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https://www.readbyqxmd.com/read/28446897/toll-like-receptor-4-myeloid-differentiation-primary-response-gene-88-pathway-is-involved-in-the-inflammatory-development-of-polymyositis-by-mediating-interferon-%C3%AE-and-interleukin-17a-in-humans-and-experimental-autoimmune-myositis-mouse-model
#1
Hongya Zhang, Fangyuan He, Ming Shi, Wenxiu Wang, Xiaojia Tian, Juan Kang, Wenjuan Han, Rui Wu, Linfu Zhou, Mengmeng Hu, Xiaobo Li, Fang Mi, Gang Zhao, Hongge Jia
OBJECTIVE: Toll-like receptor 4 (TLR4) is one of the key players in the development of many autoimmune diseases. To determine the possible role of TLR4 in polymyositis (PM) development, we collected muscle samples from PM patients and mice subjected to an experimental autoimmune myositis (EAM) model. METHODS: We measured TLR4-MyD88 pathway-related factors, interferon-γ (IFN-γ), and interleukin-17A (IL-17A) in EAM mice and PM patients. Then, we observed the changes of above factors and the inflammatory development of EAM mice with TLR4 antagonist TAK-242, IFN-γ, or IL-17A antibody treatment...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28439062/a-rare-case-of-necrotizing-myopathy-and-fibrinous-and-organizing-pneumonia-with-anti-ej-antisynthetase-syndrome-and-ssa-antibodies
#2
Muhammad Kashif, Divya Arya, Masooma Niazi, Misbahuddin Khaja
BACKGROUND Idiopathic inflammatory myopathies are autoimmune disorders that can involve the skin, joints, muscles, and lungs. The most common of these disorders are dermatomyositis, polymyositis, overlap syndrome, and inclusion body myositis. Necrotizing autoimmune myopathy is an idiopathic inflammatory myopathy that is rarely associated with Sjögren's syndrome. The most common lung findings associated with anti-EJ antisynthetase syndrome are nonspecific interstitial pneumonia and usual interstitial pneumonia; this condition is rarely associated with fibrinous and organizing pneumonia...
April 25, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28435893/opacification-domain-of-serum-opacity-factor-inhibits-beta-hemolysis-and-contributes-to-virulence-of-streptococcus-pyogenes
#3
Luchang Zhu, Randall J Olsen, James M Musser
Serum opacity factor (SOF) is a cell surface virulence factor made by the human pathogen Streptococcus pyogenes. We found that S. pyogenes strains with naturally occurring truncation mutations in the sof gene have markedly enhanced beta-hemolysis. Moreover, deletion of the sof gene in a SOF-positive parental strain resulted in significantly increased beta-hemolysis. Together, these observations suggest that SOF is an inhibitor of beta-hemolysis. SOF has two major functional domains, including an opacification domain and a fibronectin-binding domain...
March 2017: MSphere
https://www.readbyqxmd.com/read/28435850/paraneoplastic-myositis-secondary-to-poorly-differentiated-serous-carcinoma-of-ovarian-tubal-origin
#4
Zachary Raizman, Boshra Hosseini, Sarah Kean, Alon D Altman
•Ovarian cancer can present as paraneoplastic myositis.•Presented with progressive weakness unresponsive to treatment with glucocorticoids•Imaging revealed bilateral ovarian masses, myositis resolved after surgery.•Ovarian cancer should be included on the differential diagnosis of a patient presenting with myositis.
May 2017: Gynecologic Oncology Reports
https://www.readbyqxmd.com/read/28433575/skeletal-myositis-as-the-sole-feature-of-relapsing-drug-reaction-with-eosinophilia-and-systemic-symptoms-syndrome
#5
Jennifer Massey, Kishore Kumar, Karl Ng, James Yun, Suran Fernando
No abstract text is available yet for this article.
April 19, 2017: Annals of Allergy, Asthma & Immunology
https://www.readbyqxmd.com/read/28428721/proposed-criteria-to-differentiate-heterogeneous-eosinophilic-gastrointestinal-disorders-of-the-esophagus-including-eosinophilic-esophageal-myositis
#6
Hiroki Sato, Nao Nakajima, Kazuya Takahashi, Go Hasegawa, Ken-Ichi Mizuno, Satoru Hashimoto, Satoshi Ikarashi, Kazunao Hayashi, Yutaka Honda, Junji Yokoyama, Yuichi Sato, Shuji Terai
AIM: To define clinical criteria to differentiate eosinophilic gastrointestinal disorder (EoGD) in the esophagus. METHODS: Our criteria were defined based on the analyses of the clinical presentation of eosinophilic esophagitis (EoE), subepithelial eosinophilic esophagitis (sEoE) and eosinophilic esophageal myositis (EoEM), identified by endoscopy, manometry and serum immunoglobulin E levels (s-IgE), in combination with histological and polymerase chain reaction analyses on esophageal tissue samples...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28428648/ultrasound-of-ankles-in-the-diagnosis-of-complications-of-chikungunya-fever
#7
Roberto Mogami, João Luiz Pereira Vaz, Yêdda de Fátima Barcelos Chagas, Rodrigo Sperling Torezani, André de Almeida Vieira, Ana Célia Baptista Koifman, Yasmin Baptista Barbosa, Mirhelen Mendes de Abreu
OBJECTIVE: To describe the main ultrasound findings of chikungunya fever in the ankle. MATERIALS AND METHODS: This was a cross-sectional observational study involving 52 patients referred to the Hospital Universitário Pedro Ernesto and presenting with clinical and biochemical evidence of chikungunya fever. The examinations were performed by a radiologist with more than 20 years of experience in ultrasound. RESULTS: The predominant gender was female (in 88...
March 2017: Radiologia Brasileira
https://www.readbyqxmd.com/read/28424681/the-spontaneous-autoimmune-neuromyopathy-in-icosl-nod-mice-is-cd4-t-cell-and-interferon-%C3%AE-dependent
#8
Claire Briet, Gwladys Bourdenet, Ute C Rogner, Chantal Becourt, Isabelle Tardivel, Laurent Drouot, Christophe Arnoult, Jean-Claude do Rego, Nicolas Prevot, Charbel Massaad, Olivier Boyer, Christian Boitard
Abrogation of ICOS/ICOS ligand (ICOSL) costimulation prevents the onset of diabetes in the non-obese diabetic (NOD) mouse but, remarkably, yields to the development of a spontaneous autoimmune neuromyopathy. At the pathological level, ICOSL(-/-) NOD mice show stronger protection from insulitis than their ICOS(-/-) counterparts. Also, the ICOSL(-/-) NOD model carries a limited C57BL/6 region containing the Icosl nul mutation, but, in contrast to ICOS(-/-) NOD mice, no gene variant previously reported as associated to NOD diabetes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424265/effects-of-altered-sialic-acid-biosynthesis-on-n-linked-glycan-branching-and-cell-surface-interactions
#9
Nam D Pham, Poh-Choo Pang, Soumya Krishnamurthy, Amberlyn M Wands, Paola Grassi, Anne Dell, Stuart M Haslam, Jennifer J Kohler
GNE myopathy is a rare muscle disorder associated with aging and is related to sporadic inclusion body myositis (sIBM), the most common acquired muscle disease of aging. While the cause of sIBM is unknown, GNE myopathy is associated with mutations in UDP-GlcNAc 2-epimerase/ManNAc kinase (GNE). GNE harbors two enzymatic activities required for biosynthesis of sialic acid in mammalian cells. Mutations to both GNE domains are linked to GNE myopathy. However, correlation between mutation-associated reductions in sialic acid production and disease severity is imperfect...
April 19, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28423433/-myositis-ossificans-traumatica-in-the-craniocervical-junction-a-case-report-and-review-of-literature
#10
Andreas Reinke, Michael Kraus, Alexander Wild
Background Myosits ossificans (MO) is a rare but important differential diagnosis for a heterotrophic bony tumor in the muscles. It is often misdiagnosed as a malignant tumor. With a previous trauma the diagnosis is myositis ossificans traumatic (MOT). In most cases, it is benign and predominantly seen in the big muscles. But there can be malignant etiologies too. Case Description We report a rare case of MO in the muscle of the craniocervical junction. This 37-year-old woman had a riding accident years ago...
April 19, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28420848/myositis-ossificans-of-the-hip-due-to-pyogenic-arthritis-caused-by-campylobacter-fetus-subspecies-fetus
#11
Sho Nishiguchi, Ichiro Sekine, Shun Kuroda, Morihiko Sato, Izumi Kitagawa
A 61-year-old woman was admitted with severe hip pain causing immobility and high serum levels of inflammatory markers. The patient had a medical history of diabetes. She had been scheduled to undergo right hip replacement surgery for the treatment of osteoarthritis associated with gradually progressive pain. On admission, an enhanced abdominal computed tomography scan showed an abnormal increase in synovial fluid surrounding the right ilium, with piriformis muscle calcification. Subsequent blood and specimen cultures identified Campylobacter fetus subspecies fetus...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28410496/acute-kidney-injury-in-symptomatic-primary-epstein-barr-virus-infectious-mononucleosis-systematic-review
#12
Milena Moretti, Sebastiano A G Lava, Lorenzo Zgraggen, Giacomo D Simonetti, Lisa Kottanattu, Mario G Bianchetti, Gregorio P Milani
BACKGROUND AND OBJECTIVES: Textbooks and reviews do not mention the association of symptomatic primary Epstein-Barr virus infectious mononucleosis with acute kidney injury in subjects without immunodeficiency or autoimmunity. STUDY DESIGN: Stimulated by our experience with two cases, we performed a review of the literature. RESULTS: The literature documents 38 cases (26 male and 12 female individuals ranging in age from 0.3 to 51, median 18 years) of symptomatic primary Epstein-Barr virus infectious mononucleosis complicated by acute kidney injury: 27 acute interstitial nephritides, 1 jaundice-associated nephropathy, 7 myositides and 3 hemolytic uremic syndromes...
March 21, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28405474/rheumatic-immune-related-adverse-events-of-checkpoint-therapy-for-cancer-case-series-of-a-new-nosological-entity
#13
C Calabrese, E Kirchner, K Kontzias, V Velcheti, L H Calabrese
Immunotherapy of cancer with checkpoint inhibitors has been associated with a spectrum of autoimmune and systemic inflammatory reactions known as immune-related adverse events (irAEs). Rheumatic irAEs are infrequently reported and extensively described. Here, we report our experience over an 18-month period with 15 patients evaluated in the rheumatology department for rheumatic irAEs. We identified 13 patients without pre-existing autoimmune disease (AID) who subsequently developed rheumatic irAEs, and two with established AID referred pre-emptively...
2017: RMD Open
https://www.readbyqxmd.com/read/28403889/muscle-mri-at-the-time-of-questionable-disease-flares-in-juvenile-dermatomyositis-jdm
#14
Rabheh Abdul-Aziz, Chack-Yung Yu, Brent Adler, Sharon Bout-Tabaku, Katherine E Lintner, Melissa Moore-Clingenpeel, Charles H Spencer
BACKGROUND: The course of JDM has improved substantially over the last 70 years with early and aggressive treatments. Yet it remains difficult to detect disease flares as symptoms may be mild; signs of rash and muscle weakness vary widely and are often equivocal; laboratory tests of muscle enzyme levels are often normal; electromyography and muscle biopsy are invasive. Alternative tools are needed to help decide if more aggressive treatment is needed. Our objective is to determine the effectiveness of muscle Magnetic Resonance Imaging (MRI) in detecting JDM flares, and how an MRI affects physician's decision-making regarding treatment...
April 12, 2017: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/28396910/hypercalcemia-revealing-diffuse-granulomatous-myositis
#15
Weniko Caré, Estelle Blanc, Jean-Marie Cournac, Caroline Doutrelon, Marc Aletti, Stéphane Lecoules
No abstract text is available yet for this article.
April 10, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28389987/-hiker-s-feet-a-novel-cutaneous-finding-in-the-inflammatory-myopathies
#16
REVIEW
Jacob T Cox, David M Gullotti, Christopher A Mecoli, Arash H Lahouti, Jemima Albayda, Julie Paik, Cheilonda Johnson, Sonye K Danoff, Andrew L Mammen, Lisa Christopher-Stine
Mechanic's hands is a well-characterized manifestation of select idiopathic inflammatory myopathy (IIM) syndromes. Less well characterized is the hyperkeratosis of the toes and plantar surface of the feet that can also accompany these disorders. We aim to describe common pedal signs in the context of IIM, and suggest that it may be another key feature in the presentation of these syndromes. A cohort of 2145 myositis patient charts gathered since 2003 were retrospectively reviewed using the key search terms "mechanic's feet" and/or "mechanic's foot...
April 7, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28385805/2016-american-college-of-rheumatology-european-league-against-rheumatism-criteria-for-minimal-moderate-and-major-clinical-response-in-adult-dermatomyositis-and-polymyositis-an-international-myositis-assessment-and-clinical-studies-group-paediatric-rheumatology
#17
REVIEW
Rohit Aggarwal, Lisa G Rider, Nicolino Ruperto, Nastaran Bayat, Brian Erman, Brian M Feldman, Chester V Oddis, Anthony A Amato, Hector Chinoy, Robert G Cooper, Maryam Dastmalchi, David Fiorentino, David Isenberg, James D Katz, Andrew Mammen, Marianne de Visser, Steven R Ytterberg, Ingrid E Lundberg, Lorinda Chung, Katalin Danko, Ignacio García-De la Torre, Yeong Wook Song, Luca Villa, Mariangela Rinaldi, Howard Rockette, Peter A Lachenbruch, Frederick W Miller, Jiri Vencovsky
To develop response criteria for adult dermatomyositis (DM) and polymyositis (PM). Expert surveys, logistic regression, and conjoint analysis were used to develop 287 definitions using core set measures. Myositis experts rated greater improvement among multiple pairwise scenarios in conjoint analysis surveys, where different levels of improvement in 2 core set measures were presented. The PAPRIKA (Potentially All Pairwise Rankings of All Possible Alternatives) method determined the relative weights of core set measures and conjoint analysis definitions...
May 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28385804/2016-american-college-of-rheumatology-european-league-against-rheumatism-criteria-for-minimal-moderate-and-major-clinical-response-in-juvenile-dermatomyositis-an-international-myositis-assessment-and-clinical-studies-group-paediatric-rheumatology-international
#18
REVIEW
Lisa G Rider, Rohit Aggarwal, Angela Pistorio, Nastaran Bayat, Brian Erman, Brian M Feldman, Adam M Huber, Rolando Cimaz, Rubén J Cuttica, Sheila Knupp de Oliveira, Carol B Lindsley, Clarissa A Pilkington, Marilynn Punaro, Angelo Ravelli, Ann M Reed, Kelly Rouster-Stevens, Annet van Royen-Kerkhof, Frank Dressler, Claudia Saad Magalhaes, Tamás Constantin, Joyce E Davidson, Bo Magnusson, Ricardo Russo, Luca Villa, Mariangela Rinaldi, Howard Rockette, Peter A Lachenbruch, Frederick W Miller, Jiri Vencovsky, Nicolino Ruperto
To develop response criteria for juvenile dermatomyositis (DM). We analysed the performance of 312 definitions that used core set measures from either the International Myositis Assessment and Clinical Studies Group (IMACS) or the Paediatric Rheumatology International Trials Organisation (PRINTO) and were derived from natural history data and a conjoint analysis survey. They were further validated using data from the PRINTO trial of prednisone alone compared to prednisone with methotrexate or cyclosporine and the Rituximab in Myositis (RIM) trial...
May 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28385291/management-of-myositis-ossificans-of-the-hand-a-case-report-and-a-review-of-the-literature
#19
Mohammad M Al-Qattan, Lenah Al-Fahdil, Haifa M Al-Shammari, Amin I Joarder
Myositis ossificans is a rare form of self-limiting heterotopic ossification of muscles. Most cases are seen in the thigh; the standard approach to these cases has been nonsurgical management awaiting spontaneous resolution. We report on a rare case of myositis ossificans of the hand with severe symptoms treated with early marginal excision without a trial of nonsurgical management.
April 3, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28384112/inflammatory-myopathies-with-cutaneous-involvement-from-diagnosis-to-therapy
#20
Lyubomir A Dourmishev
The group of idiopathic inflammatory myopathies (IIM) include various disorders of skeletal muscles with or without skin involvement. The most common types are dermatomyositis (DM), polymyositis (PM), inclusion body myositis (IBM) and necrotizing autoimmune myopathy (NAM). Dermatomyositis subdivides into various clinical forms such as juvenile, amyopathic or paraneoplastic dermatomyositis, scleromyositis, overlap or anti-synthetase syndromes, etc. Recently, numerous new antibodies defining the characteristic clinical phenotype have been described as anti-MDA5 antibodies associated with interstitial lung disease and amyopathic dermatomyositis or anti-TIF1γ antibodies as markers for paraneoplastic dermatomyositis...
March 1, 2017: Folia Medica
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