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Rheumatoid arthritis;synovial

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https://www.readbyqxmd.com/read/28545554/whipple-s-disease-mimicking-rheumatoid-arthritis-can-cause-misdiagnosis-and-treatment-failure
#1
Cornelia Glaser, Siegbert Rieg, Thorsten Wiech, Christine Scholz, Dominique Endres, Oliver Stich, Peter Hasselblatt, Walter Geißdörfer, Christian Bogdan, Annerose Serr, Georg Häcker, Reinhard E Voll, Jens Thiel, Nils Venhoff
BACKGROUND: Whipple's disease, a rare chronic infectious disorder caused by Tropheryma whipplei, may present with predominant joint manifestations mimicking rheumatoid arthritis (RA). METHODS: A retrospective single-center cohort study of seven patients was performed. Clinical symptoms were assessed by review of medical charts and Whipple's disease was diagnosed by periodic-acid-Schiff-stain and/or Tropheryma whipplei-specific polymerase-chain-reaction. RESULTS: Median age at disease onset was 54 years, six patients were male...
May 25, 2017: Orphanet Journal of Rare Diseases
https://www.readbyqxmd.com/read/28542869/tanshinone-iia-ameliorates-chronic-arthritis-in-mice-by-modulating-neutrophil-activities
#2
Shan Zhang, Guangrui Huang, Kai Yuan, Qingqing Zhu, Honghao Sheng, Ruipeng Yu, Guangbin Luo, Anlong Xu
AIMS: Rheumatoid arthritis (RA) is a chronic immune inflammatory disease mediated by the influx of immune cells into the synovial joint space. As Tanshinone IIA (TIIA) has potent antioxidant and anti-inflammatory activities, we used the adjuvant-induced arthritis (AA) murine model of RA to investigate the impact of TIIA on RA and immune cell activation. METHODS: The anti-arthritic activity of TIIA was investigated in an adjuvant-induced arthritis model of RA in mice...
May 24, 2017: Clinical and Experimental Immunology
https://www.readbyqxmd.com/read/28540351/cytokine-data-obtained-from-synovial-stromal-cells-of-patients-with-rheumatoid-arthritis-or-osteoarthritis
#3
Johanna A Huhtakangas, Johanna Veijola, Sanna Turunen, Anna Karjalainen, Maarit Valkealahti, Tomi Nousiainen, Susanna Yli-Luukko, Olli Vuolteenaho, Petri Lehenkari
In this article, we share the raw cytokine data obtained from basal and stimulated synovial stromal cells cultured from patients with rheumatoid arthritis or osteoarthritis. This data article is related to the research article entitled "1,25D3 and calcipotriol, its hypocalcemic analog, exert a long-lasting anti-inflammatory and anti-proliferative effect in synoviocytes cultured from patients with rheumatoid arthritis and osteoarthritis (1). Cytokine levels were analyzed by a magnetic bead-based multiplex assay (a panel of 27 important cytokines) in two separate sets of experiments...
June 2017: Data in Brief
https://www.readbyqxmd.com/read/28539742/neutralization-of-inflammation-by-inhibiting-in-vitro-and-in-vivo-secretory-phospholipase-a2-by-ethanol-extract-of-boerhaavia-diffusa-l
#4
Aladahalli S Giresha, Siddanakoppalu N Pramod, A D Sathisha, K K Dharmappa
BACKGROUND: Inflammation is a normal and necessary prerequisite to healing of the injured tissues. Inflammation contributes to all disease process including immunity, vascular pathology, trauma, sepsis, chemical, and metabolic injuries. The secretory phospholipase A2 (sPLA2) is a key enzyme in the production of pro-inflammatory mediators in chronic inflammatory disorders such as rheumatoid arthritis, coronary heart disease, diabetes, and asthma. The sPLA2 also contribute to neuroinflammatory disorders such as Parkinson's, Alzheimer's, and Crohn's disease...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28532672/molecular-insights-into-the-differences-in-anti-inflammatory-activities-of-green-tea-catechins-on-il-1%C3%AE-signaling-in-rheumatoid-arthritis-synovial-fibroblasts
#5
Sabrina Fechtner, Anil Singh, Mukesh Chourasia, Salahuddin Ahmed
In this study, we found that catechins found in green tea (EGCG, EGC, and EC) differentially interfere with the IL-1β signaling pathway which regulates the expression of pro-inflammatory mediators (IL-6 and IL-8) and Cox-2 in primary human rheumatoid arthritis synovial fibroblasts (RASFs). EGCG and EGC inhibited IL-6, IL-8, and MMP-2 production and selectively inhibited Cox-2 expression. EC did not exhibit any inhibitory effects. When we looked at the expression of key signaling proteins in the IL-1β signaling pathway, we found all the tested catechins could inhibit TAK-1 activity...
May 19, 2017: Toxicology and Applied Pharmacology
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
#6
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/28516867/the-link-between-proteus-mirabilis-environmental-factors-and-autoantibodies-in-rheumatoid-arthritis
#7
REVIEW
Taha Rashid, Alan Ebringer, Clyde Wilson
Rheumatoid arthritis (RA) is a relatively common and potentially disabling immune-mediated inflammatory systemic disease, predominantly affecting women and characterised by multiple small joint arthritis. Extensive data supports the roles of genetic, environmental and microbial factors in the triggering and development of this disease. Proteus mirabilis is considered as the main microbial culprit in the causation of RA. The evidence for the role of these microbes in RA and their links with commonly associated autoantibodies such as rheumatoid factors and anti-citrullinated peptide antibodies have been elucidated together with their relations with some of the non-microbial environmental factors which have been implicated in the aetiopathogenesis of RA...
May 8, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28516086/can-synovial-pathobiology-integrate-with-current-clinical-and-imaging-prediction-models-to-achieve-personalized-health-care-in-rheumatoid-arthritis
#8
REVIEW
Frances Claire Humby, Farida Al Balushi, Gloria Lliso, Alberto Cauli, Costantino Pitzalis
Although great progress has been made in the past decade toward understanding the pathogenesis of rheumatoid arthritis (RA), clinicians remain some distance from a goal of personalized health care. The capacity to diagnose RA early, predict prognosis, and moreover predict response to biologic therapies has been a research focus for many years. How currently available clinical prediction models can facilitate such goals is reviewed in this article. In addition, the role of current imaging techniques in this regard is also discussed...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28511664/yields-and-chondrogenic-potential-of-primary-synovial-mesenchymal-stem-cells-are-comparable-between-rheumatoid-arthritis-and-osteoarthritis-patients
#9
Yuji Kohno, Mitsuru Mizuno, Nobutake Ozeki, Hisako Katano, Keiichiro Komori, Shizuka Fujii, Koji Otabe, Masafumi Horie, Hideyuki Koga, Kunikazu Tsuji, Mikio Matsumoto, Haruka Kaneko, Yuji Takazawa, Takeshi Muneta, Ichiro Sekiya
BACKGROUND: Mesenchymal stem cells derived from the synovial membrane (synovial MSCs) are a candidate cell source for regenerative medicine of cartilage and menisci due to their high chondrogenic ability. Regenerative medicine can be expected for RA patients with the inflammation well-controlled as well as OA patients and transplantation of synovial MSCs would also be a possible therapeutic treatment. Some properties of synovial MSCs vary dependent on the diseases patients have, and whether or not the pathological condition of RA affects the chondrogenesis of synovial MSCs remains controversial...
May 16, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28511285/increased-f4-80-hi-macrophages-is-associated-with-suppression-of-serum-transfer-induced-arthritis-in-mice-with-flip-reduced-in-myeloid-cells
#10
Qi-Quan Huang, Robert Birket, Renee E Doyle, G Kenneth Haines, Harris Perlman, Bo Shi, Philip Homan, Lianping Xing, Richard M Pope
OBJECTIVE: Macrophages are critical in the pathogenesis of rheumatoid arthritis (RA). We recently demonstrated that FLIP (FLICE-like inhibitory protein) is necessary for the differentiation and/or survival of macrophages. We also identified that FLIP is highly expressed in RA synovial macrophages. This study was performed to determine if the reduction of Flip in macrophages would reduce synovial tissue macrophages and ameliorate serum transfer induced arthritis (STIA). METHODS: Mice with Flip deleted in myeloid cells (Flip(f/f) LysM(c/+) mice) and littermate controls were employed...
May 16, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28508153/cellular-and-molecular-perspectives-in-rheumatoid-arthritis
#11
REVIEW
Douglas J Veale, Carl Orr, Ursula Fearon
Synovial immunopathology in rheumatoid arthritis is complex involving both resident and infiltrating cells. The synovial tissue undergoes significant neovascularization, facilitating an influx of lymphocytes and monocytes that transform a typically acellular loose areolar membrane into an invasive tumour-like pannus. The microvasculature proliferates to form straight regularly-branching vessels; however, they are highly dysfunctional resulting in reduced oxygen supply and a hypoxic microenvironment. Autoantibodies such as rheumatoid factor and anti-citrullinated protein antibodies are found at an early stage, often before arthritis has developed, and they have been implicated in the pathogenesis of RA...
May 15, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28502945/sporotrichal-tenosynovitis-diagnosed-helpfully-by-musculoskeletal-ultrasonography
#12
Takashi Shimizu, Shosuke Akita, Yoshinori Harada, Eri Oguro, Yasutaka Okita, Minoru Shigesaka, Hidetoshi Matsuoka, Takuro Nii, Satoru Teshigawara, Eriko Kudo-Tanaka, Soichiro Tsuji, Masato Matsushita, Shiro Ohshima, Yoshihiko Hoshida, Jun Hashimoto, Yukihiko Saeki
A 72-year-old man presented with persistent oligoarthritis and positive results for rheumatoid factor and was suspected of having rheumatoid arthritis (RA). However, the musculoskeletal ultrasonography (MSUS) findings were not consistent with those of typical RA. He had undergone surgery for carpal tunnel syndrome, which allowed both histopathological and microbiological examinations to be performed. A synovial tissue culture was positive for Sporothrix schenckii, and he was diagnosed with sporotrichal tenosynovitis...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28502293/-wuwei-wentong-chubi-capsule-promotes-the-autophagy-in-synovial-tissue-of-adjuvant-induced-arthritis-rats-and-its-mechanism
#13
Hui Jiang, Xiaochuang Liu, Xiujuan Qin, Junmei Song, Jian Liu
Objective To evaluate the effect of Wuwei Wentong Chubi (WWWTCB) Capsule on the PI3K/AKT/mTOR signaling pathway in the synovial tissues of adjuvant-induced arthritis (AA) rats, and investigate its potential pharmacological mechanisms of treating rheumatoid arthritis. Methods Sixty Sprague Dawley (SD) rats were randomly assigned into six groups evenly: normal group, model group, WWWTCB groups at 0.80, 1.60, 3.20 g/kg body mass, and tripterygium glycosides tablet (TPT) group at 40 mg/kg body mass. Except for the normal group, the other five groups were induced into AA models with Complete Freund's Adjuvant (CFA)...
May 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28502136/cd4-cd25-cd127low-regulatory-t-cells-as-indicator-of-rheumatoid-arthritis-disease-activity
#14
Sahar S Khattab, Amany M El-Saied, Rehab A Mohammed, Eman E Mohamed
Rheumatoid arthritis (RA) is an autoimmune disease characterized by disturbed immune regulation, inducing a progressive cartilage and bone destruction. Despite enrichment of T regulatory cell (T-regs) in synovial fluid, conflicting results are reported concerning T-regs in peripheral blood (PB) of RA patients. To determine possible correlation between the frequency of PB CD4+ CD25+CD127low (T-regs) with RA disease activity. Forty females with RA, classified according to the Disease Activity Score 28 (DAS-28), as highly active, mild-moderate or low disease activity; and 20 age and sex matched healthy controls, were enrolled to study CD4+ CD25+ CD127low T- regs in PB by flow cytometry...
June 2016: Egyptian Journal of Immunology
https://www.readbyqxmd.com/read/28500074/disease-specific-effects-of-matrix-and-growth-factors-on-adhesion-and-migration-of-rheumatoid-synovial-fibroblasts
#15
Stephanie Lefèvre, Maria Schwarz, Florian M P Meier, Birgit Zimmermann-Geller, Ingo H Tarner, Markus Rickert, Jürgen Steinmeyer, Michael Sauerbier, Stefan Rehart, Ulf Müller-Ladner, Elena Neumann
In rheumatoid arthritis (RA), cartilage and bone matrix are degraded, and extracellular matrix (ECM) proteins, acting as cellular activators, are liberated. Similar to ECM proteins, matrix-bound chemokines, cytokines, and growth factors (GFs) influence functional properties of key cells in RA, especially synovial fibroblasts. The role of these molecules on attachment, migration, and proinflammatory and prodestructive activation of RASFs was analyzed. Adhesion/migration of RASFs were examined under GF-enriched (GF(+)) or -reduced (GF(-)) conditions with or without addition of matrix-associated GFs, TGF-β, and platelet-derived GF to GF(-) or culture supernatants...
May 12, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28498398/per2-is-downregulated-by-the-lps-induced-inflammatory-response-in-synoviocytes-in-rheumatoid-arthritis-and-is-implicated-in-disease-susceptibility
#16
Hwayoung Lee, Seong-Su Nah, Sung-Hae Chang, Hyung-Ki Kim, Jun-Tack Kwon, Sanghyun Lee, Ik-Hyun Cho, Sang Won Lee, Young Ock Kim, Seung-Jae Hong, Hak-Jae Kim
The clinical symptoms of rheumatoid arthritis (RA) present with circadian variation, with joint stiffness and pain more prominent in the early morning. The mammalian clock genes, which include circadian locomotor output cycles kaput, brain and muscle Arnt-like protein 1, period and cryptochrome, regulate circadian rhythms. In order to identify the association between genetic polymorphisms in the circadian clock gene period 2 (PER2) and RA, the present study genotyped three PER2 single nucleotide polymorphisms (SNPs), rs934945, rs6754875, and rs2304674, using genetic information from 256 RA patients and 499 control subjects...
May 11, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28497350/synovial-cellular-and-molecular-markers-in-rheumatoid-arthritis
#17
REVIEW
M Asif Amin, David A Fox, Jeffrey H Ruth
The profound alterations in the structure, cellular composition, and function of synovial tissue in rheumatoid arthritis (RA) are the basis for the persistent inflammation and cumulative joint destruction that are hallmarks of this disease. In RA, the synovium develops characteristics of a tertiary lymphoid organ, with extensive infiltration of lymphocytes and myeloid cells. Concurrently, the fibroblast-like synoviocytes undergo massive hyperplasia and acquire a tissue-invasive phenotype. In this review, we summarize key components of these processes, focusing on recently-described roles of selected molecular markers of these cellular components of RA synovitis...
May 11, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28495310/resveratrol-inhibits-urban-particulate-matter-induced-cox-2-pge2-release-in-human-fibroblast-like-synoviocytes-via-the-inhibition-of-activation-of-nadph-oxidase-ros-nf-%C3%AE%C2%BAb
#18
Ming-Horng Tsai, Lee-Fen Hsu, Chiang-Wen Lee, Yao-Chang Chiang, Ming-Hsueh Lee, Jia-Mei How, Ching-Mei Wu, Chieh-Liang Huang, I-Ta Lee
Human fibroblast-like synoviocytes (FLSs) play a role in joint synovial inflammation in rheumatoid arthritis (RA). Some evidence indicates that particulate matter (PM) in air pollution could contribute to the progression of RA. However, more research is needed to clarify this relationship. Up-regulation of cyclooxygenase (COX)-2 and its metabolite prostaglandin E2 (PGE2) are implicated in various inflammatory diseases. Resveratrol, a polyphenol found mainly in grapes and red wine, has antioxidant and anti-inflammatory activities...
May 8, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28493174/genomics-transcriptomics-and-proteomics-to-elucidate-the-pathogenesis-of-rheumatoid-arthritis
#19
REVIEW
Xinqiang Song, Qingsong Lin
Rheumatoid arthritis is an autoimmune disease that affects several organs and tissues, predominantly the synovial joints. The pathogenesis of this disease is not completely understood, which maybe involved in the genomic variations, gene expression, protein translation and post-translational modifications. These system variations in genomics, transcriptomics and proteomics are dynamic in nature and their crosstalk is overwhelmingly complex, thus analyzing them separately may not be very informative. However, various '-omics' techniques developed in recent years have opened up new possibilities for clarifying disease pathways and thereby facilitating early diagnosis and specific therapies...
May 10, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28487948/effect-of-aloe%C3%A2-emodin-on-the-proliferation-and-apoptosis-of-human-synovial-mh7a-cells-a-comparison-with-methotrexate
#20
Motoko Hashiguchi, Kaori Suzuki, Kazuo Kaneko, Isao Nagaoka
Rheumatoid arthritis (RA) is a chronic inflammatory disease characterized by synovial hyperplasia. Methotrexate (MTX), an antifolate derivative, is used for the treatment of RA, as it exerts antiproliferative efftects on lymphocytes and synovial cells. Aloe‑emodin (AE) is a primary component of anthraquinones in Aloe vera and exerts antiproliferative and apoptotic effects on various tumor cells. In the present study, the effect of AE on the proliferation and apoptosis of MH7A human RA synovial cells was examined...
June 2017: Molecular Medicine Reports
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