Objective: Ankylosing spondylitis (AS) is associated with clinical and subclinical mucosal inflammation, suggesting that commensal bacteria contribute to the pathogenesis of the disease.
Methods: The frequency of Th1 cells reacting towards conserved Escherichia coli (E coli) proteins and pathogenicity factors in peripheral blood mononuclear cells (PBMNC) and synovial fluid mononuclear cells (SFMNC) of patients with AS and those with rheumatoid arthritis (RA) was determined. PBMNC from healthy individuals were included as controls.
Results: Higher frequencies of Th1 cells reacting to conserved E coli proteins were observed in SFMNC and, to a lesser extent, in PBMNC of patients with AS compared with patients with RA (SFMNC, p<0.01; PBMNC, p<0.05). In contrast, the frequencies of cytomegalovirus- and staphylococcal enterotoxin B (SEB)-induced Th1 cells did not differ between patients with AS and those with RA in SFMNC, and SEB-induced Th1 cell frequencies in PBMNCs were even higher in patients with RA than in those with AS (p<0.05).
Conclusions: The high frequency and enrichment of E coli-specific CD4 T cells in the inflamed joints of patients with AS but not those with RA suggests that commensal bacteria are relevant antigens in AS that might trigger the disease.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1136/annrheumdis-2012-201404 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Screening of high glucose tolerant Escherichia coli for L-valine fermentation by autonomous evolutionary mutation.
Appl Microbiol Biotechnol
January 2025
College of Marine and Bioengineering, Yancheng Institute of Technology, Yancheng, 224051, PR China.
L-valine holds wide-ranging applications in medicine, food, feed, and various industrial sectors. Escherichia coli, a pivotal strain in industrial L-valine production, features a concise fermentation period and a well-defined genetic background. This study focuses on mismatch repair genes (mutH, mutL, mutS, and recG) and genes associated with mutagenesis (dinB, rpoS, rpoD, and recA), employing a high-glucose adaptive culture in conjunction with metabolic modifications to systematically screen for superior phenotypes.
View Article and Find Full Text PDFPhotoinitiated Thiol-Ene Click Reaction for Preparation of Highly Adhesive and Mechanically Stable Silicone Coatings for Marine Antifouling and Anticorrosion.
ACS Appl Mater Interfaces
January 2025
Tianjin Key Laboratory for Marine Environmental Research and Service, School of Marine Science and Technology, Tianjin University, Tianjin 300072, China.
Marine biofouling and corrosion have become the main problems affecting the development of the marine industry. Silicone-based coatings have been widely used for antifouling and anticorrosion due to their low surface energy. However, the poor adhesion and low mechanical stability of these materials limit their application in complex marine environments.
View Article and Find Full Text PDFA synthetic biology approach for identifying de-SUMOylation enzymes of substrates.
J Integr Plant Biol
January 2025
Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China.
A synthetic biology approach using a robust reconstitution system in Escherichia coli enables the identification of plant ubiquitin-like proteases responsible for removing the small ubiquitin-like modifier (SUMO) post-translational modifications from specific protein substrates.
View Article and Find Full Text PDFBackground: When haemolytic anaemia, thrombocytopenia and renal failure are present, a thrombotic microangiopathic (TMA) condition should be suspected. We describe the various differential diagnoses of primary TMA syndromes, their clinical findings, clinical workup and treatment.
Case Presentation: A previously healthy man in his fifties was hospitalised with anaemia, thrombocytopenia, bilirubinaemia and acute renal failure.
Multifunctions of Sustainable Chondroitin Sulfates with Predominant Subtypes and Low Molecular Weights on Neurite Outgrowth.
Biomacromolecules
January 2025
School of Life Science and Health Engineering, Jiangnan University, Wuxi 214122, China.
Three chondroitin sulfate (CS) analogues with predominant subtypes (A, C, and E) were prepared from engineered K4 combined with regioselective sulfation. CS with the designed sulfates as the main components was characterized by nuclear magnetic resonance spectroscopy, elementary analysis, and disaccharide analysis. CS prepared from the native or degraded capsular polysaccharide had molecular weights of 1.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!