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Rheumatoid arthritis;synovial

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https://www.readbyqxmd.com/read/29035882/regulation-of-arthritis-severity-by-the-acid-sphingomyelinase
#1
Nadine Beckmann, Katrin Anne Becker, Silke Walter, Jan U Becker, Melanie Kramer, Gabriele Hessler, Stefanie Weber, Joachim R Göthert, Klaus Fassbender, Erich Gulbins, Alexander Carpinteiro
BACKGROUND/AIMS: Rheumatoid arthritis is a chronic autoimmune disease hallmarked by inflammation in synovial joints. Treatment is hampered by the lack of a cure and current disease-modifying drugs are associated with potentially severe toxicities. METHODS: We investigated arthritis severity by measuring joint swelling and pro-inflammatory cytokine production in a murine experimental model of inflammatory arthritis (antigen-induced arthritis). We analyzed acid sphingomyelinase knock-out mice and wild-type littermates, as well as mice treated with the pharmacological acid sphingomyelinase inhibitor amitriptyline...
October 16, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29032909/subclinical-synovitis-measured-by-ultrasound-in-rheumatoid-arthritis-patients-with-clinical-remission-induced-by-synthetic-and-biological-modifying-disease-drugs
#2
Marcos Cruces, Soham Al Snih, Natalí Serra-Bonett, Juan C Rivas
BACKGROUND: Rheumatoid arthritis (RA) patients with disease in clinical remission might show subclinical synovitis, which can be related to the progress of structural joint damage. OBJECTIVE: To determine and compare the degree of synovial inflammation by ultrasound (US) in patients with RA in clinical remission, treated with DMARD or combination therapy with DMARD and anti-TNF. METHODS: Hospital-based cross-sectional study of 58 patients with RA in sustained remission for at least 6 months by DAS28 <2...
October 9, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/29031206/inhibitory-effect-of-triperygium-wilfordii-polyglucoside-on-dipeptidyl-peptidase-i-in-vivo-and-in-vitro
#3
Jingjing Wang, Yi Chu, Xiaoying Zhou
BACKGROUD: Dipeptidyl peptidase I (DPPI), a lysosomal cysteine protease is derived from granule immune cells including mast cell, neutrophils, and toxicity T cells. DPPI can activate serine proteases by removal of dipeptides from N-termini of the pro-proteases, resulting in granule immune cells activation which involved in physiological or pathological responses. Triperygium Wilfordii Polyglucoside (TWP) is one of the traditional Chinese medicines, and commonly used in rheumatoid arthritis (RA) treatment...
October 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29029510/adenovirus-mediated-delivery-of-sema3a-alleviates-rheumatoid-arthritis-in-a-serum-transfer-induced-mouse-model
#4
Yue Teng, Zhanhai Yin, Jing Li, Kun Li, Xu Li, Yan Zhang
Rheumatoid arthritis is a chronic autoimmune disease characterized by infiltration of inflammatory cells into the synovium and destruction of cartilage and bone. Macrophages, fibroblast-like synoviocytes (FLS), and osteoclasts are critical cells driving the pathogenesis of RA. Semaphorin 3A (Sema3A) is recently identified as an essential player in the bone homeostasis, however its role in RA progression especially in the macrophage polarization are poorly understood. In the present study, we found that Sems3A levels were significantly decreased in RA serum and synovial fluid compared to OA controls...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29024421/generalized-estimating-equation-model-to-compare-drug-effects-on-synovitis-of-the-dominant-wrist-in-severe-rheumatoid-arthritis-between-tocilizumab-versus-adalimumab-versus-abatacept-using-high-resolution-ultrasound
#5
Ying-Chou Chen, Wen-Chan Chiu, Fu-Mei Su, Jia-Feng Chen
PURPOSE: The use of biological agents has revolutionized the treatment of rheumatoid arthritis (RA). However, details of serial synovial changes in imaging evaluation are unclear. Using power Doppler (PD) ultrasound, this study aimed to evaluate the comparative efficacy of biologicals for patients with refractory RA, with the hope that these findings could aid in clinical decision making. METHODS: Patients with RA who received abatacept, adalimumab or tocilizumab therapy were enrolled...
October 12, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29022182/coexistent-rheumatoid-arthritis-and-gout-a-case-series-and-review-of-the-literature
#6
Lilia Olaru, Laura Soong, Sukhvinder Dhillon, Elaine Yacyshyn
Since 1964 to present, there have been more than 33 cases of concomitant rheumatoid arthritis (RA) and gout reported in the literature. The objective of this study is to present a case series of patients with coexistent rheumatoid arthritis and gout and to provide a review of the literature. A retrospective review of a rheumatology patient database at the University of Alberta was performed (2004-2017). Patient charts were reviewed and the 1987 ARA Revised Classification Criteria for RA and 1977 ARA Classification Criteria for gout were applied to each patient...
October 12, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/29017507/polyunsaturated-fatty-acids-any-role-in-rheumatoid-arthritis
#7
REVIEW
Luca Navarini, Antonella Afeltra, Gabriele Gallo Afflitto, Domenico Paolo Emanuele Margiotta
BACKGROUND: Polyunsaturated fatty acids (PUFAs) are members of the family of fatty acids and are included in the diet. Particularly, western diet is usually low in n-3 PUFAs and high in n-6 PUFAs. PUFAs play a central role in the homeostasis of immune system: n-6 PUFAs have predominantly pro-inflammatory features, while n-3 PUFAs seem to exert anti-inflammatory and pro-resolving properties. Rheumatoid arthritis (RA) is a chronic inflammatory arthritis in which many inflammatory pathways contribute to joint and systemic inflammation, disease activity, and structural damage...
October 10, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28990250/galectin-3-is-persistently-increased-in-early-rheumatoid-arthritis-ra-and-associates-with-anti-ccp-seropositivity-and-mri-bony-lesions-while-early-fibrosis-markers-correlate-with-disease-activity
#8
Saida Farah Issa, Anne Friesgaard Christensen, Hanne M Lindegaard, Merete L Hetland, Kim Hørslev-Petersen, Kristian Stengaard-Pedersen, Bo Jannik Ejbjerg, Tine Lottenburger, Torkell Ellingsen, Jens Kristian Pedersen, Kirsten Junker, Anders Svendsen, Ulrik Tarp, Mikkel Østergaard, Peter Junker
Galectin-3 has been suggested as a pro-inflammatory mediator in animal arthritis and rheumatoid arthritis (RA). We aimed to study the serum level of galectin-3 in patients with newly diagnosed RA and associations with disease profile, Magnetic Resonance Imaging (MRI) findings and seromarkers of synovial matrix inflammation. One hundred and sixty DMARD naïve patients newly diagnosed with RA were included (CIMESTRA study). Clinical, serological and imaging data were recorded before treatment and at 6 weeks, 3 and 12 months...
October 9, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28987944/mir-140-5p-inhibits-synovial-fibroblasts-proliferation-and-inflammatory-cytokines-secretion-through-targeting-tlr4
#9
Hui Li, Shi-Bing Guan, Yi Lu, Fei Wang
OBJECTIVES: This study was aimed to investigate the effects of miR-140-5p on the proliferation and inflammatory cytokines secretion of rheumatoid arthritis synovial fibroblasts (RASFs). METHODS: Synovial tissue samples from 23 rheumatoid arthritis (RA) patients and 18 normal synovial tissue samples were collected. The RASFs were isolated and cultured. Then, miR-140-5p and TLR4 expression in both synovial tissue and RASFs were detected using the quantitative real-time PCR (qPCR) and western blot...
October 4, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28987940/microrna-29a-inhibits-proliferation-and-induces-apoptosis-in-rheumatoid-arthritis-fibroblast-like-synoviocytes-by-repressing-stat3
#10
Jinxiang Liu, Dan Fei, Jie Xing, Juan Du
Rheumatoid arthritis-fibroblast-like synoviocytes (RA-FLS) with aberrant expression of microRNA (miRNA) have been reported to be involved in the initiation, progression, and perpetuation of rheumatoid arthritis (RA). In this study, we explored the biological function and underlying mechanism of microRNA-29a (miR-29a) in cultured RA-FLS from RA patients. The expression of miR-29a in serum, synovial tissues, and FLS from RA patients and health donors was detected by real-time quantitative RT-PCR (qRT-PCR). The effects of miR-29a on cell proliferation, apoptosis, and inflammatory cytokine levels in RA-FLS were also determined using Counting Assay Kit-8 (CCK-8), flow cytometry, and enzyme-linked immunosorbent assay (ELISA) respectively...
October 4, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28987932/ethyl-pyruvate-ameliorates-inflammatory-arthritis-in-mice
#11
Seung Min Jung, Jaeseon Lee, Seung Ye Baek, Juhyun Lee, Se Gwang Jang, Seung-Min Hong, Jin-Sil Park, Mi-La Cho, Sung-Hwan Park, Seung-Ki Kwok
OBJECTIVES: Ethyl pyruvate (EP) is the ethyl ester of pyruvate and has antioxidative and anti-inflammatory effects. This study aimed to evaluate the therapeutic effect of EP in inflammatory arthritis and to identify the underlying mechanisms. METHODS: Mice with collagen-induced arthritis (CIA) were treated with the vehicle control or EP at 20mg/kg, and clinical and histological analyses were performed on the animals. The differentiation of murine CD4+ T cells into T helper 17 (Th17) cells in the presence of EP was investigated in vitro...
October 5, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28983619/circular-rna-expression-profiles-of-peripheral-blood-mononuclear-cells-in-rheumatoid-arthritis-patients-based-on-microarray-chip-technology
#12
Fengping Zheng, Xiangqi Yu, Jiahuang Huang, Yong Dai
Rheumatoid arthritis (RA) is a systemic autoimmune disease characterized by chronic synovial inflammation and finally leads to variable degrees of bone and cartilage erosion. The diagnosis of RA is not an accurate indicator, but a series of scores and the mechanisms underlying it remain only partially understood. The present study explored whether circular RNAs (circRNAs) contribute to the RA pathophysiological mechanism. Total RNA from peripheral blood mononuclear cells of 10 RA patients and 10 healthy controls were extracted and circRNA expression profiling was followed by microarray analysis...
September 27, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28982129/the-tyrosine-kinase-inhibitor-imatinib-mesylate-suppresses-uric-acid-crystal-induced-acute-gouty-arthritis-in-mice
#13
Laurent L Reber, Philipp Starkl, Bianca Balbino, Riccardo Sibilano, Nicolas Gaudenzio, Stephan Rogalla, Steven Sensarn, Dongmin Kang, Harini Raghu, Jeremy Sokolove, William H Robinson, Christopher H Contag, Mindy Tsai, Stephen J Galli
Gouty arthritis is caused by the deposition of monosodium urate (MSU) crystals in joints. Despite many treatment options for gout, there is a substantial need for alternative treatments for patients unresponsive to current therapies. Tyrosine kinase inhibitors have demonstrated therapeutic benefit in experimental models of antibody-dependent arthritis and in rheumatoid arthritis in humans, but to date, the potential effects of such inhibitors on gouty arthritis has not been evaluated. Here we demonstrate that treatment with the tyrosine kinase inhibitor imatinib mesylate (imatinib) can suppress inflammation induced by injection of MSU crystals into subcutaneous air pouches or into the ankle joint of wild type mice...
2017: PloS One
https://www.readbyqxmd.com/read/28979694/polyene-phosphatidylcholine-inhibited-the-inflammatory-response-in-lps-stimulated-macrophages-and-ameliorated-the-adjuvant-induced-rat-arthritis
#14
Wei Pan, Wen-Ting Hao, Hui-Wen Xu, Su-Ping Qin, Xiang-Yang Li, Xiao-Mei Liu, Fen-Fen Sun, Hui Li, Ren-Xian Tang, Kui-Yang Zheng
This study sought to investigate the anti-inflammatory effect of Polyene Phosphatidylcholine (PPC), a clinical drug that is used to treat hepatopathy, on lipopolysaccharide (LPS)-stimulated macrophages and on bovine collagen II-induced arthritis (CIA) rats. In stimulated primary and Raw264.7 macrophages by LPS, PPC significantly down-regulated the relative expression of mRNA such as IL-6, TNF-α, TLR-2, TLR-4, MyD88, and NF-κB while up-regulated IL-10 and TGF-β expression. Moreover, the concentration of IL-6, TNF-α, IL-10, and TGF-β in the cultured supernatants showed the similar tendency with their mRNA alterations...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28978351/the-caspase-8-ripk3-signaling-axis-in-antigen-presenting-cells-controls-the-inflammatory-arthritic-response
#15
Salina Dominguez, Anna B Montgomery, G Kenneth Haines, Christina L Bloomfield, Carla M Cuda
BACKGROUND: Caspase-8 is a well-established initiator of apoptosis and suppressor of necroptosis, but maintains functions beyond cell death that involve suppression of receptor-interacting serine-threonine kinases (RIPKs). A genome-wide association study meta-analysis revealed an SNP associated with risk of rheumatoid arthritis (RA) development within the locus containing the gene encoding for caspase-8. Innate immune cells, like macrophages and dendritic cells, are gaining momentum as facilitators of autoimmune disease pathogenesis, and, in particular, RA...
October 4, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28975975/mir-20a-regulates-fibroblast-like-synoviocyte-proliferation-and-apoptosis-in-rheumatoid-arthritis
#16
X-J Wei, X-W Li, J-L Lu, Z-X Long, J-Q Liang, S-B Wei, C-X Lu, W-Z Lu
OBJECTIVE: STAT3 expression is elevated in the synovial tissue of patients with rheumatoid arthritis (RA). MiR-20a plays a role in mediating synovial inflammation in RA. Bioinformatics analysis has identified a binding site between miR-20 and the 3'-UTR of STAT3 mRNA. This study aimed to investigate the role of miR-20a in the regulation of STAT3 expression and synovial cell proliferation as well as apoptosis. PATIENTS AND METHODS: Synovial tissues were collected from RA patients and osteoarthritis (OA) patients to measure miR-20a, STAT3, p-STAT3, and Ki-67 expressions...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28972432/interleukin-34-promotes-fibrocyte-proliferation
#17
Carole L Galligan, Eleanor N Fish
Rheumatoid arthritis (RA) is a systemic autoimmune disease affecting multiple joints. It remains unclear which factors in the circulation are associated with the systemic spread of the disease. Fibrocytes are pluripotent mesenchymal stem cells present in the circulation of RA patients. Our earlier findings implicated activated fibrocytes in the etiology of onset and pathogenesis of RA. Elevated levels of interleukin-34 (IL-34) in the serum and synovial fluid of RA patients are associated with rheumatoid factor and anticyclic citrullinated peptide antibodies, indicators of RA...
October 2017: Journal of Interferon & Cytokine Research
https://www.readbyqxmd.com/read/28968465/the-macrophage-marker-translocator-protein-tspo-is-down-regulated-on-pro-inflammatory-m1-human-macrophages
#18
Nehal Narayan, Harpreet Mandhair, Erica Smyth, Stephanie Georgina Dakin, Serafim Kiriakidis, Lisa Wells, David Owen, Afsie Sabokbar, Peter Taylor
The translocator protein (TSPO) is a mitochondrial membrane protein, of as yet uncertain function. Its purported high expression on activated macrophages, has lent utility to TSPO targeted molecular imaging in the form of positron emission tomography (PET), as a means to detect and quantify inflammation in vivo. However, existing literature regarding TSPO expression on human activated macrophages is lacking, mostly deriving from brain tissue studies, including studies of brain malignancy, and inflammatory diseases such as multiple sclerosis...
2017: PloS One
https://www.readbyqxmd.com/read/28963634/intra-articular-methotrexate-versus-corticosteroid-injections-in-medium-sized-joints-of-rheumatoid-arthritis-patients-an-intervention-study
#19
Mohmad Attia Mortada, Shimaa Mustafa Abdelwhab, Mohmad H Elgawish
The effects of intra-articular methotrexate (I/A MTX) in knee synovitis in rheumatoid arthritis have been previously evaluated. I/A MTX has not been studied in other joints. Ultrasonography (US) has been little studied in monitoring the effect of I/A MTX. The aim of the study is to test the efficacy of I/A MTX in suppression of persistent synovitis in medium-sized joints (ankle, wrist, and elbow) in rheumatoid arthritis patients. Patients were divided into two groups: group 1 (methotrexate group): 56 patients in which 84 joints (32 ankles, 28 wrists, and 24 elbows) were injected intra-articularly by 10 mg of methotrexate in the targeted joint on a weekly basis for 8 weeks and group 2 (steroid group): 44 patients in which 70 joints (26 ankles, 24 wrists, and 20 elbows) were injected once by Triamcinolone acetonide 40 mg...
September 30, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28957552/enrichment-of-malondialdehyde-acetaldehyde-antibody-in-the-rheumatoid-arthritis-joint
#20
Ted R Mikuls, Michael J Duryee, Rafid Rahman, Daniel R Anderson, Harlan R Sayles, Andrew Hollins, Kaleb Michaud, Frederick Wolfe, Geoffrey E Thiele, Jeremy Sokolove, William H Robinson, Nithya Lingampalli, Anthony P Nicholas, Geoffrey A Talmon, Kaihong Su, Matthew C Zimmerman, Lynell W Klassen, Geoffrey M Thiele
Objective: To characterize the expression of malondialdehdye-acetaldehyde (MAA) adducts and anti-MAA antibody in articular tissues and serum of patients with RA. Methods: Paired sera and SF were examined from 29 RA and 13 OA patients. Anti-MAA antibody, RF, ACPA and total immunoglobulin were quantified. SF-serum measures were compared within and between disease groups. The presence and co-localization of MAA, citrulline and select leukocyte antigens in RA and OA synovial tissues were examined using immunohistochemistry...
October 1, 2017: Rheumatology
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