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https://www.readbyqxmd.com/read/28062298/ccl3-and-mmp-9-are-induced-by-tl1a-during-death-receptor-3-tnfrsf25-dependent-osteoclast-function-and-systemic-bone-loss
#1
Fraser L Collins, Jessica O Williams, Anja C Bloom, Ravinder K Singh, Lauren Jordan, Michael D Stone, Laura R McCabe, Eddie C Y Wang, Anwen S Williams
Reduced bone density and secondary osteoporosis, resulting in increased risk of fracture, is a significant complicating factor in the inflammatory arthritides. While the exact etiology of systemic bone loss is not fully elucidated, recent insights into the tumor necrosis factor super family (TNFSF) revealed a potential role for death receptor 3 (DR3/TNFRSF25) and one of its ligands, TNF-like protein 1A (TL1A/TNFSF15). The mechanisms by which DR3/TL1A signalling modulates bone loss are unclear. We investigated the effect of DR3/TL1A signalling upon osteoclast-dependent chemokine and MMP production to unravel novel mechanisms whereby this pathway regulates OC formation and OC-dependent bone resorption...
January 3, 2017: Bone
https://www.readbyqxmd.com/read/28051887/autoimmunity-as-a-trigger-for-structural-bone-damage-in-rheumatoid-arthritis
#2
Georg Schett
Bone loss is a central feature of rheumatoid arthritis (RA). It is considered to represent a sign of irreversible structural damage triggered by chronic inflammation. Recent evidence, however, suggests that autoantibodies are an important and earlier driver for bone damage in RA. This article summarizes current evidence for the role of RA-related autoantibodies in mediating bone loss. Rheumatoid factor and antibodies recognizing modified (citrullinated) proteins are the central features of autoimmunity in RA patients...
January 9, 2017: Modern Rheumatology
https://www.readbyqxmd.com/read/27998952/fine-mapping-the-mhc-locus-in-juvenile-idiopathic-arthritis-jia-reveals-genetic-heterogeneity-corresponding-to-distinct-adult-inflammatory-arthritic-diseases
#3
A Hinks, J Bowes, J Cobb, H C Ainsworth, M C Marion, M E Comeau, M Sudman, B Han, M L Becker, J F Bohnsack, P I W de Bakker, J P Haas, M Hazen, D J Lovell, P A Nigrovic, E Nordal, M Punnaro, A M Rosenberg, M Rygg, S L Smith, C A Wise, V Videm, L R Wedderburn, A Yarwood, R S M Yeung, S Prahalad, C D Langefeld, S Raychaudhuri, S D Thompson, W Thomson
OBJECTIVES: Juvenile idiopathic arthritis (JIA) is a heterogeneous group of diseases, comprising seven categories. Genetic data could potentially be used to help redefine JIA categories and improve the current classification system. The human leucocyte antigen (HLA) region is strongly associated with JIA. Fine-mapping of the region was performed to look for similarities and differences in HLA associations between the JIA categories and define correspondences with adult inflammatory arthritides...
December 20, 2016: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/27990762/arthroscopic-guided-synovial-biopsy-in-rheumatology-current-perspectives
#4
REVIEW
Mihir D Wechalekar, Malcolm D Smith
Synovial membrane (SM) pathology has provided valuable insights into our current understanding of immunopathological processes and treatment responses in the inflammatory arthritides. Amongst various methods of synovial biopsy, arthroscopic techniques remain the 'gold standard' owing to better sampling from sites of interest, particularly in patients with partially treated disease and from areas within joints that may be difficult to access using other techniques. Newer sophisticated techniques of SM membrane analyses allow assessment of differentially regulated pathways, the knowledge of which may help elucidate diagnostic and therapeutic targets in an attempt towards developing strategies for personalised medicine in the current era of targeted biologic therapies...
December 19, 2016: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/27940635/young-people-s-experiences-of-persistent-musculoskeletal-pain-needs-gaps-and-perceptions-about-the-role-of-digital-technologies-to-support-their-co-care-a-qualitative-study
#5
Helen Slater, Joanne E Jordan, Jason Chua, Robert Schütze, John D Wark, Andrew M Briggs
OBJECTIVE: To investigate young people's experiences of persistent musculoskeletal pain, including care needs and current service gaps as well as perceptions about the role of digital technologies to support their co-care. METHODS: A qualitative study employing two independent data collection modes: in-depth individual semistructured interviews and focus groups. SETTING: Community settings throughout Australia. PARTICIPANTS: Participants were included if they had experienced persistent musculoskeletal pain of >3-month duration with an average of ≥3 on the visual analogue scale over the preceding 3 months, including non-specific conditions (eg, low back pain) and specific conditions (eg, juvenile idiopathic arthritis and other systemic arthritides), with/without pre-existing or current diagnosed mental health conditions...
December 9, 2016: BMJ Open
https://www.readbyqxmd.com/read/27931964/imaging-in-paediatric-rheumatology-is-it-time-for-imaging
#6
REVIEW
Paz Collado, Clara Malattia
Juvenile idiopathic arthritis (JIA) is a heterogeneous group of arthritides characterized by chronic synovial inflammation that can lead to structural damage. The main objective of JIA therapies is to induce disease control to avoid disability in childhood. The advances in therapeutic effectiveness have created a need to search for imaging tools that describe more precisely disease activity in children with JIA. Musculoskeletal ultrasound and magnetic resonance imaging have demonstrated to be more sensitive than clinical examination in early detection of synovitis...
August 2016: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/27909671/endoscopic-resection-of-the-tibialis-anterior-tendon-bursa
#7
Tun Hing Lui
The tibialis anterior tendon bursa is located between the tibialis anterior tendon and the medial cuneiform bone and close to the tendon insertion. Bursitis can occur as a result of excessive local friction, infection, arthritides, or direct trauma. Endoscopic resection of the bursa is indicated in case of symptomatic bursitis that is not responding to conservative treatment or infection is suspected. It is contraindicated if there is skin infection at the portal sites. The purpose of this technical note is to describe a minimally invasive approach of endoscopic resection of the tibialis anterior tendon bursa through anterior tibial tendoscopy...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27886694/update-on-crystal-induced-arthritides
#8
REVIEW
Hossam El-Zawawy, Brian F Mandell
The prevalence of gout increases with age. Once serum concentration of urate exceeds the saturation/solubility point, it deposits in and around the joints. Clinical presentation in the elderly often has "atypical" features and is challenging to diagnose. Treatment depends on the stage of the disease and the patient's health status and comorbidities. Elderly patients often have several confounding issues; thus, treatment decisions can be complicated and therapeutic options limited. To prevent the recurrence of gout attacks, serum concentration of urate should be maintained well below the saturation threshold of 6...
February 2017: Clinics in Geriatric Medicine
https://www.readbyqxmd.com/read/27844039/increased-prevalence-of-autoimmune-disease-within-c9-and-ftd-mnd-cohorts-completing-the-picture
#9
Zachary A Miller, Virginia E Sturm, Gamze Balci Camsari, Anna Karydas, Jennifer S Yokoyama, Lea T Grinberg, Adam L Boxer, Howard J Rosen, Katherine P Rankin, Maria Luisa Gorno-Tempini, Giovanni Coppola, Daniel H Geschwind, Rosa Rademakers, William W Seeley, Neill R Graff-Radford, Bruce L Miller
OBJECTIVE: To determine the prevalence of autoimmune disease in symptomatic C9ORF72 (C9) mutation carriers and frontotemporal dementia with motor neuron disease (FTD/MND) cohorts. METHODS: In this case-control study, we reviewed the clinical histories of 66 patients with FTD/MND and 57 symptomatic C9 carriers (24 overlapping cases), a total of 99 charts, for history of autoimmune disease. The prevalence of autoimmune disease in C9 and FTD/MND cohorts was determined by χ(2) and Fisher exact comparisons between the combined C9 and FTD/MND group with normal control, Alzheimer disease, and progressive supranuclear palsy cohorts, as well as comparisons within C9 and FTD/MND cohorts...
December 2016: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/27788907/%C3%AE-2-macroglobulin-autologous-protease-inhibition-technology
#10
REVIEW
Jason M Cuéllar, Vanessa Gabrovsky Cuéllar, Gaetano J Scuderi
α2-Macroglobulin (A2M) is a plasma glycoprotein best known for its ability to inhibit a broad spectrum of serine, threonine, and metalloproteases as well as inflammatory cytokines by a unique bait-and-trap method. A2M has emerged as a unique potential treatment of cartilage-based pathology and inflammatory arthritides. This article describes the unique method by which A2M not only inhibits the associated inflammatory cascade but also disrupts the catabolic process of cartilage degeneration. Autologous concentrated A2M from plasma is currently in use to successfully treat various painful arthritides...
November 2016: Physical Medicine and Rehabilitation Clinics of North America
https://www.readbyqxmd.com/read/27776554/s100a8-a9-a-potent-serum-and-molecular-imaging-biomarker-for-synovial-inflammation-and-joint-destruction-in-seronegative-experimental-arthritis
#11
Edwin J W Geven, Martijn H J van den Bosch, Irene Di Ceglie, Giuliana Ascone, Shahla Abdollahi-Roodsaz, Annet W Sloetjes, Sven Hermann, Michael Schäfers, Fons A J van de Loo, Peter M van der Kraan, Marije I Koenders, Dirk Foell, Johannes Roth, Thomas Vogl, Peter L E M van Lent
BACKGROUND: Seronegative joint diseases are characterized by a lack of well-defined biomarkers since autoantibodies are not elevated. Calprotectin (S100A8/A9) is a damage-associated molecular pattern (DAMP) which is released by activated phagocytes, and high levels are found in seronegative arthritides. In this study, we investigated the biomarker potential of systemic and local levels of these S100 proteins to assess joint inflammation and joint destruction in an experimental model for seronegative arthritis...
October 24, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27770823/body-mass-index-and-extent-of-mri-detected-inflammation-opposite-effects-in-rheumatoid-arthritis-versus-other-arthritides-and-asymptomatic-persons
#12
Lukas Mangnus, Wouter P Nieuwenhuis, Hanna W van Steenbergen, Tom W J Huizinga, Monique Reijnierse, Annette H M van der Helm-van Mil
BACKGROUND: In the population a high body mass index (BMI) has been associated with slightly increased inflammatory markers. Within rheumatoid arthritis (RA), however, a high BMI has been associated with less radiographic progression; this phenomenon is unexplained. We hypothesized that the phenomenon is caused by an inverse relationship between BMI and inflammation in hand and foot joints with RA. To explore this hypothesis, local inflammation was measured using magnetic resonance imaging (MRI) in early arthritis patients presenting with RA or other arthritides and in asymptomatic volunteers...
October 22, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27748074/preliminary-definitions-for-the-sonographic-features-of-synovitis-in-children
#13
Johannes Roth, Viviana Ravagnani, Marina Backhaus, Peter Balint, Alessandra Bruns, George A Bruyn, Paz Collado, Lorenia De la Cruz, Severine Guillaume-Czitrom, Troels Herlin, Cristina Hernandez, Annamaria Iagnocco, Sandrine Jousse-Joulin, Stefano Lanni, Vibke Lilleby, Clara Malattia, Silvia Magni-Manzoni, Consuelo Modesto, Ana Narrodi, Juan-Carlos Nieto, Sarah Ohrndorf, Linda Rossi, Anne-Marit Selvaag, Nanno Swen, Tracy Ting, Nikolay Tzaribachev, Patricia Vega-Fernandez, Jelena Vojinovic, Daniel Windschall, Maria-Antonietta D'Agostino, Esperanza Naredo
Objectives Musculoskeletal ultrasonography (US) has the potential to be an important tool in the assessment of disease activity in childhood arthritides. To assess pathology, clear definitions for synovitis need to be developed first. The aim of this study was to develop and validate these definitions through an international consensus process. Methods The decision on which US techniques to use, the components to be included in the definitions as well as the final wording were developed by 31 ultrasound experts in a consensus process...
October 16, 2016: Arthritis Care & Research
https://www.readbyqxmd.com/read/27747582/juvenile-idiopathic-arthritis-diagnosis-and-treatment
#14
REVIEW
Gabriella Giancane, Alessandro Consolaro, Stefano Lanni, Sergio Davì, Benedetta Schiappapietra, Angelo Ravelli
Juvenile idiopathic arthritis is a broad term that describes a clinically heterogeneous group of arthritides of unknown cause, which begin before 16 years of age. This term encompasses several disease categories, each of which has distinct presentation, clinical manifestations, and, presumably, genetic background and etiopathogenesis. Although none of the available drugs has curative potential, prognosis has greatly improved as a result of substantial progresses in disease management. The most important new development has been the introduction of the biologic medications, which constitute a valuable treatment option for patients who are resistant to conventional antirheumatic agents...
December 2016: Rheumatology and Therapy
https://www.readbyqxmd.com/read/27742015/imaging-of-inflammatory-arthritis-in-adults-status-and-perspectives-on-the-use-of-radiographs-ultrasound-and-mri
#15
Alissa Jo Burge, O Kenechi Nwawka, Jennifer L Berkowitz, Hollis G Potter
The term inflammatory arthritis encompasses a variety of conditions featuring synovial inflammation as a defining characteristic, with resultant local tissue damage occurring over time. These arthritides often share overlapping clinical and imaging characteristics, although the pattern of joint involvement, specific appearance of pathologic changes, and associated findings often allow imaging-based differentiation or individual arthritides.
November 2016: Rheumatic Diseases Clinics of North America
https://www.readbyqxmd.com/read/27733758/the-danger-from-within-alarmins-in-arthritis
#16
Meriam Nefla, Dirk Holzinger, Francis Berenbaum, Claire Jacques
Alarmins (also known as danger signals) are endogenous molecules that are released to the extracellular milieu after infection or tissue damage. Extracellular alarmins interact with specific receptors expressed by cells that are engaged in host defence to stimulate signalling pathways that result in initiation of innate and adaptive immune responses, triggering inflammation or tissue repair. Alarmins are considered to be markers of destructive processes that occur in degenerative joint diseases (primarily osteoarthritis (OA)) and chronic inflammatory joint diseases (such as rheumatoid arthritis, psoriatic arthritis and spondylarthropathy)...
October 13, 2016: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/27726745/adult-inflammatory-arthritides-what-the-radiologist-should-know
#17
Eric Y Chang, Karen C Chen, Brady K Huang, Arthur Kavanaugh
Developments and improvements in knowledge are rapid and ongoing in both the radiologic and rheumatologic fields. During the past decade, the roles of imaging and the radiologist in the assessment and management of many inflammatory rheumatologic diseases have undergone several changes. To remain effective in patient care, the radiologist needs to be aware of these changes when recommending and interpreting imaging examinations for the referring physician. The goal of contemporary rheumatoid arthritis (RA) management is to redefine RA as a disease that is no longer characterized by erosions, which reflect established or long-standing untreated disease...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27681924/coinfection-of-chlamydiae-and-other-bacteria-in-reactive-arthritis-and-spondyloarthritis-need-for-future-research
#18
REVIEW
Henning Zeidler, Alan P Hudson
Reactive (inflammatory) arthritis has been known for many years to follow genital infection with the intracellular bacterial pathogen Chlamydia trachomatis in some individuals. Recent studies from several groups have demonstrated that a related bacterium, the respiratory pathogen Chlamydia pneumoniae, can elicit a similar arthritis. Studies of these organisms, and of a set of gastrointestinal pathogens also associated with engendering inflammatory arthritis, have been relatively extensive. However, reports focusing on coinfections with these and/or other organisms, and the effects of such coinfections on the host immune and other systems, have been rare...
August 24, 2016: Microorganisms
https://www.readbyqxmd.com/read/27666904/pathogenesis-and-clinical-management-of-gouty-arthritis
#19
Renu Saigal, Abhishek Agrawal
Gout, the most common of the crystal arthritides is a result of disturbed uric acid metabolism and precipitation of urate crystals in extra cellular space of joints, periarticular tissue, bones and other organs. In the West, gout affects around 1% of adult men over 45 years of age. The estimated incidence being 0.6 to 2.1 per 1000 per year, with a prevalence of 9.5 to 13.5 per 1000 persons of all ages.1 The incidence of gout has been on rise globally; potentially attributable to recent shifts in diet, lifestyle, medical care, and increased longevity...
December 2015: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27637347/the-growth-of-arthralgic-ross-river-virus-is-restricted-in-human-monocytic-cells
#20
Pascale Krejbich-Trotot, Essia Belarbi, Miora Ralambondrainy, Chaker El-Kalamouni, Wildriss Viranaicken, Pierre Roques, Philippe Desprès, Gilles Gadea
Alphaviruses such as Chikungunya and Ross River (RRV) viruses are associated with persistent arthritis and arthralgia in humans. Monocytes and macrophages are believed to play an important role in alphaviral arthritides. In this study, we evaluated RRV permissiveness of the human acute leukemia MM6 cell line. Viral growth analysis showed that RRV infection of MM6 cells resulted in a very low virus progeny production with daily output. Using recombinant RRV expressing the reporter gene Renilla luciferase, a weak viral replication level was detected in infected cells at the early stages of infection...
October 2, 2016: Virus Research
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