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https://www.readbyqxmd.com/read/29780824/clinical-histological-and-immunohistochemical-findings-in-inclusion-body-myositis
#1
Leonardo Valente de Camargo, Mary Souza de Carvalho, Samuel Katsuyuki Shinjo, Acary Souza Bulle de Oliveira, Edmar Zanoteli
Sporadic inclusion body myositis (sIBM) is considered the most common acquired myopathy aged over 50 years. The disease is characterized by a particular process of muscle degeneration characterized by abnormal deposit of protein aggregates in association with inflammation. The aim of this study was to present clinical and muscle histopathological findings, including immunostaining for LC3B, p62, α -synuclein, and TDP-43, in 18 patients with sIBM. The disease predominated in males (61%) and European descendants, with onset of clinical manifestations around 59 years old...
2018: BioMed Research International
https://www.readbyqxmd.com/read/29780606/trismus-masticatory-myositis-and-antibodies-against-type-2m-fibers-in-a-mixed-breed-cat
#2
Stanley W Blazejewski, G Diane Shelton
Case summary: A 1-year-old male neutered mixed breed cat presented with a 2 month history of inability to fully open the mouth when yawning and decreased ability to prehend food. Physical examination revealed severe bilaterally symmetrical masticatory muscle atrophy, a restricted vertical mandibular range of motion of 11-12 mm, and a normal body condition score. Skull radiography was normal. A canine ELISA system against unique masticatory muscle fibers (2M antibody titer), was positive at 1:1000 (reference interval <1:100 in dogs, and was <1:100 using serum from five archived normal cats), indicating the presence of cross-reacting antibodies...
January 2018: JFMS Open Reports
https://www.readbyqxmd.com/read/29775118/blood-flow-restricted-resistance-training-in-patients-with-sporadic-inclusion-body-myositis-a-randomized-controlled-trial
#3
A N Jørgensen, P Aagaard, U Frandsen, E Boyle, L P Diederichsen
OBJECTIVES: To investigate the effect of 12 weeks of low-load blood-flow restricted resistance (BFR) training on self-reported and objective physical function, and maximal muscle strength in patients with sporadic inclusion body myositis (sIBM). METHOD: Twenty-two patients with sIBM were randomized into a training group (BFR group) or a non-exercising control group, according to CONsolidated Standards Of Reporting Trials (CONSORT) guidelines. The BFR group performed 12 weeks of BFR training twice per week...
May 18, 2018: Scandinavian Journal of Rheumatology
https://www.readbyqxmd.com/read/29773230/medications-received-by-patients-with-juvenile-dermatomyositis
#4
Takayuki Kishi, Nastaran Bayat, Michael M Ward, Adam M Huber, Lan Wu, Gulnara Mamyrova, Ira N Targoff, William J Warren-Hicks, Frederick W Miller, Lisa G Rider
OBJECTIVE: Few controlled studies are available to guide treatment decisions in juvenile dermatomyositis (JDM). This study evaluated therapies received, changes of treatment over time, and factors associated with medication choices in JDM. METHODS: We performed a retrospective analysis of the number and type of therapies and duration of treatment for 320 patients with JDM enrolled in a North American registry. Kaplan-Meier and logistic regression analysis were used to assess the association of demographic and clinical features and autoantibodies with medication usage...
March 28, 2018: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/29770465/expression-of-myxovirus-resistance-protein-a-a-possible-marker-of-muscle-disease-activity-and-autoantibody-specificities-in-juvenile-dermatomyositis
#5
Sirisucha Soponkanaporn, Claire T Deakin, Peter W Schutz, Lucy R Marshall, Shireena A Yasin, Cerise M Johnson, Erdal Sag, Sarah L Tansley, Neil J McHugh, Lucy R Wedderburn, Thomas S Jacques
AIMS: To evaluate the relationship between expression of Myxovirus-resistance protein A (MxA) protein on muscle biopsies by immunohistochemistry and disease activity in JDM patients. Also, another aim was to investigate whether the expression of MxA is related with myositis-specific autoantibodies (MSA) status in JDM patients. METHODS: 103 patients (median aged 6.3, IQR 0.5-15.9) enrolled in the Juvenile Dermatomyositis Cohort and Biomarker Study (JDCBS). Muscle biopsies were stained with MxA and scored...
May 16, 2018: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/29770361/differential-diagnosis-of-vacuolar-muscle-biopsies-use-of-p62-lc3-and-lamp2-immunohistochemistry
#6
Elisa Vittonatto, Silvia Boschi, Loredana CHIADò-Piat, Valentina Ponzalino, Sara Bortolani, Chiara Brusa, Innocenzo Rainero, Federica Ricci, Liliana Vercelli, Tiziana Mongini
Intrafibral vacuoles are the morphological hallmark in a wide variety of human skeletal muscle disorders with different etiology. In most cases, differential diagnosis is feasible with a routine histochemical work up of muscle biopsy. Ultrastructural analysis is an important confirmatory tool, but it is not widely available. Immunohistochemical stainings for p62, LAMP2 and LC3 are commonly available as tissutal marker for autophagy. We compared the immunohistochemical patterns for autophagic markers p62, LC3 and LAMP2 with routine histochemical markers in 39 biopsies from patients with definite diagnoses of glycogen storage disease type 2 (LOPD or Pompe disease, PD), sporadic inclusion body myositis (sIBM), oculo-pharyngeal muscular dystrophy (OPMD) and necrotizing myopathy (NM)...
December 2017: Acta Myologica: Myopathies and Cardiomyopathies: Official Journal of the Mediterranean Society of Myology
https://www.readbyqxmd.com/read/29768366/case-report-a-rare-case-of-focal-myositis-presenting-as-sartorius-muscle-contracture-a-case-report-and-review-of-literature
#7
Jin Wang, Juyang Jiao, Guanglei Zhao, Jingsheng Shi, Jun Xia
RATIONALE: Focal myositis (FM) is a very rare myopathy of unknown etiology characterized by focal enlargement within one single skeletal muscle. In particular, it occurs only involving the Sartorius muscle has never been reported. PATIENT CONCERNS: A 25-year-old man was admitted to the hospital with progressive restricted left hip joint extension, left thigh discomfort and gait disturbance for 6 years. DIAGNOSES: Combining clinical manifestations with results of radiological and pathological examinations, it was consistent with the diagnosis of FM INTERVENTIONS:: The patient received a surgery under general anesthesia to release the contracted Sartorius tendon...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29766941/idiopathic-inflammatory-myopathies-in-adults-a-comparative-study-of-bohan-and-peter-and-european-neuromuscular-center-2004-criteria
#8
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/29761011/associations-between-apparent-diffusion-coefficient-and-electromyography-parameters-in-myositis-a-preliminary-study
#9
Hans-Jonas Meyer, Alexander Emmer, Malte Kornhuber, Alexey Surov
Objective: MRI is widely used in several muscle disorders. Diffusion-weighted imaging (DWI) is an emergent imaging modality sensitive to microstructural alterations in tissue. The apparent diffusion coefficient (ADC) is used to quantify the random motion of water molecules. Electromyography (EMG) is a clinically used diagnostic tool in myositis. The aim of this study was to elucidate possible associations between ADC values and EMG findings in myositis patients. Method: Seven patients (eight investigated muscles) with myositis (mean age 51...
May 2018: Brain and Behavior
https://www.readbyqxmd.com/read/29759049/klinefelter-s-syndrome-with-lupus-encephalitis-and-retroperitoneal-teratoma
#10
C Ng Wq, S E Eide, Huang J, Khor Ym
We report a case of a middle-aged male who presented with pyrexia of unknown origin, oral ulcers, rash and bicytopenia. His past medical history included unexplained proteinuria, infertility and joint pain. Initial workup showed a large retroperitoneal soft tissue mass, which has appeared stable for 10 years. He subsequently developed neuropsychiatric symptoms with imaging findings of meningoencephalitis. Concurrent investigations showed elevated ANA, anti-double-stranded DNA (dsDNA) and ESR levels, as well as low complement levels...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29749720/anti-calponin-3-autoantibodies-a-new-specificity-in-patients-with-sj%C3%A3-gren-s-syndrome
#11
Julius Birnbaum, Ahmet Hoke, Aliya Lalji, Peter Calabresi, Pavan Bhargava, Livia Casciola-Rosen
OBJECTIVE: Autoantibodies are clinically useful for phenotyping patients across the spectrum of autoimmune rheumatic diseases. Using serum from a patient with Sjögren's Syndrome (SS), we detected a new specificity by immunoblotting. The purpose of this study was to identify this autoantibody and to evaluate its disease specificity. METHODS: A prominent 40 kDa band was detected when immunoblots were performed using a SS patient serum and lysate from rat dorsal root ganglia (DRG)...
May 11, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29748534/activated-dendritic-cells-modulate-proliferation-and-differentiation-of-human-myoblasts
#12
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/29745890/pattern-of-muscle-involvement-in-inclusion-body-myositis-a-sonographic-study
#13
Jemima Albayda, Lisa Christopher-Stine, Clifton O Bingham Iii, Julie J Paik, Eleni Tiniakou, Seth Billings, O Manny Uy, Philippe Burlina
OBJECTIVES: Imaging plays a role in myositis assessment by detecting muscle changes indicative of pathology. This study was conducted to determine the ultrasonographic pattern of muscle involvement in patients with inclusion body myositis (IBM) through an assessment of muscle echointensity. METHODS: Sixty-two individuals were consecutively studied, 18 with IBM, 16 with polymyositis or dermatomyositis and 28 normal controls. Standardised scans were completed bilaterally for the deltoids, biceps, flexor digitorum profundus (FDP), flexor carpi ulnaris, rectus femoris, tibialis anterior and gastrocnemius assessing for muscle echointensity changes...
May 8, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29745874/strong-correlation-between-cancer-progression-and-anti-transcription-intermediary-factor-1%C3%AE-antibodies-in-dermatomyositis-patients
#14
Mariko Ogawa-Momohara, Yoshinao Muro, Teruyuki Mitsuma, Masao Katayama, Koichi Yanaba, Mizuho Nara, Masao Kakeda, Michihiro Kono, Masashi Akiyama
OBJECTIVES: Transcription intermediary factor 1γ (ΤΙF1γ) protein is known as a tumour suppressor that promotes cellular differentiation. Autoantibodies to ΤΙF1γ have a strong clinical association with cancers associated with dermatomyositis (DM). This study aims to identify the clinical characteristics of cancers in anti-ΤΙF1γ antibody-positive adult patients with DM. METHODS: This retrospective analysis covered 160 adult DM patients who visited Nagoya University Hospital or collaborating medical centres between 2003 and 2016...
May 8, 2018: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/29745339/musculoskeletal-and-rheumatic-diseases-induced-by-immune-checkpoint-inhibitors-a-review-of-the-literature
#15
Devis Benfaremo, Lucia Manfredi, Michele Maria Luchetti, Armando Gabrielli
BACKGROUND: Immune checkpoint inhibitors are a new promising class of antitumor drugs that have been associated to a number of immune-related adverse events (AEs), including musculoskeletal and rheumatic disease. METHODS: We searched Medline reviewing reports of musculoskeletal and rheumatic AEs induced by immune checkpoint inhibitors. RESULTS: Several musculoskeletal and rheumatic AEs associated with immune checkpoint inhibitors treatment are reported in literature...
May 8, 2018: Current Drug Safety
https://www.readbyqxmd.com/read/29742000/haemoproteus-parahaemoproteus-spp-in-captive-bred-bobwhite-quail-colinus-virginianus-in-southern-utah-usa
#16
E Jane Kelly, Thomas J Baldwin, David D Frame, April L Childress, James F X Wellehan
A captive-bred Bobwhite Quail ( Colinus virginianus) ranch in southern Utah experienced high mortality rates in the late summer and fall of 2012. Nine juvenile birds were necropsied at the Utah Veterinary Diagnostic Laboratory. Gross lesions included pale skeletal muscle with multifocal hemorrhages and petechiae in the air sacs and serosal surfaces of most organs. Histologically there was moderate to severe, multifocal, degenerative myositis with intramyofiber schizonts and minimal lymphoplasmacytic infiltrates in the proventriculus, ventriculus, heart, and skeletal muscle...
May 9, 2018: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/29741079/clinical-and-prognostic-significance-of-muscle-biopsy-in-sarcoidosis
#17
Halil Yanardag, Cuneyt Tetikkurt, Muammer Bilir
The main objective of this study was to evaluate the influence of muscle involvement on the clinical features, prognostic outcome, extrapulmonary organ, and endobronchial involvement in sarcoidosis patients. The second aim was to assess the diagnostic yield of muscle biopsy for the histopathologic identification of sarcoidosis.  Fifty sarcoidosis patients participated in the study. The patients were classified into two groups according to the histopathologic presence of non-caseating granulomatous inflammatory pattern of the muscle biopsy samples and were evaluated retrospectively in regard to clinical features, prognosis, extrapulmonary, and endobronchial disease involvement...
April 30, 2018: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
https://www.readbyqxmd.com/read/29737466/clinical-features-of-haff-disease-and-myositis-after-the-consumption-of-boiled-brackish-water-crayfish-a-retrospective-study-of-96-cases-at-a-single-centre
#18
Fei He, Jun Ni, Jun-Ai Huang, Yao Liu, Chao Wu, Jun Wang
The present study describes the difference in clinical features between the patients with Haff disease and crayfish-related myositis (CRM) after crayfish consumption. This was a single-centre, retrospective analysis at the Emergency Department of the Drum Tower Hospital of Nanjing University School of Medicine from July to August of 2016. The baseline information came from the Electronic Medical Record System at the institution. Totally 96 patients were included, of whom 52 patients were confirmed to have Haff disease and 44 patients were CRM...
May 8, 2018: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/29728522/muscular-and-extramuscular-clinical-features-of-patients-with-anti-pm-scl-autoantibodies
#19
Rebecca De Lorenzo, Iago Pinal-Fernandez, Wilson Huang, Jemima Albayda, Eleni Tiniakou, Cheilonda Johnson, Jose C Milisenda, Maria Casal-Dominguez, Andrea M Corse, Sonye K Danoff, Lisa Christopher-Stine, Julie J Paik, Andrew L Mammen
OBJECTIVE: To define the clinical features of myositis patients with anti-PM/Scl-75 and/or anti-PM/Scl-100 autoantibodies at disease onset and during the course of disease and compare them to patients with other forms of myositis. METHODS: In this longitudinal cohort study, the prevalence and severity of clinical features at disease onset and during follow-up were compared between anti-PM/Scl-positive patients and those with the antisynthetase syndrome (AS), dermatomyositis (DM), and immune-mediated necrotizing myopathy (IMNM)...
May 4, 2018: Neurology
https://www.readbyqxmd.com/read/29720800/necrotizing-autoimmune-myopathy-clinicopathologic-study-from-a-single-tertiary-care-centre
#20
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
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