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Antibodies targeting post-translationally modified proteins, such as anti-carbamylated protein antibodies (anti-CarP antibodies) are present in the sera of rheumatoid arthritis (RA) patients. These autoantibodies associate with increased risk of RA development and with severity of joint destruction. It is not known which proteins in the RA joint are recognised by anti-CarP antibodies. Therefore, we investigated the presence and identity of carbamylated proteins in the human (inflamed) joint.

We obtained synovium, cartilage and synovial fluid from RA joints. Cartilage and synovium were obtained from controls. Samples were processed and used for immunohistochemistry or mass-spectrometric analysis to investigate the presence of carbamylated proteins. Anti-CarP antibody reactivity towards identified carbamylated proteins was tested by ELISA.

Immunohistochemistry showed extensive staining of RA and control synovial tissue. Whole proteome analyses of the joint tissues revealed a large number of carbamylated peptidyllysine residues. We identified many carbamylated proteins in cartilage and were also able to detect carbamylation in synovial tissue and synovial fluid. Carbamylation was not exclusive to the RA joint and was also present in the joints of controls. Anti-CarP antibodies in the sera of RA patients were able to recognise the identified carbamylated proteins.

We conclude that numerous carbamylated proteins are present in the RA joint. These carbamylated proteins can be recognised by anti-CarP antibodies, substantiating the notion that anti-CarP antibodies may play a role in the pathogenesis of RA.
We conclude that numerous carbamylated proteins are present in the RA joint. These carbamylated proteins can be recognised by anti-CarP antibodies, substantiating the notion that anti-CarP antibodies may play a role in the pathogenesis of RA.
GO-PRACTICE aimed to evaluate the persistence, clinical response and safety of golimumab in adult patients with chronic inflammatory rheumatic disease.

Prospective observational study with 24 months of follow-up, involving 134 rheumatologists from public or private health establishments in France. The primary outcome was the persistence of golimumab 24 months after initial prescription. Cumulative persistence probabilities were determined from Kaplan-Meier estimates. Secondary outcomes included an evaluation of disease activity and golimumab safety profile.

Of 754 consecutively recruited patients, 170 had rheumatoid arthritis (RA) (54.3 years, 74.1% female, 64.7% biologics-naïve), 106 had psoriatic arthritis (PsA) (48.1 years, 70% female, 66.0% biologics-naïve) and 478 had axial spondyloarthritis (axSpA) (42.8 years, 54.6% female, 60.9% biologics-naïve). see more Golimumab persistence at 2 years was 56.5%, 45.1% and 52.6%, respectively, in RA, PsA and axSpA groups. Persistence was higher in biologics-naïve (58.3%) than in biologics pre-treated patients (42.7%, p<0.01). For 362 patients continuing golimumab at 2 years, disease activity improved significantly from baseline to 2 years mean 28-joint disease activity score for RA and PsA was lowered by 2.06 and 1.89 points, and mean ankylosing spondylitis disease activity score was lowered by 3.11 points (p<0.0001) for axSpA. Patient appreciation of disease activity also improved; 8.9% of discontinuations were due to intolerance.

Golimumab persistence was satisfactory at 2 years and accompanied by improvements in clinical effectiveness in 362 patients continuing golimumab at 2 years. Golimumab was well tolerated and its safety profile was consistent with those reported in previous studies.
Golimumab persistence was satisfactory at 2 years and accompanied by improvements in clinical effectiveness in 362 patients continuing golimumab at 2 years. Golimumab was well tolerated and its safety profile was consistent with those reported in previous studies.
Multiple physiological and pathological conditions interfere with the function of the endoplasmic reticulum (ER). However, much remains unknown regarding the impact of ER stress on toll-like receptors (TLRs) -induced inflammatory responses in rheumatoid arthritis (RA). The aim of this study was to reveal the effects of ER stress and its regulator, X-box-binding protein-1 (XBP-1), on the inflammatory response of RA synovial fibroblasts (RASF) to different TLRs ligands.

ER stress was induced in RASF by incubating with thapsigargin (Tg). TLR2 ligand Pam3CSK4, TLR3 ligand PolyIC, TLR4 ligand LPS were used to stimulate the cells. Effects of ER stress on TLRs-induced inflammatory mediators were determined by using RT-PCR, qPCR and ELISA analysis. Western blots analysis was used to detected the signalling pathways in this process. For gene silencing experiment, control scrambled or XBP-1 specific siRNA were transfected into RASF. T helper (Th)1/Th17 cells expansion was determined by flow cytometry analysis, and IFN-γ/IL-17A production in supernatants were collected for ELISA assay.

ER stress potentiated the expression of inflammatory cytokines, MMPs and VEGF in RASF stimulated by different TLRs ligands, which was companied with enhanced the activation of NF-κB and MAPKs signalling pathways. Silencing XBP-1 in RASF could dampen TLRs signalling-simulated inflammatory response under ER stress. Moreover, blockade of XBP-1 reduced the generation of Th1 and Th17 cells mediated by RASF, and suppressed the production of IFN-γ and IL-17A.

Our findings suggest that ER stress and XBP-1 may function in conjunction with TLRs to drive the inflammation of RASF, and this pathway may serve as a therapeutic target for the disease.
Our findings suggest that ER stress and XBP-1 may function in conjunction with TLRs to drive the inflammation of RASF, and this pathway may serve as a therapeutic target for the disease.
To study the incidence, time-trends and outcomes of serious infections in Sjögren's syndrome (SS).

We examined the epidemiology, time-trends and outcomes of five serious infections (opportunistic infections (OI), skin and soft tissue infections (SSTI), urinary tract infection (UTI), pneumonia, and sepsis/bacteremia) in hospitalised patients with SS, using the 1998-2016 U.S. National Inpatient Sample. Multivariable-adjusted logistic regression analyses analysed the association of patient, comorbidity and hospital characteristics with healthcare utilisation (hospital charges, length of hospital stay, discharge to non-home setting), and in-hospital mortality.

We found 49,897,331 hospitalisations with serious infections in general population and 69,239 in patients with SS. Compared to serious infections hospitalisations in people without SS, SS patients were older, and more likely to be female, white or have Deyo-Charlson index score ≥2. Serious infections during the study period 1998-2016 were OI, 3%; SSTI, 19%; UTI, 6%; pneumonia, 37%; and sepsis, 34%.
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