742 results match your criteria Emery-Dreifuss Muscular Dystrophy


Cardiac Involvement in Emery-Dreifuss Muscular Dystrophy and Related Management Strategies.

Int Heart J 2018 Dec 5. Epub 2018 Dec 5.

Department of Cardiovascular Medicine, Second Xiangya Hospital of Central South University.

Emery-Dreifuss muscular dystrophy (EDMD) is a group of hereditary muscular dystrophy syndrome caused by deficiency of genes encoding nuclear envelope proteins. Patients having EDMD show the triad of muscle dystrophy, joint contracture, and cardiac disease. In almost all patients, cardiac involvement is prevalent and is the most severe aspect of EDMD. Read More

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December 2018
1 Read

A novel EMD mutation in a Chinese family with initial diagnosis of conduction cardiomyopathy.

Brain Behav 2018 Dec 3:e01167. Epub 2018 Dec 3.

Department of Medical Genetics, The Second Xiangya Hospital, Central South University, Changsha, China.

Introduction: Emery-Dreifuss muscular dystrophy (EDMD) is a hereditary myopathy characterized as triad of muscular dystrophy, joint contractures, and conduction cardiomyopathy. In this study, we diagnosed a X-linked recessive EDMD patient with severe conduction cardiomyopathy while noteless muscular and joint disorders.

Methods: A Chinese cardiomyopathy family spanning four generations was enrolled in the study. Read More

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December 2018
3 Reads

Cardiac manifestations in Emery-Dreifuss muscular dystrophy.

CMAJ 2018 Dec;190(48):E1414-E1417

Department of Medicine (Faiella), Queen Elizabeth II Health Sciences Centre, Dalhousie University, Halifax, NS; Division of Cardiology (Bessoudo), New Brunswick Heart Centre, Saint John Regional Hospital, Saint John, NB.

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December 2018
2 Reads

Cardiac Phenotypes in Hereditary Muscle Disorders: JACC State-of-the-Art Review.

J Am Coll Cardiol 2018 Nov;72(20):2485-2506

Centre for Inherited Cardiovascular Diseases, IRCCS Foundation, University Hospital Policlinico San Matteo, Pavia, Italy.

Hereditary muscular diseases commonly involve the heart. Cardiac manifestations encompass a spectrum of phenotypes, including both cardiomyopathies and rhythm disorders. Common biomarkers suggesting cardiomuscular diseases include increased circulating creatine kinase and/or lactic acid levels or disease-specific metabolic indicators. Read More

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November 2018
4 Reads

The Pathogenesis and Therapies of Striated Muscle Laminopathies.

Front Physiol 2018 30;9:1533. Epub 2018 Oct 30.

Sorbonne Université, INSERM, Institut de Myologie, Center of Research in Myology, UMRS 974, Paris, France.

Emery-Dreifuss muscular dystrophy (EDMD) is a genetic condition characterized by early contractures, skeletal muscle weakness, and cardiomyopathy. During the last 20 years, various genetic approaches led to the identification of causal genes of EDMD and related disorders, all encoding nuclear envelope proteins. By their respective localization either at the inner nuclear membrane or the outer nuclear membrane, these proteins interact with each other and establish a connection between the nucleus and the cytoskeleton. Read More

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October 2018
2 Reads

Loss of Sarcomeric Scaffolding as a Common Baseline Histopathologic Lesion in Titin-Related Myopathies.

J Neuropathol Exp Neurol 2018 Dec;77(12):1101-1114

Neuromuscular Morphology Unit, Myology Institute, GHU Pitié-Salpêtrière, Paris, France.

Titin-related myopathies are heterogeneous clinical conditions associated with mutations in TTN. To define their histopathologic boundaries and try to overcome the difficulty in assessing the pathogenic role of TTN variants, we performed a thorough morphological skeletal muscle analysis including light and electron microscopy in 23 patients with different clinical phenotypes presenting pathogenic autosomal dominant or autosomal recessive (AR) mutations located in different TTN domains. We identified a consistent pattern characterized by diverse defects in oxidative staining with prominent nuclear internalization in congenital phenotypes (AR-CM) (n = 10), ± necrotic/regenerative fibers, associated with endomysial fibrosis and rimmed vacuoles (RVs) in AR early-onset Emery-Dreifuss-like (AR-ED) (n = 4) and AR adult-onset distal myopathies (n = 4), and cytoplasmic bodies (CBs) as predominant finding in hereditary myopathy with early respiratory failure (HMERF) patients (n = 5). Read More

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December 2018
9 Reads

Emerin induces nuclear breakage in Xenopus extract and early embryos.

Mol Biol Cell 2018 Oct 17:mbcE18050277. Epub 2018 Oct 17.

Department of Molecular Biology, University of Wyoming, Laramie, WY, 82071.

Emerin is an inner nuclear membrane protein often mutated in Emery-Dreifuss muscular dystrophy. Because emerin has diverse roles in nuclear mechanics, cytoskeletal organization, and gene expression, it has been difficult to elucidate emerin's contribution to nuclear structure and disease pathology. In this study, we investigated emerin's impact on nuclei assembled in Xenopus laevis egg extract, a simplified biochemical system that lacks potentially confounding cellular factors and activities. Read More

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October 2018
5 Reads

Samp1 Mislocalization in Emery-Dreifuss Muscular Dystrophy.

Cells 2018 Oct 15;7(10). Epub 2018 Oct 15.

CNR Institute of Molecular Genetics, Unit of Bologna, 40136 Bologna, Italy.

linked-Emery-Dreifuss muscular dystrophy (EDMD2) is a rare disease characterized by muscle weakness, muscle wasting, and cardiomyopathy with conduction defects. The mutated protein lamin A/C binds several nuclear envelope components including the Linker of Nucleoskeleton and Cytoskeleton (LINC) complex and the inner nuclear membrane protein Samp1 (Spindle Associated Membrane Protein 1). Considering that Samp1 is upregulated during muscle cell differentiation and it is involved in nuclear movement, we hypothesized that it could be part of the protein platform formed by LINC proteins and prelamin A at the myotube nuclear envelope and, as previously demonstrated for those proteins, could be affected in EDMD2. Read More

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October 2018
1 Read

Emery-Dreifuss muscular dystrophy-related myopathy with TMEM43 mutations.

Muscle Nerve 2018 Oct 12. Epub 2018 Oct 12.

Department of Neurology, National Center Hospital, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo, 187-8551, Japan.

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October 2018
2.283 Impact Factor

A Young Patient with Emery-Dreifuss Muscular Dystrophy Treated with Endovascular Therapy for Cardioembolic Stroke: A Case Report.

Tokai J Exp Clin Med 2018 Sep 20;43(3):103-105. Epub 2018 Sep 20.

Department of Neurology, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan.

We had a case of Emery-Dreifuss muscular dystrophy (EDMD) in an 18-year-old woman who underwent endovascular therapy for a cardioembolic stroke. At 5 years old, she showed a high creatine kinase level and atrial fibrillation on electrocardiography in our hospital. Finally, she was diagnosed as having EDMD by genetic screening that revealed mutations in the LMNA gene (c. Read More

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September 2018
11 Reads

Cardiolaminopathies from bench to bedside: challenges in clinical decision-making with focus on arrhythmia-related outcomes.

Nucleus 2018 ;9(1):442-459

c CNR Institute of Molecular Genetics , Unit of Bologna , Bologna , Italy.

Lamin A/C gene mutations can be associated with cardiac diseases, usually referred to as 'cardiolaminopathies' characterized by arrhythmic disorders and/or left ventricular or biventricular dysfunction up to an overt picture of heart failure. The phenotypic cardiac manifestations of laminopathies are frequently mixed in complex clinical patterns and specifically may include bradyarrhythmias (sinus node disease or atrioventricular blocks), atrial arrhythmias (atrial fibrillation, atrial flutter, atrial standstill), ventricular tachyarrhythmias and heart failure of variable degrees of severity. Family history, physical examination, laboratory findings (specifically serum creatine phosphokinase values) and ECG findings are often important 'red flags' in diagnosing a 'cardiolaminopathy'. Read More

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January 2018
1 Read

The clinical spectrum and genetic variability of limb-girdle muscular dystrophy in a cohort of Chinese patients.

Orphanet J Rare Dis 2018 Aug 14;13(1):133. Epub 2018 Aug 14.

Department of Neurology, National Key Clinical Department and Key Discipline of Neurology, The First Affiliated Hospital, Sun Yat-sen University, 58 Zhongshan 2 Road, Guangzhou, 510080, GD, China.

Background: Limb-girdle muscular dystrophy (LGMD) is a commonly diagnosed hereditary muscular disorder, characterized by the progressive weakness of the limb-girdle muscles. Although the condition has been well-characterized, clinical and genetic heterogeneity can be observed in patients with LGMD. Here, we aimed to describe the clinical manifestations and genetic variability among a cohort of patients with LGMD in South China. Read More

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August 2018
6 Reads

Obesity and pericallosal lipoma in X-linked emery-dreifuss muscular dystrophy: A case report - Does Emerin play a role in adipocyte differentiation?

World J Radiol 2018 Jul;10(7):78-82

Department of Radiology, Azienda Ospedaliero Universitaria, Cagliari 09045, Italy.

Emery dreifuss muscular dystrophy (EDMD) is a rare genetic syndrome consisting of tendon retractions, progressive muscle atrophy and cardiac involvement. We report a case of an obese patient affected by the familial X-linked form in which a pericallosal lipoma was found during investigation for a suspected acute vasculopathy. To date, EDMD has never been associated with cerebral lipomas and the X-linked form was never considered to be involved in lipodystrophic syndromes or non-muscular conditions. Read More

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Theoretical basis for a new approach of studying Emery-Dreifuss muscular dystrophy by means of thermography.

Med Hypotheses 2018 Sep 28;118:103-106. Epub 2018 Jun 28.

Azienda Sanitaria Locale Nuoro, Hospital San Francesco, Italy.

Introduction: Emery-Dreifuss muscular dystrophy (EDMD) is a clinical condition characterized by neuro-skeletal and cardiac impairments. By means of thermography, an image acquisition technique that allows the recording of the heat emitted by objects or bodies, news insight can be obtained insights about the evaluation and follow-up of this disease. Actually, musculoskeletal disorders are a major cause of counseling and access to rehabilitation services and are some of the most important problems that affect the quality of life of many people. Read More

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September 2018

Analysis of RNA-Seq datasets reveals enrichment of tissue-specific splice variants for nuclear envelope proteins.

Nucleus 2018 ;9(1):410-430

a The Wellcome Centre for Cell Biology and Institute of Cell Biology , University of Edinburgh , Edinburgh , UK.

Laminopathies yield tissue-specific pathologies, yet arise from mutation of ubiquitously-expressed genes. A little investigated hypothesis to explain this is that the mutated proteins or their partners have tissue-specific splice variants. To test this, we analyzed RNA-Seq datasets, finding novel isoforms or isoform tissue-specificity for: Lap2, linked to cardiomyopathy; Nesprin 2, linked to Emery-Dreifuss muscular dystrophy and Lmo7, that regulates the Emery-Dreifuss muscular dystrophy linked emerin gene. Read More

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January 2018
23 Reads

Up-regulation of Toll-like receptors 7 and 9 and its potential implications in the pathogenic mechanisms of LMNA-related myopathies.

Nucleus 2018 ;9(1):398-409

a Neurology IV - Neuroimmunology and Neuromuscular Diseases Unit , Fondazione IRCCS Istituto Neurologico "Carlo Besta" , Milan , Italy.

Laminopathies are a heterogeneous group of diseases, caused by mutations in lamin A/C proteins. The most common laminopathy (LMNA-related myopathies, LMNA-RM) affects skeletal and cardiac muscles; muscle histopathology is variable, ranging from mild unspecific changes to dystrophic features, sometimes with inflammatory evidence. Whether the genetic defect might activate innate immune components, leading to chronic inflammation, myofiber necrosis and fibrosis, is still unknown. Read More

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January 2018
1 Read

Muscle Magnetic Resonance Imaging in Patients with Various Clinical Subtypes of -Related Muscular Dystrophy.

Chin Med J (Engl) 2018 Jun;131(12):1472-1479

Department of Neurology, Peking University First Hospital, Beijing 100034, China.

Background: LMNA-related muscular dystrophy can manifest in a wide variety of disorders, including Emery-Dreifuss muscular dystrophy (EDMD), limb-girdle muscular dystrophy (LGMD), and LMNA-associated congenital muscular dystrophy (L-CMD). Muscle magnetic resonance imaging (MRI) has become a useful tool in the diagnostic workup of patients with muscle dystrophies. This study aimed to investigate whether there is a consistent pattern of MRI changes in patients with LMNA mutations in various muscle subtypes. Read More

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June 2018
13 Reads

Risk stratification in laminopathies and Emery Dreifuss muscular dystrophy.

Neurol Int 2018 Mar 4;10(1):7468. Epub 2018 Apr 4.

CHU Raymond Poincaré et Université Versailles Saint Quentin en Yvelines, Garches, France.

Laminopathies are genetic disorders due to gene mutation encoding for proteins of the nuclear envelope. Patients are at risk of conduction defect, arrhythmia, sudden death and heart failure. The authors summarize predictive factors for cardiac events reported in the literature in this group of disease. Read More

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March 2018
2 Reads

Inflammatory myopathy in the context of an unusual overlapping laminopathy.

Arch Endocrinol Metab 2018 Jun 17;62(3):376-382. Epub 2018 May 17.

UETeM - Molecular Pathology Group. IDIS-CIMUS, University of Santiago de Compostela, Spain.

Laminopathies are genetic disorders associated with alterations in nuclear envelope proteins, known as lamins. The LMNA gene encodes lamins A and C, and LMNA mutations have been linked to diseases involving fat (type 2 familial partial lipodystrophy [FPLD2]), muscle (type 2 Emery-Dreifuss muscular dystrophy [EDMD2], type 1B limb-girdle muscular dystrophy [LGMD1B], and dilated cardiomyopathy), nerves (type 2B1 Charcot-Marie-Tooth disease), and premature aging syndromes. Moreover, overlapping syndromes have been reported. Read More

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June 2018
9 Reads

Mouse models of nesprin-related diseases.

Biochem Soc Trans 2018 06 21;46(3):669-681. Epub 2018 May 21.

King's College London British Heart Foundation Centre of Research Excellence, Cardiovascular Division, London SE5 9NU, U.K.

Nesprins (nuclear envelope spectrin repeat proteins) are a family of multi-isomeric scaffolding proteins. Nesprins form the LInker of Nucleoskeleton-and-Cytoskeleton (LINC) complex with SUN (Sad1p/UNC84) domain-containing proteins at the nuclear envelope, in association with lamin A/C and emerin, linking the nucleoskeleton to the cytoskeleton. The LINC complex serves as both a physical linker between the nuclear lamina and the cytoskeleton and a mechanosensor. Read More

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June 2018
4 Reads

Three new cases of dilated cardiomyopathy caused by mutations in LMNA gene.

Acta Myol 2017 Dec 1;36(4):207-212. Epub 2017 Dec 1.

Institute of Genetics and Cytology, National Academy of Sciences of Belarus, Minsk, Belarus.

Three cases of delated cardiomyopathy (DCM) with conduction defects (OMIM 115200), limb girdle muscular dystrophy 1B (OMIM 159001) and autosomal dominant Emery-Dreifuss muscular dystrophy 2 (OMIM 181350), all associated with different LMNA mutations are presented. Three heterozygous missense mutations were identified in unrelated patients - p.W520R (c. Read More

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December 2017
3 Reads

E3 ubiquitin ligase HECW2 targets PCNA and lamin B1.

Biochim Biophys Acta Mol Cell Res 2018 08 17;1865(8):1088-1104. Epub 2018 May 17.

CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India. Electronic address:

Lamins constitute the major architectural proteins of the nuclear lamina that help in maintaining nuclear organization. Mutations in lamins are associated with diverse degenerative diseases, collectively termed laminopathies. HECW2, a HECT-type E3 ubiquitin ligase, is transcriptionally upregulated in HeLa cells expressing Emery-Dreifuss muscular dystrophy-causing-lamin A mutants. Read More

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Elevated TGF β2 serum levels in Emery-Dreifuss Muscular Dystrophy: Implications for myocyte and tenocyte differentiation and fibrogenic processes.

Nucleus 2018 Jan;9(1):292-304

j Institute of Molecular Genetics (IGM)-CNR, Unit of Bologna , Bologna , Italy.

Among rare diseases caused by mutations in LMNA gene, Emery-Dreifuss Muscular Dystrophy type 2 and Limb-Girdle muscular Dystrophy 1B are characterized by muscle weakness and wasting, joint contractures, cardiomyopathy with conduction system disorders. Circulating biomarkers for these pathologies have not been identified. Here, we analyzed the secretome of a cohort of patients affected by these muscular laminopathies in the attempt to identify a common signature. Read More

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January 2018
9 Reads

Clinical aspects of Emery-Dreifuss muscular dystrophy.

Nucleus 2018 Jan;9(1):268-274

a Neuromuscular Unit, Mossakowski Medical Research Centre, Polish Academy of Sciences , Warsaw , Poland.

Emery-Dreifuss muscular dystrophy (EDMD), clinically characterized by scapulo-humero-peroneal muscle atrophy and weakness, multi-joint contractures with spine rigidity and cardiomyopathy with conduction defects, is associated with structural/functional defect of genes that encode the proteins of nuclear envelope, including lamin A and several lamin-interacting proteins. This paper presents clinical aspects of EDMD in context to causative genes, genotype-phenotype correlation and its emplacement within phenotypic spectrum of skeletal muscle diseases associated with envelopathies. Read More

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January 2018
3 Reads

Mechanotransduction, nuclear architecture and epigenetics in Emery Dreifuss Muscular Dystrophy: tous pour un, un pour tous.

Nucleus 2018 Jan;9(1):276-290

a CNR Institute of Cell Biology and Neurobiology, Istituto di Ricovero e Cura a Carattere Scientifico Fondazione Santa Lucia , Rome , Italy.

The alteration of the several roles that Lamin A/C plays in the mammalian cell leads to a broad spectrum of pathologies that - all together - are named laminopathies. Among those, the Emery Dreifuss Muscular Dystrophy (EDMD) is of particular interest as, despite the several known mutations of Lamin A/C, the genotype-phenotype correlation still remains poorly understood; this suggests that the epigenetic background of patients might play an important role during the time course of the disease. Historically, both a mechanical role of Lamin A/C and a regulative one have been suggested as the driving force of laminopathies; however, those two hypotheses are not mutually exclusive. Read More

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January 2018
5 Reads

SMAD6 overexpression leads to accelerated myogenic differentiation of LMNA mutated cells.

Sci Rep 2018 Apr 4;8(1):5618. Epub 2018 Apr 4.

University of Lyon, University of Lyon1 Claude Bernard Lyon1, Institut NeuroMyoGene, CNRS UMR5310, INSERM U1217, Lyon, France.

LMNA gene encodes lamins A and C, two major components of the nuclear lamina, a network of intermediate filaments underlying the inner nuclear membrane. Most of LMNA mutations are associated with cardiac and/or skeletal muscles defects. Muscle laminopathies include Emery-Dreifuss Muscular Dystrophy, Limb-Girdle Muscular Dystrophy 1B, LMNA-related Congenital Muscular Dystrophy and Dilated Cardiomyopathy with conduction defects. Read More

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April 2018
8 Reads

Everolimus rescues multiple cellular defects in laminopathy-patient fibroblasts.

Proc Natl Acad Sci U S A 2018 04 26;115(16):4206-4211. Epub 2018 Mar 26.

Genome Technology Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892;

encodes the A-type lamins that are part of the nuclear scaffold. Mutations in can cause a variety of disorders called laminopathies, including Hutchinson-Gilford progeria syndrome (HGPS), atypical Werner syndrome, and Emery-Dreifuss muscular dystrophy. Previous work has shown that treatment of HGPS cells with the mTOR inhibitor rapamycin or with the rapamycin analog everolimus corrects several of the phenotypes seen at the cellular level-at least in part by increasing autophagy and reducing the amount of progerin, the toxic form of lamin A that is overproduced in HGPS patients. Read More

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April 2018
8 Reads

Invertebrate models of lamin diseases.

Nucleus 2018 Jan;9(1):227-234

a Laboratory of Nuclear Proteins, Faculty of Biotechnology , University of Wroclaw , Fryderyka Joliot-Curie, Wroclaw , Poland.

Lamins are evolutionarily conserved nuclear intermediate filament proteins. They provide structural support for the nucleus and help regulate many other nuclear activities. Mutations in human lamin genes, and especially in the LMNA gene, cause numerous diseases, termed laminopathies, including muscle, cardiac, metabolic, neuronal and early aging diseases. Read More

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January 2018
1 Read

Lamins and Lamin-Associated Proteins in Gastrointestinal Health and Disease.

Gastroenterology 2018 05 13;154(6):1602-1619.e1. Epub 2018 Mar 13.

Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan; Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan; Åbo Akademi University, Turku, Finland.

The nuclear lamina is a multi-protein lattice composed of A- and B-type lamins and their associated proteins. This protein lattice associates with heterochromatin and integral inner nuclear membrane proteins, providing links among the genome, nucleoskeleton, and cytoskeleton. In the 1990s, mutations in EMD and LMNA were linked to Emery-Dreifuss muscular dystrophy. Read More

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May 2018
1 Read

Nesprin-1/2: roles in nuclear envelope organisation, myogenesis and muscle disease.

Biochem Soc Trans 2018 04 27;46(2):311-320. Epub 2018 Feb 27.

King's College London British Heart Foundation Centre of Research Excellence, Cardiovascular Division, James Black Centre, 125 Coldharbour Lane, London SE5 9NU, U.K.

Nesprins (nuclear envelope spectrin repeat proteins) are multi-isomeric scaffolding proteins. Nesprin-1 and -2 are highly expressed in skeletal and cardiac muscles and together with SUN (Sad1p/UNC84) domain-containing proteins form the LInker of Nucleoskeleton and Cytoskeleton (LINC) complex at the nuclear envelope in association with lamin A/C and emerin. Mutations in nesprin-1/2 have been found in patients with autosomal dominant Emery-Dreifuss muscular dystrophy (EDMD) as well as dilated cardiomyopathy (DCM). Read More

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April 2018
4 Reads

ACE inhibition to slow progression of myocardial fibrosis in muscular dystrophies.

Trends Cardiovasc Med 2018 Jul 21;28(5):330-337. Epub 2017 Dec 21.

Chair of Cardiology, University of Campania "Luigi Vanvitelli", Monaldi Hospital, Naples, Italy.

Muscular dystrophy (MD) connotes a heterogeneous group of inherited disordersaffecting skeletal and cardiac muscle. Inseveral forms of MD, the cardiac disease may be the predominant manifestationof the underlying genetic myopathy. The cardiacinvolvement is due to progressive interstitial fibrosis and fatty replacement inboth the atria and ventricles, which may lead to cardiomyopathy, conductiondefects and tachyarrhythmias. Read More

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July 2018
4 Reads
2 Citations
2.910 Impact Factor

A novel de novo mutation in Lamin A/C gene in Emery Dreifuss Muscular Dystrophy patient with atrial paralysis.

J Atr Fibrillation 2017 Apr-May;9(6):1511. Epub 2017 Apr 30.

Department of Cardiology and Vascular Medicine Dr. Hasan Sadikin Hospital, Bandung, Indonesia. Jl. Pasteur No. 38 Bandung 40161, Indonesia.

We present a 26 year old female Indonesian patient with full spectrum Emery Dreifuss Muscular Dystrophy (EDMD) characterized with contracture of elbows, heel cord and pelvic muscle wasting and weakness and atrial paralysis, as rare cardiac findings in EDMD . A novel de novo pathogenic heterozygous missense mutation (NM_170707.3: c. Read More

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April 2017
9 Reads

Dilated cardiomyopathy with severe arrhythmias in Emery-Dreifuss muscular dystrophy: from ablation to heart transplantation.

J Atr Fibrillation 2016 Dec 31;9(4):1468. Epub 2016 Dec 31.

We present 38-years male patient. He has suffered from muscle weakness since 5 years. Arrhythmias appeared at the age of 32. Read More

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December 2016
9 Reads

Correlating motor unit morphology with bioelectrical activity - A simulation study.

Clin Neurophysiol 2018 01 16;129(1):271-279. Epub 2017 Nov 16.

Neuromuscular Unit, Mossakowski Medical Research Center, Polish Academy of Sciences, 02-106 Warsaw, Pawinskiego 5, Poland.

Objectives: The aim was to determine motor unit morphology underpinning the various MUP waveforms using MUP analysis.

Method: The simulation method is based on the decomposition of MUP into single fiber potentials. Number of fibers, fiber diameters and fiber to electrode distances were determined. Read More

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January 2018
6 Reads

Spindle associated membrane protein 1 (Samp1) is required for the differentiation of muscle cells.

Sci Rep 2017 Nov 30;7(1):16655. Epub 2017 Nov 30.

Department of Neurochemistry, Stockholm University, Svante Arrhenius väg 16B, SE-106 91, Stockholm, Sweden.

Muscles are developed and regenerated in a differentiation process called myogenesis, which involves components of the nuclear envelope. We have investigated Samp1 (Spindle Associated Membrane Protein 1), a transmembrane nuclear envelope protein, which interacts with emerin and lamin A, both of which are linked to Emery-Dreifuss muscular dystrophy (EDMD). We found that the levels of Samp1 increased seven-fold during differentiation of mouse C2C12 muscle progenitor cells. Read More

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November 2017
4 Reads

LMO7 exerts an effect on mitosis progression and the spindle assembly checkpoint.

Int J Biochem Cell Biol 2018 01 20;94:22-30. Epub 2017 Nov 20.

Institute of Medical Sciences, Tzu-Chi University, Hualien 97004, Taiwan; Institute of Biomedical Sciences, Mackay Medical College, New Taipei City 25245, Taiwan. Electronic address:

LMO7 (LIM domain only 7) is a transcription regulator for expression of many Emery-Dreifuss muscular dystrophy-relevant genes, and binds to α-actinin and AF6/afadin at adherens junctions for epithelial cell-cell adhesion. In this study, we found that human LMO7 interacted with the spindle assembly checkpoint (SAC) protein MAD1. LMO7 colocalized with actin filaments at the cell membrane but did not colocalize with MAD1 at kinetochores in prometaphase. Read More

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January 2018
2 Reads

Expression Profiling of Differentiating Emerin-Null Myogenic Progenitor Identifies Molecular Pathways Implicated in Their Impaired Differentiation.

Cells 2017 Oct 22;6(4). Epub 2017 Oct 22.

Department of Biomedical Sciences, Rm 534, Cooper Medical School of Rowan University, 401 South Broadway St., Camden, NJ 08028, USA.

Mutations in the gene encoding emerin cause Emery-Dreifuss muscular dystrophy (EDMD), a disorder causing progressive skeletal muscle wasting, irregular heart rhythms and contractures of major tendons. RNA sequencing was performed on differentiating wildtype and emerin-null myogenic progenitors to identify molecular pathways implicated in EDMD, 340 genes were uniquely differentially expressed during the transition from day 0 to day 1 in wildtype cells. 1605 genes were uniquely expressed in emerin-null cells; 1706 genes were shared among both wildtype and emerin-null cells. Read More

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October 2017
7 Reads

Early-Onset LMNA-Associated Muscular Dystrophy with Later Involvement of Contracture.

J Clin Neurol 2017 Oct;13(4):405-410

Department of Neurology, Yonsei University College of Medicine, Seoul, Korea.

Background And Purpose: The early diagnosis of LMNA-associated muscular dystrophy is important for preventing sudden arrest related to cardiac conduction block. However, diagnosing early-onset Emery-Dreifuss muscular dystrophy (EDMD) with later involvement of contracture and limb-girdle muscular dystrophy type 1B is often delayed due to heterogeneous clinical presentations. We aimed to determine the clinical features that contribute to a delayed diagnosis. Read More

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October 2017
10 Reads

Low-symptomatic skeletal muscle disease in patients with a cardiac disease - Diagnostic approach in skeletal muscle laminopathies.

Neurol Neurochir Pol 2018 Mar 25;52(2):174-180. Epub 2017 Sep 25.

1st Department of Cardiology, Medical University of Warsaw, Banacha 1a, Warsaw, Poland.

Mild skeletal muscle symptoms might be accompanied with severe cardiac disease, sometimes indicating a serious inherited disorder. Very often it is a cardiologist who refers a patient with cardiomyopathy and/or cardiac arrhythmia and discrete muscle disease for neurological consultation, which helps to establish a proper diagnosis. Here we present three families in which a diagnosis of skeletal muscle laminopathy was made after careful examination of the members, who presented with cardiac arrhythmia and/or heart failure and a mild skeletal muscle disease, which together with positive family history allowed to direct the molecular diagnostics and then provide appropriate treatment and counseling. Read More

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March 2018
8 Reads

Dysfunctional lamins as mediators of oxidative stress in Emery-Dreifuss muscular dystrophy.

Folia Neuropathol 2017 ;55(3):193-198

Deficit of lamin A/C or emerin causes genetically transmitted Emery-Dreifuss muscular dystrophy (EDMD). As lamins are considered to be mediators of oxidative stress, the antioxidant/oxidant status was examined. The total oxidant/antioxidant status in serum was examined in 29 cases of Emery-Dreifuss muscular dystrophy. Read More

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September 2018
5 Reads

Global muscular dystrophy research: A 25-year bibliometric perspective.

Authors:
Shri Ram

Neurol India 2017 Sep-Oct;65(5):993-1000

Central Library, Thapar University, Patiala, Punjab, India.

Muscular dystrophy is a genetic disorder leading to progressive weakness of muscles caused due to dysfunction in or lack of protein in muscle cells. The prevalence of muscular dystrophy has been observed globally and is becoming a critical area of study for better health services. The purpose of the study is to analyze the research strength of muscular dystrophy using bibliographic literature. Read More

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September 2017
4 Reads

Anti-cardiac troponin antibodies in clinical human disease: a systematic review.

Ann Transl Med 2017 Aug;5(15):307

Centro Hospitalar São João, Porto, Portugal.

Anti-cardiac troponin antibodies have been studied in different types of clinical diseases and in healthy populations. A systematic review of published data on anti-troponin antibodies was carried out (search performed on PubMed, ISI Web of Knowledge and Scopus databases). From title and abstract analysis, thirty-three articles were included that met the pre-specified criteria; after full-text analysis, nine articles were excluded. Read More

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August 2017
27 Reads

Management of Cardiac Involvement Associated With Neuromuscular Diseases: A Scientific Statement From the American Heart Association.

Circulation 2017 Sep 24;136(13):e200-e231. Epub 2017 Aug 24.

For many neuromuscular diseases (NMDs), cardiac disease represents a major cause of morbidity and mortality. The management of cardiac disease in NMDs is made challenging by the broad clinical heterogeneity that exists among many NMDs and by limited knowledge about disease-specific cardiovascular pathogenesis and course-modifying interventions. The overlay of compromise in peripheral muscle function and other organ systems, such as the lungs, also makes the simple application of endorsed adult or pediatric heart failure guidelines to the NMD population problematic. Read More

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September 2017
17 Reads

Possible local anesthetic resistance in Emery-Dreifuss muscular dystrophy during regional anesthesia.

Korean J Anesthesiol 2017 Aug 28;70(4):477-478. Epub 2017 Apr 28.

Department of Anesthesiology, Perioperative and Pain Medicine, Yale School of Medicine, New Haven, CT, USA.

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August 2017
9 Reads

Emery-Dreifuss muscular dystrophy-linked genes and centronuclear myopathy-linked genes regulate myonuclear movement by distinct mechanisms.

Mol Biol Cell 2017 Aug 21;28(17):2303-2317. Epub 2017 Jun 21.

Biology Department, Boston College, Chestnut Hill, MA 02467

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, we disrupted the expression of genes linked to Emery-Dreifuss muscular dystrophy (EDMD) and centronuclear myopathy (CNM) in and evaluated the position of the nuclei. Read More

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August 2017
12 Reads

A novel SYNE1 gene mutation in a Chinese family of Emery-Dreifuss muscular dystrophy-like.

BMC Med Genet 2017 06 5;18(1):63. Epub 2017 Jun 5.

Department of Neurology, People's Hospital of Zhengzhou University, No. 7 Weiwu Road, Zhengzhou, Henan, 450003, China.

Background: In the present study, a novel mutation in exon 46 at codon 2304 (G2304R) of the SYNE1 gene is described in a Chinese family (proband, mother, and sister) with Emery-Dreifuss muscular dystrophy-like, which clinically manifests as muscle weakness, muscle atrophy, joint contracture, and without significant cardiac abnormalities.

Methods: Clinical examination and neuroimaging of the captured target region and high-throughput sequencing were performed in a family of four generations. Muscle changes were evaluated using magnetic resonance imaging and muscle biopsies. Read More

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June 2017
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Emery-Dreifuss Muscular Dystrophy-Associated Mutant Forms of Lamin A Recruit the Stress Responsive Protein Ankrd2 into the Nucleus, Affecting the Cellular Response to Oxidative Stress.

Cell Physiol Biochem 2017 25;42(1):169-184. Epub 2017 May 25.

Institute of Molecular Genetics (IGM)-CNR, Unit of Bologna, Bologna, Italy.

Background: Ankrd2 is a stress responsive protein mainly expressed in muscle cells. Upon the application of oxidative stress, Ankrd2 translocates into the nucleus where it regulates the activity of genes involved in cellular response to stress. Emery-Dreifuss Muscular Dystrophy 2 (EDMD2) is a muscular disorder caused by mutations of the gene encoding lamin A, LMNA. Read More

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July 2017
37 Reads

Novel nesprin-1 mutations associated with dilated cardiomyopathy cause nuclear envelope disruption and defects in myogenesis.

Hum Mol Genet 2017 06;26(12):2258-2276

King's College London British Heart Foundation Centre of Research Excellence, Cardiovascular Division, London SE5?9NU, UK.

Nesprins-1 and -2 are highly expressed in skeletal and cardiac muscle and together with SUN (Sad1p/UNC84)-domain containing proteins and lamin A/C form the LInker of Nucleoskeleton-and-Cytoskeleton (LINC) bridging complex at the nuclear envelope (NE). Mutations in nesprin-1/2 have previously been found in patients with autosomal dominant Emery-Dreifuss muscular dystrophy (EDMD) as well as dilated cardiomyopathy (DCM). In this study, three novel rare variants (R8272Q, S8381C and N8406K) in the C-terminus of the SYNE1 gene (nesprin-1) were identified in seven DCM patients by mutation screening. Read More

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June 2017
36 Reads

Lamin A/C Cardiomyopathies: Current Understanding and Novel Treatment Strategies.

Curr Treat Options Cardiovasc Med 2017 Mar;19(3):21

Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland, OH, USA.

Opinion Statement: Dilated cardiomyopathy (DCM) is the third leading cause of heart failure in the USA. A major gene associated with DCM with cardiac conduction system disease is lamin A/C (LMNA) gene. Lamins are type V filaments that serve a variety of roles, including nuclear structure support, DNA repair, cell signaling pathway mediation, and chromatin organization. Read More

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March 2017
7 Reads
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