Search results for " Colitis."
showing 10 items of 292 documents
Cytomegalovirus pneumonia in patients with inflammatory bowel disease: a systematic review
2012
Summary Background Inflammatory bowel disease (IBD) patients are at increased risk of cytomegalovirus (CMV) reactivation, and although CMV pneumonia may be a fatal disease in IBD patients, little information is available on this issue. The objectives of this study were to identify risk factors for the development of CMV pneumonia in IBD patients and to find useful information to better manage this potentially fatal complication. Methods A computerized search without language restrictions was conducted using PubMed and SCOPUS. An article was considered eligible for inclusion in the systematic review if it reported detailed data on patients with IBD presenting with pneumonia due to CMV. Resul…
Diagnostic and vaccine strategies to prevent infections in patients with inflammatory bowel disease.
2016
Summary Objectives The treatment of inflammatory bowel disease (IBD) has been revolutionized by the use of immunomodulatory agents. Although these potent drugs are effective in controlling disease activity, they also cause an increased risk of new infections or reactivation of latent infections. On these premises, we aimed to provide guidance on the definitions of immunocompromised patients, opportunistic infections and the risk factors associated with their occurrence in an IBD context, and to suggest the proper screening tests for infectious diseases and the vaccination schedules to perform before and/or during therapy with immunomodulators. Methods All the most recent evidences – filtere…
Gut microbiota imbalance and chaperoning system malfunction are central to ulcerative colitis pathogenesis and can be counteracted with specifically …
2013
In this work, we propose that for further studies of the physiopathology and treatment for inflammatory bowel diseases, an integral view of the conditions, including the triad of microbiota-heat shock proteins (HSPs)-probiotics, ought to be considered. Microbiota is the complex microbial flora that resides in the gut, affecting not only gut functions but also the health status of the whole body. Alteration in the microbiota's composition has been implicated in a variety of pathological conditions (e.g., ulcerative colitis, UC), involving both gut and extra-intestinal tissues and organs. Some of these pathologies are also associated with an altered expression of HSPs (chaperones) and this is…
Pharmacology and safety of tofacitinib in ulcerative colitis.
2020
The use of Janus kinase (JAK) inhibitors is a new approach in the therapy of inflammatory diseases with immune base. Tofacitinib is one of these inhibitors targeting JAK1 and JAK3, and its efficacy has been demonstrated in the treatment of moderate to severe ulcerative colitis (UC). It is a small synthetic molecule administered orally, with a fast bioavailability and elimination rate, predictable pharmacokinetics and lack of immunogenicity, which are convenient characteristics for both efficacy and safety. This article reviews the pharmacological characteristics of tofacitinib and its safety profile.
Risk of new or recurrent cancer under immunosuppressive therapy in patients with IBD and previous cancer.
2013
International audience; OBJECTIVE: To explore the risk of new or recurrent cancer among patients with IBD and previous cancer, exposed or not to immunosuppressants. DESIGN: Among the 17 047 patients of the CESAME prospective observational cohort who were enrolled from May 2004 to June 2005, and followed-up until December 2007, we identified 405 patients with cancer diagnosed previous to study entry. We calculated the rates of incident cancer in patients with or without previous cancer, and we assessed by survival analysis and nested case-control study the impact of immunosuppressants on the risk of incident new or recurrent cancer in patients with previous cancer. RESULTS: The rate of incid…
P293 Loss of response after first-line biologic therapy in patients with inflammatory bowel disease: practical approach and management
2020
Abstract Background Anti-tumour necrosis factors (anti-TNFs) have greatly improved therapeutic strategies for the treatment of inflammatory bowel diseases (IBDs). However, a significant number of patients do not respond or lose response over time (LOR). The aim of this retrospective prospective study was to evaluate patients (patients) treated with anti-TNFs as first-line treatment, with subsequent LOR, defined as recurrence of disease activity during maintenance therapy. We determine the prevalence of LOR and its management. Methods Three-hundred forty patients with IBDs were included: 65% had Crohn’s disease and 35% ulcerative colitis. Mean age at diagnosis was 31,5 years and medium time …
Confocal laser endomicroscopy is a new imaging modality for recognition of intramucosal bacteria in inflammatory bowel disease in vivo.
2011
International audience; BACKGROUND AND OBJECTIVES: Interaction of bacteria with the immune system within the intestinal mucosa plays a key role in the pathogenesis of inflammatory bowel disease (IBD). The aim of the current study was to develop a fluorescein-aided confocal laser endomicroscopy (CLE) method to visualise intramucosal enteric bacteria in vivo and to determine the involved mucosal area in the colon and ileum in patients with ulcerative colitis (UC) and Crohn's disease (CD). METHODS: Initially, E coli strains expressing enhanced green fluorescent protein (pEGFP) were endomicroscopically imaged in mice. In addition, ex vivo and in vivo imaging of fluorescent human enteric bacteri…
Endoscopic surveillance in ulcerative colitis: smart biopsies do it better.
2007
Patients with ulcerative colitis (UC) have a significantly higher risk for the development of colitisassociated colorectal cancer. Endoscopic surveillance is recommended. The growth pattern of dysplastic tissue is often multifocal and flat. Thus, significant lesions might be overlooked. Multiple random biopsies are recommended, but cannot eliminate the possibility of missed cancers with severe consequences for the patient. Chromoendoscopy with methylene blue or indigo carmine can unmask flat lesions and may solve this problem. In addition, confocal laser endomicroscopy enables in vivo histology with subcellular resolution during ongoing colonoscopy and leads to highly selected mucosal biops…
ADVANCED ENDOSCOPIC IMAGING FOR SURVEILLANCE FOR DYSPLASIA AND COLORECTAL CANCER IN INFLAMMATORY BOWEL DISEASE: COULD THE PATHOLOGIST BE FURTHER HELP…
2014
Patients with inflammatory bowel disease (IBD) have an increased risk of developing intestinal cancer. The magnitude of that increased risk as well as how best to mitigate it remain a topic of ongoing investigation in the field. It is important to quantify the risk of colorectal cancer in association with IBD. The reported risk varies widely between studies. This is partly due to the different methodologies used in the studies. Because of the limitations of surveillance strategies based on the detection of dysplasia, advanced endoscopic imaging and techniques involving the detection of alterations in mucosal antigens and genetic abnormalities are being investigated. Development of new bioma…
Dextran sulfate sodium leads to chronic colitis and pathological angiogenesis in Endoglin heterozygous mice
2010
Pathological angiogenesis is an intrinsic component of chronic intestinal inflammation, which results in remodeling and expansion of the gut microvascular bed. Endoglin is essential for endothelial cell function and physiological angiogenesis. In this study we investigated its potential role in the regulation of inflammation by testing the response of Endoglin heterozygous (Eng(+/-)) mice to experimental colitis.C57BL/6 Eng(+/-) and littermate control mice drank water supplemented with 3% dextran sulfate sodium (DSS) for 5 days and were monitored for up to 26 days for clinical signs of colitis. Inflammation, crypt damage, and angiogenic index were scored on histological sections of distal c…