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https://www.readbyqxmd.com/read/29020715/diagnosis-and-management-of-polymyalgia-rheumatica
#1
REVIEW
Olwyn Jones, Fraser Birrell
Polymyalgia rheumatica (PMR) is a common inflammatory condition of unknown aetiology with a prevalence of 1 in 133 in the over 50s, and a female to male ratio of 2:1. Symptoms develop over a matter of weeks; typically bilateral shoulder or pelvic girdle pain and stiffness, that is worse in the mornings. Associated symptoms include low-grade fever, malaise, fatigue, low mood, poor appetite, and weight loss. There is no specific diagnostic test for PMR but the usual pattern is a commensurate rise in CRP and ESR...
December 2016: Practitioner
https://www.readbyqxmd.com/read/28983760/chikungunya-virus-associated-disease
#2
REVIEW
C Hua, B Combe
PURPOSE OF REVIEW: Chikungunya virus (CHIKV) infection has become increasingly prevalent in the last decade not only across the southern hemisphere but also, because of a recently documented viral mutation, in southern Europe and the USA. With the global spread of CHIKV infection, practitioners should know its epidemiology, pathophysiology and clinical features. RECENT FINDINGS: The acute phase of CHIKV disease is characterised by a fever-arthralgia-rash syndrome...
October 5, 2017: Current Rheumatology Reports
https://www.readbyqxmd.com/read/28975975/mir-20a-regulates-fibroblast-like-synoviocyte-proliferation-and-apoptosis-in-rheumatoid-arthritis
#3
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/28965939/impaired-intracellular-pathogen-clearance-and-inflammatory-joint-disease-is-whipple-s-disease-a-guiding-light
#4
Jean-Marie Berthelot, Xavier Puéchal
Whipple's disease can mimic spondyloarthritis (SpA) or rheumatoid arthritis (RA) for many years and, in a few cases, induces the development of antibodies to cyclic citrullinated peptides. The causative agent Tropheryma whipplei can smolder within cells, including macrophages, by suppressing the xenophagic process, a type of selective autophagy that targets pathogens. Other inflammatory joint diseases may also stem from impaired xenophagy with persistence of bacteria or viruses that can eventually migrate from the mucous membranes to the joints and entheses, where they may exert adverse effects on immune responses, even if they fail to replicate...
September 28, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28930753/camel-milk-attenuates-rheumatoid-arthritis-via-inhibition-of-mitogen-activated-protein-kinase-pathway
#5
Hany H Arab, Samir A Salama, Tamer M Abdelghany, Hany A Omar, El-Shaimaa A Arafa, Majed M Alrobaian, Ibrahim A Maghrabi
BACKGROUND/AIMS: Camel milk (CM) has shown beneficial anti-inflammatory actions in several experimental and clinical settings. So far, its effect on rheumatoid arthritis (RA) has not been previously explored. Thus, the current work aimed to evaluate the effects of CM in Adjuvant-induced arthritis and air pouch edema models in rats, which mimic human RA. METHODS: CM was administered at 10 ml/kg orally for 3 weeks starting on the day of Freund's adjuvant paw inoculation...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28879569/-virus-associated-arthritis
#6
F Günther, M Fleck, B Bach
Epidemiological studies suggest a viral etiology in approximately 1% of patients presenting with acute arthritis. The arthritogenic effect of viral infections may be related to viral invasion of synovial cells, the cellular and humoral immune response to viral antigens or by induction of autoimmunity. Viral arthritis can mimic rheumatoid arthritis by presenting as a symmetrical polyarticular disease often accompanied by a rash and influenza-like symptoms. Serological testing for pathogen-specific IgM and IgG antibodies is frequently performed for establishing a viral etiology of arthritis...
October 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28840350/regulatory-t-cells-and-il-10-as-modulators-of-chikungunya-disease-outcome-a-preliminary-study
#7
S P Kulkarni, M Ganu, P Jayawant, S Thanapati, A Ganu, A S Tripathy
Regulatory T (Treg) cells hold centre stage in regulating the immune responses in most viral infections. However, their involvement in chikungunya infection is unexplored. In the current study, the frequencies and functionality of peripheral Treg and T effector (Teff) cells were assessed during different phases of chikungunya by flow cytometry and in-vitro cytokine assays. Treg cells were also studied in rheumatoid arthritis (RA) patients, whose symptoms closely mimic chronic chikungunya arthritis patients...
December 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28819596/complex-regional-pain-syndrome-following-an-episode-of-herpes-zoster-a-case-report
#8
Christopher E Marrero, Neuyen Mclean, Keyana Varnado
INTRODUCTION: Complex regional pain syndrome (CRPS) is characterized by searing pain, hyperalgesia, edema, allodynia, and skin changes. CRPS may be difficult to diagnose and to treat given poorly understood mechanisms as well as its presentation of symptoms that may mimic common conditions such as joint stiffness in this condition as well as rheumatoid arthritis. CASE REPORT: A 71-year-old female presented to our clinic post shingles of the right upper extremity...
March 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28808511/large-endocardial-rheumatoid-nodules-a-case-report-and-review-of-the-literature
#9
Allen Vantrease, Christopher Trabue, James Atkinson, Paul McNabb
Rheumatoid nodules occur frequently in patients with rheumatoid arthritis and are the most common cutaneous manifestation of the disease. Although uncommon, rheumatoid nodules may also occur on cardiac valves, where they may be large and clinically significant. They may embolize and cause stroke. They may cause regurgitant murmurs, or they may result in valvular destruction. Echocardiographically, they may mimic an atrial myxoma or appear as a vegetation. We present a patient with seronegative rheumatoid arthritis who developed an acute embolic stroke; he had peripheral stigmata of infective endocarditis on physical examination and echocardiography revealed a mitral valve vegetation...
July 2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/28782180/down-regulation-of-mir-10a-5p-in-synoviocytes-contributes-to-tbx5-controlled-joint-inflammation
#10
Nazim Hussain, Wenhua Zhu, Congshan Jiang, Jing Xu, Xiaoying Wu, Manman Geng, Safdar Hussain, Yongsong Cai, Ke Xu, Peng Xu, Yan Han, Jian Sun, Liesu Meng, Shemin Lu
MicroRNAs are considered to play critical roles in the pathogenesis of human inflammatory arthritis, including rheumatoid arthritis (RA). The purpose of this study was to determine the relationship between miR-10a-5p and TBX5 in synoviocytes and evaluate their contribution to joint inflammation. The expression of miR-10a-5p and TBX5 in the synovium of RA and human synovial sarcoma cell line SW982 stimulated by IL-1β was determined by RT-qPCR and Western blotting. The direct interaction between miR-10a-5p and TBX5 3'UTR was determined by dual-luciferase reporter assay in HeLa cells...
August 7, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28742830/regulatory-effects-of-zinc-on-cadmium-induced-cytotoxicity-in-chronic-inflammation
#11
Paola Bonaventura, Aline Lamboux, Francis Albarède, Pierre Miossec
OBJECTIVES: Zinc (Zn) has major effects on immune system activation while Cadmium (Cd) has anti-inflammatory and anti-proliferative effects in several chronic inflammatory contexts. The aim of this work was to investigate by which mechanisms Zn could compete with Cd and eventually counteract its deleterious effects. Rheumatoid arthritis (RA) synoviocytes exposed to cytokines were used as a model of chronic inflammation; osteoarthritis (OA) synoviocytes were used as control. METHODS: Cell/medium fractionation constants were analyzed for different metals by inductively-coupled-plasma mass-spectrometry by comparison to the 70Zn spike...
2017: PloS One
https://www.readbyqxmd.com/read/28738524/elevated-microrna-125b-promotes-inflammation-in-rheumatoid-arthritis-by-activation-of-nf-%C3%AE%C2%BAb-pathway
#12
Bo Zhang, Li-Song Wang, Yu-Hu Zhou
microRNA-125b (miR-125b) has been reported to be increased in rheumatoid arthritis (RA). However, the role of miR-125b in RA remains to be fully elucidated. We aimed to explore the functional role of miR-125b in RA, as well as the underlying mechanism. The expression of miR-125b in serum and synovial tissues of patients with RA and healthy controls was confirmed. In addition, the levels of miR-125b in lipopolysaccharide (LPS)-stimulated fibroblast-like synoviocytes (FLS) were also measured. FLS were transfected with miR-125b mimic, antisense oligonucleotides (ASO)-miR-125b, pcDNA-inhibitor of NF-κB (IκB)-α or corresponding controls, and then stimulated with LPS or incubated with nuclear factor kappa B (NF-κB) inhibitors pyrrolidine dithiocarbamate (PDTC)...
September 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28687071/recurrence-of-visceral-and-muco-cutaneous-leishmaniasis-in-a-patient-under-immunosuppressive-therapy
#13
Gilles Darcis, Gert Van der Auwera, Jean-Baptiste Giot, Marie-Pierre Hayette, Françoise Tassin, Jorge Arrese Estrada, Lieselotte Cnops, Michel Moutschen, Laurence de Leval, Philippe Leonard
BACKGROUND: Leishmaniasis is a protozoan disease caused by parasites of the genus Leishmania, transmitted to humans by sandflies. The diagnosis of leishmaniasis is often challenging as it mimics many other infectious or malignant diseases. The disease can present in three ways: cutaneous, mucocutaneous, or visceral leishmaniasis, which rarely occur together or consecutively. CASE PRESENTATION: The patient was a 52 years old immunosuppressed Belgian woman with a long history of severe rheumatoid arthritis...
July 7, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28620373/mechanisms-of-autoantibody-induced-pathology
#14
REVIEW
Ralf J Ludwig, Karen Vanhoorelbeke, Frank Leypoldt, Ziya Kaya, Katja Bieber, Sandra M McLachlan, Lars Komorowski, Jie Luo, Otavio Cabral-Marques, Christoph M Hammers, Jon M Lindstrom, Peter Lamprecht, Andrea Fischer, Gabriela Riemekasten, Claudia Tersteeg, Peter Sondermann, Basil Rapoport, Klaus-Peter Wandinger, Christian Probst, Asmaa El Beidaq, Enno Schmidt, Alan Verkman, Rudolf A Manz, Falk Nimmerjahn
Autoantibodies are frequently observed in healthy individuals. In a minority of these individuals, they lead to manifestation of autoimmune diseases, such as rheumatoid arthritis or Graves' disease. Overall, more than 2.5% of the population is affected by autoantibody-driven autoimmune disease. Pathways leading to autoantibody-induced pathology greatly differ among different diseases, and autoantibodies directed against the same antigen, depending on the targeted epitope, can have diverse effects. To foster knowledge in autoantibody-induced pathology and to encourage development of urgently needed novel therapeutic strategies, we here categorized autoantibodies according to their effects...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28587313/microrna-223-3p-regulates-ovarian-cancer-cell-proliferation-and-invasion-by-targeting-sox11-expression
#15
Gang Fang, Jiao Liu, Qianna Wang, Xueqiong Huang, Runwen Yang, Yuzhou Pang, Meichun Yang
MicroRNAs (miRNAs) often display different expression in many cancers and other diseases in current research studies. miR-223 expression is upregulated in rheumatoid arthritis. Also, miR-223 expression has been demonstrated to be highly expressed in pancreatic cancer and gastric cancer in comparison with normal tissue. However, whether miR-223 displays different expression in ovarian cancer and what its underlying functions are in ovarian cancer have remained unclear. In this study, we demonstrated that miR-223-3p was upregulated in ovarian cancer tissue...
June 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28545554/whipple-s-disease-mimicking-rheumatoid-arthritis-can-cause-misdiagnosis-and-treatment-failure
#16
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/28528333/effect-of-1-25-oh-2d3-on-proliferation-of-fibroblast-like-synoviocytes-and-expressions-of-pro-inflammatory-cytokines-through-regulating-microrna-22-in-a-rat-model-of-rheumatoid-arthritis
#17
Ping Fan, Lan He, Nan Hu, Jing Luo, Jing Zhang, Ling-Fei Mo, Yan-Hua Wang, Dan Pu, Xiao-Hong Lv, Zhi-Ming Hao, Chang-Hai Ding, Wu-Jun Xue, Yang Li
OBJECTIVE: This study aims to investigate the regulatory mechanism of 1,25-(OH)2D3 on the proliferation of fibroblast-like synoviocytes (FLS) and expressions of pro-inflammatory cytokines in rheumatoid arthritis (RA) rats via microRNA-22 (miR-22). METHODS: A rat model of RA was established with a subcutaneous injection of type II collagen. After treated with different concentrations of 1,25-(OH)2D3 the proliferation of FLS was estimated by the MTT method, and the optimal concentration of 1,25-(OH)2D3 was selected for further experiments...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28409894/genomic-responses-of-mouse-synovial-fibroblasts-during-tumor-necrosis-factor-driven-arthritogenesis-greatly-mimic-those-in-human-rheumatoid-arthritis
#18
Evangelos Ntougkos, Panagiotis Chouvardas, Fani Roumelioti, Caroline Ospelt, Mojca Frank-Bertoncelj, Andrew Filer, Christopher D Buckley, Steffen Gay, Christoforos Nikolaou, George Kollias
OBJECTIVE: Aberrant activation of synovial fibroblasts is a key determinant in the pathogenesis of rheumatoid arthritis (RA). The aims of this study were to produce a map of gene expression and epigenetic changes occurring in this cell type during disease progression in the human tumor necrosis factor (TNF)-transgenic model of arthritis and to identify commonalities with human synovial fibroblasts. METHODS: We used deep sequencing to probe the transcriptome, the methylome, and the chromatin landscape of cultured mouse arthritogenic synovial fibroblasts at 3 stages of disease, as well as synovial fibroblasts stimulated with human TNF...
August 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28408930/a-case-of-initially-undiagnosed-chikungunya-arthritis-developing-into-chronic-phase-in-a-nonendemic-area
#19
Pui Shan Julia Chan, Moon Ho Leung
This case report described a 40-year-old lady presented with fever, headache, arthralgia, myalgia, and impaired liver function after returning from the Philippines. Chikungunya virus (CHIKV) and dengue serology were negative. Eight weeks after initial presentation, she experienced inflammatory polyarthritis mimic rheumatoid arthritis. This time CHIKV-IgM was detected, together with a >4-fold rise of CHIKV-polyvalent-antibody titre. The first CHIKV-IgM negative sample was reexamined and was CHIKV-PCR positive...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28401267/paeonol-protects-against-tnf-%C3%AE-induced-proliferation-and-cytokine-release-of-rheumatoid-arthritis-fibroblast-like-synoviocytes-by-upregulating-foxo3-through-inhibition-of-mir-155-expression
#20
Ning Liu, Xue Feng, Wenbo Wang, Xingkai Zhao, Xia Li
BACKGROUND: Fibroblast-like synoviocytes (FLS) play an essential role in the pathogenesis of chronic inflammatory diseases, such as rheumatoid arthritis. Paeonol (Pae) is a phenolic compound found in many traditional Chinese medicine remedies. However, the effects of Pae on TNF-α-stimulated FLS and the underlying molecular mechanism are unknown. In this study, we aimed to investigate the anti-proliferative and anti-inflammatory effect of Pae against activated FLS. MATERIALS AND METHODS: Rheumatoid arthritis FLS (RA-FLS) were pre-treated with different doses (25, 50, and 100 µM) of Pae or miR-155 inhibitor for 30 min or transfected with miR-155 mimic, and then treated with 50 ng/mL of tumor necrosis factor alpha (TNF-α) for 1 h...
July 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
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