Active clinical trials for "Colitis, Ulcerative"

Ulcerative colitis (UC) is a chronic inflammatory condition of unknown aetiology, characterized by a diffuse confluent mucosal inflammation of the colon starting from the rectum with a relapsing and remitting course. Conventional endoscopy was thought to be a reliable parameter of disease activity, but microscopic inflammation can persist despite normal mucosal findings. Histologically detectable inflammation is associated with a greater risk of subsequent relapse. A flare in UC activity is difficult to predict, but a simple, easily measured biological marker of relapse would be important in guiding the most appropriate therapy. Recent technological advances in fiber optics, light sources, detectors, and molecular biology have stimulated development of numerous optical methods that promise to significantly improve our ability to evaluate human epithelium in vivo. These methods, collectively termed "optical biopsy," are nondestructive in situ assays of mucosal histopathology using light that can provide instantaneous tissue assessment. Narrow band imaging (NBI) is a novel technique that enhances the diagnostic capability of endoscopes in characterising tissues by using filters in a redgreenblue (RGB) sequential illumination system. This results in improved mucosal contrast and detail. UC always involves the distal colon and activity is usually greatest in rectosigmoid area. This makes evaluation of the rectum and sigmoid an attractive marker in patients with UC. Unlike serum and faecal markers, endoscopic assessment of the mucosa is unlikely to be affected by systemic disease and would be acceptable test for patients and physicians. We plan to evaluate THE rectosigmoid mucosa in patients with UC by flexible endoscope using both white light and NBI endoscopy. These patients will be followed by for one year or until they relapse, whichever comes first. The aim of our study is to develop endoscopic biomarkers to predict relapse in acute and quiescent UC.

The objectives of this study are to investigate how oral 5-ASA drugs have been used in the condition without symptoms such as abdominal pain or diarrhea/bloody stool (remission stage), or in the transition from the condition with symptoms such as abdominal pain or diarrhea/bloody stool (active stage) to the remission stage in ulcerative colitis and to study how many patients will be able to maintain the remission stage during the observation period and how many times the patients will experience the active stage (relapse), as well as how symptoms will change during the observation period to discover better treatment plans.

The purpose of this study is to characterize the treatment patterns associated with biologics agents use or non-biological therapy in participants with moderate to severe Ulcerative Colitis (UC) and Crohn's Disease (CD).

A recent multicentre randomised controlled trial compared autofluorescence imaging (AFI) with CE for dysplasia detection in colonoscopy surveillance of patients with longstanding UC (FIND-UC). In this study, CE detected significantly more dysplastic lesions per patient compared with AFI. It is unclear whether this increased dysplasia detection also translates to a reduction of dysplasia at follow-up colonoscopy. The aim of this pre-specified study is therefore to prospectively determine whether there is a difference in dysplasia detection at follow-up colonoscopy between UC patients who were randomized to AFI or CE at index colonoscopy for the FIND-UC trial.

Procedure is offered today to most patients with chronic ulcerative colitis (CUC) or familial adenomatous polyposis (FAP) who are candidates for total proctocolectomy. While high rates of successful pouch surgery are reported, there is a significant long-term risk of pouch-related complications including ileo-anal anastomotic separation and stricture, pouch-perineal and pouch-vaginal fistula, pouchitis, pelvic sepsis, small bowel obstruction, and pouch dysfunction. Despite recent advances in treatment of these complications by medical and surgical means, these problems can still lead to pouch failure and pouch excision. The long-term rate of pouch excision is reported in large series to range from 5.3% to 24%. Moreover, the burden of quality of life impairment on patients with these complications is immense. Pouch excision operations are technically difficult with substantial morbidity. This study aimed to investigate the indications for pouch excision, the number of salvage operations prior to these excisions and complications of pouch excision surgeries.

The purpose of the study is to determine whether a new colonoscopic viewing technique called Linked color imaging(LCI) helps endoscopists detect more dysplasia lesions in ulcerative colitis patients than conventional colonoscopy using white light alone.

The purpose of this study is to assess the prevalence of major structural birth defects in infants of female participants with ulcerative colitis (UC) or Crohn's disease (CD) exposed to vedolizumab during pregnancy, compared to participants with UC or CD exposed to other biologic agents.

The main aim of this study is to check the disease activity in people with moderate to severe ulcerative colitis and Crohn's disease. Participants will complete questionnaires about their disease and quality of life on Day 1 clinic visit. They will do this during a standard scheduled appointment with their doctor. Some of this study will also involve collecting information about participants from their medical records.

Whether the perceived changes in management of Acute Severe Ulcerative Colitis during the COVID pandemic are widespread, and whether they have any impact on patient outcomes

The aim of the non-interventional study is to document the daily doses in acute and remission therapy, the frequence of doses (1, 2, 3 or 4 times daily), when rectal dosage forms are added and, when and how long steroids are given.