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Inflammatory Myopathies

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https://www.readbyqxmd.com/read/29768134/mtor-signalling-jack-of-all-trades
#1
Yassine El Hiani, Emmanuel E Egom, Xian-Ping Dong
The mechanistic target of rapamycin (mTOR) is an evolutionarily conserved serine/threonine kinase that senses and integrates environmental information into cellular regulation and homeostasis. Accumulating evidence has suggested a master role of mTOR signaling in many fundamental aspects of cell biology and organismal development. mTOR deregulation is implicated in a broad range of pathological conditions, including diabetes, cancer, neurodegenerative diseases, myopathies, inflammatory, infectious and autoimmune conditions...
May 16, 2018: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/29766941/idiopathic-inflammatory-myopathies-in-adults-a-comparative-study-of-bohan-and-peter-and-european-neuromuscular-center-2004-criteria
#2
Sundaram Challa, Saumya Jakati, Megha S Uppin, Meena A Kannan, Rajasekhar Liza, M K Murthy Jagarlapudi
Background: Bohan and Peter criteria are widely used for the diagnosis of idiopathic inflammatory myopathies (IIMs). Recently, European Neuromuscular Center (ENMC) formulated criteria to identify subgroups of IIMs. Aim: To compare the two diagnostic criteria in adult IIMs. Materials and Methods: This was a retrospective review of case records of histologically confirmed IIMs in adults between January 2014 and May 2015. Both the Bohan and Peter, and ENMC 2004 criteria were applied in the same group of patients to subgroup the IIMs...
May 2018: Neurology India
https://www.readbyqxmd.com/read/29761224/cardiopulmonary-factors-affecting-6-min-walk-distance-in-patients-with-idiopathic-inflammatory-myopathies
#3
Naoki Mugii, Fujiko Someya
Idiopathic inflammatory myopathies involve skeletal muscles and can be associated with interstitial lung disease and/or heart dysfunction, which may reduce exercise capacity. We aimed to clarify cardiopulmonary factors affecting the 6-min walk distance in patients who were able to walk without leg pain or fatigue. Twenty-three patients with inactive adult idiopathic inflammatory myopathies, and 18 age- and gender-matched healthy controls were evaluated for hemodynamic responses using noninvasive impedance cardiography during the 6-min walk test...
May 14, 2018: Rheumatology International
https://www.readbyqxmd.com/read/29756581/musculoskeletal-involvements-in-sarcoidosis-a-narrative-review
#4
Roshanak Salari, Somayeh Shariatmaghani, Maryam Sahebari, Payman Shalchiantabrizi, Masoumeh Salari
Sarcoidosis is a multisystem inflammatory disease with an etiology that is not clearly understood. Amongst the different organs that may be affected, the lungs are the most common. Musculoskeletal manifestations of the disease are uncommon. They include arthropathy, bone lesions, or myopathy, all of which may occur as initial symptoms or develop during the course of the disease. Articular involvement my present as arthralgia or arthritis. Skeletal complications usually develop in the chronic state of the disease...
May 14, 2018: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/29748534/activated-dendritic-cells-modulate-proliferation-and-differentiation-of-human-myoblasts
#5
Leandro Ladislau, Débora M Portilho, Tristan Courau, Alhondra Solares-Pérez, Elisa Negroni, Jeanne Lainé, David Klatzmann, Adriana Bonomo, Yves Allenbach, Olivier Benveniste, Ingo Riederer, Wilson Savino, Vincent Mouly, Gillian Butler-Browne, Claudia F Benjamim
Idiopathic Inflammatory Myopathies (IIMs) are a heterogeneous group of autoimmune diseases affecting skeletal muscle tissue homeostasis. They are characterized by muscle weakness and inflammatory infiltration with tissue damage. Amongst the cells in the muscle inflammatory infiltration, dendritic cells (DCs) are potent antigen-presenting and key components in autoimmunity exhibiting an increased activation in inflamed tissues. Since, the IIMs are characterized by the focal necrosis/regeneration and muscle atrophy, we hypothesized that DCs may play a role in these processes...
May 10, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29748118/diaphragmatic-dysfunction-as-the-presenting-symptom-in-neuromuscular-disorders-a-retrospective-longitudinal-study-of-etiology-and-outcome-in-30-german-patients
#6
Matthias Türk, Irina Weber, Gernot Vogt-Ladner, Rolf Schröder, Martin Winterholler
Diaphragmatic dysfunction is well-known in advanced stages of neuromuscular disorders. However, data on its presence as the presenting symptom in neuromuscular disorders is scarce. The goal of this retrospective longitudinal study was to evaluate the etiology and clinical outcome in patients, in whom uni- or bilateral diaphragmatic dysfunction was primarily diagnosed, before a specific neuromuscular disease was found. Patients with critical illness neuropathy/myopathy were excluded from this study. Analysis of the medical records of two tertiary referral centers for patients with neuromuscular diseases identified 30 corresponding patients with diaphragmatic dysfunction (17 unilateral; 13 bilateral)...
April 9, 2018: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/29740336/mediators-and-patterns-of-muscle-loss-in-chronic-systemic-inflammation
#7
REVIEW
Sandra Pérez-Baos, Iván Prieto-Potin, Jorge A Román-Blas, Olga Sánchez-Pernaute, Raquel Largo, Gabriel Herrero-Beaumont
Besides its primary function in locomotion, skeletal muscle (SKM), which represents up to half of human's weight, also plays a fundamental homeostatic role. Through the secretion of soluble peptides, or myokines, SKM interacts with major organs involved in metabolic processes. In turn, metabolic cues from these organs are received by muscle cells, which adapt their response accordingly. This is done through an intricate intracellular signaling network characterized by the cross-talking between anabolic and catabolic pathways...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29739268/a-rare-cause-of-proximal-muscle-weakness-immune-necrotising-myopathy
#8
Deniz Can Guven, Abdulsamet Erden, Levent Kilic, Sevim Erdem Ozdamar, Omer Karadag
Background Immune-mediated necrotising myopathies are characterised clinically by the subacute onset of proximal limb weakness, accompanied by elevated creatinine kinase levels. They are distinguished from other myopathies by the absence of prominent infiltration of the muscle with inflammatory cells in the biopsies. Case presentation A 44-year-old man presented with upper extremity weakness and dysphagia. Laboratory tests included a creatinine kinase level of 4362 U/L (normal: 52-336 U/L). Rheumatological markers were all negative...
January 1, 2018: Scottish Medical Journal
https://www.readbyqxmd.com/read/29732042/inflammatory-myopathies-in-a-patient-with-darier-disease-a-possible-association
#9
Kaveh Gharaei Nejad, Hojat Eftekhari, Rana Rafiei, Abbas Darjani, Narges Alizadeh
Background: Darier disease (DD) is an autosomal dominant genetic disorder which develops from a mutation in the ATP2A2 gene. Inflammatory myopathies (IM) are the largest group of potentially treatable myopathies. In this case, we report development of IM in a patient with DD for the second time in the literature. Case presentation: The patient is a 59-year-old female, a known case of DD, who developed proximal muscle weakness 2 weeks prior to admission. Elevated muscle-enzymes, as well as typical electromyographic and radiologic confirmed the diagnosis of IM...
2018: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/29720800/necrotizing-autoimmune-myopathy-clinicopathologic-study-from-a-single-tertiary-care-centre
#10
Sobiya Mahnaz Ayesha, A K Meena, Navatha Vangala, Liza Rajasekhar, Subhash Kaul, Rupam Borgahain, Megha S Uppin
Background: Idiopathic inflammatory myopathies (IIMs) are a group of chronic, autoimmune disorders which include a new entity, necrotizing autoimmune myopathy (NAM). NAM lacks inflammation and presents with markedly elevated creatinine phosphokinase (CPK) levels. It is associated with connective tissue diseases (CTDs), statin use, malignancies, and most cases are idiopathic. Objectives: The objectives of this study are to describe the clinicopathologic features in muscle biopsy-proven cases of NAM...
January 2018: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/29718260/asymptomatic-hyperckemia-during-infliximab-therapy-in-patients-with-inflammatory-bowel-disease
#11
Eirini Theodoraki, Eleni Orfanoudaki, Kalliopi Foteinogiannopoulou, Ioannis E Koutroubakis
Background: Both muscle-related complaints and elevated serum creatine kinase (CK) levels have been reported in patients with inflammatory bowel disease (IBD) treated with infliximab (IFX), mainly as case reports. The aim of this study was to investigate the effect of IFX therapy on serum CK levels in a cohort of Greek IBD patients. Methods: Demographic, clinical (including muscle complaints), and laboratory data of consecutive IBD patients undergoing IFX treatment and a matched control group of IBD patients without any use of biological treatment were retrospectively analyzed...
April 30, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29716676/high-prevalence-of-metabolic-syndrome-in-antisynthetase-syndrome
#12
Paula A O Araujo, Marilda Guimarães Silva, Eduardo Ferreira Borba, Samuel K Shinjo
OBJECTIVES: A high frequency of metabolic syndrome (MetS) has been recently described in different idiopathic inflammatory myopathies, but not in antisynthetase syndrome (ASS). Therefore, the aim of the present study was to determine the prevalence of MetS in ASS and also its possible association with cardiovascular the risk factors and ASS-related disease characteristics. METHODS: A cross-sectional single centre study of 42 consecutive ASS patients was conducted from 2012 to 2015 and compared to 84 healthy individuals matched for gender, age, ethnicity and body mass index-matched (control group)...
March 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29713867/treatment-of-adult-idiopathic-inflammatory-myopathies-with-conventional-immunosuppressive-drugs-results-of-a-retrospective-study
#13
G Keyßer, S Zierz, M Kornhuber
OBJECTIVES: To gain information about the efficacy of immunosuppressive drugs as first-, second-, and third-line treatment of idiopathic inflammatory myopathies (IIM). METHODS: 112 treatment cycles of 63 patients with dermatomyositis (n = 23), polymyositis (n = 33), overlap syndromes (n = 4), and undifferentiated connective tissue diseases (n = 3) were analyzed by retrospective chart analysis. Data regarding muscle strength, muscle enzymes, treatment duration, and treatment discontinuation were collected...
April 30, 2018: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/29707197/case-report-acute-amyopathic-dermatomyositis-presenting-with-isolated-facial-edema
#14
Efthymia Pappa, Marina Gkeka, Asimina Protogerou, Leonidas Marinos, Chariclia Loupa, Constantinos Christopoulos
A 45-year-old Asian man presented with acute-onset periorbital and facial edema associated with pyrexia. Muscle weakness was absent. Initial laboratory investigations showed an inflammatory reaction, while screening for infections was negative. Serum muscle enzyme levels were normal. He was hospitalized and treated empirically with antibiotics and corticosteroids, pending the result of facial skin and muscle biopsy. He showed a good clinical and laboratory response but an attempt to discontinue corticosteroids led to a prompt relapse of facial edema and pyrexia, associated with rising laboratory indices of inflammation...
2018: F1000Research
https://www.readbyqxmd.com/read/29701378/amniotic-membrane-in-the-treatment-of-varicose-ulcers-a-center-experience
#15
J Rocha-Neves, André Ferreria, Joel Sousa, Marina Dias-Neto, Luis Gamas, Isabel Vilaça, José Teixeira
INTRODUCTION: Amniotic membrane (AM) is an option as a cover in varicose leg ulcers, promoting epithelization. Anti-inflammatory and analgesic proprieties are described, as well as high levels of growth factors and angiogenesis. The costs are inferior to surgical plasty. The aim of this work is to describe the results of AM in the treatment of varicous leg ulcers in a group of patients refractory to the best medical treatment. METHODS: A pilot prospective trial was conducted...
July 2017: Revista Portuguesa de Cirurgia Cardio-torácica e Vascular
https://www.readbyqxmd.com/read/29692254/musculoskeletal-manifestations-of-sarcoidosis-a-review-article
#16
Somayeh Shariatmaghani, Roshanak Salari, Maryam Sahebari, Payman Shalchiantabrizi, Masoumeh Salari
Sarcoidosis is a multisystem inflammatory disease with an etiology that is not clearly understood. Amongst the different organs that may be affected, the lungs are the most common. Musculoskeletal manifestations of the disease are uncommon. They include arthropathy, bone lesions, or myopathy, all of which may occur as initial symptoms or develop during the course of the disease. Articular involvement my present as arthralgia or arthritis. Skeletal complications usually develop in the chronic state of the disease...
April 24, 2018: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/29691272/immune-mediated-necrotising-myopathy-a-rare-cause-of-hyperckaemia
#17
Emily Liang, Mandana Rastegar
Immune-mediated necrotising myopathy (IMNM) is a type of inflammatory myopathy characterised by acute or subacute severe proximal muscle weakness, significantly elevated creatine kinase levels, and prominent myofibre necrosis and regeneration with little or no inflammation. A subtype of IMNM identified by anti-HMG-CoA reductase (HMGCR)antibodies has been shown to be associated with statin exposure. Treatment of IMNM consists of immunosuppression with steroids, steroid-sparing agents, intravenous immune globulin and/or biologics...
April 24, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29689030/checkpoint-inhibitor-immune-therapy-systemic-indications-and-ophthalmic-side-effects
#18
Lauren A Dalvin, Carol L Shields, Marlana Orloff, Takami Sato, Jerry A Shields
PURPOSE: To review immune checkpoint inhibitor indications and ophthalmic side effects. METHODS: A literature review was performed using a PubMed search for publications between 1990 and 2017. RESULTS: Immune checkpoint inhibitors are designed to treat system malignancies by targeting one of three ligands, leading to T-cell activation for attack against malignant cells. These ligands (and targeted drug) include cytotoxic T-lymphocyte antigen-4 (CTLA-4, ipilimumab), programmed death protein 1 (PD-1, pembrolizumab, nivolumab), and programmed death ligand-1 (PD-L1, atezolizumab, avelumab, durvalumab)...
April 23, 2018: Retina
https://www.readbyqxmd.com/read/29674613/risk-factors-and-disease-mechanisms-in-myositis
#19
REVIEW
Frederick W Miller, Janine A Lamb, Jens Schmidt, Kanneboyina Nagaraju
Autoimmune diseases develop as a result of chronic inflammation owing to interactions between genes and the environment. However, the mechanisms by which autoimmune diseases evolve remain poorly understood. Newly discovered risk factors and pathogenic processes in the various idiopathic inflammatory myopathy (IIM) phenotypes (known collectively as myositis) have illuminated innovative approaches for understanding these diseases. The HLA 8.1 ancestral haplotype is a key risk factor for major IIM phenotypes in some populations, and several genetic variants associated with other autoimmune diseases have been identified as IIM risk factors...
April 20, 2018: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/29674612/autoantibodies-in-myositis
#20
REVIEW
Neil J McHugh, Sarah L Tansley
The discovery of novel autoantigen systems related to idiopathic inflammatory myopathies (collectively referred to as myositis) in adults and children has had major implications for the diagnosis and management of this group of diseases across a wide range of medical specialties. Traditionally, autoantibodies found in patients with myositis are described as being myositis-specific autoantibodies (MSAs) or myositis-associated autoantibodies (MAAs), depending on their prevalence in other, related conditions. However, certain MSAs are more closely associated with extramuscular manifestations, such as skin and lung disease, than with myositis itself...
April 20, 2018: Nature Reviews. Rheumatology
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