The use of an interleukin (IL) 17A inhibitor resulted in gut microbial dysbiosis and features of subclinical intestinal inflammation in a subgroup of psoriatic arthritis (PsA) and spondyloarthritis (SpA) patients, according to a multidisciplinary, collaborative study across several institutions published in Arthritis & Rheumatology.1 Understanding the downstream effects of these perturbations is an important step…
A growing body of research is elucidating the role of intestinal microbiota in several autoimmune diseases, including rheumatoid arthritis (RA). Research published in December 2018 Arthritis & Rheumatology increases our understanding of the “extent and nature of mucosal immune activation during preclinical arthritis.”1 The research objective, according to the report, was to “dissect intestinal mucosal immune…
Gut microbiota may provide insight into important environmental triggers for autoimmune diseases. New research in mice indicates that intestinal dysbiosis triggers a mucosal immune response that stimulates T and B cells, which are critical to the development of inflammatory arthritis…
NEW YORK (Reuters Health)—Patients with inflammatory bowel disease (IBD) show imbalance in their fungal intestinal microbiota, according to new findings. “The fungal microbiota is a new actor to take into account in the pathogenesis of IBD and potentially in other diseases,” Dr. Harry Sokol of Hospital Saint-Antoine in Paris, an author of the new study,…
Gut bacteria may hold clues to breakthrough rheumatic disease treatments
This study affirms that dysbiosis is a feature of rheumatoid arthritis (RA) and suggests that specific therapies may differentially modulate the gastrointestinal microbiota in RA.
Background & Objectives Rheumatoid arthritis (RA) is a chronic autoimmune disease associated with immune responses to the patient’s own antigens and characterized by inflammation and substantial joint destruction. Prevotella copri, a gut commensal bacterium, has been reported to be an immune-relevant organism in individuals with RA. This study sought to evaluate antibody responses to anti-P….
PHILADELPHIA—Approximately 100 research abstracts on axial spondyloarthritis (axSpA) were accepted for presentation at ACR Convergence 2022. It is exciting to see a wealth of research on axSpA being undertaken worldwide. Here, we highlight important points from 10 of these studies. 1. Abstract 0378: Prevalence of Axial Spondyloarthritis (axSpA) in Patients Treated for Chronic Back Pain…
McMahan et al. examined how abnormal gastrointestinal (GI) transit may contribute to GI severity and symptoms in patients with systemic sclerosis (SSc). About 90% of people with SSc have GI tract involvement, and understanding the connection between GI symptoms, their severity and abnormal GI transit may permit targeted therapeutic approaches for these patients.
The etiology of psoriatic arthritis (PsA) is poorly understood but current evidence supports an interaction between genetic and environmental factors that coalesce to promote local tissue inflammation.1-3 The pivotal cytokines that underlie the local inflammatory response in a wide range of tissues are interleukin (IL) 23, IL-17 and tumor necrosis factor (TNF).4 The central contribution…