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https://www.readbyqxmd.com/read/29766941/idiopathic-inflammatory-myopathies-in-adults-a-comparative-study-of-bohan-and-peter-and-european-neuromuscular-center-2004-criteria
#1
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/29748534/activated-dendritic-cells-modulate-proliferation-and-differentiation-of-human-myoblasts
#2
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/29720800/necrotizing-autoimmune-myopathy-clinicopathologic-study-from-a-single-tertiary-care-centre
#3
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/29713867/treatment-of-adult-idiopathic-inflammatory-myopathies-with-conventional-immunosuppressive-drugs-results-of-a-retrospective-study
#4
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/29674613/risk-factors-and-disease-mechanisms-in-myositis
#5
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/29674099/anti-fouling-and-thermosensitive-ion-imprinted-nanocomposite-membranes-based-on-grapheme-oxide-and-silicon-dioxide-for-selectively-separating-europium-ions
#6
Jian Lu, Yilin Wu, Xinyu Lin, Jia Gao, Hongjun Dong, Li Chen, Yingying Qin, Liang Wang, Yongsheng Yan
The increasing amount of europium in aqueous environment from rare earth industry has become a serious environmental challenge. Significant efforts have been focused on ion-imprinting membranes (IIMs) for selective separation of ions from analogues. Based on ion-imprinting technique, we have developed Eu3+ -imprinted nanocomposite membranes (Eu-IIMs) for selectively separating Eu3+ from La3+ , Gd3+ and Sm3+ . Polydopamine (pDA) was previously synthesized on basal membranes to augment the interfacial adhesion...
April 12, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29669460/current-diagnosis-and-treatment-of-polymyositis-and-dermatomyositis
#7
Hirokazu Sasaki, Hitoshi Kohsaka
Idiopathic inflammatory myopathies (IIMs) are heterogeneous disorders that affect the skeletal muscles. Polymyositis, dermatomyositis, and inclusion body myositis are major IIM subsets. Immune-mediated necrotizing myopathy became recognized as a potentially new IIM subset. Since the new classification criteria published by the International Myositis Classification Criteria Project have higher sensitivity and specificity for IIM classification and subclassification than the previous criteria, they should help precise diagnosis...
April 18, 2018: Modern Rheumatology
https://www.readbyqxmd.com/read/29651121/classification-of-myositis
#8
REVIEW
Ingrid E Lundberg, Marianne de Visser, Victoria P Werth
The idiopathic inflammatory myopathies (IIMs; also known as myositis) are a heterogeneous group of disorders in which a common feature is chronic inflammation of skeletal muscle, leading to muscle weakness. Other organs are frequently affected in IIMs, such as the skin, joints, lungs, gastrointestinal tract and heart, contributing to morbidity and mortality. Currently, IIMs are most often subclassified into polymyositis, dermatomyositis and inclusion body myositis, but this subclassification has limitations as these subgroups often have overlapping clinical and histopathological features, and outcomes vary within the subgroups; additionally, subgroups without considerable myopathy are not included...
April 12, 2018: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/29651119/update-on-outcome-assessment-in-myositis
#9
REVIEW
Lisa G Rider, Rohit Aggarwal, Pedro M Machado, Jean-Yves Hogrel, Ann M Reed, Lisa Christopher-Stine, Nicolino Ruperto
The adult and juvenile myositis syndromes, commonly referred to collectively as idiopathic inflammatory myopathies (IIMs), are systemic autoimmune diseases with the hallmarks of muscle weakness and inflammation. Validated, well-standardized measures to assess disease activity, known as core set measures, were developed by international networks of myositis researchers for use in clinical trials. Composite response criteria using weighted changes in the core set measures of disease activity were developed and validated for adult and juvenile patients with dermatomyositis and adult patients with polymyositis, with different thresholds for minimal, moderate and major improvement in adults and juveniles...
April 12, 2018: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/29649184/immunopathological-characterization-of-muscle-biopsy-samples-from-immune-mediated-necrotizing-myopathy-patients
#10
Qiong Wang, Yue Li, Suqiong Ji, Fang Feng, Bitao Bu
BACKGROUND Immune-mediated necrotizing myopathy (IMNM) is a relatively new proposed category of idiopathic inflammatory myopathies (IIMs), characterized by the presence of abundant necrotic muscle fibers, myophagocytosis, and sparse inflammatory infiltrates. The aim of our study was to analyze the immunopathological characteristics of IMNM by detecting biopsy samples from a cohort of patients, and to delineate the pathways involved in the pathogenesis. MATERIAL AND METHODS A retrospective evaluation of muscle biopsy samples, clinical and laboratory data, and immunohistochemical analysis of macrophages MHC-I and MAC, was performed for all patients diagnosed as having IMNM but without a prior exposure to statins...
April 12, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29623846/immune-mediated-necrotizing-myopathy-where-do-we-stand
#11
Abdel Gaffar A Mohammed, Ayanda Gcelu, Farzana Moosajee, Stella Botha, Ali Asgar Kalla
Immune-mediated necrotizing myopathies (IMNMs) are a group of acquired autoimmune muscle disorders that have been recently defined. They are characterized by proximal muscle weakness, high levels of creatinine kinase, and myopathic findings on electromyogram (EMG). Muscle biopsy in IMNM differentiates it from the other subgroups of idiopathic inflammatory myositis (IIM) by the presence of myofibre necrosis and prominent regeneration without substantial lymphocytic inflammatory infiltrates. Anti-signal recognition particle (SRP) and anti-3hydroxy-3 methylglutaryl-coenzyme A reductase (HMGCR) autoantibodies were found in two thirds of IMNM patients...
April 5, 2018: Current Rheumatology Reviews
https://www.readbyqxmd.com/read/29593343/treatment-in-myositis
#12
REVIEW
Chester V Oddis, Rohit Aggarwal
As with the treatment of many immune-mediated diseases, managing myositis encompasses diverse factors, which present a challenge to the physician caring for these patients. The idiopathic inflammatory myopathies (IIMs, also known as myositis), are fundamentally heterogeneous; many contributory immunological perturbations are involved in the pathogenesis of myositis, leading to varying clinical phenotypic presentations. Targeting any one or several of these deleterious pathways with a therapeutic agent might seem reasonable, but the desired response is not uniformly predictable...
March 29, 2018: Nature Reviews. Rheumatology
https://www.readbyqxmd.com/read/29579357/venous-thromboembolic-events-in-idiopathic-inflammatory-myopathy-occurrence-and-relation-to-disease-onset
#13
Aleksandra Antovic, Antonella Notarnicola, John Svensson, Ingrid E Lundberg, Marie Holmqvist
OBJECTIVES: To assess the incidence of venous thromboembolism (VTE) in patients with idiopathic inflammatory myopathies (IIM), and compare the incidence in IIM to the incidence in the general population. To identify patient categories at high risk and investigate the development of risk in relation to IIM diagnosis. METHODS: Using nationwide registers we identified a cohort of 440 individuals with newly diagnosed IIM and 4459 individuals from the general population...
March 26, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29569859/toll-like-receptor-7-8-activation-exacerbates-murine-experimental-autoimmune-myositis
#14
Clara Sciorati, Antonella Monno, Maria Giulia Doglio, Elena Rigamonti, Dana P Ascherman, Angelo A Manfredi, Patrizia Rovere-Querini
OBJECTIVE: TLR-7/8 and Interferon (IFN)-induced genes are expressed in patients with inflammatory idiopathic myositis. Here we investigated whether their activation influences the natural history of the disease. METHODS: Experimental autoimmune myositis (EAM) was induced by injection of the amino-terminal portion of the murine Histydil t-RNA synthetase (HisRS). Disease was compared in the presence or the absence of the TLR-7/8 agonist R848 in wild-type mice and in mice that fail to express the IFNαβ receptor (IFNαβR null)...
March 23, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29563381/diagnostic-approach-to-cardiac-involvement-in-idiopathic-inflammatory-myopathies
#15
Fei Chen, Yong Peng, Mao Chen
Cardiac involvement in idiopathic inflammatory myopathies (IIMs) attracts more attention than it ever did because of its morbidity and impact on worse prognosis, although the accurate information needs further epidemiological studies. Early identification and intervention for the diseased heart may help improve the clinical outcomes of IIMs with cardiac involvement. Cardiac troponin assays, allowing for sensitive detection of minor myocardium injury, may provide a new way for early detection for heart involvement in IIMs...
March 20, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29550929/new-myositis-classification-criteria-what-we-have-learned-since-bohan-and-peter
#16
REVIEW
Valérie Leclair, Ingrid E Lundberg
PURPOSE OF REVIEW: Idiopathic inflammatory myopathy (IIM) classification criteria have been a subject of debate for many decades. Despite several limitations, the Bohan and Peter criteria are still widely used. The aim of this review is to discuss the evolution of IIM classification criteria. RECENT FINDINGS: New IIM classification criteria are periodically proposed. The discovery of myositis-specific and myositis-associated autoantibodies led to the development of clinico-serological criteria, while in-depth description of IIM morphological features improved histopathology-based criteria...
March 17, 2018: Current Rheumatology Reports
https://www.readbyqxmd.com/read/29541951/the-prevalence-and-clinical-significance-of-anti-puf60-antibodies-in-patients-with-idiopathic-inflammatory-myopathy
#17
Ya-Mei Zhang, Han-Bo Yang, Jing-Li Shi, He Chen, Xiao-Ming Shu, Xin Lu, Guo-Chun Wang, Qing-Lin Peng
Autoantibodies against poly-U-binding factor 60 kDa protein (PUF60) have been reported in Caucasian dermatomyositis (DM) patients. However, their clinical significance in idiopathic inflammatory myopathy (IIM) remains to be fully clarified. Our objective was to analyze the prevalence and clinical significance of anti-PUF60 antibodies in a large cohort of Chinese IIM patients. In our study, 388 IIM patients, 301 disease controls, and 167 healthy controls (HCs) were involved. An enzyme-linked immunosorbent assay (ELISA) was developed to detect serum anti-PUF60 levels and was validated using immunoblotting methods...
March 15, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29538753/using-serum-troponins-to-screen-for-cardiac-involvement-and-assess-disease-activity-in-the-idiopathic-inflammatory-myopathies
#18
James B Lilleker, Axel C P Diederichsen, Søren Jacobsen, Mark Guy, Mark E Roberts, Jamie C Sergeant, Robert G Cooper, Louise P Diederichsen, Hector Chinoy
Objectives: Limitations in the methods available for identifying cardiac involvement and accurately quantifying disease activity in the idiopathic inflammatory myopathies (IIMs) may contribute to poor outcomes. We investigated the utility of different serum muscle damage markers [total creatine kinase (CK), cardiac troponin T (cTnT) and cardiac troponin I (cTnI)] to address these issues. Methods: We assessed disease activity and cardiac involvement using the International Myositis Assessment and Clinical Studies Group core set measures in 123 participants with confirmed adult-onset IIM from the UK and Denmark...
March 12, 2018: Rheumatology
https://www.readbyqxmd.com/read/29534337/differential-clinical-associations-of-anti-nuclear-matrix-protein-2-autoantibodies-in-patients-with-idiopathic-inflammatory-myopathies
#19
Hanbo Yang, Xin Lu, Qinglin Peng, Wei Jiang, Jingli Shi, Yamei Zhang, He Chen, Guochun Wang
OBJECTIVE: To investigate the associations between anti-NXP-2 autoantibody levels and disease activity as well as calcinosis severity. METHODS: The serum levels of anti-NXP-2 autoantibodies were determined in 709 idiopathic inflammatory myopathies (IIMs) and also serially measured by an in-house enzyme-linked immunosorbent assay using recombinant MORC3. Patients with anti-NXP-2 autoantibodies were divided into two subgroups: with or without calcinosis. The associations of anti-NXP-2 autoantibody levels with organ-specific disease activity, serum creatine kinase (CK) levels, and calcinosis severity were investigated in cross-sectional and longitudinal analyses...
March 13, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29522204/revisiting-pathological-classification-criteria-for-adult-idiopathic-inflammatory-myopathies-in-depth-analysis-of-muscle-biopsies-and-correlation-between-pathological-diagnosis-and-clinical-manifestations
#20
Ying Hou, Yue-Bei Luo, Tingjun Dai, Kai Shao, Wei Li, Yuying Zhao, Jian-Qiang Lu, Chuanzhu Yan
The European Neuromuscular Centre (ENMC) pathological classification criteria of idiopathic inflammatory myopathies (IIMs) are debatable. The aim of this study was to explore their practicability and reproducibility. We conducted a retrospective analysis of 57 cases of IIMs excluding dermatomyositis (DM) and sporadic inclusion body myositis (sIBM) by in-depth analysis of muscle biopsies and comparisons of the clinical characteristics among polymyositis (PM), non-specific myositis (NSM) and necrotizing autoimmune myopathy (NAM)...
May 1, 2018: Journal of Neuropathology and Experimental Neurology
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