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Myositis

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https://www.readbyqxmd.com/read/29341517/proliferative-myositis-of-the-latissimus-dorsi-presenting-in-a-20-year-old-male-athlete
#1
N McHugh, R Tevlin, C Beggan, D J Ryan, J Larkin, F Moloney, M W Bennett, J Kelly
We describe the case of a 20-year-old rower presenting with an uncommon condition of Proliferative Myositis (PM) affecting the Latissimus Dorsi (LD). PM is a rare, benign tumour infrequently developing in the upper back. Its rapid growth and firm consistency may mistake it for sarcoma at presentation. Therefore, careful multidisciplinary work-up is crucial, and should involve appropriate radiological and histopathological investigations. Here, we propose the aetiology of LD PM to be persistent myotrauma induced by repetitive rowing motions...
August 8, 2017: Irish Medical Journal
https://www.readbyqxmd.com/read/29340740/-paraneoplastic-syndromes-in-rheumatology
#2
REVIEW
J Leipe, H Schulze-Koops
Malignancies can present as inflammatory rheumatic diseases. These rheumatic paraneoplastic syndromes are rare, but characteristic in their pattern. This article focuses on epidemiology, clinical and diagnostic features as well as treatment of paraneoplasic rheumatic diseases such as paraneoplastic arthritides, vasculitides, myositis and hypertrophic osteoarthropathy. The knowledge of their clinical patterns is of utmost importance for early diagnosis and prognosis of yet undiagnosed malignancies.
January 16, 2018: Der Internist
https://www.readbyqxmd.com/read/29334042/orbital-myositis-an-underrecognized-clinical-syndrome-with-a-need-of-management-guidelines
#3
Leyla Baysal Kirac, Arman Cakar, Yagmur Turkoglu, Hazal-Ceren Ak, Doga Coskun, Sibel Ustun-Ozek, Serap Uçler-Yaman, Betul Baykan
No abstract text is available yet for this article.
January 2018: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/29332184/neurologic-complications-of-immune-checkpoint-inhibitors
#4
Avi Fellner, Chen Makranz, Michal Lotem, Felix Bokstein, Alisa Taliansky, Shai Rosenberg, Deborah T Blumenthal, Jacob Mandel, Suzana Fichman, Elena Kogan, Israel Steiner, Tali Siegal, Alexander Lossos, Shlomit Yust-Katz
Immune checkpoint inhibitors (ICPIs) have recently emerged as a novel treatment for cancer. These agents, transforming the field of oncology, are not devoid of toxicity and cause immune-related side effects which can involve any organ including the nervous system. In this study, we present 9 patients (7 men and 2 women) with neurologic complications secondary to ICPI treatment. These included meningoencephalitis, limbic encephalitis, polyradiculitis, cranial polyneuropathy, myasthenic syndrome and myositis...
January 13, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29330311/necrosis-in-anti-srp-and-anti-hmgcr-myopathies-role-of-autoantibodies-and-complement
#5
Yves Allenbach, Louiza Arouche-Delaperche, Corinna Preusse, Helena Radbruch, Gillian Butler-Browne, Nicolas Champtiaux, Kuberaka Mariampillai, Aude Rigolet, Peter Hufnagl, Norman Zerbe, Damien Amelin, Thierry Maisonobe, Sarah Louis-Leonard, Charles Duyckaerts, Bruno Eymard, Hans-Hilmar Goebel, Cecile Bergua, Laurent Drouot, Olivier Boyer, Olivier Benveniste, Werner Stenzel
OBJECTIVE: To characterize muscle fiber necrosis in immune-mediated necrotizing myopathies (IMNM) with anti-signal recognition particle (SRP) or anti-3-hydroxy-3-methylglutarylcoenzyme A reductase (HMGCR) antibodies and to explore its underlying molecular immune mechanisms. METHODS: Muscle biopsies from patients with IMNM were analyzed and compared to biopsies from control patients with myositis. In addition to immunostaining and reverse transcription PCR on muscle samples, in vitro immunostaining on primary muscle cells was performed...
January 12, 2018: Neurology
https://www.readbyqxmd.com/read/29329211/causation-of-acute-flaccid-paralysis-by-myelitis-and-myositis-in-enterovirus-d68-infected-mice-deficient-in-interferon-%C3%AE-%C3%AE-%C3%AE-receptor-deficient-mice
#6
John D Morrey, Hong Wang, Brett L Hurst, Katherine Zukor, Venkatraman Siddharthan, Arnaud J Van Wettere, Donal G Sinex, E Bart Tarbet
Enterovirus D68 (EV-D68) caused a large outbreak in the summer and fall of 2014 in the United States. It causes serious respiratory disease, but causation of associated paralysis is controversial, because the virus is not routinely identified in cerebrospinal fluid. To establish clinical correlates with human disease, we evaluated EV-D68 infection in non-lethal paralysis mouse models. Ten-day-old mice lacking interferon responses were injected intraperitoneally with the virus. Paralysis developed in hindlimbs...
January 12, 2018: Viruses
https://www.readbyqxmd.com/read/29324290/ross-river-virus-envelope-glycans-contribute-to-disease-through-activation-of-the-host-complement-system
#7
Bronwyn M Gunn, Jennifer E Jones, Reed S Shabman, Alan C Whitmore, Sanjay Sarkar, Lance K Blevins, Thomas E Morrison, Mark T Heise
Mannose binding lectin (MBL) generally plays a protective role during viral infection, yet MBL-mediated complement activation promotes Ross River virus (RRV)-induced inflammatory tissue destruction, contributing to arthritis and myositis. As MBL binds to carbohydrates, we hypothesized that N-linked glycans on the RRV envelope glycoproteins act as ligands for MBL. Using a panel of RRV mutants lacking the envelope N-linked glycans, we found that MBL deposition onto infected cells was dependent on the E2 glycans...
January 8, 2018: Virology
https://www.readbyqxmd.com/read/29321815/circulating-plasma-microrna-profiling-in-patients-with-polymyositis-dermatomyositis-before-and-after-treatment-mirna-may-be-associated-with-polymyositis-dermatomyositis
#8
Takuya Hirai, Keigo Ikeda, Hiroshi Tsushima, Maki Fujishiro, Kunihiro Hayakawa, Yuko Yoshida, Shinji Morimoto, Ken Yamaji, Yoshinari Takasaki, Kenji Takamori, Naoto Tamura, Iwao Sekigawa
Background: MicroRNAs (miRNAs) are involved in the regulation of key biological processes and have been implicated in various diseases, including autoimmune disorders. The pathogenesis of polymyositis (PM) and dermatomyositis (DM) is considered to be mediated by autoimmune reactions. To determine miRNA role in the development and progression of PM and DM, we performed plasma miRNA profiling in PM/DM patients before and after treatment. Methods: Total RNA was isolated from plasma of 10 patients before and after treatment with prednisolone, or, in case of prednisolone resistance or complications, with the combination of calcineurin inhibitors (cyclosporine or tacrolims) and/or pulse intravenous cyclophosphamide...
2018: Inflammation and Regeneration
https://www.readbyqxmd.com/read/29314762/opportunistic-infections-in-patients-with-idiopathic-inflammatory-myopathies
#9
Ada Redondo-Benito, Adrian Curran, Ana Villar-Gomez, Ernesto Trallero-Araguas, Andreu Fernández-Codina, Iago Pinal-Fernandez, Jose Ángel Rodrigo-Pendás, Albert Selva-O'Callaghan
AIM: To describe the prevalence, clinical characteristics and risk factors of opportunistic infection (OI) in a cohort of patients with inflammatory myopathies, and compare mortality rates between those with and without OIs. METHODS: In total, 204 patients from our myositis cohort were reviewed to identify patients who had experienced an OI during the period 1986-2014. The patients' clinical characteristics, treatments received, and outcomes were systematically recorded...
January 5, 2018: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29314651/prevalence-and-predictors-of-asymptomatic-vertebral-fractures-in-inflammatory-myositis
#10
Latika Gupta, Able Lawrence, Sukesh Edavalath, Ramnath Misra
AIM: To assess the frequency and risk factors of asymptomatic vertebral fractures in inflammatory myositis. PATIENTS AND METHODS: Dorsal and lumbar spine lateral radiographs were taken for adults with inflammatory myositis and scored using Genant's semi-quantitative technique. Demographic data, weight, height, postmenopausal status, duration of corticosteroid use, drug intake, co-morbidities and past history of fractures were recorded. Bone mineral density (BMD) was assessed using dual-energy X-ray absorptiometry (DEXA)...
January 5, 2018: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/29311727/eosinophilic-esophageal-myositis-a-plausible-cause-of-histological-changes-of-primary-jackhammer-esophagus-a-case-report
#11
Yurong Tang, Wenjie Xiong, Ting Yu, Meifeng Wang, Guoxin Zhang, Lin Lin
No abstract text is available yet for this article.
January 2018: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/29310344/polymyositis-with-elevated-serum-igg4-levels-and-abundant-igg4-plasma-cell-infiltration-a-case-report-and-literature-review
#12
Ryusuke Anan, Mitsuhiro Akiyama, Yuko Kaneko, Jun Kikuchi, Kazuko Suzuki, Shiro Matsubara, Tsutomu Takeuchi
INTRODUCTION: Polymyositis (PM) is a type of autoimmune, inflammatory myopathy. IgG4-related disease (IgG4-RD) is a recently recognized disease entity characterized by elevated serum IgG4 levels and IgG4 plasma-cell infiltration of various organs. However, several reports have described cases of other diseases that present with those features, suggesting the importance of careful differential diagnosis. Herein, we report the first case of PM with elevated serum IgG4 levels and IgG4 plasma cells in the muscles, mimicking IgG4-RD...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29308284/an-unusual-flare-of-anti-synthetase-syndrome-during-concurrent-trastuzumab-therapy-given-for-recurrent-breast-cancer
#13
Timothy D Reynolds, Vivek Mohan, Matthew Roy, Nathan Manghat, Huzaifa Adamali, Harsha Gunawardena
We present the case of a patient with relapsing anti-synthetase syndrome (ASS) that may have been triggered by monoclonal antibody trastuzumab therapy given for breast cancer. A 52-year-old female with a history of anti-Jo1-associated ASS went into remission with glucocorticoids and mycophenolate mofetil. Her past history included invasive ductal carcinoma of the right breast that was fully treated six years prior to the onset of ASS. She subsequently developed recurrent right-sided breast cancer that was treated with right mastectomy and six cycles of cyclophosphamide-docetaxel chemotherapy...
December 2017: European Journal of Rheumatology
https://www.readbyqxmd.com/read/29301813/paratesticular-myositis-ossificans-of-the-spermatic-cord
#14
Justin M Hintze, Kevin O'Hare, Ted McDermott, Arun Z Thomas
A 56-year-old man presented with a painless scrotal lump, enlarging over the preceding 1 month. The lump was roughly 1 cm in size, and located in his left hemiscrotum and separate from the testis. An ultrasound revealed an echogenic focus with dystrophic tissue calcification. Subsequent surgical excision and histopathological analysis revealed it to be late-stage myositis ossificans, a benign, extraosseous formation of the bone or cartilage. We report of only the second described case of myositis ossificans of the spermatic cord in the literature to date...
January 4, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29296648/nocardiosis-incognito-primary-cutaneous-nocardiosis-with-extension-to-myositis-and-pleural-infection
#15
Nhan M Nguyen, Jacquelyn R Sink, Adam J Carter, Falguni Asrani
No abstract text is available yet for this article.
January 2018: JAAD Case Reports
https://www.readbyqxmd.com/read/29287518/anti-mda5-positive-dermatomyositis-complicated-with-rapidly-progressive-interstitial-lung-disease-a-case-report
#16
Eva De Backer, Félix Gremonprez, Guy Brusselle, Pieter Depuydt, Jo Van Dorpe, Carole Van Haverbeke, Pieter C Goeminne, Eric Derom
CASE PRESENTATION:  We present a case of a 55-year-old Caucasian male with manifestations of dermatomyositis complicated with rapidly progressive interstitial lung disease (RP-ILD). Diagnosis of anti-MDA5 positive dermatomyositis was made. DISCUSSION:  Myositis specific antibodies (MSA) can be used for diagnosis and predicting prognosis in patients with polymyositis and dermatomyositis. Anti-MDA5 positive dermatomyositis should be considered in patients presenting with dermatomyositis and a disease course resembling antisynthetase syndrome in the absence of antisynthetase autoantibodies, especially if a remarkably high ferritin is noted...
December 29, 2017: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29279089/neospora-caninum-bioassay-in-gerbils-using-placental-tissues-from-naturally-infected-goats
#17
R C Costa, L P Mesquita, M V L Nunes, I M Oliveira, L F S Oliveira, Alinne R Souza, P C Maiorka, M S Varaschin
Neospora caninum is one of the main agents that causes abortions in cattle worldwide. However, little is known about the pathogenesis of neosporosis in small ruminants, especially goats. Gerbils (Meriones unguiculatus) have been used as a model for neosporosis, and this species is highly susceptible to infection by bovine N. caninum strains. The present study aimed to evaluate the susceptibility of gerbils to a N. caninum isolate from goats. The placentas were obtained from naturally infected goats, that presented with mild to severe lymphoplasmacytic and histiocytic infiltrate, foci of necrosis, calcification and protozoan-like structures...
January 15, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29245175/development-and-testing-of-a-hybrid-measure-of-muscle-strength-in-juvenile-dermatomyositis-for-use-in-routine-care
#18
Giulia Camilla Varnier, Silvia Rosina, Cristina Ferrari, Angela Pistorio, Alessandro Consolaro, Francesca Bovis, Sara Dalprà, Clarissa Pilkington, Susan Maillard, Adele Civino, Elena Tsitsami, Jaime de Inocencio, Marija Jelusic, Jelena Vojinovic, Graciela Espada, Balahan Makay, Maria Martha Katsicas, Polixeni Pratsidou-Gertsi, Dragana Lazarevic, Anand Prahalad Rao, Denise Pires Marafon, Nicolino Ruperto, Alberto Martini, Angelo Ravelli
OBJECTIVE: To develop and test a hybrid measure of muscle strength for juvenile dermatomyositis (JDM), which is based on the combination of the Manual Muscle Testing 8 (MMT8) and the Childhood Myositis Assessment Scale (CMAS), but is more comprehensive than the former and more feasible than the latter. METHODS: The hybrid MMT/CMAS (hMC) is composed of all 8 items of the MMT8 and 3 items of the CMAS: 1) time of head lift; 2) assessment of abdominal muscles; 3) floor rise...
December 15, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/29241348/the-voice-of-autoimmunity-antisynthetase-syndrome-manifesting-as-vocal-fold-bamboo-nodes
#19
Matthew Kim, Babak Sadoughi
OBJECTIVES: To describe a case of vocal fold bamboo nodes leading to the diagnosis of antisynthetase syndrome, a rare autoimmune disorder. To highlight the link between these laryngeal lesions and autoimmunity. METHODS: A case of vocal fold bamboo nodes in a patient with long-standing interstitial lung disease is presented. The presence of these characteristic lesions prompted a rheumatologic workup that led to the diagnosis of a rare autoimmune disorder. RESULTS: The patient was ultimately diagnosed with antisynthetase syndrome, a rare condition characterized by inflammatory myositis and interstitial lung disease...
December 1, 2017: Annals of Otology, Rhinology, and Laryngology
https://www.readbyqxmd.com/read/29240504/listeria-infection-presenting-as-myositis-and-rhabdomyolysis-needing-renal-replacement
#20
Kyriacos Mouyis, Sabah Ali, John P Corcoran, Amulya Misra
No abstract text is available yet for this article.
December 2, 2017: British Journal of Hospital Medicine
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