Spondyloarthritis

The MICROSPA project aims to compare gut microbiota, serum cytokines, and PBMC of patients suffering from Crohn's disease (CD) associated or not to spondylarthritis (SpA). 3 groups of patients will be analyzed: patients suffering from CD alone, patients suffering from SpA alone, patients suffering from CD and SpA. One group of healthy controls will be analysed as a comparator. Fecal microbiota will be determined by bacteriome, virome and fungome NGS sequencing

This is an observational study of a prospective cohort of guselkumab-initiating Crohn's Disease (CD) and Ulcerative Colitis (UC) patients to identify new or incident spondyloarthritis. This study will include adult patients aged 18-75 with IBD who are undergoing guselkumab intravenous or subcutaneous induction over a 1-year timeframe.

The aim of this study is to constitute a biobank for patients followed in the Rheumatology center of Toulouse University Hospital for a chronic inflammatory rheumatism including rheumatoid arthritis (RA), spondyloarthritis(SpA), and psoriatic arthritis (PsA) or a chronic bone disease including osteoporosis in order to identify biomarkers associated with therapeutic response.

Spondyloarthritis (SpA) is a group of inflammatory rheumatic disorders that mainly manifested by inflammatory pain of the spine, pelvis and sometimes limbs. Classically, SpA has been classified into several subtypes, such as ankylosing spondylitis (AS), psoriatic arthritis (PsA), inflammatory bowel disease (IBD)-associated. Several studies have shown specific changes in the gut microbiota during SpA. A recent, uncontrolled study suggested that the therapeutic response to anti-TNFα (Tumor Necrosis Factor) therapy could be predicted by analysis of the gut microbiota. The purpose of the study MEDIBIOTE 3 is to confirm that in SpA, the composition of the intestinal microbiota at the initiation of treatment is predictive of the response to treatment with biotherapy (anti-TNFα / anti-IL17).

The primary objective of the study aims to compare the biodiversity of intestinal microbiota between spondylarthritis (SPA) or rheumatoid arthritis (RA) patients and healthy volunteers, by microbiota DNA sequencing in order to further and respond the prior results, which suggested that there is a specific dysbiosis for each of the 2 diseases. A comparative analysis will allow to identify the biomarkers of the specific bacteria.

Ultra-processed foods (UPF) represent one of the mainstays of today's diet. They are defined by the NOVA classification system. It was demonstrated that UPF consumption was associated with activity of inflammatory bowel diseases with underlying mechanisms not fully identified yet. It is suspected that UPF constituents could modify the gut microbiota, increase intestinal barrier permeability and directly engage immune surveillance systems, effects that could individually or synergistically increase the risk of immunomediated diseases. As some pathophysiological mechanisms are shared among IBD and rheumatic diseases, we have wondered if UPF consumption could be associated with increased risk of rheumatic disease and/or with their activity. Our primary aim will be to study the pattern of UPF consumption in patients with rheumatic diseases. Our secondary objectives will be to study the activity of diseases according to UPF consumption.

This study aims to study the inflammatory response in various forms of arthritis.

The primary objective of this case-control study aims to explore the role of bacterium Ruminococcus gnavus (R. gnavus) with intestinal biopsy and faecal sampling in the initiation and the development of spondyloarthritis (SPA) in comparison with health control subjets (patients without chronic disease but have indication to digestive endoscopy).

This is a research study involving humans, of the interventional type with minimal risks and constraints (RIPH2). It is a multicentric, non randomized prospective study aiming to better understand the mechanisms of the response to anti-IL-23 biologics in Spondyloarthritis patients attending the rheumatology department of Cochin, Saint-Antoine, Henri-Mondor hospitals (APHP) and Maison-Blanche Hospital (Reims).

Patients with chronic inflammatory diseases (CID) followed in gastroenterology, dermatology and rheumatology have physiopathological, epidemiological and therapeutic focal points. The pathologies concerned are inflammatory bowel diseases (IBD - Crohn's disease \[MC\] and ulcerative colitis \[RCH\]), chronic inflammatory skin diseases (psoriasis or Verneuil's disease) and chronic inflammatory rheumatic diseases (rheumatoid arthritis \[RA\] and spondyloarthritis \[SpA\] including psoriatic arthritis \[PsA\]). Presenting one of these diseases is associated with a higher risk of having a second inflammatory pathology, whether the latter is ophthalmological, dermatological, rheumatological or gastroenterological. An association of extra-articular manifestations is observed in 10 to 30% of patients with SpA, and an association of extra-intestinal manifestations is observed in approximately 30% of patients with IBD. No common database for chronic systemic inflammatory diseases currently exists in France.

This protocol describes a 6-month randomised, controlled exercise trial in patients with axial spondyloarthritis (axSpA) with re-randomization after 3-months. The primary outcome of the trial (disease activity) will be evaluated at 3-months. The exercise programme on trial comprises high intensity interval training (HIIT), muscular strength exercise and aerobic physical activity sessions of specified duration, frequency, and intensity. It also includes brief knowledge videos to empower the patient. The intervention is remotely delivered by the SPARK application with personalised follow-up including monitoring to ensure exercise progression and adherence to exercise intensity. The SPARK application is built on a platform delivered by ABEL Technologies (trademark) and is customised for patients with axSpA.

Although biologic therapy have revolutionized the treatment of Spondyloarthrtitis (SpA), many patients do not experience complete relief of SpA related complaints. It has been established that patients with SpA have an altered composition of microorganisms (microbiota) in the gut compared to healthy controls, and that this correlates to disease activity and respons to therapy. The goal of this randomized double-blind study is to evaluate the efficacy of fecal microbiota transplantation (FMT) in patients with axial SpA with a suboptimal effect of biologic therapy. The main questions it aims to answer are: * Can FMT reduce disease activity in axial SpA? * Can FMT alleviate pain and reduce fatigue in axial SpA? * Is the composition of microorganisms restored to normal in patients with SpA after a treatment with FMT? Participants will receive a single treatment in the form of an enema with either donor FMT or placebo at baseline. The primary endpoint will be evaluated after 90 days, but efficacy and safety will be monitored from baseline until 365 days.

Spondyloarthritis (SpA) is a group of chronic inflammatory pathologies whose progression over time is poorly defined, and in particular the clinical and instrumental elements that can predispose to a condition of disease severity are not completely known. It would be important to have an idea of what the predisposing factors are, possibly already at baseline, and possibly also at follow up, of severe disease, so as to be able to act early with more aggressive and targeted therapies on these patients, so as to achieve remission.