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Arthritis Research & Therapy

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https://www.readbyqxmd.com/read/28526072/differences-in-serum-and-synovial-cd4-t-cells-and-cytokine-profiles-to-stratify-patients-with-inflammatory-osteoarthritis-and-rheumatoid-arthritis
#1
Alessandra Penatti, Federica Facciotti, Roberta De Matteis, Paola Larghi, Moira Paroni, Antonella Murgo, Orazio De Lucia, Massimiliano Pagani, Luca Pierannunzii, Marcello Truzzi, Andreea Ioan-Facsinay, Sergio Abrignani, Jens Geginat, Pier Luigi Meroni
BACKGROUND: The aim was to investigate CD4(+)T-cell subsets, immune cells and their cytokine profiles in blood and synovial compartments in rheumatoid arthritis (RA) and inflammatory osteoarthritis (OA) to define specific immune signatures. METHODS: Peripheral blood, synovial fluid (SF) and synovial membranes (SM) of RA and OA patients were analyzed. CD4(+)T-cell subset frequencies were determined by flow cytometry, and cytokine concentrations in serum and SF were measured by ELISA...
May 19, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28521841/tnf-inhibitors-appear-to-inhibit-disease-progression-and-improve-outcome-in-takayasu-arteritis-an-observational-population-based-time-trend-study
#2
Birgir Gudbrandsson, Øyvind Molberg, Øyvind Palm
BACKGROUND: Magnetic resonance imaging (MRI) and computed tomography (CT) angiography have now largely replaced interventional angiography in the diagnoses and follow up of Takayasu arteritis (TAK) but data on the effects of this change of imaging method on diagnostic delay and vascular damage, and detailed data on the effect of different treatment regimens on the accumulation of vascular damage are missing. The aim of this study was to assess time trends in diagnostic delay, therapeutic approaches, arterial lesion accrual, persistent disease activity and remission rates in TAK...
May 18, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28521839/associations-between-systemic-bone-mineral-density-and-early-knee-cartilage-changes-in-middle-aged-adults-without-clinical-knee-disease-a-prospective-cohort-study
#3
Andrew J Teichtahl, Yuanyuan Wang, Anita E Wluka, Boyd J Strauss, Joseph Proietto, John B Dixon, Graeme Jones, Flavia M Cicuttini
BACKGROUND: Osteoarthritis has a high prevalence in people with high bone mineral density (BMD). Nevertheless, whether high systemic BMD predates early structural features of knee osteoarthritis is unclear. This study examined the association between systemic BMD and knee cartilage defect progression and cartilage volume loss in middle-aged people without clinical knee disease. METHODS: Adults (n = 153) aged 25-60 years had total body, lumbar spine, and total hip BMD assessed by dual-energy X-ray absorptiometry at baseline (2005-2008), and tibial cartilage volume and tibiofemoral cartilage defects assessed by magnetic resonance imaging at baseline and follow up (2008-2010)...
May 18, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28521824/are-ankylosing-spondylitis-psoriatic-arthritis-and-undifferentiated-spondyloarthritis-associated-with-an-increased-risk-of-cardiovascular-events-a-prospective-nationwide-population-based-cohort-study
#4
Karin Bengtsson, Helena Forsblad-d'Elia, Elisabeth Lie, Eva Klingberg, Mats Dehlin, Sofia Exarchou, Ulf Lindström, Johan Askling, Lennart T H Jacobsson
BACKGROUND: To investigate the risk of first-time acute coronary syndrome (ACS), stroke and venous thromboembolism (VTE) in patients with ankylosing spondylitis (AS), psoriatic arthritis (PsA) and undifferentiated spondyloarthritis (uSpA), compared to each other and to the general population (GP). METHODS: This is a prospective nationwide cohort study. Cohorts with AS (n = 6448), PsA (n = 16,063) and uSpA (n = 5190) patients and a GP (n = 266,435) cohort, were identified 2001-2009 in the Swedish National Patient and Population registers...
May 18, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28521808/b-cell-repopulation-kinetics-after-rituximab-treatment-in-anca-associated-vasculitides-compared-to-rheumatoid-arthritis-and-connective-tissue-diseases-a-longitudinal-observational-study-on-120-patients
#5
Jens Thiel, Marta Rizzi, Marie Engesser, Ann-Kathrin Dufner, Arianna Troilo, Raquel Lorenzetti, Reinhard E Voll, Nils Venhoff
BACKGROUND: B cell depletion with rituximab (RTX) is approved for treatment of rheumatoid arthritis (RA) and ANCA-associated vasculitides (AAV). Recently, RTX has been shown to be effective in AAV maintenance therapy, but an optimal RTX treatment schedule is unknown and the time to B cell repopulation after RTX has not been studied. METHODS: Retrospective single-center analysis of B cell repopulation in patients with AAV, RA or connective tissue disease (CTD) treated with RTX...
May 18, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28521792/m2-macrophage-is-the-predominant-phenotype-in-airways-inflammatory-lesions-in-patients-with-granulomatosis-with-polyangiitis
#6
Alexandre Wagner Silva de Souza, Mirjan van Timmeren, Jan-Stephan Sanders, Coen Stegeman, Peter Heeringa, Cees G M Kallenberg, Johanna Westra
BACKGROUND: Macrophages may present two distinct phenotypes indicated as M1 and M2 under different stimuli. M1 and M2 macrophages have divergent functions that range from enhancement of inflammation for M1 to tissue repair and remodeling for M2 macrophages. The objective of this study was to evaluate the distribution of M1 and M2 macrophage phenotypes in biopsies from the airways of patients with active granulomatosis with polyangiitis (GPA) and to analyze their associations with T and B cells in those biopsies, and with nasal carriage of Staphylococcus aureus, disease parameters and therapy...
May 18, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28511725/the-performance-of-different-classification-criteria-sets-for-spondyloarthritis-in-the-worldwide-asas-comospa-study
#7
Pauline Bakker, Anna Moltó, Adrien Etcheto, Filip Van den Bosch, Robert Landewé, Floris van Gaalen, Maxime Dougados, Désirée van der Heijde
BACKGROUND: In this study, we sought to compare the performance of spondyloarthritis (SpA) classification criteria sets in an international SpA cohort with patients included from five continents around the world. METHODS: Data from the (ASAS) COMOrbidities in SPondyloArthritis (ASAS-COMOSPA) study were used. ASAS-COMOSPA is a multinational, cross-sectional study with consecutive patients diagnosed with SpA by rheumatologists worldwide. Patients were classified according to the European Spondyloarthropathy Study Group (ESSG), modified European Spondyloarthropathy Study Group (mESSG), Amor, modified Amor, Assessment of SpondyloArthritis international Society (ASAS) axial Spondyloarthritis (axSpA), ASAS peripheral spondyloarthritis (pSpA) and ClASsification criteria for Psoriatic Arthritis (CASPAR) criteria...
May 16, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28511719/interleukin-10-producing-lag3-regulatory-t-cells-are-associated-with-disease-activity-and-abatacept-treatment-in-rheumatoid-arthritis
#8
Shinichiro Nakachi, Shuji Sumitomo, Yumi Tsuchida, Haruka Tsuchiya, Masanori Kono, Rika Kato, Keiichi Sakurai, Norio Hanata, Yasuo Nagafuchi, Shoko Tateishi, Hiroko Kanda, Tomohisa Okamura, Kazuhiko Yamamoto, Keishi Fujio
BACKGROUND: Regulatory T cells (Tregs) play a role in the suppression of inflammation in autoimmune diseases, and lymphocyte activation gene 3 (LAG3) was reported as a marker of interleukin (IL)-10-producing Tregs. We aimed to clarify the function of human IL-10-producing CD4(+)CD25(-)LAG3(+) T cells (LAG3(+) Tregs) and their association with rheumatoid arthritis (RA). METHODS: LAG3(+) Tregs of human peripheral blood mononuclear cells (PBMCs) were cultured with B cells and follicular helper T cells to examine antibody suppression effects...
May 16, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28511690/development-of-a-clinical-prediction-algorithm-for-knee-osteoarthritis-structural-progression-in-a-cohort-study-value-of-adding-measurement-of-subchondral-bone-density
#9
Michael P LaValley, Grace H Lo, Lori Lyn Price, Jeffrey B Driban, Charles B Eaton, Timothy E McAlindon
BACKGROUND: Risk prediction algorithms increase understanding of which patients are at greatest risk of a harmful outcome. Our goal was to create a clinically useful prediction algorithm for structural progression of knee osteoarthritis (OA), using medial joint space loss as a proxy; and to quantify the benefit of including periarticular bone mineral density (BMD) in the algorithm. METHODS: Participants were from the Osteoarthritis Initiative (OAI) Progression Cohort, with X-ray readings of medial joint space at 36- and 48-month visits, and a 30- or 36-month medial-to-lateral tibial BMD ratio (M:L BMD ratio) value...
May 16, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28506320/costs-associated-with-failure-to-respond-to-treatment-among-patients-with-rheumatoid-arthritis-initiating-tnfi-therapy-a-retrospective-claims-analysis
#10
Michael Grabner, Natalie N Boytsov, Qing Huang, Xiang Zhang, Tingjian Yan, Jeffrey R Curtis
BACKGROUND: Tumor necrosis factor inhibitors (TNFi) are common second-line treatments for rheumatoid arthritis (RA). This study was designed to compare the real-world clinical and economic outcomes between patients with RA who responded to TNFi therapy and those who did not. METHODS: For this retrospective cohort analysis we used medical and pharmacy claims from members of 14 large U.S. commercial health plans represented in the HealthCore Integrated Research Database...
May 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28506315/molecular-mechanisms-underlying-osteoarthritis-development-notch-and-nf-%C3%AE%C2%BAb
#11
REVIEW
Taku Saito, Sakae Tanaka
Osteoarthritis (OA) is a multi-factorial and highly prevalent joint disorder worldwide. Since the establishment of murine surgical knee OA models in 2005, many of the key molecules and signalling pathways responsible for OA development have been identified. Here we review the roles of two multi-functional signalling pathways in OA development: Notch and nuclear factor kappa-light-chain-enhancer of activated B cells. Previous studies have identified various aspects of articular chondrocyte regulation by these pathways...
May 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28506291/targeting-cd22-with-the-monoclonal-antibody-epratuzumab-modulates-human-b-cell-maturation-and-cytokine-production-in-response-to-toll-like-receptor-7-tlr7-and-b-cell-receptor-bcr-signaling
#12
Natalia V Giltiay, Geraldine L Shu, Anthony Shock, Edward A Clark
BACKGROUND: Abnormal B-cell activation is implicated in the pathogenesis of autoimmune diseases, including systemic lupus erythematosus (SLE). The B-cell surface molecule CD22, which regulates activation through the B-cell receptor (BCR), is a potential target for inhibiting pathogenic B cells; however, the regulatory functions of CD22 remain poorly understood. In this study, we determined how targeting of CD22 with epratuzumab (Emab), a humanized anti-CD22 IgG1 monoclonal antibody, affects the activation of human B-cell subsets in response to Toll-like receptor 7 (TLR7) and BCR engagement...
May 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28506283/prolactin-blocks-the-expression-of-receptor-activator-of-nuclear-factor-%C3%AE%C2%BAb-ligand-and-reduces-osteoclastogenesis-and-bone-loss-in-murine-inflammatory-arthritis
#13
Maria G Ledesma-Colunga, Norma Adán, Georgina Ortiz, Mariana Solís-Gutiérrez, Fernando López-Barrera, Gonzalo Martínez de la Escalera, Carmen Clapp
BACKGROUND: Prolactin (PRL) reduces joint inflammation, pannus formation, and bone destruction in rats with polyarticular adjuvant-induced arthritis (AIA). Here, we investigate the mechanism of PRL protection against bone loss in AIA and in monoarticular AIA (MAIA). METHODS: Joint inflammation, trabecular bone loss, and osteoclastogenesis were evaluated in rats with AIA treated with PRL (via osmotic minipumps) and in mice with MAIA that were null (Prlr-/-) or not (Prlr+/+) for the PRL receptor...
May 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28494788/comprehensive-analysis-of-treatment-response-phenotypes-in-rheumatoid-arthritis-for-pharmacogenetic-studies
#14
Kristopher A Standish, C Chris Huang, Mark E Curran, Nicholas J Schork
BACKGROUND: An individual patient's response to a particular drug is influenced by multiple factors, which may include genetic predisposition. Pharmacogenetic studies attempt to discover and estimate the contributions of genetic variants to the variability in response to a drug treatment. The task of identifying the genetic contribution is often complicated by response phenotypes that are based on imprecise or subjective clinical observations. Because the success of a pharmacogenetic study depends on the analysis of a heritable phenotype, it is important to identify phenotypes with a significant heritable component to ensure reliable and reproducible results in subsequent genetic association studies...
May 12, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28482933/models-solely-using-claims-based-administrative-data-are-poor-predictors-of-rheumatoid-arthritis-disease-activity
#15
Brian C Sauer, Chia-Chen Teng, Neil A Accortt, Zachary Burningham, David Collier, Mona Trivedi, Grant W Cannon
BACKGROUND: This study developed and validated a claims-based statistical model to predict rheumatoid arthritis (RA) disease activity, measured by the 28-joint count Disease Activity Score (DAS28). METHOD: Veterans enrolled in the Veterans Affairs Rheumatoid Arthritis (VARA) registry with one year of data available for review before being assessed by the DAS28, were studied. Three models were developed based on initial selection of variables for analyses. The first model was based on clinically defined variables, the second leveraged grouping systems for high dimensional data and the third approach prescreened all possible predictors based on a significant bivariate association with the DAS28...
May 8, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28482926/structural-predictors-of-response-to-intra-articular-steroid-injection-in-symptomatic-knee-osteoarthritis
#16
Nasimah Maricar, Matthew J Parkes, Michael J Callaghan, Charles E Hutchinson, Andrew D Gait, Richard Hodgson, David T Felson, Terence W O'Neill
BACKGROUND: The aim was to examine if structural factors could affect response to intra-articular steroid injections (IASI) in knee osteoarthritis (OA). METHOD: Persons with painful knee OA participated in an open-label trial of IASI where radiographic joint space narrowing (JSN) and Kellgren-Lawrence (KL) grade, whole-organ magnetic resonance imaging (MRI) scores (WORMS) and quantitative assessment of synovial tissue volume (STV) were assessed on baseline images...
May 8, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28482921/the-autocrine-role-of-proteoglycan-4-prg4-in-modulating-osteoarthritic-synoviocyte-proliferation-and-expression-of-matrix-degrading-enzymes
#17
Ali Alquraini, Maha Jamal, Ling Zhang, Tannin Schmidt, Gregory D Jay, Khaled A Elsaid
BACKGROUND: Lubricin/proteoglycan 4 (PRG4) is a mucinous glycoprotein secreted by synovial fibroblasts and superficial zone chondrocytes. Recently, we showed that recombinant human PRG4 (rhPRG4) is a putative ligand for CD44 receptor. rhPRG4-CD44 interaction inhibits cytokine-induced rheumatoid arthritis synoviocyte proliferation. The objective of this study is to decipher the autocrine function of PRG4 in regulating osteoarthritic synoviocyte proliferation and expression of catabolic and pro-inflammatory mediators under basal and interleukin-1 beta (IL-1β)-stimulated conditions...
May 8, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28482872/disturbed-microcirculation-in-the-hands-of-patients-with-systemic-sclerosis-detected-by-fluorescence-optical-imaging-a-pilot-study
#18
Stefanie Friedrich, Susanne Lüders, Stephanie Gabriele Werner, Anne-Marie Glimm, Gerd-Rüdiger Burmester, Gabriela Riemekasten, Marina Backhaus, Sarah Ohrndorf
BACKGROUND: Utilising fluorescence optical imaging (FOI), the distribution of an intravenously applied colouring agent indocyanine green (ICG) can be analysed with the potential to identify malperfusion by little to no tissue enhancement. Systemic sclerosis (SSc) is characterised by the presence of digital ulcers reflecting progressive vasculopathy. The objective was to investigate the potential of FOI in the detection of disturbed microcirculation in the hands and fingers of patients with SSc and to link FOI findings to clinical signs of ischemia such as digital ulcers and pitting scars...
May 8, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28464949/monosodium-urate-crystal-deposition-associated-with-the-progress-of-radiographic-grade-at-the-sacroiliac-joint-in-axial-spa-a-dual-energy-ct-study
#19
Junqing Zhu, Aiwu Li, Ertao Jia, Yi Zhou, Juan Xu, Shixian Chen, Yinger Huang, Xiang Xiao, Juan Li
BACKGROUND: Previous studies have revealed that ankylosing spondylitis (AS), as the progenitor of axial spondyloarthritis (AxSpA), has been characterized by the insidiously progressive nature of sacroiliitis and spondylitis. Dual-energy computed tomography (DECT) has recently been used to analyse the deposition of monosodium urate (MSU) crystals with higher sensitivity and specificity. However, it remains unclear whether the existence of the MSU crystal deposition detected by DECT at the sacroiliac joint in patients with AxSpA also is associated with the existing structural damage...
May 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28464939/circulating-dna-in-rheumatoid-arthritis-pathological-changes-and-association-with-clinically-used-serological-markers
#20
Elena Rykova, Aleksey Sizikov, Dirk Roggenbuck, Oksana Antonenko, Leonid Bryzgalov, Evgeniy Morozkin, Kseniya Skvortsova, Valentin Vlassov, Pavel Laktionov, Vladimir Kozlov
BACKGROUND: Early diagnosis of rheumatoid arthritis (RA) is crucial to providing effective therapy and often hampered by unspecific clinical manifestations. Elevated levels of extracellular circulating DNA (cirDNA) in patients with autoimmune disease were found to be associated with etiopathogenesis. To our knowledge, this is the first study to investigate the putative diagnostic use of cirDNA in RA and its association with disease activity. METHODS: Blood samples were taken from 63 healthy subjects (HS) and 74 patients with RA...
May 2, 2017: Arthritis Research & Therapy
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