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Inflammatory Myopathies

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https://www.readbyqxmd.com/read/28725427/progressive-hypoventilation-due-to-mixed-cd8-and-cd4-lymphocytic-polymyositis-following-tremelimumab-durvalumab-treatment
#1
Sooraj John, Scott J Antonia, Trevor A Rose, Robert P Seifert, Barbara A Centeno, Aaron S Wagner, Ben C Creelan
BACKGROUND: The combination of CTLA-4 and PD-L1 inhibitors has a manageable adverse effect profile, although rare immune-related adverse events (irAE) can occur. CASE PRESENTATION: We describe an autoimmune polymyositis following a partial response to combination tremelimumab and durvalumab for the treatment of recurrent lung adenocarcinoma. Radiography revealed significant reduction in all metastases; however, the patient developed progressive neuromuscular hypoventilation due to lymphocytic destruction of the diaphragmatic musculature...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28721426/co-localization-of-macrophage-inhibitory-factor-and-nix-in-skeletal-muscle-of-the-aged-male-interleukin-10-null-mouse
#2
P Abadir, F Ko, R Marx, L Powell, E Kieserman, H Yang, J Walston
Chronic inflammation is associated with muscle weakness and frailty in older adults. The antagonistic cross-talk between macrophage migration inhibitory factor (Mif), an anti-apoptotic cytokine and NIP3-like protein X (Nix), a pro-apoptotic mitochondrial protein, may play a role in mitochondrial free radical homeostasis and inflammatory myopathies. We examined Nix-Mif interaction in inflammation and aging using young and old, IL-10tm/tm (a rodent model of chronic inflammation) and C57BL/6 mice. In this study, we observed that Nix and Mif were co-localized in skeletal muscles of aged and inflamed mice...
2017: Journal of Frailty & Aging
https://www.readbyqxmd.com/read/28720599/hyperacute-muscle-weakness-in-an-unusual-coexistence-of-antisignal-recognition-particle-and-anti-mi-2-antibodies
#3
Richard Oluyinka Akintayo, Olanrewaju Festus Agbola, Abiodun Waliyullah Adeyemo, Olufemi Adelowo
Idiopathic inflammatory myopathies are a heterogeneous group of systemic diseases characterised by variable phenotypes of chronic progressive muscle weakness. Myositis-specific antibodies (MSAs) include antibodies to cytoplasmic signal recognition particle (SRP) and various tRNA synthetases as well as the nuclear helicase protein Mi-2. These antibodies are typically found only in a fraction of true myositis cases and they tend to be mutually exclusive. Few cases of coexistence of two MSAs in the same patient have been reported and these cases all involve an antisynthetase antibody coexisting with either anti-SRP or anti-Mi-2 antibody...
July 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28718360/inflammatory-myopathy-in-horses-with-chronic-piroplasmosis
#4
Maria P Pasolini, Teresa B Pagano, Alessandro Costagliola, Davide De Biase, Barbara Lamagna, Luigi Auletta, Gerardo Fatone, Michele Greco, Pierpaolo Coluccia, Veneziano Veneziano, Claudio Pirozzi, Giuseppina Mattace Raso, Pasquale Santoro, Giuseppe Manna, Serenella Papparella, Orlando Paciello
Horses affected by chronic piroplasmosis may develop poor performance and muscle atrophy. Here we investigate the pathological and immunopathological aspects of myopathy occurring in chronic equine piroplasmosis. The study included 16 horses serologically positive for equine piroplasms presenting with clinical signs and supporting serum biochemical evidence of a myopathy. Skeletal muscle was evaluated by histopathology, immunohistochemistry, indirect immunofluorescence, and molecular detection of piroplasms and inflammatory cytokines in skeletal muscle...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28717078/dermatomyositis-induced-by-hepatitis-b-virus-related-hepatocellular-carcinoma-a-case-report-and-review-of-the-literature
#5
Jen-Wei Chou, Yin-Lan Lin, Ken-Sheng Cheng, Po-Yuan Wu, Teressa Reanne Ju
Dermatomyositis or polymyositis as a paraneoplastic syndrome of hepatocellular carcinoma (HCC) is an uncommon event. Few cases have been reported in the literature. We herein report the case of a 55-year-old man with chronic hepatitis B and alcoholism who presented with skin rash. Abdominal computed tomography revealed multiple hypervascular liver tumors consistent with HCC. He subsequently developed dysphagia with proximal limb weakness. Laboratory tests and electromyography demonstrated inflammatory myopathy...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28716137/progressive-hypoventilation-due-to-mixed-cd8-and-cd4-lymphocytic-polymyositis-following-tremelimumab-durvalumab-treatment
#6
Sooraj John, Scott J Antonia, Trevor A Rose, Robert P Seifert, Barbara A Centeno, Aaron S Wagner, Ben C Creelan
BACKGROUND: The combination of CTLA-4 and PD-L1 inhibitors has a manageable adverse effect profile, although rare immune-related adverse events (irAE) can occur. CASE PRESENTATION: We describe an autoimmune polymyositis following a partial response to combination tremelimumab and durvalumab for the treatment of recurrent lung adenocarcinoma. Radiography revealed significant reduction in all metastases; however, the patient developed progressive neuromuscular hypoventilation due to lymphocytic destruction of the diaphragmatic musculature...
July 18, 2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28688452/crossroads-between-peripheral-atherosclerosis-western-type-diet-and-skeletal-muscle-pathophysiology-emphasis-on-apolipoprotein-e-deficiency-and-peripheral-arterial-disease
#7
REVIEW
Peggy Sfyri, Antonios Matsakas
Atherosclerosis is a chronic inflammatory process that, in the presence of hyperlipidaemia, promotes the formation of atheromatous plaques in large vessels of the cardiovascular system. It also affects peripheral arteries with major implications for a number of other non-vascular tissues such as the skeletal muscle, the liver and the kidney. The aim of this review is to critically discuss and assimilate current knowledge on the impact of peripheral atherosclerosis and its implications on skeletal muscle homeostasis...
July 8, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28688028/novel-assessment-of-interstitial-lung-disease-using-the-computer-aided-lung-informatics-for-pathology-evaluation-and-rating-caliper-software-system-in-idiopathic-inflammatory-myopathies
#8
Patompong Ungprasert, Katelynn M Wilton, Floranne C Ernste, Sanjay Kalra, Cynthia S Crowson, Srinivasan Rajagopalan, Brian J Bartholmai
PURPOSE: To evaluate the correlation between measurements from quantitative thoracic high-resolution CT (HRCT) analysis with "Computer-Aided Lung Informatics for Pathology Evaluation and Rating" (CALIPER) software and measurements from pulmonary function tests (PFTs) in patients with idiopathic inflammatory myopathies (IIM)-associated interstitial lung disease (ILD). METHODS: A cohort of patients with IIM-associated ILD seen at Mayo Clinic was identified from medical record review...
July 7, 2017: Lung
https://www.readbyqxmd.com/read/28687351/prevalence-of-anti-nt5c1a-antibodies-in-japanese-patients-with-autoimmune-rheumatic-diseases-in-comparison-with-other-patient-cohorts
#9
Yoshinao Muro, Hirotaka Nakanishi, Masahisa Katsuno, Michihiro Kono, Masashi Akiyama
BACKGROUND: Sporadic inclusion body myositis (sIBM) is usually classified as an idiopathic inflammatory myopathies. Although the diagnosis of sIBM is sometimes challenging, recent studies have shown that the autoantibodies against cytosolic 5'-nucleotidase 1A (NT5C1A) are the possible diagnostic biomarker for sIBM. Few reports have shown the frequencies of anti-NT5C1A antibodies in systemic autoimmune rheumatic diseases (SARDs) using large cohorts of SARDs. METHODS: Serum samples obtained from 314 patients including dermatomyositis (DM) (n=144), systemic lupus erythematosus (SLE) (n=50), systemic sclerosis (SSc) (n=50), Sjögren's syndrome (SS) (n=50), polymyositis (PM) (n=10) and mixed connective tissue disease (n=10), and healthy controls (n=42) in addition to 10 patients with typical sIBM were analysed for the presence of autoantibodies using full-length recombinant NT5C1A ELISA...
July 4, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28673815/autoantibodies-to-su-argonaute-2-in-japanese-patients-with-inflammatory-myopathy
#10
Mariko Ogawa-Momohara, Yoshinao Muro, Minoru Satoh, Masashi Akiyama
BACKGROUND: Anti-Su antibodies are found in 5-20% of cases of various systemic autoimmune rheumatic diseases and in 5-10% of dermatomyositis (DM)/polymyositis (PM) patients. In 2006, the 100kDa Su antigen was identified as argonaute2 (Ago2), and it was found to play a major role in RNA interference. However, immunoprecipitation (IP) remains the main method for detecting anti-Su and the clinical significance of the antibodies is uncertain. METHODS: Sera from patients with DM/PM (n=224) were screened by an ELISA that uses recombinant biotinylated Ago2 protein...
June 30, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28672937/is-it-cardiac-involvement-mimicking-acute-myocardial-infarction-in-idiopathic-inflammatory-myopathy
#11
Yizhi Xiao, Hui Luo, Shiqing Liu, Liping Duan, Yunhui You, Hongjun Zhao, Xiaoxia Zuo
Idiopathic inflammatory myopathy (IIM) comprises a group of rare systemic diseases characterized by progressive weakness of the symmetrical proximal limb muscles, elevated muscle enzymes, inflammation or necrosis on muscle biopsy. IIM may impair the function of multiple organs, particularly the heart. However, it rarely manifests as acute myocardial infarction (AMI) at initial presentation. The present study described the case of a 39-year-old woman with AMI, whose muscle biopsy on the left arm conformed to polymyositis...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28668260/-amyopathic-dermatomyositis-dm-with-anti-mda5-antibodies-associated-with-bullous-pemphigoid-sj%C3%A3-gren-syndrome-and-gastric-malt-lymphoma
#12
B Garcia, F Dabouz, L Pascal, M Gillard, P Modiano
BACKGROUND: The inflammatory myopathies are a heterogeneous group of muscle diseases and comprise polymyositis, dermatomyositis (DM), myopathies associated with cancers, necrotising myositis and inclusion body myositis. DM occasionally exhibits few or no muscular signs: i.e. hypomyopathic/amyopathic DM. Anti-MDA5 dermatomyositis (DM) is a rare form of dermatomyositis that is frequently amyopathic; the prognosis is linked mainly to pulmonary involvement. PATIENTS AND METHODS: A 69-year-old woman treated for mucosa-associated lymphoid tissue (MALT) gastric lymphoma was referred for a bullous eruption...
June 28, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28660228/necrotizing-autoimmune-myopathy-a-rare-variant-of-idiopathic-inflammatory-myopathies
#13
Noman Ahmed Jang Khan, Shaza Khalid, Saad Ullah, Muhammad Umair Malik, Samer Makhoul
Idiopathic inflammatory myopathies are an unusual group of myopathies with annual incidence of 1 in 100 000 people in the United States. Necrotizing autoimmune myopathy comprises only 16% of this group. It usually presents with severe proximal weakness, lower extremity weakness, and severe fatigue while very rarely does it present with dysphagia and respiratory muscle weakness. Statin use, cancer, and connective tissue disorder are the usual associated risk factors. Anti-signal recognition particle and 3-hydroxy-3-methylglutaryl-coenzyme A reductase are the 2 most common autoantibodies associated with necrotizing autoimmune myopathy...
April 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28660085/dermatomyositis-associated-with-myelofibrosis-following-polycythemia-vera
#14
Naomi Fei, Sarah Sofka
Dermatomyositis (DM) is a unique inflammatory myopathy with clinical findings of proximal muscle weakness, characteristic rash, and elevated muscle enzymes. The association of DM and malignancy, most commonly adenocarcinoma, is well known. There have been few case reports of primary myelofibrosis associated with DM. We present the case of a 69-year-old male with a history of polycythemia vera (PV) who developed proximal muscle weakness, dysphagia, and rash. He was found to have elevated creatinine kinase and skin biopsy was consistent with DM...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28652434/elevated-il-4-and-ifn-%C3%AE-levels-in-muscle-tissue-of-patients-with-dermatomyositis
#15
Murat Giriş, Hacer Durmuş, Berrak Yetimler, Hatice Taşli, Yeşim Parman, Erdem Tüzün
BACKGROUND/AIM: To investigate the contribution of muscle tissue-derived cytokines in dermatomyositis (DM). MATERIALS AND METHODS: Muscle homogenates were prepared from deltoid muscle biopsy specimens of 10 patients with DM and eight controls with no pathological signs of myopathy. Interleukin (IL)-4, interferon (IFN)-γ and IL-17 levels were evaluated by enzyme-linked immunosorbent assay (ELISA) and immunoblotting analysis. Muscle strength grades were recorded...
July 2017: In Vivo
https://www.readbyqxmd.com/read/28645253/a-case-report-of-thoracolumbar-paraspinal-myopathy-as-the-cause-of-camptocormia-in-a-patient-with-atypical-parkinsonism
#16
Yoon Kim, Ahro Kim, Aryun Kim, Beomseok Jeon
BACKGROUND: Camptocormia is severe flexion of the thoracolumbar spine, exaggerated during standing and walking but minimized in supine position. Even though camptocormia is a relatively common condition during the course of Parkinson's disease, there is ongoing controversy concerning its mechanisms. The most widely accepted and yet still disputed one is dystonia. However, based on myopathic changes observed in the paraspinal muscle biopsies of some PD patients with camptocormia, the attempt to attribute camptocormia to myopathy has continued...
June 23, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28609139/evidence-and-role-of-phlebitis-and-lipid-infiltration-in-the-onset-and-pathogenesis-of-wooden-breast-disease-in-modern-broiler-chickens
#17
Michael Babak Papah, Erin Brannick, Carl J Schmidt, Behnam Abasht
Wooden Breast Disease (WBD), a myopathy that frequently affects modern broiler chickens, is a disorder that has been associated with significant economic losses in the poultry industry. To examine tissue changes associated with the onset and early pathogenesis of this disorder, a time-series experiment was conducted using chickens from a high-breast-muscle-yield, purebred commercial broiler line. Birds were raised for up to seven weeks, with a subset of birds sampled weekly. Breast muscle tissues were extracted at necropsy and processed for analysis by light microscopy and transmission electron microscopy...
June 13, 2017: Avian Pathology: Journal of the W.V.P.A
https://www.readbyqxmd.com/read/28606408/-common-therapeutic-approaches-of-sarcopenia-in-the-elderly-and-uremic-myopathy
#18
Philippe Chauveau, Karine Moreau, Catherine Lasseur, Christian Combe, Michel Aparicio
The gradual loss of weight and function of muscle in patients with chronic kidney disease as in the elderly impacts the quality of life. Early management should help slow the functional limitation. Physical activity is the first therapy to propose that ensures stability of muscle mass and improved function. Resistance training programs have proven effective but are not yet widely available in nephrology units. The nutritional management should not be forgotten because there is a resistance to anabolism and protein intake should be involved in physical activity program...
June 9, 2017: Néphrologie & Thérapeutique
https://www.readbyqxmd.com/read/28602176/calpainopathy-with-macrophage-rich-regional-inflammatory-infiltrates
#19
Peter W Schutz, Renata S Scalco, Rita Barresi, Henry Houlden, Matthew Parton, Janice L Holton
Mutations in calpain-3 cause limb girdle muscular dystrophy 2A. Biopsy pathology is typically dystrophic, sometimes characterized by frequent lobulated fibres. More recently calpain mutations have been shown in association with eosinophilic myositis, suggesting that calpain mutations may render muscle susceptible to inflammatory change. We present the case of a 33-year old female with mild proximal muscle weakness and high CK levels (6698 IU/L at presentation). Muscle biopsy showed clusters of fibre necrosis associated with very dense macrophage infiltrates and small numbers of lymphocytes, raising the possibility of an inflammatory myopathy...
April 27, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28592916/a-reduction-in-selenoprotein-s-amplifies-the-inflammatory-profile-of-fast-twitch-skeletal-muscle-in-the-mdx-dystrophic-mouse
#20
Craig Robert Wright, Giselle Larissa Allsopp, Alex Bernard Addinsall, Natasha Lee McRae, Sofianos Andrikopoulos, Nicole Stupka
Excessive inflammation is a hallmark of muscle myopathies, including Duchenne muscular dystrophy (DMD). There is interest in characterising novel genes that regulate inflammation due to their potential to modify disease progression. Gene polymorphisms in Selenoprotein S (Seps1) are associated with elevated proinflammatory cytokines, and in vitro SEPS1 is protective against inflammatory stress. Given that SEPS1 is highly expressed in skeletal muscle, we investigated whether the genetic reduction of Seps1 exacerbated inflammation in the mdx mouse...
2017: Mediators of Inflammation
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