PubMed Journals Articles About "Early Rheumatoid Arthritis Characterised Distinct Transient Synovial Fluid" RSS

13:08 EST 9th December 2019 | BioPortfolio

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Showing "Early rheumatoid arthritis characterised distinct transient synovial fluid" PubMed Articles 1–25 of 14,000+

Molecular characterisation of the synovial fluid microbiome in rheumatoid arthritis patients and healthy control subjects.

The presence and identity of bacterial and fungal DNA in the synovial fluid of rheumatoid arthritis (RA) patients and healthy control subjects was investigated through amplification and sequencing of the bacterial 16S rRNA gene and fungal internal transcribed spacer region 2 respectively. Synovial fluid concentrations of the cytokines IL-6, IL-17A, IL22 and IL-23 were determined by ELISA.

Dichotomy of Local Th1- and Systemic Th2/Th3-Dependent Types of Immune Response in Rheumatoid Arthritis.

Biomarkers of activity of rheumatoid arthritis were analyzed in the blood serum and synovial fluid of affected joints in 84 patients. Significant differences between the serum and synovial fluid levels were revealed for 10 of 17 analyzed biomarkers; the levels of IgM and proinflammatory cytokines TNFα, IL-1β, IFNγ, and IL-6 were higher in the synovial fluid. The concentration of IL-10 in the synovial fluid was also elevated. In the peripheral blood, the content of antinuclear antibodies, circulating immu...

Computational Deconvolution of Synovial Tissue Cellular Composition: Presence of adipocytes in synovial tissues decreased during arthritis pathogenesis and progression.

Osteoarthritis (OA) and Rheumatoid arthritis (RA) are the most common forms of arthritis. The synovial tissue is the major site of inflammation of OA and RA, and consists of diverse cells. Synovial tissue cell composition changes during arthritis pathogenesis and progression have not been systematically characterized and may provide critical insights into disease processes. In this study we aimed at systematically examining cellular changes in synovial tissues.

Characterization of cell-derived microparticles in synovial fluid and plasma of patients with rheumatoid arthritis.

Microparticles (MP) are proposed to play a role in the pathogenesis of rheumatoid arthritis (RA). This study aimed to profile cell lineage-specific MP in patients with RA, osteoarthritis (OA), and healthy controls (HC) in synovial fluid and circulation. Patients with RA (n = 40), OA (n = 30) and HC (n = 33) were included. Cell-free synovial fluid (SF) and platelet-poor plasma samples were stained with annexin V APC and antibodies against CD45, CD20, CD14, CD4, CD8, CD66b, and CD61 for multicolor...

miR-22 inhibits synovial fibroblasts proliferation and proinflammatory cytokine production in RASF via targeting SIRT1.

Rheumatoid arthritis synovial fibroblasts (RASF) play an essential role in the pathogenesis of rheumatoid arthritis (RA). This study aimed to investigate the biological effects of miR-22 on RASFs.

The novel cytokine Metrnl/IL-41 is elevated in psoriatic arthritis synovium and induced at the enthesis.

Meteorin-like(IL-41), is a novel cytokine that is thought to be immunoregulatory and is highly expressed in psoriatic skin. We investigated IL-41 protein expression in synovial tissue in RA(Rheumatoid Arthritis), PsA(Psoriatic Arthritis) and OA(Osteoarthritis) patients and evaluated IL-41 production from healthy enthesis samples, as the enthesis represent the primary inflammatory lesion in PsA. IL-41 was measured in synovial fluid from PsA, RA and OA patients. Synovial biopsies were stained for IL-41 by imm...

Expanding the citrullinome of synovial fibrinogen from rheumatoid arthritis patients.

Citrullination is a post-translational protein modification, which is associated with inflammation in general and is thought to play an important pathogenic role in rheumatoid arthritis (RA). Here a mass spectrometry-based proteomics approach was applied to identify citrullination sites in synovial fluid fibrinogen from four RA patients. In general, high disease activity correlated with increased number of identified citrullination sites and higher relative citrulline occupancy. Altogether, 23 sites were id...

Very early MRI responses to therapy as a predictor of later radiographic progression in early rheumatoid arthritis.

The objective of this study was to evaluate early changes in magnetic resonance imaging (MRI) and clinical disease activity measures as predictors of later structural progression in early rheumatoid arthritis (RA).

Baseline Objective Inflammation by Magnetic Resonance Imaging as a Predictor of Therapeutic Benefit in Early, Poor Prognosis Rheumatoid Arthritis.

High magnetic resonance imaging (MRI)-detected inflammation is associated with greater progression and poorer outcomes in rheumatoid arthritis (RA). This analysis aimed to determine if baseline MRI inflammation was related to clinical response and remission in the Assessing Very Early Rheumatoid arthritis Treatment (AVERT) study.

PBT-6, a Novel PI3KC2γ Inhibitor in Rheumatoid Arthritis.

Phosphoinositide 3-kinase (PI3K) is considered as a promising therapeutic target for rheumatoid arthritis (RA) because of its involvement in inflammatory processes. However, limited studies have reported the involvement of PI3KC2γ in RA, and the underlying mechanism remains largely unknown. Therefore, we investigated the role of PI3KC2γ as a novel therapeutic target for RA and the effect of its selective inhibitor, PBT-6. In this study, we observed that PI3KC2γ was markedly increased in the synovial flui...

Clostridium paraputrificum Septic Arthritis and Osteomyelitis of Shoulder: A Case Report and Review of Literature.

Septic arthritis due to Clostridium species is rare. We report the first case of Clostridium paraputrificum native shoulder septic arthritis and osteomyelitis. An 86-year-old woman with osteoarthritis presented with acute-onset right shoulder pain. Injection of the glenohumeral joint with methylprednisolone resulted in worsening of pain. Synovial fluid analysis was consistent with septic arthritis and culture of the synovial fluid grew C. paraputrificum. Arthroscopic irrigation and debridement of shoulder j...

Treatment strategies in early rheumatoid arthritis methotrexate management: Results from a prospective cohort.

To assess "real-word" practice patterns surrounding treatment initiation and treatment adjustments over time for methotrexate (MTX) and non-MTX-based treatments strategies in early rheumatoid arthritis (ERA).

Predictors of good response to conventional synthetic DMARDs in early seronegative rheumatoid arthritis: data from the ESPOIR cohort.

Early seronegative rheumatoid arthritis (RA) is considered a specific entity, especially regarding diagnostic issues and prognosis. Little is known about its potentially different initial clinical presentation and outcome. We aimed to determine predictors of good response to conventional synthetic disease-modifying anti-rheumatic drugs (csDMARDs) in seronegative RA patients with early inflammatory arthritis.

Galectin-9 gene (LGALS9) polymorphisms are associated with rheumatoid arthritis in Brazilian patients.

Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by synovial inflammation and hyperplasia, as well as cartilage and bone destruction. Several proteins are associated with the pathogenesis of the disease. Galectin-9 belongs to the family of lectins that are involved in various biological processes and have anti-inflammatory activity.

The protease systems and their pathogenic role in juvenile idiopathic arthritis.

Numerous proteases produced by synovial cells of arthritic joints, chondrocytes, macrophages and polymorphonuclear cells have been identified as responsible for the joint damage in rheumatoid arthritis. There are few scientific contributions aimed to identify similar mechanisms in the joints of patients with juvenile idiopathic arthritis. Recently, some mechanisms emerged, triggered by the TH17 and TH1/TH17 lymphocytes, which could shed new light on unexpected pathogenic pathways of joint damage in the JIA,...

Analysis of gene expression in rheumatoid arthritis and related conditions offers insights into sex-bias, gene biotypes and co-expression patterns.

The era of next-generation sequencing has mounted the foundation of many gene expression studies. In rheumatoid arthritis research, this has led to the discovery of important candidate genes which offered novel insights into mechanisms and their possible roles in the cure of the disease. In the last years, data generation has outstripped data analysis and while many studies focused on specific aspects of the disease, a global picture of the disease is not yet accomplished. Here, we analyzed and compared a c...

Molecular Portraits of Early Rheumatoid Arthritis Identify Clinical and Treatment Response Phenotypes.

There is a current imperative to unravel the hierarchy of molecular pathways that drive the transition of early to established disease in rheumatoid arthritis (RA). Herein, we report a comprehensive RNA sequencing analysis of the molecular pathways that drive early RA progression in the disease tissue (synovium), comparing matched peripheral blood RNA-seq in a large cohort of early treatment-naive patients, namely, the Pathobiology of Early Arthritis Cohort (PEAC). We developed a data exploration website (h...

Increased frequency of activated CD8 T cell effectors in patients with psoriatic arthritis.

The aim of this study is to identify subsets of T cells differentially represented in the circulation of patients with psoriatic arthritis and to evaluate the possibility that they can recirculate between peripheral blood and the inflamed joints. We analyzed the phenotype and cytokine expression in circulating CD8 and CD4 T cells in 69 subjects: 28 with cutaneous psoriasis, 15 patients with psoriatic arthritis, and 26 healthy subjects. In the circulation, the percentage of each subset was compared among the...

Chondrocytes play a role in the development of rheumatoid arthritis via TMEM147-mediated NF-κB activation.

We previously reported that the co-activation of NF-κB and STAT3 in non-immune cells including synovial fibroblasts enhances the expression of NF-κB target genes, playing a role in chronic inflammation including rheumatoid arthritis (RA). Here we examined the role of NF-κB activation in chondrocytes to understand the pathogenesis of RA. Furthermore, we investigated TMEM147 as a representative NF-κB activator in chondrocytes.

Psychometric properties and cross-language equivalence of the revised Bristol Rheumatoid Arthritis Fatigue and the Rheumatoid Arthritis Impact of Disease scales in rheumatoid arthritis.

To assess psychometric properties and cross-language measurement equivalence of six versions of the Bristol Rheumatoid Arthritis Fatigue Scale (BRAF-MDQ) and the Rheumatoid Arthritis Impact of Disease Score (RAID in rheumatoid arthritis (RA).

Equine or porcine synovial fluid as a novel ex vivo model for the study of bacterial free-floating biofilms that form in human joint infections.

Bacterial invasion of synovial joints, as in infectious or septic arthritis, can be difficult to treat in both veterinary and human clinical practice. Biofilms, in the form of free-floating clumps or aggregates, are involved with the pathogenesis of infectious arthritis and periprosthetic joint infection (PJI). Infection of a joint containing an orthopedic implant can additionally complicate these infections due to the presence of adherent biofilms. Because of these biofilm phenotypes, bacteria within these...

Adiponectin promotes fibroblast-like synoviocytes producing IL-6 to enhance T follicular helper cells response in rheumatoid arthritis.

Rheumatoid arthritis (RA) is characterised by the overproduction of autoantibodies such as rheumatoid factor (RF) and anti-cyclic citrullinated peptide (anti-CCP) antibody. T follicular helper (Tfh) cells are a specialised Th subset that provides signals to B cells, promoting the secretion of antibodies. Our previous studies showed that the frequency of circulating Tfh cells were markedly increased in RA patients and positively correlated with disease activity and the levels of anti-CCP autoantibody. Adipon...

B cell synovitis and clinical phenotypes in rheumatoid arthritis: relationship to disease stages and drug exposure.

To define the relationship of synovial B cells to clinical phenotypes at different stages of disease evolution and drug exposure in rheumatoid arthritis (RA).

Comparison of methods of quantifying global synovial metabolic activity with FDG-PET/CT in rheumatoid arthritis.

2-deoxy-2-[ F]fluoro-d-glucose positron emission tomography/computed tomography (FDG-PET/CT) can portray increased glycolysis due to inflammation in rheumatoid arthritis (RA). The aim of this study was to evaluate and compare the reliability and construct validity of two methods of quantifying RA disease activity using FDG-PET/CT.

The B side of Rheumatoid Arthritis pathogenesis.

In the last years, a dramatic amount of research has been performed increasing the knowledge about the biological mechanism underpinning Rheumatoid Arthritis (RA) inflammation, putting B lymphocytes in the center of RA pathogenesis. Nowadays, B cell phenotypes and autoantibodies positivity arose as important biomarkers in early and long-standing disease. Moreover, comparative analysis of peripheral blood and synovial tissue compartments enables the identification of novel physiopathological mechanisms promo...

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