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Characterization of the Intestinal Microbiota in Patients With Inflammatory Bowel Disease and/or Spondyloarthritis and Study of the Impact of an Anti-TNF Alpha Therapy — MIST  

Ulcerative Colitis Clinical Trial

Official title:
Characterization of the Intestinal Microbiota in Patients With Inflammatory Bowel Disease and/or Spondyloarthritis and Study of the Impact of an Anti-TNF Alpha Therapy

Clinical Trial Summary

Spondyloarthritis and inflammatory bowel diseases are common diseases, frequently met together in overlap syndromes. Their physiopathology remains puzzling. A strong role of gut microbiota has been recently put forward to explain the development of inflammatory bowel diseases, and is suspected to play an important role in rheumatoid diseases. Anti-Tumor Necrosis Factor (anti-TNF) alpha are effective and safe drugs in the treatment of both digestive and rheumatoid inflammatory diseases. The way they work is unclear, and the clinical response to this treatment is variable. A better understanding of the pathophysiology of inflammatory bowel diseases and of the action of anti-TNF alpha is essential to an optimized care. Our hypothesis is that the efficacy of anti-TNF alpha in spondyloarthritis and in inflammatory bowel diseases is at least partly due to its restoring action of homeostasis at the interface between gastrointestinal mucosa and intestinal microbiota, either by primary action on the digestive epithelium, allowing it to regain its control and tolerance functions toward mucosal microbiota, either by direct action on the intestinal microbiota, via an inter-reigns regulation. The main objective of our study is to assess quantitative and qualitative changes in fecal microbiota before (D0) and 3 months after initiation of anti-TNF alpha.

Clinical Trial Description

The investigators propose to conduct an exploratory study, on 10 spondyloarthritis and 20 inflammatory bowel diseases patients (10 Crohn's disease and 10 ulcerative colitis (UC), in which a first anti-TNF alpha treatment is indicated. At D0 and M3, intestinal microbiota will be studied by DNA16S sequencing and qPCR, via a stool sampling. Volatile Organic Compounds (VOCs) profile will be obtained by mass spectrometry. Blood lymphocytes profile will be obtained by flux cytometry. In addition, a colonoscopy will be performed at D0 for UC patients, with an endoscopic and histological assessment. A second short colonoscopy will be performed for UC patients at M3. At each time, clinical assessment will be performed. A mirror group of 10 spondyloarthritis and 20 inflammatory bowel diseases patients (10 Crohn's disease and 10 ulcerative colitis), in which an "all but anti-TNF alpha or biotherapy" treatment is indicated will be included to distinguish the specific effects on microbiota of anti-TNF alpha. 12 patients by group will be included at M0 by anticipating that some patients will stop their treatment between M0 and M3, and consequently will be excluded from M3 sampling and from final analysis. Final analysis will be performed on 10 patients by group. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03359642
Study type Interventional
Source University Hospital, Bordeaux
Contact
Status Completed
Phase N/A
Start date June 5, 2018
Completion date September 16, 2021
View Details
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