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Muscular myopathy

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https://www.readbyqxmd.com/read/28738907/rig-i-expression-in-perifascicular-myofibers-is-a-reliable-biomarker-of-dermatomyositis
#1
Xavier Suárez-Calvet, Eduard Gallardo, Iago Pinal-Fernandez, Noemi De Luna, Cinta Lleixà, Jordi Díaz-Manera, Ricardo Rojas-García, Ivan Castellví, M Angeles Martínez, Josep M Grau, Albert Selva-O'Callaghan, Isabel Illa
BACKGROUND: Dermatomyositis (DM) is inflammatory myopathy or myositis characterized by muscle weakness and skin manifestations. In the differential diagnosis of DM the evaluation of the muscle biopsy is of importance among other parameters. Perifascicular atrophy in the muscle biopsy is considered a hallmark of DM. However, perifascicular atrophy is not observed in all patients with DM and, conversely, perifascicular atrophy can be observed in other myositis such as antisynthetase syndrome (ASS), complicating DM diagnosis...
July 24, 2017: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/28728682/-statin-and-risk-of-falls-in-the-elderly-a-sytematic-review-of-the-literature
#2
Luis Carlos Venegas Sanabria, Stephany Barbosa Balaquera, Ana María Suarez Acosta, Ángel Alberto García Peña, Carlos Alberto Cano Gutiérrez
BACKGROUND: With the high incidence of cardiovascular events in the elderly population the effectiveness of statins in reducing mortality from coronary events has been demonstrated. However, there have been adverse effects, such as myalgia, myopathy, myonecrosis, not to mention the falls as a result of muscle damage with statin use. OBJECTIVE: The purpose of this study is to conduct a systematic review to assess the literature on the association between statin use and the risk of falls...
July 17, 2017: Revista Española de Geriatría y Gerontología
https://www.readbyqxmd.com/read/28719515/anaesthetic-management-of-patients-with-myopathies
#3
Mark Schieren, Jerome Defosse, Andreas Böhmer, Frank Wappler, Mark U Gerbershagen
: The anaesthetic management of patients with myopathies is challenging. Considering the low incidence and heterogeneity of these disorders, most anaesthetists are unfamiliar with key symptoms, associated co-morbidities and implications for anaesthesia. The pre-anaesthetic assessment aims at the detection of potentially undiagnosed myopathic patients and, in case of known or suspected muscular disease, on the quantification of disease progression. Ancillary testing (e.g. echocardiography, ECG, lung function testing etc...
July 15, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28716623/a-second-truncation-in-ttn-causes-early-onset-recessive-muscular-dystrophy
#4
Elizabeth Harris, Ana Töpf, Anna Vihola, Anni Evilä, Rita Barresi, Judith Hudson, Peter Hackman, Brian Herron, Daniel MacArthur, Hanns Lochmüller, Kate Bushby, Bjarne Udd, Volker Straub
Mutations in the gene encoding the giant skeletal muscle protein titin are associated with a variety of muscle disorders, including recessive congenital myopathies ±cardiomyopathy, limb girdle muscular dystrophy (LGMD) and late onset dominant distal myopathy. Heterozygous truncating mutations have also been linked to dilated cardiomyopathy. The phenotypic spectrum of titinopathies is emerging and expanding, as next generation sequencing techniques make this large gene amenable to sequencing. We undertook whole exome sequencing in four individuals with LGMD...
June 22, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28702326/rev-erb-co-regulates-muscle-regeneration-via-tethered-interaction-with-the-nf-y-cistrome
#5
Ryan D Welch, Chun Guo, Monideepa Sengupta, Katherine J Carpenter, Natalie A Stephens, Stacy A Arnett, Marvin J Meyers, Lauren M Sparks, Steven R Smith, Jinsong Zhang, Thomas P Burris, Colin A Flaveny
OBJECTIVE: The loss of skeletal muscle mass and strength are a central feature of traumatic injury and degenerative myopathies. Unfortunately, pharmacological interventions typically fail to stem the long-term decline in quality of life. Reduced Rev-Erb-mediated gene suppression in cultured C2C12 myoblasts has been shown to stimulate myoblast differentiation. Yet the mechanisms that allow Rev-Erb to pleiotropically inhibit muscle differentiation are not well understood. In this study, we sought to elucidate the role of Rev-Erb in the regulation of muscle differentiation and regeneration in vivo...
July 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28702169/exome-sequencing-reveals-independent-sgcd-deletions-causing-limb-girdle-muscular-dystrophy-in-boston-terriers
#6
Melissa L Cox, Jacquelyn M Evans, Alexander G Davis, Ling T Guo, Jennifer R Levy, Alison N Starr-Moss, Elina Salmela, Marjo K Hytönen, Hannes Lohi, Kevin P Campbell, Leigh Anne Clark, G Diane Shelton
BACKGROUND: Limb-girdle muscular dystrophies (LGMDs) are a heterogeneous group of inherited autosomal myopathies that preferentially affect voluntary muscles of the shoulders and hips. LGMD has been clinically described in several breeds of dogs, but the responsible mutations are unknown. The clinical presentation in dogs is characterized by marked muscle weakness and atrophy in the shoulder and hips during puppyhood. METHODS: Following clinical evaluation, the identification of the dystrophic histological phenotype on muscle histology, and demonstration of the absence of sarcoglycan-sarcospan complex by immunostaining, whole exome sequencing was performed on five Boston terriers: one affected dog and its three family members and one unrelated affected dog...
2017: Skeletal Muscle
https://www.readbyqxmd.com/read/28697784/exome-sequencing-reveals-independent-sgcd-deletions-causing-limb-girdle-muscular-dystrophy-in-boston-terriers
#7
Melissa L Cox, Jacquelyn M Evans, Alexander G Davis, Ling T Guo, Jennifer R Levy, Alison N Starr-Moss, Elina Salmela, Marjo K Hytönen, Hannes Lohi, Kevin P Campbell, Leigh Anne Clark, G Diane Shelton
BACKGROUND: Limb-girdle muscular dystrophies (LGMDs) are a heterogeneous group of inherited autosomal myopathies that preferentially affect voluntary muscles of the shoulders and hips. LGMD has been clinically described in several breeds of dogs, but the responsible mutations are unknown. The clinical presentation in dogs is characterized by marked muscle weakness and atrophy in the shoulder and hips during puppyhood. METHODS: Following clinical evaluation, the identification of the dystrophic histological phenotype on muscle histology, and demonstration of the absence of sarcoglycan-sarcospan complex by immunostaining, whole exome sequencing was performed on five Boston terriers: one affected dog and its three family members and one unrelated affected dog...
July 11, 2017: Skeletal Muscle
https://www.readbyqxmd.com/read/28690764/are-antioxidants-a-potential-therapy-for-fshd-a-review-of-the-literature
#8
REVIEW
Adam Philip Denny, Alison Kay Heather
Facioscapulohumeral muscular dystrophy (FSHD) is an inherited myopathy affecting approximately 1 in 7500 individuals worldwide. It is a progressive disease characterised by skeletal muscle weakness and wasting. A genetic mutation on the 4q35 chromosome results in the expression of the double homeobox 4 gene (DUX4) which drives oxidative stress, inflammation, toxicity, and atrophy within the skeletal muscle. FSHD is characterised by oxidative stress, and there is currently no cure and a lack of therapies for the disease...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28689515/rapidly-progressive-heart-failure-requiring-transplantation-in-muscular-dystrophy-a-need-for-frequent-screening
#9
Justin M Pick, Zachary D Ellis, Juan C Alejos, Anthony C Chang
Fukuyama congenital muscular dystrophy weakens both skeletal and cardiac muscles, but the rate of cardiomyopathic progression can accelerate faster than that of skeletal muscles. A 14-year-old boy with Fukuyama congenital muscular dystrophy presented with mild skeletal myopathy but severe cardiomyopathy requiring heart transplantation within 1 year of declining heart function. These patients need frequent screening regardless of musculoskeletal symptoms.
July 10, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/28688748/congenital-muscular-dystrophies-in-the-uk-population-clinical-and-molecular-spectrum-of-a-large-cohort-diagnosed-over-a-12-year-period
#10
Maria Sframeli, Anna Sarkozy, Marta Bertoli, Guja Astrea, Judith Hudson, Mariacristina Scoto, Rachael Mein, Michael Yau, Rahul Phadke, Lucy Feng, Caroline Sewry, Adeline Ngoh Seow Fen, Cheryl Longman, Gary McCullagh, Volker Straub, Stephanie Robb, Adnan Manzur, Kate Bushby, Francesco Muntoni
Congenital muscular dystrophies (CMDs) are clinically and genetically heterogeneous conditions; some fatal in the first few years of life and with central nervous system involvement, whereas others present a milder course. We provide a comprehensive report of the relative frequency and clinical and genetic spectrum of CMD in the UK. Genetic analysis of CMD genes in the UK is centralised in London and Newcastle. Between 2001 and 2013, a genetically confirmed diagnosis of CMD was obtained for 249 unrelated individuals referred to these services...
June 16, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28681266/muscular-adverse-drug-reactions-associated-with-proton-pump-inhibitors-a-disproportionality-analysis-using-the-italian-national-network-of-pharmacovigilance-database
#11
Alice Capogrosso Sansone, Irma Convertino, Maria Teresa Galiulo, Stefano Salvadori, Stefania Pieroni, Tamara Knezevic, Stefania Mantarro, Alessandra Marino, Manfred Hauben, Corrado Blandizzi, Marco Tuccori
INTRODUCTION: Proton pump inhibitors (PPIs) have been implicated in the occurrence of moderate to severe myopathies in several case reports. AIM: This study was performed to assess the reporting risk of muscular adverse drug reactions (ADRs) associated with PPIs in the Italian National Network of Pharmacovigilance database. METHODS: A disproportionality analysis (case/non-case) was performed using spontaneous reports collected in the database between July 1983 and May 2016...
July 5, 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/28670500/peculiar-clinical-presentation-of-coxsackievirus-b4-infection-neonatal-restrictive-cardiomyopathy
#12
Pauline Le Van Quyen, Philippe Desprez, Angelo Livolsi, Véronique Lindner, Samira Fafi-Kremer, Pauline Helms, Maria Cristina Antal
Introduction  Restrictive cardiomyopathy in fetuses and neonates is extremely rare and has a poor outcome. Its etiology in neonates is elusive: metabolic diseases (e.g., Gaucher, Hurler syndrome), neuromuscular disorders (e.g., muscular dystrophies, myofibrillar myopathies), or rare presentation of genetic syndromes (e.g., Coffin-Lowry syndrome) account for a minority of the cases, the majority remaining idiopathic. Case Study  We report the case of a 17-day-old male infant presenting cardiogenic shock following a restrictive dysfunction of the left ventricle...
April 2017: American Journal of Perinatology Reports
https://www.readbyqxmd.com/read/28669131/congenital-muscular-dystrophies-and-myopathies-an-overview-and-update
#13
David C Schorling, Janbernd Kirschner, Carsten G Bönnemann
No abstract text is available yet for this article.
August 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28668260/-amyopathic-dermatomyositis-dm-with-anti-mda5-antibodies-associated-with-bullous-pemphigoid-sj%C3%A3-gren-syndrome-and-gastric-malt-lymphoma
#14
B Garcia, F Dabouz, L Pascal, M Gillard, P Modiano
BACKGROUND: The inflammatory myopathies are a heterogeneous group of muscle diseases and comprise polymyositis, dermatomyositis (DM), myopathies associated with cancers, necrotising myositis and inclusion body myositis. DM occasionally exhibits few or no muscular signs: i.e. hypomyopathic/amyopathic DM. Anti-MDA5 dermatomyositis (DM) is a rare form of dermatomyositis that is frequently amyopathic; the prognosis is linked mainly to pulmonary involvement. PATIENTS AND METHODS: A 69-year-old woman treated for mucosa-associated lymphoid tissue (MALT) gastric lymphoma was referred for a bullous eruption...
June 28, 2017: Annales de Dermatologie et de Vénéréologie
https://www.readbyqxmd.com/read/28666572/rare-diagnosis-of-telethoninopathy-lgmd2g-in-a-turkish-patient
#15
Elena Ikenberg, Ivan Karin, Birgit Ertl-Wagner, Angela Abicht, Stefanie Bulst, Krause Sabine, Benedikt Schoser, Peter Reilich, Maggie C Walter
Telethoninopathy is one of the rarest forms of Limb-girdle muscular dystrophy (LGMD). So far, only a small number of LGMD type 2 G (LGMD2G) patients have been described, mostly patients from Brazil. Here we present a 35-year-old female patient of Turkish ethnicity with LGMD2G due to a novel homozygous frame-shift mutation c.90_91del (p.Ser31Hisfs*11) in the telethonin gene, probably leading to truncated protein or nonsense mediated decay. Myalgia and walking on tiptoes were the first symptoms starting in early childhood, around age 22 proximal, later distal leg muscles became affected...
June 1, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28660205/pneumothoraces-in-collagen-vi-related-dystrophy-a-case-series-and-recommendations-for-management
#16
Kristin L Fraser, Scott Wong, A Reghan Foley, Sameer Chhibber, Carsten G Bönnemann, Daniel J Lesser, Carla Grosmann, Anne Rutkowski
Collagen VI-related dystrophy (collagen VI-RD) is a rare neuromuscular condition caused by mutations in the COL6A1, COL6A2 or COL6A3 genes. The phenotypic spectrum includes early-onset Ullrich congenital muscular dystrophy, adult-onset Bethlem myopathy and an intermediate phenotype. The disorder is characterised by distal hyperlaxity and progressive muscle weakness, joint contractures and respiratory insufficiency. Respiratory insufficiency is attributed to chest wall contractures, scoliosis, impaired diaphragmatic function and intercostal muscle weakness...
April 2017: ERJ Open Research
https://www.readbyqxmd.com/read/28649424/an-alanine-expanded-pabpn1-causes-increased-utilization-of-intronic-polyadenylation-sites
#17
Tooba Abbassi-Daloii, Soheil Yousefi, Eleonora de Klerk, Laurens Grossouw, Muhammad Riaz, Peter A C 't Hoen, Vered Raz
In eukaryote genomes, the polyadenylation site marks termination of mature RNA transcripts by a poly-adenine tail. The polyadenylation site is recognized by a dynamic protein complex, among which the poly-adenine-binding protein nuclear1 plays a key role. Reduced poly-adenine-binding protein nuclear1 levels are found in aged muscles and are even lower in oculopharyngeal muscular dystrophy patients. Oculopharyngeal muscular dystrophy is a rare, late onset autosomal dominant myopathy, and is caused by an alanine expansion mutation in poly-adenine-binding protein nuclear1...
2017: NPJ Aging and Mechanisms of Disease
https://www.readbyqxmd.com/read/28637766/emery-dreifuss-muscular-dystrophy-linked-genes-and-centronuclear-myopathy-linked-genes-regulate-myonuclear-movement-by-distinct-mechanisms
#18
Mary Ann Collins, Torrey R Mandigo, Jaclyn M Camuglia, Gabriella A Vazquez, Alyssa J Anderson, Christine H Hudson, John L Hanron, Eric S Folker
Muscle cells are a syncytium in which the many nuclei are positioned to maximize the distance between adjacent nuclei. Although mispositioned nuclei are correlated with many muscle disorders, it is not known whether this common phenotype is the result of a common mechanism. To answer this question, the expression of genes linked to Emery-Dreifuss Muscular Dystrophy (EDMD) and Centronuclear myopathy (CNM) was disrupted in Drosophila, and the position of the nuclei was evaluated. We found that the genes linked to EDMD and CNM were each necessary to properly position nuclei...
June 21, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28615891/limb-girdle-muscular-dystrophies-in-india-a-review
#19
REVIEW
Satish V Khadilkar, Hinaben Dayalal Faldu, Sarika Bapuso Patil, Rakesh Singh
Limb-girdle muscular dystrophies (LGMDs) are common in India. Information on LGMDs has been gradually evolving in the recent years. This information is scattered in case series and case studies. The aim of this study is to collate available Indian information on LGMDs and put it in perspective. PubMed search using keywords such as limb-girdle muscular dystrophies in India, sarcoglycanopathies, dysferlinopathy, calpainopathy, and GNE myopathy was carried out. The published information on LGMDs in Indian context suggests that dysferlinopathy, calpainopathy, sarcoglycanopathies, and other myopathies such as GNE myopathy are frequently seen in India...
April 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28606402/clinical-histological-and-radiological-responses-to-methylprednisolone-in-hiv-associated-rod-myopathy
#20
André M S Silva, Rodrigo H Mendonça, Cristiane A M Moreno, Eduardo P Estephan, Paulo V P Helito, Mary S Carvalho, Edmar Zanoteli
Skeletal muscle involvement as a neurologic manifestation in individuals with HIV is rare, especially as rod myopathy. We describe a 41-year-old male with HIV infection who presented progressive proximal muscle weakness and limb-girdle atrophy. A muscle magnetic resonance image showed bilateral fatty infiltration and post-contrast enhancement in the arm and thigh muscles. The muscle biopsy revealed intracytoplasmic aggregates with appearance of nemaline rod bodies with Gomori trichrome staining and electron microscopy in most fibers...
May 12, 2017: Neuromuscular Disorders: NMD
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