
2008
Apart from genetic and environmental factors, the mucosal immune system of the gut plays a central role in the pathogenesis of inflammatory bowel disease (IBD). In the healthy gut, the mucosal immune system ensures the balance between pro- and anti-inflammatory mediators and thereby allows an effective defence against luminal pathogens but at the same time prevents an overwhelming immune reaction directed against the huge amount of harmless luminal antigens (for example, components of food or nonpathological bacteria). In both entities of IBD (Crohn's disease and ulcerative colitis) this immunological balance is severely impaired and shifted towards the pro-inflammatory side. The chronic mu…