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Arthritis Research & Therapy

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https://www.readbyqxmd.com/read/28915847/absence-of-ultrasound-inflammation-in-patients-presenting-with-arthralgia-rules-out-the-development-of-arthritis
#1
Myrthe van der Ven, M van der Veer-Meerkerk, D F Ten Cate, N Rasappu, M R Kok, D Csakvari, J M W Hazes, A H Gerards, J J Luime
BACKGROUND: To decrease the burden of disease of rheumatoid arthritis (RA), patients at risk for RA need to be identified as early as possible, preferably when no clinically apparent synovitis can be detected. Up to now, it has been fairly difficult to identify those patients with arthralgia who develop inflammatory arthritis (IA), but recent studies using ultrasound (US) suggest that earlier detection is possible. We aimed to identify patients with arthralgia developing IA within 1 year using US to detect subclinical synovitis at first consultation...
September 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28915838/gout-and-comorbidity-a-nominal-group-study-of-people-with-gout
#2
Jasvinder A Singh
BACKGROUND: Comorbidities are common in patients with gout, yet qualitative research is lacking. The study objective was to examine the impact of gout on comorbidities. METHODS: Nine nominal groups were conducted. Patients with gout discussed and rank-ordered their concerns in response to the question, "How does gout or its treatment affect your other conditions and their treatment?" RESULTS: Nine nominal groups had 45 gout patients, with mean age 61 years (standard deviation (SD) 10...
September 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28915828/microrna-488-and-920-regulate-the-production-of-proinflammatory-cytokines-in-acute-gouty-arthritis
#3
Weidong Zhou, Ying Wang, Rongfeng Wu, Yan He, Qun Su, Guixiu Shi
BACKGROUND: Gout is considered one of the most painful acute conditions caused by deposition of monosodium urate (MSU) crystals within joints. Recent studies have shown that interleukin (IL)-1β is a key inflammatory mediator in acute gouty arthritis (GA), and its level is regulated by microRNAs (miRNAs). However, the molecular mechanisms of the regulation remain unclear. METHODS: A miRNA microarray was used to analyze the miRNA expression profiles in peripheral white blood cells (WBCs) of patients with GA...
September 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28899428/proximal-tibial-trabecular-bone-mineral-density-is-related-to-pain-in-patients-with-osteoarthritis
#4
Wadena D Burnett, Saija A Kontulainen, Christine E McLennan, Diane Hazel, Carl Talmo, David R Wilson, David J Hunter, James D Johnston
BACKGROUND: Our objective was to examine the relationships between proximal tibial trabecular (epiphyseal and metaphyseal) bone mineral density (BMD) and osteoarthritis (OA)-related pain in patients with severe knee OA. METHODS: The knee was scanned preoperatively using quantitative computed tomography (QCT) in 42 patients undergoing knee arthroplasty. OA severity was classified using radiographic Kellgren-Lawrence scoring and pain was measured using the pain subsection of the Western Ontario and McMaster Universities Arthritis Index (WOMAC)...
September 12, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28899407/association-of-medial-meniscal-extrusion-with-medial-tibial-osteophyte-distance-detected-by-t2-mapping-mri-in-patients-with-early-stage-knee-osteoarthritis
#5
Shinnosuke Hada, Muneaki Ishijima, Haruka Kaneko, Mayuko Kinoshita, Lizu Liu, Ryo Sadatsuki, Ippei Futami, Anwajan Yusup, Tomohiro Takamura, Hitoshi Arita, Jun Shiozawa, Takako Aoki, Yuji Takazawa, Hiroshi Ikeda, Shigeki Aoki, Hisashi Kurosawa, Yasunori Okada, Kazuo Kaneko
BACKGROUND: Medial meniscal extrusion (MME) is associated with progression of medial knee osteoarthritis (OA), but no or little information is available for relationships between MME and osteophytes, which are found in cartilage and bone parts. Because of the limitation in detectability of the cartilage part of osteophytes by radiography or conventional magnetic resonance imaging (MRI), the rate of development and size of osteophytes appear to have been underestimated. Because T2 mapping MRI may enable us to evaluate the cartilage part of osteophytes, we aimed to examine the association between MME and OA-related changes, including osteophytes, by using conventional and T2 mapping MRI...
September 12, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28899403/effects-of-hla-drb1-alleles-on-susceptibility-and-clinical-manifestations-in-japanese-patients-with-adult-onset-still-s-disease
#6
Tomoyuki Asano, Hiroshi Furukawa, Shuzo Sato, Makiko Yashiro, Hiroko Kobayashi, Hiroshi Watanabe, Eiji Suzuki, Tomoyuki Ito, Yoshifumi Ubara, Daisuke Kobayashi, Nozomi Iwanaga, Yasumori Izumi, Keita Fujikawa, Satoshi Yamasaki, Tadashi Nakamura, Tomohiro Koga, Toshimasa Shimizu, Masataka Umeda, Fumiaki Nonaka, Michio Yasunami, Yukitaka Ueki, Katsumi Eguchi, Naoyuki Tsuchiya, Shigeto Tohma, Koh-Ichiro Yoshiura, Hiromasa Ohira, Atsushi Kawakami, Kiyoshi Migita
BACKGROUND: HLA-DRB1 alleles are major determinants of genetic predisposition to rheumatic diseases. We assessed whether DRB1 alleles are associated with susceptibility to particular clinical features of adult onset Still's disease (AOSD) in a Japanese population by determining the DRB1 allele distributions. METHODS: DRB1 genotyping of 96 patients with AOSD and 1,026 healthy controls was performed. Genomic DNA samples from the AOSD patients were also genotyped for MEFV exons 1, 2, 3, and 10 by direct sequencing...
September 12, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28882159/estrogen-attenuates-the-spondyloarthritis-manifestations-of-the-skg-arthritis-model
#7
Hyemin Jeong, Eun-Kyung Bae, Hunnyun Kim, Yeong Hee Eun, In Young Kim, Hyungjin Kim, Jaejoon Lee, Chan Hong Jeon, Eun-Mi Koh, Hoon-Suk Cha
BACKGROUND: Ankylosing spondylitis (AS) is a male-predominant disease, and radiographic evidence of damage is also more severe in males. Estrogen modulates immune-related processes such as T cell differentiation and cytokine production. This study aimed to evaluate the effect of estrogen on the disease activity of spondyloarthritis (SpA). METHODS: The effects of estrogen on the development of arthritis were evaluated by performing ovariectomy and 17β-estradiol (E2) pellet implantation in zymosan-treated SKG mice...
September 7, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28874185/a-novel-susceptibility-locus-in-the-il12b-region-is-associated-with-the-pathophysiology-of-takayasu-arteritis-through-il-12p40-and-il-12p70-production
#8
Toshiki Nakajima, Hajime Yoshifuji, Masakazu Shimizu, Koji Kitagori, Kosaku Murakami, Ran Nakashima, Yoshitaka Imura, Masao Tanaka, Koichiro Ohmura, Fumihiko Matsuda, Chikashi Terao, Tsuneyo Mimori
BACKGROUND: A previous study revealed the association between susceptibility to Takayasu arteritis (TAK) and a single nucleotide polymorphism (SNP) rs6871626 located in IL12B, which encodes interleukin (IL)-12p40, a common component of IL-12p70 and IL-23. We investigated the expression of these cytokines in patients with TAK, stratifying them into those with or without the risk allele at the rs6871626 SNP. METHODS: Plasma levels of IL-12p40, IL-12p70, and IL-23 were quantified in 44 patients with TAK and 19 healthy controls (HCs) by enzyme-linked immunosorbent assays...
September 6, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28870258/opportunities-and-challenges-in-rheumatology-research-in-central-europe
#9
EDITORIAL
Zoltán Szekanecz, Branimir Anic, Gábor Héjj, Iztok Holc, Aniella Hunka, Eugene Kucharz, Klaus Machold, Miroslav Mayer, Artur Pahor, Rudolf Puchner, Jozef Rovensky, Ladislav Senolt, Alena Tuchynova, Jiri Vencovsky, Josef S Smolen
The Central European Congress of Rheumatology (CECR) has been organized by seven Central European countries: Austria, Croatia, Czech Republic, Hungary, Poland, Slovakia, and Slovenia. These countries have lots of similarities, but also differences, with respect to rheumatology research. In this paper, based on questionnaires, we wish to demonstrate achievements and difficulties in rheumatology research performed in our region.
September 4, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28865493/high-titers-of-both-rheumatoid-factor-and-anti-ccp-antibodies-at-baseline-in-patients-with-rheumatoid-arthritis-are-associated-with-increased-circulating-baseline-tnf-level-low-drug-levels-and-reduced-clinical-responses-a-post-hoc-analysis-of-the-rising-study
#10
Tsutomu Takeuchi, Nobuyuki Miyasaka, Takashi Inui, Toshiro Yano, Toru Yoshinari, Tohru Abe, Takao Koike
BACKGROUND: Although both rheumatoid factor (RF) and anticyclic citrullinated peptide antibodies (anti-CCP) are useful for diagnosing rheumatoid arthritis (RA), the impact of these autoantibodies on the efficacy of tumor necrosis factor (TNF) inhibitors has been controversial. The aim of this post hoc analysis of a randomized double-blind study (the RISING study) was to investigate the influences of RF and anti-CCP on the clinical response to infliximab in patients with RA. METHODS: Methotrexate-refractory patients with RA received 3 mg/kg of infliximab from weeks 0 to 6 and then 3, 6, or 10 mg/kg every 8 weeks from weeks 14 to 46...
September 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28865482/decrease-in-bone-mineral-density-during-three-months-after-diagnosis-of-early-rheumatoid-arthritis-measured-by-digital-x-ray-radiogrammetry-predicts-radiographic-joint-damage-after-one-year
#11
Michael Ziegelasch, Kristina Forslind, Thomas Skogh, Katrine Riklund, Alf Kastbom, Ewa Berglin
BACKGROUND: Periarticular osteopenia is an early sign of incipient joint injury in rheumatoid arthritis (RA), but cannot be accurately quantified using conventional radiography. Digital X-ray radiogrammetry (DXR) is a computerized technique to estimate bone mineral density (BMD) from hand radiographs. The aim of this study was to evaluate whether decrease in BMD of the hands (BMD loss), as determined by DXR 3 months after diagnosis, predicts radiographic joint damage after 1 and 2 years in patients with early RA...
September 2, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28841837/decreased-ex-vivo-production-of-interferon-gamma-is-associated-with-severity-and-poor-prognosis-in-patients-with-lupus
#12
Sung Soo Ahn, Eun Seong Park, Joo Sung Shim, Sang-Jun Ha, Beom Seok Kim, Seung Min Jung, Sang-Won Lee, Yong-Beom Park, Jason Jungsik Song
BACKGROUND: Lupus pathogenesis is closely associated with interferon gamma (IFN-γ), which plays a central role in innate and adaptive immunity. The aim of this study was to evaluate the ex vivo production of IFN-γ after stimulation of peripheral blood mononuclear cells with phytohemagglutinin (PHA) in patients with lupus, according to disease activity. METHODS: This study included 118 patients with lupus who had undergone IFN-γ-releasing assays (IGRAs) to screen for tuberculosis...
August 25, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28818099/biosemantics-guided-gene-expression-profiling-of-sj%C3%A3-gren-s-syndrome-a-comparative-analysis-with-systemic-lupus-erythematosus-and-rheumatoid-arthritis
#13
Nirav R Shah, Braxton D Noll, Craig B Stevens, Michael T Brennan, Farah B Mougeot, Jean-Luc C Mougeot
BACKGROUND: Sjögren's syndrome (SS) shares many clinical and pathological similarities with systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). These autoimmune diseases mostly affect women. In this study, concept profile analysis (CPA) and gene expression meta-analysis were used to identify genes potentially involved in SS pathogenesis. METHODS: Human genes associated with SS, SLE, and RA were identified using the CPA tool, Anni 2.1. The differential mRNA expression of genes common to SS and SLE (SS-SLE) was determined in female peripheral blood mononuclear cells (PBMCs) using NCBI-GEO2R...
August 17, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28818095/frequency-distribution-and-immunologic-nature-of-infusion-reactions-in-subjects-receiving-pegloticase-for-chronic-refractory-gout
#14
Leonard H Calabrese, Arthur Kavanaugh, Anthony E Yeo, Peter E Lipsky
BACKGROUND: To assess frequency and distribution of infusion reactions (IRs) in responders and nonresponders in randomized clinical trials (RCTs) of intravenous pegloticase and the utility of the National Institute of Allergy and Infectious Disease/Food and Allergy and Anaphylaxis Network (NIAID/FAAN) criteria for identifying anaphylaxis in subjects experiencing IRs. METHODS: IRs from two RCTs of pegloticase were evaluated and categorized as anaphylaxis, hypersensitivity, or other...
August 17, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28810929/the-impact-of-age-and-gut-microbiota-on-th17-and-tfh-cells-in-k-bxn-autoimmune-arthritis
#15
Fei Teng, Krysta M Felix, C Pierce Bradley, Debdut Naskar, Heqing Ma, Walid A Raslan, Hsin-Jung Joyce Wu
BACKGROUND: Age is an important risk factor for rheumatoid arthritis (RA), which often develops in middle age. However, how age-associated changes in immunity impact RA is poorly understood. Gut microbiota are known to be involved in the pathogenesis of RA, but the effects of microbiota in older subjects remain mostly unknown. METHODS: We used segmented filamentous bacteria (SFB), a gut commensal species with immunomodulatory effects, and K/BxN mice, a T cell receptor (TCR) transgenic model, to study the effect of age and microbiota on autoimmune arthritis...
August 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28810926/the-association-between-sonographic-enthesitis-and-radiographic-damage-in-psoriatic-arthritis
#16
Ari Polachek, Richard Cook, Vinod Chandran, Dafna D Gladman, Lihi Eder
BACKGROUND: To examine the association between sonographic enthesitis and the severity of radiographic features of damage in the peripheral and axial joints in psoriatic arthritis (PsA). METHODS: A cross-sectional analysis was conducted in patients with PsA. The MAdrid Sonography Enthesitis Index (MASEI) scoring system was used to quantify the extent of sonographic entheseal abnormalities. Radiographic damage in the peripheral joints and spine was assessed by the modified Steinbrocker score (mSS), Modified New York Criteria for sacroiliitis, and the modified Stoke Ankylosing Spondylitis Spine Score (mSASSS)...
August 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28810902/the-isotype-and-igg-subclass-distribution-of-anti-carbamylated-protein-antibodies-in-rheumatoid-arthritis-patients
#17
Myrthe A M van Delft, Marije K Verheul, Leonie E Burgers, Veerle F A M Derksen, Annette H M van der Helm-van Mil, Diane van der Woude, Tom W J Huizinga, René E M Toes, Leendert A Trouw
BACKGROUND: Anti-carbamylated protein (anti-CarP) antibodies have recently been reported to occur in around 45% of rheumatoid arthritis (RA) patients and to have prognostic and diagnostic properties. At present, the breadth and molecular make-up of the anti-CarP antibody response is ill defined. To understand the anti-CarP antibody immune response and potential immune effector mechanisms it can recruit, we determined the anti-CarP antibody isotype and IgG-subclass usage in RA patients...
August 15, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28800780/a-novel-scoring-system-based-on-common-laboratory-tests-predicts-the-efficacy-of-tnf-inhibitor-and-il-6-targeted-therapy-in-patients-with-rheumatoid-arthritis-a-retrospective-multicenter-observational-study
#18
Jin Nakagawa, Yoshinobu Koyama, Atsushi Kawakami, Yukitaka Ueki, Hiroshi Tsukamoto, Takahiko Horiuchi, Shuji Nagano, Ayumi Uchino, Toshiyuki Ota, Mitsuteru Akahoshi, Koichi Akashi
BACKGROUND: Currently, although several categories of biological disease-modifying antirheumatic drugs (bDMARDs) are available, there are few data informing selection of initial treatment for individual patients with rheumatoid arthritis (RA). Therefore, tumor necrosis factor inhibitor (TNF-i) and tocilizumab (TCZ) are treated as equivalent treatments in the recent disease management recommendations. We focused on two anticytokine therapies, TCZ and TNF-i, and aimed to develop a scoring system that predicts a better treatment for each RA patient before starting an IL-6 or a TNF-i...
August 11, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28800777/bortezomib-treatment-induces-a-higher-mortality-rate-in-lupus-model-mice-with-a-higher-disease-activity
#19
Tomoko Ikeda, Hiroshi Fujii, Masato Nose, Yukiko Kamogawa, Tsuyoshi Shirai, Yuko Shirota, Tomonori Ishii, Hideo Harigae
BACKGROUND: Bortezomib (Bz) is a proteasome inhibitor that directly targets antibody-producing plasma cells. We recently reported the first randomized control trial that evaluated the effects of Bz in patients with systemic lupus erythematosus (SLE). In that study, we demonstrated that Bz treatment is associated with many adverse reactions in patients with refractory disease. In the present study, we examine the therapeutic and toxic effects of Bz on MRL/MpJ-lpr/lpr (MRL/lpr) mice with severe disease activity...
August 11, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28800775/lack-of-high-bmi-related-features-in-adipocytes-and-inflammatory-cells-in-the-infrapatellar-fat-pad-ifp
#20
Anja J de Jong, Inge R Klein-Wieringa, Stefan N Andersen, Joanneke C Kwekkeboom, Linda Herb-van Toorn, Badelog J E de Lange-Brokaar, Danny van Delft, John Garcia, Wu Wei, Huub J L van der Heide, Yvonne M Bastiaansen-Jenniskens, Gerjo J V M van Osch, Annemarie M Zuurmond, Vedrana Stojanovic-Susulic, Rob G H H Nelissen, René E M Toes, Margreet Kloppenburg, Andreea Ioan-Facsinay
BACKGROUND: Obesity is associated with the development and progression of osteoarthritis (OA). Although the infrapatellar fat pad (IFP) could be involved in this association, due to its intracapsular localization in the knee joint, there is currently little known about the effect of obesity on the IFP. Therefore, we investigated cellular and molecular body mass index (BMI)-related features in the IFP of OA patients. METHODS: Patients with knee OA (N = 155, 68% women, mean age 65 years, mean (SD) BMI 29...
August 11, 2017: Arthritis Research & Therapy
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