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https://www.readbyqxmd.com/read/27922497/autoimmune-myopathies
#1
Andrew L Mammen
PURPOSE OF REVIEW: This article provides guidelines for diagnosing and treating the different subtypes of autoimmune myopathies. RECENT FINDINGS: The most common subtypes of autoimmune myopathies are dermatomyositis, immune-mediated necrotizing myopathy, antisynthetase syndrome, and overlap syndromes; isolated polymyositis is an exceptionally rare disease. Specific autoantibodies are associated with unique clinical phenotypes and may be used for diagnostic and prognostic purposes, such as to assess the risk of coexisting malignancy...
December 2016: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/27916754/-autoantibodies-of-inflammatory-myopathies-update
#2
Shigeaki Suzuki
Inflammatory myopathies are a heterogeneous group of immune-mediated diseases that involve the skeletal muscle as well as many other organs. In addition to a histological diagnosis at muscle biopsy, the clinical phenotypes of inflammatory myopathies can be defined by the presence of various autoantibodies that are originally detected by RNA or protein immunoprecipitation. However, the correlation between histological features and autoantibodies has not been fully elucidated. Immune-mediated necrotizing myopathy (IMNM), which is characterized by significant necrotic and regeneration muscle fibers with minimal or no inflammatory cell infiltration, is associated with the presence of autoantibodies...
December 2016: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/27916753/-diagnosis-of-idiopathic-inflammatory-myopathy-a-muscle-pathology-perspective
#3
Michio Inoue, Ichizo Nishino
Idiopathic inflammatory myopathies are historically classified into polymyositis and dermatomyositis based on the presence or absence of skin lesions. Recently, however, a more histology-oriented classification into 6 subtypes has been proposed. The subtypes include dermatomyositis, polymyositis, inclusion body myositis, immune-mediated necrotizing myopathy, anti-synthetase syndrome, and non-specific myositis. With strict criteria applied, polymyositis is now extremely rare, while immune-mediated necrotizing myopathy is the most common among all inflammatory myopathies and is often associated with autoantibodies including those for signal recognition particle (SRP) or 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR)...
December 2016: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/27908613/sparc-interacts-with-actin-in-skeletal-muscle-in%C3%A2-vitro-and-in%C3%A2-vivo
#4
Louise H Jørgensen, Pia Lørup Jepsen, Anders Boysen, Line B Dalgaard, Lars G Hvid, Niels Ørtenblad, Dea Ravn, Jeeva Sellathurai, Jakob Møller-Jensen, Hanns Lochmüller, Henrik D Schrøder
The cytoskeleton is an integral part of skeletal muscle structure, and reorganization of the cytoskeleton occurs during various modes of remodeling. We previously found that the extracellular matrix protein secreted protein acidic and rich in cysteine (SPARC) is up-regulated and expressed intracellularly in developing muscle, during regeneration and in myopathies, which together suggests that SPARC might serve a specific role within muscle cells. Using co-immunoprecipitation combined with mass spectrometry and verified by staining for direct protein-protein interaction, we find that SPARC binds to actin...
November 28, 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27908534/critical-review-of-the-role-of-intravenous-immunoglobulins-in-idiopathic-inflammatory-myopathies
#5
REVIEW
Sabrina Anh-Tu Hoa, Marie Hudson
OBJECTIVE: The aim of this review was to summarize key findings from the literature concerning the therapeutic role of intravenous immunoglobulins (IVIg) in idiopathic inflammatory myopathies (IIM), dissecting the evidence according to disease subtype and treatment indication, and to review the evidence relating to the mechanism of action of IVIg in IIM to ascertain rationale for continued research. METHODS: Medline (Ovid) and Pubmed databases were searched from inception to July 2016 using relevant keywords...
July 29, 2016: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/27908312/calcinosis-in-poly-dermatomyositis-clinical-and-laboratory-predictors-and-treatment-options
#6
Micaela Fredi, Francesca Bartoli, Ilaria Cavazzana, Angela Cerebelli, Nice Carabellese, Angela Tincani, Minoru Satoh, Franco Franceschini
OBJECTIVES: We aimed to identify the possible clinical and laboratory predictors of calcinosis in a cohort of patients with a diagnosis of polymyositis (PM) and dermatomyositis (DM). METHODS: We carried out a retrospective analysis of a cohort of myositis patients attending our clinic between January 2013 and May 2014. RESULTS: 74 patients (58 females, 16 males) with PM (30 cases), DM (30 cases), overlap syndrome (13 cases) and inclusion body myositis (1 case) were enrolled...
November 14, 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27903248/long-term-clinical-course-of-anti-glycyl-trna-synthetase-anti-ej-antibody-related-interstitial-lung-disease-pathologically-proven-by-surgical-lung-biopsy
#7
Hajime Sasano, Eri Hagiwara, Hideya Kitamura, Yasunori Enomoto, Norikazu Matsuo, Tomohisa Baba, Shinichiro Iso, Koji Okudela, Tae Iwasawa, Shinji Sato, Yasuo Suzuki, Tamiko Takemura, Takashi Ogura
BACKGROUND: Anti-glycyl-tRNA synthetase (anti-EJ) antibody is occasionally positive in patients with interstitial lung disease (ILD). We aimed to define the clinical, radiological and pathological features of patients with anti-EJ antibody-positive ILD (EJ-ILD). METHODS: We retrospectively analyzed the medical records of 12 consecutive patients with EJ-ILD who underwent surgical lung biopsy. RESULTS: The median follow-up time was 74 months (range, 17-115 months)...
December 1, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27890706/the-sphingosine-1-phosphate-receptor-a-novel-therapeutic-target-for-multiple-sclerosis-and-other-autoimmune-diseases
#8
REVIEW
Yang Mao-Draayer, Jeffrey Sarazin, David Fox, Elena Schiopu
Multiple sclerosis (MS) is a prototype autoimmune disease of the central nervous system (CNS). Currently, there is no drug that provides a cure for MS. To date, all immunotherapeutic drugs target relapsing remitting MS (RR-MS); it remains a daunting medical challenge in MS to develop therapy for secondary progressive MS (SP-MS). Since the approval of the non-selective sphingosine-1-phosphate (S1P) receptor modulator FTY720 (fingolimod [Gilenya®]) for RR-MS in 2010, there have been many emerging studies with various selective S1P receptor modulators in other autoimmune conditions...
November 23, 2016: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/27889748/mir-146a-regulates-inflammatory-infiltration-by-macrophages-in-polymyositis-dermatomyositis-by-targeting-traf6-and-affecting-il-17-icam-1-pathway
#9
Yuanqin Yin, Fei Li, Jing Shi, Songlin Li, Jingjing Cai, Youhong Jiang
BACKGROUND/AIMS: The primary objective of this study was to investigate the role of miR-146a in inducing the inflammatory infiltration of macrophages in polymyositis/dermatomyositis (PM/DM) through targeting TNF receptor associated factor 6 (TRAF6), which may further down-regulate the Interleukin-17 (IL-17)/Intercellular Adhesion Molecule 1 (ICAM-1) pathway. METHODS: Biopsies were collected from PM/DM patients and healthy volunteers. PM/DM model establishment and macrophage isolation were performed on Sprague Dawley (SD) rats...
November 25, 2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27888997/comprehensive-assessment-of-myositis-specific-autoantibodies-in-polymyositis-dermatomyositis-associated-interstitial-lung-disease
#10
Hironao Hozumi, Tomoyuki Fujisawa, Ran Nakashima, Takeshi Johkoh, Hiromitsu Sumikawa, Akihiro Murakami, Noriyuki Enomoto, Naoki Inui, Yutaro Nakamura, Yuji Hosono, Yoshitaka Imura, Tsuneyo Mimori, Takafumi Suda
OBJECTIVES: Myositis-specific autoantibodies (MSAs) are associated with clinical phenotypes in polymyositis/dermatomyositis (PM/DM). No study has investigated the clinical features based on comprehensive MSA assessment in PM/DM-associated interstitial lung disease (ILD). We aimed to determine the practical significance of MSAs in PM/DM-ILD. METHODS: Sixty consecutive PM/DM-ILD patients were retrospectively analysed. Serum MSAs were comprehensively measured using immunoprecipitation assay...
December 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27870974/myocardial-perfusion-in-peripheral-raynaud-s-phenomenon-evaluation-using-stress-cardiovascular-magnetic-resonance
#11
Sophie Mavrogeni, Konstantinos Bratis, Loukia Koutsogeorgopoulou, Georgia Karabela, Efthymios Savropoulos, Gikas Katsifis, John Raftakis, George Markousis-Mavrogenis, Genovefa Kolovou
BACKGROUND: Peripheral Raynaud's phenomenon (RP) is either primary (PRP), without any coexisting disease or secondary (SRP), due to connective tissue diseases (CTD). We hypothesized that adenosine stress cardiovascular magnetic resonance (CMR) can assess myocardial perfusion in a population of PRP and SRP. PATIENTS-METHODS: Twenty CTDs, aged 30.6±7.5yrs., 16F/4M, including 9 systemic sclerosis (SSc), 4 systemic lupus erythematosus (SLE), 3 mixed connective tissue disease (MCTD), 2 polymyositis (PM) and 2 rheumatoid arthritis (RA), with SRP, under treatment with calcium blockers, were evaluated by stress CMR and compared with age-sex matched PRP and controls...
November 12, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27865559/analysis-of-sexual-function-of-patients-with-dermatomyositis-and-polymyositis-through-self-administered-questionnaires-a-cross-sectional-study
#12
Fernando Henrique Carlos de Souza, Daniel Brito de Araújo, Clovis Artur Silva, Renata Miossi, Carmita Helena Najjar Abdo, Eloisa Bonfá, Samuel Katsuyuki Shinjo
INTRODUCTION: To date, there are no descriptions in the literature on gynecologic and sexual function evaluation in female patients with dermatomyositis (DM) and polymyositis (PM). OBJECTIVE: To assess sexual function in female patients with DM/PM. PATIENTS AND METHODS: This is a monocentric, cross-sectional study in which 23 patients (16 DM and 7 PM), with ages between 18 and 40 years, were compared to 23 healthy women of the same age group...
November 1, 2016: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/27858897/anti-hmgcr-antibodies-in-systemic-sclerosis
#13
Marie Hudson, Yael Luck, Mathew Stephenson, May Y Choi, Mianbo Wang, Murray Baron, Marvin J Fritzler
The objective of this study was to investigate the frequency of autoantibodies to hydroxymethylglutaryl coenzyme A reductase (HMGCR) in systemic sclerosis (SSc) and associations with inflammatory myositis and statin exposure.This was a cross-sectional, multicenter study of 306 subjects from the Canadian Scleroderma Research Group cohort who had complete data on statin exposure and serology for anti-HMGCR antibodies assayed by an addressable laser bead immunoassay (ALBIA). Descriptive statistics were used to summarize the baseline characteristics of the patients and to compare subjects with and without anti-HMGCR antibodies...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27858337/development-and-evaluation-of-a-standardized-elisa-for-the-determination-of-autoantibodies-against-cn-1a-mup44-nt5c1a-in-sporadic-inclusion-body-myositis
#14
Sabine L Kramp, Dmitry Karayev, Guo Shen, Allan L Metzger, Robert I Morris, Eugene Karayev, Yvonne Lam, Richard M Kazdan, Ger J M Pruijn, Sandra Saschenbrecker, Cornelia Dähnrich, Wolfgang Schlumberger
PURPOSE: Sporadic inclusion body myositis (sIBM) is an autoimmune degenerative disease of the muscle, with inflammatory infiltrates and inclusion vacuoles. Its pathogenesis is not fully understood and the diagnosis is hampered by its imprecise characteristics, at times indistinguishable from other idiopathic inflammatory myopathies such as polymyositis and dermatomyositis. The diagnosis may be assisted by the detection of autoantibodies targeting Mup44, a skeletal muscle antigen identified as cytosolic 5'-nucleotidase 1A (cN-1A, NT5C1A)...
December 2016: Auto- Immunity Highlights
https://www.readbyqxmd.com/read/27856478/prognostic-factors-of-idiopathic-inflammatory-myopathies-complicated-with-interstitial-lung-disease-protocol-for-a-systematic-review-and-meta-analysis
#15
Hiroyuki Kamiya, Ogee Mer Panlaqui, Shinyu Izumi, Takashi Sozu
INTRODUCTION: Idiopathic inflammatory myopathies may be an overlapping disease complex. Although interstitial lung disease affects the mortality and the morbidity of the disease, a clinical course and the prognosis of the disease complicated with interstitial lung disease are diverse among individuals and prognostic factors have yet to be clarified. This article aims to report the rationale and the methodology of a future intended systematic review and meta-analysis of prognostic factors of idiopathic inflammatory myopathies complicated with interstitial lung disease...
November 17, 2016: BMJ Open
https://www.readbyqxmd.com/read/27826170/rheumatic-diseases-induced-by-drugs-and-environmental-factors-the-state-of-the-art-part-two
#16
REVIEW
Karolina Niklas, Arkadiusz A Niklas, Dominik Majewski, Mariusz J Puszczewicz
The majority of rheumatic diseases belong to the group of autoimmune diseases and are associated with autoantibody production. Their etiology is not fully understood. Certain medications and environmental factors may have an influence on the occurrence of rheumatic diseases. Establishing a cause-effect relationship between a certain factor and disease induction is not always simple. It is important to administer the drug continuously or monitor exposure to a given factor in the period preceding the onset of symptoms...
2016: Reumatologia
https://www.readbyqxmd.com/read/27824785/commentary-on-3-unusual-cases-involving-electroconvulsive-therapy
#17
David A Kahn
Well-established practice guidelines and a solid body of evidence underpin the safe and effective use of electroconvulsive therapy (ECT), primarily in mood disorders. In this issue of the journal, 3 case reports deal with situations that fall outside of the usual guidelines: treatment resistance to ECT overcome by combined use with antidepressant medication; use of ECT in the presence of polymyositis; and use of ECT for an unusually severe case of neuroleptic malignant syndrome, assisted by consultation from an online expert resource...
November 2016: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/27824783/cpk-measurements-and-ect-in-polymyositis-a-case-report
#18
Benjamin Delucia, Rachit Patel, Adeeb Yacoub, Andrew Francis
Inflammatory myopathies, including polymyositis (PM), may add risk to electroconvulsive therapy (ECT) due to muscle sensitivity to depolarizing neuromuscular agents. In addition, previously published case series have shown elevations in creatine phosphokinase (CPK), an index of PM disease severity, in patients without muscle disease receiving ECT. We report the case of a 74-year-old female who developed initial onset of depression after steroid treatment for biopsy-proven PM. After she failed to respond to trials of antidepressant medications, she was treated with 21 inpatient and outpatient sessions of ECT over 2 years...
November 2016: Journal of Psychiatric Practice
https://www.readbyqxmd.com/read/27808029/-paraneoplastic-myasthenia-gravis-and-polymyositis-secondary-to-a-thymoma-in-a-young-woman
#19
Shabnam Ezzatian-Ahar, Emil Greve Pedersen, Henrik Daa Schrøder, Hans Christian Horn, David Gaist
We present the case of a 33-year-old woman who within weeks developed severe swallowing difficulties and weakness in her limbs to an extent requiring hospitalization. Workup confirmed clinically suspected diagnoses of polymyositis and autoimmune myasthenia. A suspicion of malignant thymoma based on chest computed tomography was histologically verified. Patient treatment and response are presented. The case emphasizes the importance of recognizing that thymomas, in rare instances, may present with a combination of neuromuscular disorders in the same patient...
October 24, 2016: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/27803421/tuberculous-fasciitis-in-polymyositis-a-rare-case-of-extrapulmonary-tuberculosis
#20
Ikue Nagayama, Katsuyuki Nagatoya, Yu Kurahara, Akira Mega, Masashi Morita, Ryota Haga, Yu Yamanouchi, Yoshito Yamaguchi, Tatsufumi Oka, Atsushi Yamauchi
A 71-year-old woman with polymyositis presenting with left thigh pain and an intermittent fever was admitted to Osaka Rosai Hospital. We initially diagnosed that her pain and fever were caused by a soft tissue infection because her polymyositis was controlled. She did not respond to various antibiotic therapies. Chest computed tomography demonstrated miliary tuberculosis (TB). Ziehl-Neelsen staining of liver biopsy specimens revealed epithelioid cell granuloma and acid-fast bacilli. Therefore, we finally diagnosed the lesion as TB fasciitis that improved with anti-TB drug therapy...
2016: Internal Medicine
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