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Inflammatory polymyositis

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https://www.readbyqxmd.com/read/28210638/an-unusual-suspect-causing-hypoxemic-respiratory-failure
#1
Masooma Aqeel, Bjorn Batdorf, Horatiu Olteanu, Jayshil J Patel
Introduction: Antisynthetase syndrome (ASS) is characterized by the presence of anti-Jo-1 antibodies in conjunction with clinical findings of fever, polymyositis-dermatomyositis, and interstitial lung disease (ILD). Inflammatory myopathies carry a high risk of malignancy, but this association is less well outlined in ASS. We present the case of a patient with ASS who developed non-Hodgkin's lymphoma with acute hypoxemic respiratory failure. Case Presentation: A 44-year-old female with ASS presented with acute hypoxemic respiratory failure...
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28194428/identification-of-palmitoleic-acid-controlled-by-mtor-signaling-as-a-biomarker-of-polymyositis
#2
Geng Yin, Ying Wang, Xiao-Min Cen, Yuan Yang, Min Yang, Qi-Bing Xie
Polymyositis (PM) is a chronic disease characterized by muscle pain, weakness, and increase in muscle-related enzymes, accompanied with inflammations in lymphocytes. However, it is not well understood how the molecular alternations in lymphocytes contribute to the development of polymyositis. The mechanistic target of rapamycin (mTOR) signaling is the central regulator of metabolism and inflammation in mammalian cells. Based on previous studies, we proposed that mTOR signaling may control inflammatory reactions via lipid metabolism...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28194064/therapeutic-plasma-exchange-in-patients-with-neurologic-disorders-review-of-63-cases
#3
Anil Tombak, Mehmet Ali Uçar, Aydan Akdeniz, Arda Yilmaz, Hakan Kaleagası, Mehmet Ali Sungur, Eyup Naci Tiftik
Therapeutic plasma exchange (TPE) is a procedure that reduces circulating autoantibodies of the patients. TPE is commonly used in neurological disorders where autoimmunity plays a major role. We report our experience with regard to the indications, adverse events and outcomes of plasma exchange in neurological disorders. Sixty-three patients were included to this retrospective study. Median age was 48 years (range 1-85), there was a predominance of males. Neurological indications included Guillain-Barrè syndrome (n = 22), myasthenia gravis (n = 21), chronic inflammatory demyelinating polyneuropathy (n = 7), polymyositis (n = 3), multifocal motor neuropathy (n = 2), acute disseminated encephalomyelitis (n = 2), neuromyelitis optica (n = 2), multiple sclerosis (n = 2), limbic encephalitis (n = 1) and transverse myelitis (n = 1)...
March 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28183315/pyruvate-kinase-m2-and-the-mitochondrial-atpase-inhibitory-factor-1-provide-novel-biomarkers-of-dermatomyositis-a-metabolic-link-to-oncogenesis
#4
Fulvio Santacatterina, María Sánchez-Aragó, Marc Catalán-García, Glòria Garrabou, Cristina Nuñez de Arenas, Josep M Grau, Francesc Cardellach, José M Cuezva
BACKGROUND: Metabolic alterations play a role in the development of inflammatory myopathies (IMs). Herein, we have investigated through a multiplex assay whether proteins of energy metabolism could provide biomarkers of IMs. METHODS: A cohort of thirty-two muscle biopsies and forty plasma samples comprising polymyositis (PM), dermatomyositis (DM) and sporadic inclusion body myositis (sIBM) and control donors was interrogated with monoclonal antibodies against proteins of energy metabolism using reverse phase protein microarrays (RPPA)...
February 10, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28103926/clinical-significance-of-soluble-cd163-in-polymyositis-related-or-dermatomyositis-related-interstitial-lung-disease
#5
Yasunori Enomoto, Yuzo Suzuki, Hironao Hozumi, Kazutaka Mori, Masato Kono, Masato Karayama, Kazuki Furuhashi, Tomoyuki Fujisawa, Noriyuki Enomoto, Yutaro Nakamura, Naoki Inui, Daisuke Suzuki, Noriyoshi Ogawa, Ran Nakashima, Tsuneyo Mimori, Toshihide Iwashita, Takafumi Suda
BACKGROUND: Macrophage activation is involved in the pathogenesis of polymyositis (PM)/dermatomyositis (DM). CD163, a scavenger receptor expressed on the surface of activated macrophages, mediates anti-inflammatory functions. This study aimed to evaluate the clinical significance of soluble CD163 (sCD163) in PM/DM-related interstitial lung disease (ILD). METHODS: The main subjects were 48 patients with PM/DM-related ILD. As controls, 10 patients with PM/DM without ILD and 20 healthy volunteers were enrolled...
January 19, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28076913/use-of-intravenous-immunoglobulin-therapy-for-myositis-an-audit-in-south-australian-patients
#6
Caroline Foreman, Paul Russo, Noelene Davies, Pravin Hissaria, Susanna Proudman, Tiffany Hughes, Vidya Limaye
In South Australia, between 2000 and 2014, 57 patients with idiopathic inflammatory myositis (IIM) were treated with intravenous immunoglobulin (IVIg). We reviewed disease characteristics to determine predictors of response to therapy and IVIg dosing and duration to identify opportunities to rationalise IVIg use. Patients with dermatomyositis/polymyositis had a response rate of 77% and were more likely than inclusion body myositis to respond to therapy. Consideration should be given to the use of the lowest possible dose of IVIg and to the undertaking of trials of cessation of IVIg in patients with stable IIM...
January 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28053302/polymyositis-without-beneficial-response-to-steroid-therapy-should-miyoshi-myopathy-be-a-differential-diagnosis
#7
Renata Siciliani Scalco, Paulo José Lorenzoni, David S Lynch, William Alves Martins, Heinz Jungbluth, Ros Quinlivan, Jefferson Becker, Henry Houlden
BACKGROUND Miyoshi myopathy (MM) is an autosomal-recessive muscle disorder caused by mutations in the DYSF gene. Clinical features and histopathological changes in dysferlinopathies may mimic inflammatory myopathies and a high degree of clinical suspicion is required to guide the genetic investigation. CASE REPORT We report the case of a 16-year-old male who presented with severe bilateral calf pain and elevated CK levels (15 000 IU/l) who was on prolonged steroid therapy prompted by the clinical suspicion of inflammatory myopathy...
January 5, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28039312/sarcoplasmic-mxa-expression-a-valuable-marker-of-dermatomyositis
#8
Akinori Uruha, Atsuko Nishikawa, Rie S Tsuburaya, Kohei Hamanaka, Masataka Kuwana, Yurika Watanabe, Shigeaki Suzuki, Norihiro Suzuki, Ichizo Nishino
OBJECTIVE: To evaluate the diagnostic value of myxovirus resistance A (MxA) expression in the cytoplasm of myofibers in the diagnosis of dermatomyositis (DM). METHODS: We assessed the sensitivity and specificity of the sarcoplasmic expression of MxA in muscles with DM by immunohistochemistry in consecutive cases of DM (n = 34) and other idiopathic inflammatory myopathies (n = 120: 8 with polymyositis, 16 with anti-tRNA-synthetase antibody-associated myositis, 46 with immune-mediated necrotizing myopathy, and 50 with inclusion body myositis) and compared them with conventional pathologic hallmarks of DM, including perifascicular atrophy (PFA) and membrane attack complex (MAC) deposition on endomysial capillaries...
December 30, 2016: Neurology
https://www.readbyqxmd.com/read/28035084/sphingosine-1-phosphate-receptor-modulators-and-drug-discovery
#9
REVIEW
Soo-Jin Park, Dong-Soon Im
Initial discovery on sphingosine 1-phosphate (S1P) as an intracellular second messenger was faced unexpectedly with roles of S1P as a first messenger, which subsequently resulted in cloning of its G protein-coupled receptors, S1P₁₋₅. The molecular identification of S1P receptors opened up a new avenue for pathophysiological research on this lipid mediator. Cellular and molecular in vitro studies and in vivo studies on gene deficient mice have elucidated cellular signaling pathways and the pathophysiological meanings of S1P receptors...
January 1, 2017: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/28012697/the-host-defense-peptide-ll-37-a-possible-inducer-of-the-type-i-interferon-system-in-patients-with-polymyositis-and-dermatomyositis
#10
Xin Lu, Quan Tang, Monica Lindh, Maryam Dastmalchi, Helene Alexanderson, Karin Popovic Silwerfeldt, Birgitta Agerberth, Ingrid E Lundberg, Cecilia Wick
The type I interferon (IFN) system has recently been suggested to play important and essential roles in the pathogenesis of myositis. However, a clarification of how type I IFNs could function as triggering factor(s) in the pathogenesis of myositis has yet failed. Through activation of the type I IFN system, the host defense peptide LL-37 carries numerous immunomodulatory properties and is implicated in the pathogenesis of several other autoimmune diseases, including systemic lupus erythematosus (SLE). The expression of LL-37 can be regulated by various endogenous factors including the active form of vitamin D (25(OH)D3)...
December 22, 2016: Journal of Autoimmunity
https://www.readbyqxmd.com/read/27959849/-relapses-in-inflammatory-myopathies
#11
Blas J Larrauri, Diego S Fernández Romero, Maria Cecilia Juri, Alejandro Malbrán
Most studies about treatment of inflammatory myopathies consist of cross-sectional analyses that do not assess long-term efficacy. In the present study we describe the follow-up of seven patients with inflammatory myopathies, 5 polymyositis and 2 dermatomyositis. We describe their clinical features, follow-up, muscle enzyme levels, and treatment responses. We define the latter as treatment cycles, every one of which end when steroid doses need to be increased or a new immunosuppressive drug has to be added because of clinical worsening or sustained increases in muscle enzyme levels...
2016: Medicina
https://www.readbyqxmd.com/read/27955822/febuxostat-associated-eosinophilic-polymyositis-in-marginal-zone-lymphoma
#12
Georges Chahine, Khalil Saleh, Claude Ghorra, Nathalie Khoury, Nadine Khalife, Fouad Fayad
Febuxostat is an orally administered selective inhibitor of xanthine oxidase approved for the treatment of gout and prevention of tumor lysis syndrome. It is a relatively safe medication. Hypersensitivity reactions associated with the use of febuxostat are quite rare with only one reported case of DRESS syndrome. Recently, two case reports of rhabdomyolysis following the initiation of febuxostat were published. We hereby present the first case of rhabdomyolysis with hypereosinophilia following the administration of febuxostat to a 50-year-old patient newly diagnosed with marginal zone lymphoma...
December 7, 2016: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/27935079/high-resolution-manometry-in-patients-with-idiopathic-inflammatory-myopathy-elevated-prevalence-of-esophageal-involvement-and-differences-according-to-autoantibody-status-and-clinical-subset
#13
Maria Casal-Dominguez, Iago Pinal-Fernandez, Marianela Mego, Anna Accarino, Lluis Jubany, Fernando Azpiroz, Albert Selva-O'Callaghan
INTRODUCTION: We studied the high-resolution manometry (HRM) findings in patients with dermatomyositis and polymyositis. METHODS: From 2008 to 2015, we performed a cross-sectional study of myositis patients. A survey of esophageal symptoms and a HRM were analyzed and compared among different clinical and serologic groups. RESULTS: Twenty-four (45%) of the 53 patients that were included in the study had manometric involvement that was not correlated with any esophageal symptom (P =0...
December 9, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27916754/-autoantibodies-of-inflammatory-myopathies-update
#14
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
#15
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/27908534/critical-review-of-the-role-of-intravenous-immunoglobulins-in-idiopathic-inflammatory-myopathies
#16
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/27903248/long-term-clinical-course-of-anti-glycyl-trna-synthetase-anti-ej-antibody-related-interstitial-lung-disease-pathologically-proven-by-surgical-lung-biopsy
#17
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/27889748/mir-146a-regulates-inflammatory-infiltration-by-macrophages-in-polymyositis-dermatomyositis-by-targeting-traf6-and-affecting-il-17-icam-1-pathway
#18
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...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27865559/analysis-of-sexual-function-of-patients-with-dermatomyositis-and-polymyositis-through-self-administered-questionnaires-a-cross-sectional-study
#19
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
#20
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)
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