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McKaige EA, Lee C, Calcinotto V, Giri S, Crawford S, McGrath MJ, Ramm G, Bryson-Richardson RJ. Mitochondrial abnormalities contribute to muscle weakness in a Dnajb6 deficient zebrafish model. Hum Mol Genet 2024:ddae061. [PMID: 38621658 DOI: 10.1093/hmg/ddae061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 02/28/2024] [Accepted: 03/28/2024] [Indexed: 04/17/2024] Open
Abstract
Mutations in DNAJB6 are a well-established cause of limb girdle muscular dystrophy type D1 (LGMD D1). Patients with LGMD D1 develop progressive muscle weakness with histology showing fibre damage, autophagic vacuoles, and aggregates. Whilst there are many reports of LGMD D1 patients, the role of DNAJB6 in the muscle is still unclear. In this study, we developed a loss of function zebrafish model in order to investigate the role of Dnajb6. Using a double dnajb6a and dnajb6b mutant model, we show that loss of Dnajb6 leads to a late onset muscle weakness. Interestingly, we find that adult fish lacking Dnajb6 do not have autophagy or myofibril defects, however, they do show mitochondrial changes and damage. This study demonstrates that loss of Dnajb6 causes mitochondrial defects and suggests that this contributes to muscle weakness in LGMD D1. These findings expand our knowledge of the role of Dnajb6 in the muscle and provides a model to screen novel therapies for LGMD D1.
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Affiliation(s)
- Emily A McKaige
- School of Biological Sciences Monash University, 25 Rainforest Walk, Clayton, VIC 3800, Australia
| | - Clara Lee
- School of Biological Sciences Monash University, 25 Rainforest Walk, Clayton, VIC 3800, Australia
| | - Vanessa Calcinotto
- School of Biological Sciences Monash University, 25 Rainforest Walk, Clayton, VIC 3800, Australia
| | - Saveen Giri
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, 23 Innovation Walk, Clayton, VIC 3800, Australia
| | - Simon Crawford
- Monash Ramaciotti Centre for Cryo Electron Microscopy, Monash University, 15 Innovation Walk, Clayton, VIC 3800, Australia
| | - Meagan J McGrath
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, 23 Innovation Walk, Clayton, VIC 3800, Australia
| | - Georg Ramm
- Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, 23 Innovation Walk, Clayton, VIC 3800, Australia
- Monash Ramaciotti Centre for Cryo Electron Microscopy, Monash University, 15 Innovation Walk, Clayton, VIC 3800, Australia
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2
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Distinctive chaperonopathy in skeletal muscle associated with the dominant variant in DNAJB4. Acta Neuropathol 2023; 145:235-255. [PMID: 36512060 DOI: 10.1007/s00401-022-02530-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 11/15/2022] [Accepted: 12/07/2022] [Indexed: 12/15/2022]
Abstract
DnaJ homolog, subfamily B, member 4, a member of the heat shock protein 40 chaperones encoded by DNAJB4, is highly expressed in myofibers. We identified a heterozygous c.270 T > A (p.F90L) variant in DNAJB4 in a family with a dominantly inherited distal myopathy, in which affected members have specific features on muscle pathology represented by the presence of cytoplasmic inclusions and the accumulation of desmin, p62, HSP70, and DNAJB4 predominantly in type 1 fibers. Both Dnajb4F90L knockin and knockout mice developed muscle weakness and recapitulated the patient muscle pathology in the soleus muscle, where DNAJB4 has the highest expression. These data indicate that the identified variant is causative, resulting in defective chaperone function and selective muscle degeneration in specific muscle fibers. This study demonstrates the importance of DNAJB4 in skeletal muscle proteostasis by identifying the associated chaperonopathy.
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3
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Savarese M, Jokela M, Udd B. Distal myopathy. HANDBOOK OF CLINICAL NEUROLOGY 2023; 195:497-519. [PMID: 37562883 DOI: 10.1016/b978-0-323-98818-6.00002-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Distal myopathies are a group of genetic, primary muscle diseases. Patients develop progressive weakness and atrophy of the muscles of forearm, hands, lower leg, or feet. Currently, over 20 different forms, presenting a variable age of onset, clinical presentation, disease progression, muscle involvement, and histological findings, are known. Some of them are dominant and some recessive. Different variants in the same gene are often associated with either dominant or recessive forms, although there is a lack of a comprehensive understanding of the genotype-phenotype correlations. This chapter provides a description of the clinicopathologic and genetic aspects of distal myopathies emphasizing known etiologic and pathophysiologic mechanisms.
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Affiliation(s)
- Marco Savarese
- Folkhälsan Research Center, Helsinki, Finland; Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Manu Jokela
- Neuromuscular Research Center, Department of Neurology, Tampere University and University Hospital, Tampere, Finland; Division of Clinical Neurosciences, Department of Neurology, Turku University Hospital, Turku, Finland
| | - Bjarne Udd
- Folkhälsan Research Center, Helsinki, Finland; Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland; Neuromuscular Research Center, Department of Neurology, Tampere University and University Hospital, Tampere, Finland; Department of Neurology, Vaasa Central Hospital, Vaasa, Finland.
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4
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Pilania K, Jankharia B. Role of MRI in idiopathic inflammatory myopathies: a review article. Acta Radiol 2022; 63:200-213. [PMID: 33554607 DOI: 10.1177/0284185121990305] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Idiopathic inflammatory myopathies are a rare heterogeneous group of chronic, autoimmune conditions characterized by the slow, progressive weakness of the skeletal muscles and inflammatory infiltrates in the muscle tissue. The predominant role of magnetic resonance imaging (MRI) in myositis imaging is to assess disease activity and to identify the target site for biopsy. Its role in phenotyping the disease is less explored. The aim of the present review was to examine the role of MRI in differentiating between the common inflammatory myopathies, i.e. dermatomyositis, polymyositis, and sporadic inclusion body myositis, and to describe the specific spectrum of MRI findings in various inflammatory myopathies.
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5
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Verdú-Díaz J, Alonso-Pérez J, Nuñez-Peralta C, Tasca G, Vissing J, Straub V, Fernández-Torrón R, Llauger J, Illa I, Díaz-Manera J. Accuracy of a machine learning muscle MRI-based tool for the diagnosis of muscular dystrophies. Neurology 2020; 94:e1094-e1102. [PMID: 32029545 DOI: 10.1212/wnl.0000000000009068] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 10/03/2019] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE Genetic diagnosis of muscular dystrophies (MDs) has classically been guided by clinical presentation, muscle biopsy, and muscle MRI data. Muscle MRI suggests diagnosis based on the pattern of muscle fatty replacement. However, patterns overlap between different disorders and knowledge about disease-specific patterns is limited. Our aim was to develop a software-based tool that can recognize muscle MRI patterns and thus aid diagnosis of MDs. METHODS We collected 976 pelvic and lower limbs T1-weighted muscle MRIs from 10 different MDs. Fatty replacement was quantified using Mercuri score and files containing the numeric data were generated. Random forest supervised machine learning was applied to develop a model useful to identify the correct diagnosis. Two thousand different models were generated and the one with highest accuracy was selected. A new set of 20 MRIs was used to test the accuracy of the model, and the results were compared with diagnoses proposed by 4 specialists in the field. RESULTS A total of 976 lower limbs MRIs from 10 different MDs were used. The best model obtained had 95.7% accuracy, with 92.1% sensitivity and 99.4% specificity. When compared with experts on the field, the diagnostic accuracy of the model generated was significantly higher in a new set of 20 MRIs. CONCLUSION Machine learning can help doctors in the diagnosis of muscle dystrophies by analyzing patterns of muscle fatty replacement in muscle MRI. This tool can be helpful in daily clinics and in the interpretation of the results of next-generation sequencing tests. CLASSIFICATION OF EVIDENCE This study provides Class II evidence that a muscle MRI-based artificial intelligence tool accurately diagnoses muscular dystrophies.
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Affiliation(s)
- José Verdú-Díaz
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain
| | - Jorge Alonso-Pérez
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain
| | - Claudia Nuñez-Peralta
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain
| | - Giorgio Tasca
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain
| | - John Vissing
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain
| | - Volker Straub
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain
| | - Roberto Fernández-Torrón
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain
| | - Jaume Llauger
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain
| | - Isabel Illa
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain
| | - Jordi Díaz-Manera
- From the Neuromuscular Disorders Unit, Neurology Department (J.V.-D., J.A.-P., I.I., J.D.-M.), and Radiology Department (C.N.-P., J.L.), Hospital de la Santa Creu I Sant Pau, Barcelona, Spain; UOC di Neurologia (G.T.), Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Copenhagen Neuromuscular Center, Department of Neurology (J.V.), Rigshospitalet, University of Copenhagen, Denmark; John Walton Muscular Dystrophy Research Centre (V.S., J.D.-M.), University of Newcastle, Newcastle Upon Tyne, UK; Hospital Universitario Donostia (R.F.-T.); and Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER) (I.I., J.D.-M.), Madrid, Spain.
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6
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Alonso-Jimenez A, Kroon RHMJM, Alejaldre-Monforte A, Nuñez-Peralta C, Horlings CGC, van Engelen BGM, Olivé M, González L, Verges-Gil E, Paradas C, Márquez C, Garibaldi M, Gallano P, Rodriguez MJ, Gonzalez-Quereda L, Dominguez Gonzalez C, Vissing J, Fornander F, Eisum ASV, García-Sobrino T, Pardo J, García-Figueiras R, Muelas N, Vilchez JJ, Kapetanovic S, Tasca G, Monforte M, Ricci E, Gomez MT, Bevilacqua JA, Diaz-Jara J, Zamorano II, Carlier RY, Laforet P, Pelayo-Negro A, Ramos-Fransi A, Martínez A, Marini-Bettolo C, Straub V, Gutiérrez G, Stojkovic T, Martín MA, Morís G, Fernández-Torrón R, Lopez De Munaín A, Cortes-Vicente E, Querol L, Rojas-García R, Illa I, Diaz-Manera J. Muscle MRI in a large cohort of patients with oculopharyngeal muscular dystrophy. J Neurol Neurosurg Psychiatry 2019; 90:576-585. [PMID: 30530568 DOI: 10.1136/jnnp-2018-319578] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 11/13/2018] [Accepted: 11/19/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND OBJECTIVE Oculopharyngeal muscular dystrophy (OPMD) is a genetic disorder caused by an abnormal expansion of GCN triplets within the PABPN1 gene. Previous descriptions have focused on lower limb muscles in small cohorts of patients with OPMD, but larger imaging studies have not been performed. Previous imaging studies have been too small to be able to correlate imaging findings to genetic and clinical data. METHODS We present cross-sectional, T1-weighted muscle MRI and CT-scan data from 168 patients with genetically confirmed OPMD. We have analysed the pattern of muscle involvement in the disease using hierarchical analysis and presented it as heatmaps. Results of the scans were correlated with genetic and clinical data. RESULTS Fatty replacement was identified in 96.7% of all symptomatic patients. The tongue, the adductor magnus and the soleus were the most commonly affected muscles. Muscle pathology on MRI correlated positively with disease duration and functional impairment. CONCLUSIONS We have described a pattern that can be considered characteristic of OPMD. An early combination of fat replacement in the tongue, adductor magnus and soleus can be helpful for differential diagnosis. The findings suggest the natural history of the disease from a radiological point of view. The information generated by this study is of high diagnostic value and important for clinical trial development.
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Affiliation(s)
- Alicia Alonso-Jimenez
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain
| | | | | | | | - Corinne G C Horlings
- Neurology Department, Radboud university Medical Center, Nijmegen, The Netherlands
| | | | - Montse Olivé
- Pathology Department (Neuropathology), Neuromuscular Disorders Unit, IDIBELL, Hospital de Bellvitge, Barcelona, Spain
| | - Laura González
- Pathology Department (Neuropathology), Neuromuscular Disorders Unit, IDIBELL, Hospital de Bellvitge, Barcelona, Spain
| | - Enric Verges-Gil
- Pathology Department (Neuropathology), Neuromuscular Disorders Unit, IDIBELL, Hospital de Bellvitge, Barcelona, Spain
| | - Carmen Paradas
- Neuromuscular Disorders Unit, Neurology Department, Hospital Universitario Virgen del Rocío, Instituto de Biomedicina de Sevilla, Sevilla, Spain
| | - Celedonio Márquez
- Neuromuscular Disorders Unit, Neurology Department, Hospital Universitario Virgen del Rocío, Instituto de Biomedicina de Sevilla, Sevilla, Spain
| | - Matteo Garibaldi
- Neuromuscular Disorders Unit, Department of Neurology, Mental Health and Sensory Organs (NESMOS), SAPIENZA University of Rome, Ospedale Sant'Andrea, Rome, Italy
| | - Pía Gallano
- Genetic Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.,Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain
| | | | - Lidia Gonzalez-Quereda
- Genetic Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.,Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain
| | - Cristina Dominguez Gonzalez
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain.,Neuromuscular Disorders Unit, Neurology Department, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - John Vissing
- Copenhagen Neuromuscular Center, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Freja Fornander
- Copenhagen Neuromuscular Center, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Anne-Sofie Vibæk Eisum
- Copenhagen Neuromuscular Center, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | | | - Julio Pardo
- Neurology Department, Hospital Clínico, Santiago de Compostela, Spain
| | | | - Nuria Muelas
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain.,Neuromuscular Research Unit, Neurology Department, Instituto de Investigación Sanitaria la Fe, Hospital Universitari i Politécnic La Fe, Valencia, Spain
| | - Juan Jesús Vilchez
- Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain.,Neuromuscular Research Unit, Neurology Department, Instituto de Investigación Sanitaria la Fe, Hospital Universitari i Politécnic La Fe, Valencia, Spain
| | | | - Giorgio Tasca
- Unità Operativa Complessa di Neurologia, Fondazione Policlinico Universitario A, Gemelli IRCCS, Roem, Italy
| | - Mauro Monforte
- Unità Operativa Complessa di Neurologia, Fondazione Policlinico Universitario A, Gemelli IRCCS, Roem, Italy.,Istituto di Neurologia, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Enzo Ricci
- Unità Operativa Complessa di Neurologia, Fondazione Policlinico Universitario A, Gemelli IRCCS, Roem, Italy.,Istituto di Neurologia, Università Cattolica del Sacro Cuore, Rome, Italy
| | - María Teresa Gomez
- Neurology Department, Hospital Universitario Reina Sofía, Córdoba, Spain
| | - Jorge Alfredo Bevilacqua
- Departamento de Neurología y Neurocirugía, Hospital Clínico Universidad de Chile, Programa de Anatomía y Medicina Legal, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Jorge Diaz-Jara
- Centro de imagenología, Hospital Clínico Universidad de Chile, Universidad de Chile, Santiago, Chile
| | - Ivonne Ingrid Zamorano
- Servicio de Neurología, Hospital de Puerto Montt, Servicio de Salud del Reloncavi, Los Lagos Region, Chile
| | - Robert Yves Carlier
- Assistance Publique des Hôpitaux de Paris (AP-HP), Service d'Imagerie Médicale, Pôle Neuro-locomoteur, Hôpital Raymond Poincaré, Garches, Hôpitaux Universitaires Paris-Ile-de-France Ouest, Garches, France
| | - Pascal Laforet
- Assistance Publique des Hôpitaux de Paris (AP-HP), Service de neurologie, Pôle Neuro-locomoteur, Hôpital Raymond Poincaré, Garches, Hôpitaux Universitaires Paris-Ile-de-France Ouest, Garches, France
| | - Ana Pelayo-Negro
- Neurology Department, University Hospital "Marqués de Valdecilla (IDIVAL)", University of Cantabria, and "Centro de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED)", Santander, Spain
| | - Alba Ramos-Fransi
- Neurology Department, Hospital Germans Trias I Pujol, Barcelona, Spain
| | | | - Chiara Marini-Bettolo
- The John Walton Muscular Dystrophy Research Centre, MRC Centre for Neuromuscular Diseases Institute of Genetic Medicine, University of Newcastle, Newcastle upon Tyne, UK
| | - Volker Straub
- The John Walton Muscular Dystrophy Research Centre, MRC Centre for Neuromuscular Diseases Institute of Genetic Medicine, University of Newcastle, Newcastle upon Tyne, UK
| | - Gerardo Gutiérrez
- Neurology Department, Hospital Infanta Sofía, San Sebastián de los Reyes, Spain
| | - Tanya Stojkovic
- Institute of Myology, Pitié-Salpêtrière Hospital, Paris, France
| | | | - Germán Morís
- Neurology Department, Hospital Universitario Central de Asturias, Asturias, Spain
| | - Roberto Fernández-Torrón
- Neurology Department, Hospital Donostia, San Sebastián, Spain.,Neuromuscular Area, Neurology Service, Biodonostia Health Research Institute, Donostia University Hospital, Donostia-San Sebastián, Spain
| | - Adolfo Lopez De Munaín
- Neurology Department, Hospital Donostia, San Sebastián, Spain.,Neuromuscular Area, Neurology Service, Biodonostia Health Research Institute, Donostia University Hospital, Donostia-San Sebastián, Spain
| | - Elena Cortes-Vicente
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain
| | - Luis Querol
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain
| | - Ricardo Rojas-García
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain
| | - Isabel Illa
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain
| | - Jordi Diaz-Manera
- Neuromuscular Disorders Unit, Neurology Department, Hospital de la Santa Creu I Sant Pau, Universidad Autónoma de Barcelona, Barcelona, Spain .,Centro de Investigación Biomédica en Red en Enfermedades Raras (CIBERER), Valencia, Spain
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7
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Intrafamilial variability of limb-girdle muscular dystrophy, LGMD1D type. Eur J Med Genet 2019; 63:103655. [PMID: 31034989 DOI: 10.1016/j.ejmg.2019.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 04/12/2019] [Accepted: 04/21/2019] [Indexed: 12/20/2022]
Abstract
LGMD1D is an autosomal dominant limb girdle muscular dystrophy caused by variants in the DNAJB6 gene. This is typically an adult-onset disorder characterized by moderately progressive proximal muscle weakness without respiratory or bulbar involvement; however phenotypic variability is often observed with some individuals having earlier onset and more severe symptoms. Here, we present a family with a novel NM_005494.2:c.271T > G p.(Phe91Val) variant in DNAJB6 with a late-onset, mild and slowly progressive form of the disease, including one individual, who in her 7th decade of life has subclinical LGMD1D with only mild features on muscle biopsy and MRI. Unlike previously reported cases where missense variants affecting the Phe91 amino acid residue are associated with a more severe form of the disease, this family represents the mild end of the LGMD1D clinical spectrum. Therefore, this family adds further complexity to the genotype-phenotype correlation in DNAJB6-associated muscular dystrophies.
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8
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Paoletti M, Pichiecchio A, Cotti Piccinelli S, Tasca G, Berardinelli AL, Padovani A, Filosto M. Advances in Quantitative Imaging of Genetic and Acquired Myopathies: Clinical Applications and Perspectives. Front Neurol 2019; 10:78. [PMID: 30804884 PMCID: PMC6378279 DOI: 10.3389/fneur.2019.00078] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 01/21/2019] [Indexed: 12/11/2022] Open
Abstract
In the last years, magnetic resonance imaging (MRI) has become fundamental for the diagnosis and monitoring of myopathies given its ability to show the severity and distribution of pathology, to identify specific patterns of damage distribution and to properly interpret a number of genetic variants. The advances in MR techniques and post-processing software solutions have greatly expanded the potential to assess pathological changes in muscle diseases, and more specifically of myopathies; a number of features can be studied and quantified, ranging from composition, architecture, mechanical properties, perfusion, and function, leading to what is known as quantitative MRI (qMRI). Such techniques can effectively provide a variety of information beyond what can be seen and assessed by conventional MR imaging; their development and application in clinical practice can play an important role in the diagnostic process and in assessing disease course and treatment response. In this review, we briefly discuss the current role of muscle MRI in diagnosing muscle diseases and describe in detail the potential and perspectives of the application of advanced qMRI techniques in this field.
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Affiliation(s)
- Matteo Paoletti
- Neuroradiology Department, IRCCS Mondino Foundation, Pavia, Italy.,Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
| | - Anna Pichiecchio
- Neuroradiology Department, IRCCS Mondino Foundation, Pavia, Italy.,Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
| | - Stefano Cotti Piccinelli
- Unit of Neurology, Center for Neuromuscular Diseases, ASST Spedali Civili and University of Brescia, Brescia, Italy
| | - Giorgio Tasca
- Neurology Department, Dipartimento di Scienze dell'Invecchiamento, Neurologiche, Ortopediche e della Testa-Collo, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | | | - Alessandro Padovani
- Unit of Neurology, Center for Neuromuscular Diseases, ASST Spedali Civili and University of Brescia, Brescia, Italy
| | - Massimiliano Filosto
- Unit of Neurology, Center for Neuromuscular Diseases, ASST Spedali Civili and University of Brescia, Brescia, Italy
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9
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Jonson PH, Palmio J, Johari M, Penttilä S, Evilä A, Nelson I, Bonne G, Wiart N, Meyer V, Boland A, Deleuze JF, Masson C, Stojkovic T, Chapon F, Romero NB, Solé G, Ferrer X, Ferreiro A, Hackman P, Richard I, Udd B. Novel mutations in DNAJB6
cause LGMD1D and distal myopathy in French families. Eur J Neurol 2018; 25:790-794. [DOI: 10.1111/ene.13598] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 01/19/2018] [Indexed: 01/24/2023]
Affiliation(s)
- P. H. Jonson
- Folkhälsan Institute of Genetics; University of Helsinki, Medicum; Helsinki Finland
| | - J. Palmio
- Neuromuscular Research Center; Tampere University Hospital; University of Tampere; Tampere Finland
| | - M. Johari
- Folkhälsan Institute of Genetics; University of Helsinki, Medicum; Helsinki Finland
| | - S. Penttilä
- Neuromuscular Research Center; Tampere University Hospital; University of Tampere; Tampere Finland
| | - A. Evilä
- Folkhälsan Institute of Genetics; University of Helsinki, Medicum; Helsinki Finland
| | - I. Nelson
- UPMC Univ Paris 06; INSERM UMRS 974; Center of Research in Myology; Institut de Myologie; Sorbonne Universités; Paris France
| | - G. Bonne
- UPMC Univ Paris 06; INSERM UMRS 974; Center of Research in Myology; Institut de Myologie; Sorbonne Universités; Paris France
| | - N. Wiart
- Centre National de Recherche en Génomique Humaine (CNRGH); CEA; Evry France
| | - V. Meyer
- Centre National de Recherche en Génomique Humaine (CNRGH); CEA; Evry France
| | - A. Boland
- Centre National de Recherche en Génomique Humaine (CNRGH); CEA; Evry France
| | - J.-F. Deleuze
- Centre National de Recherche en Génomique Humaine (CNRGH); CEA; Evry France
| | - C. Masson
- Bioinformatics Core Facility; INSERM US24/CNRS UMS3633; INSERM UMR 1163; Institut Imagine; Université Paris Descartes − Structure Fédérative de Recherche Necker; Paris France
| | - T. Stojkovic
- UPMC Univ Paris 06; INSERM UMRS 974; Center of Research in Myology; Institut de Myologie; Sorbonne Universités; Paris France
| | - F. Chapon
- INSERM U1075; Neuromuscular Competence Center; CHU Caen; Université de Normandie; Caen France
| | - N. B. Romero
- Unit of Neuromuscular Morphology; Institute of Myology; UPMC Paris 6; INSERM UMRS 974; Pitié-Salpêtrière Hospital; Paris France
| | - G. Solé
- Neuromuscular Reference Center; CHU Bordeaux; Bordeaux France
| | - X. Ferrer
- Neuromuscular Reference Center; CHU Bordeaux; Bordeaux France
| | - A. Ferreiro
- Unité de Biologie Fonctionnelle et Adaptative; Université Paris Diderot/CNRS; Paris France
- Reference Center for Neuromuscular Disorders; Pitié-Salpêtrière Hospital; AP-HP; Paris France
| | - P. Hackman
- Folkhälsan Institute of Genetics; University of Helsinki, Medicum; Helsinki Finland
| | - I. Richard
- Généthon INSERM; U951; INTEGRARE Research Unit; University Paris-Saclay; Evry France
| | - B. Udd
- Folkhälsan Institute of Genetics; University of Helsinki, Medicum; Helsinki Finland
- Neuromuscular Research Center; Tampere University Hospital; University of Tampere; Tampere Finland
- Department of Neurology; Vaasa Central Hospital; Vaasa Finland
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10
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Tasca G, Monforte M, Díaz-Manera J, Brisca G, Semplicini C, D'Amico A, Fattori F, Pichiecchio A, Berardinelli A, Maggi L, Maccagnano E, Løkken N, Marini-Bettolo C, Munell F, Sanchez A, Alshaikh N, Voermans NC, Dastgir J, Vlodavets D, Haberlová J, Magnano G, Walter MC, Quijano-Roy S, Carlier RY, van Engelen BGM, Vissing J, Straub V, Bönnemann CG, Mercuri E, Muntoni F, Pegoraro E, Bertini E, Udd B, Ricci E, Bruno C. MRI in sarcoglycanopathies: a large international cohort study. J Neurol Neurosurg Psychiatry 2018; 89:72-77. [PMID: 28889091 DOI: 10.1136/jnnp-2017-316736] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 08/22/2017] [Accepted: 08/23/2017] [Indexed: 11/04/2022]
Abstract
OBJECTIVES To characterise the pattern and spectrum of involvement on muscle MRI in a large cohort of patients with sarcoglycanopathies, which are limb-girdle muscular dystrophies (LGMD2C-2F) caused by mutations in one of the four genes coding for muscle sarcoglycans. METHODS Lower limb MRI scans of patients with LGMD2C-2F, ranging from severe childhood variants to milder adult-onset forms, were collected in 17 neuromuscular referral centres in Europe and USA. Muscle involvement was evaluated semiquantitatively on T1-weighted images according to a visual score, and the global pattern was assessed as well. RESULTS Scans from 69 patients were examined (38 LGMD2D, 18 LGMD2C, 12 LGMD2E and 1 LGMD2F). A common pattern of involvement was found in all the analysed scans irrespective of the mutated gene. The most and earliest affected muscles were the thigh adductors, glutei and posterior thigh groups, while lower leg muscles were relatively spared even in advanced disease. A proximodistal gradient of involvement of vasti muscles was a consistent finding in these patients, including the most severe ones. CONCLUSIONS Muscle involvement on MRI is consistent in patients with LGMD2C-F and can be helpful in distinguishing sarcoglycanopathies from other LGMDs or dystrophinopathies, which represent the most common differential diagnoses. Our data provide evidence about selective susceptibility or resistance to degeneration of specific muscles when one of the sarcoglycans is deficient, as well as preliminary information about progressive involvement of the different muscles over time.
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Affiliation(s)
- Giorgio Tasca
- Istituto di Neurologia, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario 'A Gemelli', Rome, Italy
| | - Mauro Monforte
- Istituto di Neurologia, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario 'A Gemelli', Rome, Italy
| | - Jordi Díaz-Manera
- Department of Neurology, Neuromuscular Disorders Unit, Universitat Autonoma de Barcelona, Hospital de la Santa Creu I Sant Pau, Barcelona, Spain.,Muscular and Neurodegenerative Disease, Centro de Investigación Biomédica en Red en Enfermedades Raras, Barcelona, Spain
| | - Giacomo Brisca
- Center of Translational Myology and Neurodegenerative Diseases, Istituto Giannina Gaslini, Genova, Italy
| | | | - Adele D'Amico
- Unit of Neuromuscular and Neurodegenerative Diseases, Department of Neurosciences, Bambino Gesù Children's Hospital, Rome, Italy
| | - Fabiana Fattori
- Unit of Neuromuscular and Neurodegenerative Diseases, Department of Neurosciences, Bambino Gesù Children's Hospital, Rome, Italy
| | - Anna Pichiecchio
- Department of Neuroradiology, National Neurological Institute C Mondino, Pavia, Italy
| | - Angela Berardinelli
- Child Neurology and Psychiatry Unit, National Neurological Institute C Mondino, Pavia, Italy
| | - Lorenzo Maggi
- UO Neuroimmunologia e Malattie Neuromuscolari, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Elio Maccagnano
- UO Neuroradiologia, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.,Servizio di Diagnostica per Immagini, Centro Diagnostico Italiano, Milan, Italy
| | - Nicoline Løkken
- Copenhagen Neuromuscular Center, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Chiara Marini-Bettolo
- The John Walton Muscular Dystrophy Research Centre, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Francina Munell
- Department of Pediatric Neurology, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Angel Sanchez
- Department of Radiology, Hospital Universitari Vall d'Hebron, Barcelona, Spain
| | - Nahla Alshaikh
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Nicol C Voermans
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jahannaz Dastgir
- National Institute of Neurological Disorders and Stroke, NIH, Bethesda, Maryland, USA
| | - Dmitry Vlodavets
- Russian Children Neuromuscular Center, Veltischev Scientific Research Clinical Institute of Pediatrics, Pirogov Russian National Research Medical University, Moscow, Russia
| | - Jana Haberlová
- Department of Paediatric Neurology, 2nd Faculty of Medicine, Charles University in Prague and University Hospital Motol, Prague, Czech Republic
| | | | - Maggie C Walter
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-University of Munich, Munich, Germany
| | - Susana Quijano-Roy
- Assistance Publique des Hôpitaux de Paris (AP-HP), Unité Neuromusculaire, Service de Pédiatrie, Hôpital Raymond Poincaré, Hôpitaux Universitaires Paris-Ile-de-France Ouest, Garches, U1179 INSERM, Université de Versailles (UVSQ), Centre de Référence Neuromusculaire GNMH, FILNEMUS, France
| | - Robert-Yves Carlier
- Department of Radiology, Neurolocomotor Division, Raymond Poincaré Hospital, University Hospitals Paris-Ile-de-France West, Public Hospital Network of Paris, Garches, France
| | - Baziel G M van Engelen
- Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - John Vissing
- Copenhagen Neuromuscular Center, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Volker Straub
- The John Walton Muscular Dystrophy Research Centre, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Carsten G Bönnemann
- National Institute of Neurological Disorders and Stroke, NIH, Bethesda, Maryland, USA
| | - Eugenio Mercuri
- Neuropsichiatria Infantile, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Francesco Muntoni
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Elena Pegoraro
- Department of Neuroscience, University of Padova, Padova, Italy
| | - Enrico Bertini
- Unit of Neuromuscular and Neurodegenerative Diseases, Department of Neurosciences, Bambino Gesù Children's Hospital, Rome, Italy
| | - Bjarne Udd
- Department of Neurology, Neuromuscular Research Center, Tampere University and University Hospital, Rome, Italy.,Folkhälsan Institute of Genetics and the Department of Medical Genetics, University of Helsinki, Helsinki, Finland.,Department of Neurology, Vaasa Central Hospital, Vaasa, Finland
| | - Enzo Ricci
- Istituto di Neurologia, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario 'A Gemelli', Rome, Italy
| | - Claudio Bruno
- Center of Translational Myology and Neurodegenerative Diseases, Istituto Giannina Gaslini, Genova, Italy
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11
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Kojima Y, Noto YI, Takewaki D, Tokuda N, Shiga K, Hamano A, Mizuta I, Muranishi M, Kasai T, Nakagawa M, Mizuno T. Characteristic Posterior-dominant Lower Limb Muscle Involvement in Limb-girdle Muscular Dystrophy due to a DNAJB6 Phe93Leu Mutation. Intern Med 2017; 56:2347-2351. [PMID: 28794355 PMCID: PMC5635313 DOI: 10.2169/internalmedicine.6957-15] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
A 41-year-old man presented with gradually progressing proximal-dominant lower limb atrophy and weakness. His brother, mother and maternal aunt had the same symptoms. A physical examination and muscle imaging (CT and ultrasound) showed selective muscle involvement of the bilateral paraspinal, gluteus and posterior groups of lower limb muscles. Based on the characteristic muscle involvement pattern, the clinical findings and the muscle biopsy results, we made a straightforward diagnosis of limb-girdle muscular dystrophy (LGMD) due to a DNAJB6 Phe93Leu mutation based on a targeted gene analysis. In the differential diagnosis of adult-onset LGMD syndromes, in addition to investigating the family history, it is important to perform an extensive physical examination to determine the pattern of muscle involvement, and to perform a muscle biopsy. Our case suggests that posterior-dominant lower limb muscle impairment with gluteus and truncal muscle involvement and the detection of rimmed vacuoles on a muscle biopsy could be clues for the diagnosis of LGMD due to DNAJB6 mutations.
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Affiliation(s)
- Yuta Kojima
- Department of Neurology, Kyoto Prefectural University of Medicine, Japan
| | - Yu-Ichi Noto
- Department of Neurology, Kyoto Prefectural University of Medicine, Japan
| | - Daiki Takewaki
- Department of Neurology, Kyoto Prefectural University of Medicine, Japan
| | - Naoki Tokuda
- Department of Neurology, Kyoto Prefectural University of Medicine, Japan
| | - Kensuke Shiga
- Department of Medical Education & Primary Care, Kyoto Prefectural University of Medicine, Japan
| | - Ai Hamano
- Department of Neurology, Kyoto Prefectural University of Medicine, Japan
| | - Ikuko Mizuta
- Department of Neurology, Kyoto Prefectural University of Medicine, Japan
| | - Manabu Muranishi
- Department of Neurology, Kyoto Prefectural University of Medicine, Japan
| | - Takashi Kasai
- Department of Neurology, Kyoto Prefectural University of Medicine, Japan
| | - Masanori Nakagawa
- North Medical Center, Kyoto Prefectural University of Medicine, Japan
| | - Toshiki Mizuno
- Department of Neurology, Kyoto Prefectural University of Medicine, Japan
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12
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Garibaldi M, Tasca G, Diaz-Manera J, Ottaviani P, Laschena F, Pantoli D, Gerevini S, Fiorillo C, Maggi L, Tasca E, D'Amico A, Musumeci O, Toscano A, Bruno C, Massa R, Angelini C, Bertini E, Antonini G, Pennisi EM. Muscle MRI in neutral lipid storage disease (NLSD). J Neurol 2017; 264:1334-1342. [PMID: 28503705 PMCID: PMC5502068 DOI: 10.1007/s00415-017-8498-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 04/23/2017] [Accepted: 04/25/2017] [Indexed: 01/28/2023]
Abstract
Neutral lipid storage disease (NLSD) is a rare inherited disorder of lipid metabolism resulting in lipid droplets accumulation in different tissues. Skeletal muscle could be affected in both two different form of disease: NLSD with myopathy (NLSD-M) and NLSD with ichthyosis (NLSD-I). We present the muscle imaging data of 12 patients from the Italian Network for NLSD: ten patients presenting NLSD-M and two patients with NLSD-I. In NLSD-M gluteus minimus, semimembranosus, soleus and gastrocnemius medialis in the lower limbs and infraspinatus in the upper limbs were the most affected muscles. Gracilis, sartorius, subscapularis, pectoralis, triceps brachii and sternocleidomastoid were spared. Muscle involvement was not homogenous and characteristic “patchy” replacement was observed in at least one muscle in all the patients. Half of the patients showed one or more STIR positive muscles. In both NLSD-I cases muscle involvement was not observed by T1-TSE sequences, but one of them showed positive STIR images in more than one muscle in the leg. Our data provides evidence that muscle imaging can identify characteristic alterations in NLSD-M, characterized by a specific pattern of muscle involvement with “patchy” areas of fatty replacement. Larger cohorts are needed to assess if a distinct pattern of muscle involvement exists also for NLSD-I.
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Affiliation(s)
- Matteo Garibaldi
- Unit of Neuromuscular Diseases, Department of Neurology Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, 'Sapienza' University of Rome, Sant'Andrea Hospital, Rome, Italy.
| | - Giorgio Tasca
- Institute of Neurology, Policlinico "A.Gemelli" Foundation University Hospital, Rome, Italy
| | - Jordi Diaz-Manera
- Neuromuscular Diseases Unit, Department of Neurology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona (UAB), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Barcelona, Spain
| | | | - Francesco Laschena
- Department of Radiology, Istituto Dermopatico dell'Immacolata, IRCCS, Rome, Italy
| | - Donatella Pantoli
- Neuroradiology Unit, Department of Radiology, San Filippo Neri Hospital, Rome, Italy
| | | | - Chiara Fiorillo
- Pediatric Neurology and Muscular Disorders, Istituto Giannina Gaslini, Genoa, Italy
| | - Lorenzo Maggi
- Neuroimmunology and Neuromuscular Diseases Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | | | - Adele D'Amico
- Unit of Neuromuscular and Neurodegenerative Disorders, Laboratory of Molecular Medicine, 'Bambino Gesù' Children's Hospital, IRCCS, Rome, Italy
| | - Olimpia Musumeci
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Antonio Toscano
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | - Claudio Bruno
- Pediatric Neurology and Muscular Disorders, Istituto Giannina Gaslini, Genoa, Italy
| | - Roberto Massa
- Department of Systems Medicine (Neurology), University of Rome Tor Vergata, Rome, Italy
| | | | - Enrico Bertini
- Unit of Neuromuscular and Neurodegenerative Disorders, Laboratory of Molecular Medicine, 'Bambino Gesù' Children's Hospital, IRCCS, Rome, Italy
| | - Giovanni Antonini
- Unit of Neuromuscular Diseases, Department of Neurology Mental Health and Sensory Organs (NESMOS), Faculty of Medicine and Psychology, 'Sapienza' University of Rome, Sant'Andrea Hospital, Rome, Italy
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13
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Ten Dam L, van der Kooi AJ, Verhamme C, Wattjes MP, de Visser M. Muscle imaging in inherited and acquired muscle diseases. Eur J Neurol 2016; 23:688-703. [PMID: 27000978 DOI: 10.1111/ene.12984] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Accepted: 01/18/2016] [Indexed: 02/05/2023]
Abstract
In this review we discuss the use of conventional (computed tomography, magnetic resonance imaging, ultrasound) and advanced muscle imaging modalities (diffusion tensor imaging, magnetic resonance spectroscopy) in hereditary and acquired myopathies. We summarize the data on specific patterns of muscle involvement in the major categories of muscle disease and provide recommendations on how to use muscle imaging in this field of neuromuscular disorders.
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Affiliation(s)
- L Ten Dam
- Department of Neurology, Academic Medical Centre, Amsterdam, The Netherlands
| | - A J van der Kooi
- Department of Neurology, Academic Medical Centre, Amsterdam, The Netherlands
| | - C Verhamme
- Department of Neurology, Academic Medical Centre, Amsterdam, The Netherlands
| | - M P Wattjes
- Department of Radiology and Nuclear Medicine, VU University Medical Centre, Amsterdam, The Netherlands
| | - M de Visser
- Department of Neurology, Academic Medical Centre, Amsterdam, The Netherlands
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14
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Ruggieri A, Saredi S, Zanotti S, Pasanisi MB, Maggi L, Mora M. DNAJB6 Myopathies: Focused Review on an Emerging and Expanding Group of Myopathies. Front Mol Biosci 2016; 3:63. [PMID: 27747217 PMCID: PMC5043021 DOI: 10.3389/fmolb.2016.00063] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 09/20/2016] [Indexed: 12/16/2022] Open
Abstract
Mutations in the DNAJB6 gene have been associated with the autosomal dominant limb girdle muscular dystrophy type 1D (LGMD1D), a disorder characterized by abnormal protein aggregates and rimmed vacuoles in muscle fibers. DNAJB6 is a ubiquitously expressed Hsp40 co-chaperone characterized by a J domain that specifies Hsp70 functions in the cellular environment. DNAJB6 is also a potent inhibitor of expanded polyglutamine (polyQ) aggregation preventing aggregate toxicity in cells. In DNAJB6-mutated patients this anti-aggregation property is significantly reduced, albeit not completely lost. To elucidate the pathogenetic mechanisms underlying the DNAJB6-related myopathy, animal models have been created showing that, indeed, conditional muscular expression of a DNAJB6 mutant in the mouse causes a LGMD1D myofibrillary muscle tissue phenotype. Both mutations and phenotypes reported until recently were rather homogeneous, being exclusively missense mutations of a few amino acids of the protein G/F domain, and with a phenotype characterized by adult-onset slowly progressive muscular dystrophy predominantly affecting proximal muscles. Lately, several novel mutations and new phenotypes of DNAJB6 have been described. These mutations once more affect the G/F domain of DNAJB6 with missense changes and a splice site mutation; and the phenotypes include childhood onset and distal involvement of muscles, or childhood-onset LGMD1D with loss of ambulation in early adulthood and respiratory involvement. Thus, the spectrum of DNAJB6-related phenotypes is widening. Although our knowledge about the role of DNAJB6 in the pathogenesis of muscle diseases has made great progression, several questions remain unsolved, including why a ubiquitous protein affects only, or predominantly, skeletal muscle; why only the G/F domain is involved; and what is the possible role of the DNAJB6a isoform. Clarification of these issues will provide clues to implement possible therapeutic strategies for DNAJB6-related myopathies.
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Affiliation(s)
- Alessandra Ruggieri
- Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta Milan, Italy
| | - Simona Saredi
- Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta Milan, Italy
| | - Simona Zanotti
- Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta Milan, Italy
| | - Maria Barbara Pasanisi
- Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta Milan, Italy
| | - Lorenzo Maggi
- Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta Milan, Italy
| | - Marina Mora
- Neuromuscular Diseases and Neuroimmunology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta Milan, Italy
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15
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Tasca G, Monforte M, Ottaviani P, Pelliccioni M, Frusciante R, Laschena F, Ricci E. Magnetic resonance imaging in a large cohort of facioscapulohumeral muscular dystrophy patients: Pattern refinement and implications for clinical trials. Ann Neurol 2016; 79:854-864. [DOI: 10.1002/ana.24640] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 01/31/2016] [Accepted: 03/14/2016] [Indexed: 01/11/2023]
Affiliation(s)
| | - Mauro Monforte
- Institute of Neurology; Catholic University School of Medicine; Rome
| | | | - Marco Pelliccioni
- Italian Union against Muscular Dystrophy (UILDM), Rome Section; Rome Italy
| | | | | | - Enzo Ricci
- Institute of Neurology; Catholic University School of Medicine; Rome
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16
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Sandell S, Huovinen S, Palmio J, Raheem O, Lindfors M, Zhao F, Haapasalo H, Udd B. Diagnostically important muscle pathology in DNAJB6 mutated LGMD1D. Acta Neuropathol Commun 2016; 4:9. [PMID: 26847086 PMCID: PMC4743201 DOI: 10.1186/s40478-016-0276-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 01/15/2016] [Indexed: 11/17/2022] Open
Abstract
Introduction Limb girdle muscular dystrophies are a large group of both dominantly and recessively inherited muscle diseases. LGMD1D is caused by mutated DNAJB6 and the molecular pathogenesis is mediated by defective chaperonal function leading to impaired handling of misfolded proteins which normally would be degraded. Here we aim to clarify muscle pathology of LGMD1D in order to facilitate diagnostic accuracy. After following six Finnish LGMD1D families, we analysed 21 muscle biopsies obtained from 15 patients at different time points after the onset of symptoms. All biopsies were obtained from the lower limb muscles and processed for routine histochemistry, extensive immunohistochemistry and electron microscopy. Results Histopathological findings were myopathic or dystrophic combined with rimmed vacuolar pathology, and small myofibrillar aggregates. These myofibrillar inclusions contained abnormal accumulation of a number of proteins such as myotilin, αB-crystallin and desmin on immunohistochemistry, and showed extensive myofibrillar disorganization with excess of Z-disk material on ultrastructure. Later in the disease process the rimmed vacuolar pathology dominated with rare cases of pronounced larger pleomorphic myofibrillar aggregates. The rimmed vacuoles were reactive for several markers of defect autophagy such as ubiquitin, TDP-43, p62 and SMI-31. Conclusions Since DNAJB6 is known to interact with members of the chaperone assisted selective autophagy complex (CASA), including BAG3 – a known myofibrillar myopathy causing gene, the molecular muscle pathology is apparently mediated through impaired functions of CASA and possibly other complexes needed for the maintenance of the Z-disk and sarcomeric structures. The corresponding findings on histopathology offer clues for the diagnosis.
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Nam TS, Li W, Heo SH, Lee KH, Cho A, Shin JH, Kim YO, Chae JH, Kim DS, Kim MK, Choi SY. A novel mutation in DNAJB6, p.(Phe91Leu), in childhood-onset LGMD1D with a severe phenotype. Neuromuscul Disord 2015; 25:843-51. [DOI: 10.1016/j.nmd.2015.08.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 08/01/2015] [Accepted: 08/04/2015] [Indexed: 01/15/2023]
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18
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Tasca G, Monforte M, De Fino C, Kley RA, Ricci E, Mirabella M. Magnetic resonance imaging pattern recognition in sporadic inclusion-body myositis. Muscle Nerve 2015; 52:956-62. [DOI: 10.1002/mus.24661] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 03/01/2015] [Accepted: 03/16/2015] [Indexed: 01/14/2023]
Affiliation(s)
| | - Mauro Monforte
- Institute of Neurology, Catholic University School of Medicine; Rome Italy
| | - Chiara De Fino
- Institute of Neurology, Catholic University School of Medicine; Rome Italy
| | - Rudolf A. Kley
- Department of Neurology; University Hospital Bergmannsheil, Ruhr University; Bochum Germany
| | - Enzo Ricci
- Institute of Neurology, Catholic University School of Medicine; Rome Italy
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19
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Palmio J, Jonson PH, Evilä A, Auranen M, Straub V, Bushby K, Sarkozy A, Kiuru-Enari S, Sandell S, Pihko H, Hackman P, Udd B. Novel mutations in DNAJB6 gene cause a very severe early-onset limb-girdle muscular dystrophy 1D disease. Neuromuscul Disord 2015; 25:835-42. [PMID: 26338452 DOI: 10.1016/j.nmd.2015.07.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 07/17/2015] [Accepted: 07/20/2015] [Indexed: 10/23/2022]
Abstract
DNAJB6 is the causative gene for limb-girdle muscular dystrophy 1D (LGMD1D). Four different coding missense mutations, p.F89I, p.F93I, p.F93L, and p.P96R, have been reported in families from Europe, North America and Asia. The previously known mutations cause mainly adult-onset proximal muscle weakness with moderate progression and without respiratory involvement. A Finnish family and a British patient have been studied extensively due to a severe muscular dystrophy. The patients had childhood-onset LGMD, loss of ambulation in early adulthood and respiratory involvement; one patient died of respiratory failure aged 32. Two novel mutations, c.271T > A (p.F91I) and c.271T > C (p.F91L), in DNAJB6 were identified by whole exome sequencing as a cause of this severe form of LGMD1D. The results were confirmed by Sanger sequencing. The anti-aggregation effect of the mutant DNAJB6 was investigated in a filter-trap based system using transient transfection of mammalian cell lines and polyQ-huntingtin as a model for an aggregation-prone protein. Both novel mutant proteins show a significant loss of ability to prevent aggregation.
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Affiliation(s)
- Johanna Palmio
- Department of Neurology, Neuromuscular Research Center, University of Tampere and Tampere University Hospital, Tampere, FIN-33014, Finland.
| | - Per Harald Jonson
- Folkhälsan Institute of Genetics and the Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Anni Evilä
- Folkhälsan Institute of Genetics and the Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Mari Auranen
- Department of Neurology, Unit for Neuromuscular Diseases, Helsinki University Central Hospital, Helsinki, Finland
| | - Volker Straub
- The John Walton Muscular Dystrophy Research Centre, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Kate Bushby
- The John Walton Muscular Dystrophy Research Centre, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Anna Sarkozy
- The John Walton Muscular Dystrophy Research Centre, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Sari Kiuru-Enari
- Department of Neurology, Unit for Neuromuscular Diseases, Helsinki University Central Hospital, Helsinki, Finland
| | - Satu Sandell
- Department of Neurology, Neuromuscular Research Center, University of Tampere and Tampere University Hospital, Tampere, FIN-33014, Finland; Department of Neurology, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Helena Pihko
- Deparment of Child Neurology, Helsinki University Central Hospital, Helsinki, Finland
| | - Peter Hackman
- Folkhälsan Institute of Genetics and the Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Bjarne Udd
- Department of Neurology, Neuromuscular Research Center, University of Tampere and Tampere University Hospital, Tampere, FIN-33014, Finland; Folkhälsan Institute of Genetics and the Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland; Department of Neurology, Vaasa Central Hospital, Vaasa, Finland
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20
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Ruggieri A, Brancati F, Zanotti S, Maggi L, Pasanisi MB, Saredi S, Terracciano C, Antozzi C, D′Apice MR, Sangiuolo F, Novelli G, Marshall CR, Scherer SW, Morandi L, Federici L, Massa R, Mora M, Minassian BA. Complete loss of the DNAJB6 G/F domain and novel missense mutations cause distal-onset DNAJB6 myopathy. Acta Neuropathol Commun 2015. [PMID: 26205529 PMCID: PMC4513909 DOI: 10.1186/s40478-015-0224-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Introduction Protein aggregation is a common cause of neuropathology. The protein aggregation myopathy Limb-Girdle Muscular Dystrophy 1D (LGMD1D) is caused by mutations of amino acids Phe89 or Phe93 of DNAJB6, a co-chaperone of the HSP70 anti-aggregation protein. Another DNAJB6 mutation, Pro96Arg, was found to cause a distal-onset myopathy in one family. Results We detail the mutational, neuropathological, neurophysiological, neurological and radiological features of five new DNAJB6-myopathy families. One has the known Phe93Leu mutation and classic late-onset slowly progressive LGMD1D. Two have different mutations of Phe91 causing a variant childhood-onset severe limb-girdle myopathy. One has a Phe100Val mutation and distal-onset myopathy, unique early bulbar involvement, and a gender-modified wide age-of-onset range. The last has childhood-onset severe distal-onset myopathy and the first non-missense DNAJB6 mutation, c.346 + 5G > A, causing a splicing defect that entirely eliminates DNAJB6’s G/F domain (ΔG/F), the domain that harbours all other mutations. Clinical and imaging examinations reveal that muscles considered uninvolved in DNAJB6-myopathy, e.g. lateral gastrocnemii, are affected in our patients with new mutations. Mutational modelling based on the known structure of the bacterial DNAJ2 protein indicates that all past and present mutated residues cluster within 15 Å in the G/F domain and all disturb the interface of this domain with the protein’s J domain that confers the interaction with HSP70. Conclusions Our patients expand the phenotypic spectrum of DNAJB6-myopathy and allow tentative genotype-phenotype specifications. Combining with previous studies, the clinical severity spectrum is as follows: ΔG/F and Phe91 mutations, most severe; Phe100, Pro96, Phe89 mutations, intermediate; and Phe93, least severe. As it stands presently, proximal G/F domain mutations (Phe89, Phe91, Phe93) cause proximal limb-girdle myopathy, while distal G/F mutations (Pro96, Phe100) cause distal-onset myopathy. While all mutations affect the G/F–J interaction, each likely does so in different unknown extents or ways. One mutation, ΔG/F, causes its associated severe distal-onset myopathy phenotype in a clear way, through generation of a G/F domain-lacking DNAJB6 protein. Electronic supplementary material The online version of this article (doi:10.1186/s40478-015-0224-0) contains supplementary material, which is available to authorized users.
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21
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Murphy AP, Straub V. The Classification, Natural History and Treatment of the Limb Girdle Muscular Dystrophies. J Neuromuscul Dis 2015; 2:S7-S19. [PMID: 27858764 PMCID: PMC5271430 DOI: 10.3233/jnd-150105] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Over sixty years ago John Walton and Frederick Nattrass defined limb girdle muscular dystrophy (LGMD) as a separate entity from the X-linked dystrophinopathies such as Duchenne and Becker muscular dystrophies. LGMD is a highly heterogeneous group of very rare neuromuscular disorders whose common factor is their autosomal inheritance. Sixty years later, with the development of increasingly advanced molecular genetic investigations, a more precise classification and understanding of the pathogenesis is possible.To date, over 30 distinct subtypes of LGMD have been identified, most of them inherited in an autosomal recessive fashion. There are significant differences in the frequency of subtypes of LGMD between different ethnic populations, providing evidence of founder mutations. Clinically there is phenotypic heterogeneity between subtypes of LGMD with varying severity and age of onset of symptoms. The first natural history studies into subtypes of LGMD are in process, but large scale longitudinal data have been lacking due to the rare nature of these diseases. Following natural history data collection, the next challenge is to develop more effective, disease specific treatments. Current management is focussed on symptomatic and supportive treatments. Advances in the application of new omics technologies and the generation of large-scale biomedical data will help to better understand disease mechanisms in LGMD and should ultimately help to accelerate the development of novel and more effective therapeutic approaches.
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Affiliation(s)
| | - Volker Straub
- Correspondence to: Volker Straub, The John Walton Muscular Dystrophy Research Centre, Institute of Genetic Medicine, The International Centre for Life, Newcastle University, Central Parkway, Newcastle Upon Tyne, United Kingdom. NE1 3BZ. Tel.: +44 1912 418652; Fax: +44 1912 418770;
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22
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Cotta A, Carvalho E, da-Cunha-Júnior AL, Paim JF, Navarro MM, Valicek J, Menezes MM, Nunes SV, Xavier Neto R, Takata RI, Vargas AP. Common recessive limb girdle muscular dystrophies differential diagnosis: why and how? ARQUIVOS DE NEURO-PSIQUIATRIA 2015; 72:721-34. [PMID: 25252238 DOI: 10.1590/0004-282x20140110] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 06/26/2014] [Indexed: 01/27/2023]
Abstract
Limb girdle muscular dystrophies are heterogeneous autosomal hereditary neuromuscular disorders. They produce dystrophic changes on muscle biopsy and they are associated with mutations in several genes involved in muscular structure and function. Detailed clinical, laboratorial, imaging, diagnostic flowchart, photographs, tables, and illustrated diagrams are presented for the differential diagnosis of common autosomal recessive limb girdle muscular dystrophy subtypes diagnosed nowadays at one reference center in Brazil. Preoperative image studies guide muscle biopsy site selection. Muscle involvement image pattern differs depending on the limb girdle muscular dystrophy subtype. Muscle involvement is conspicuous at the posterior thigh in calpainopathy and fukutin-related proteinopathy; anterior thigh in sarcoglycanopathy; whole thigh in dysferlinopathy, and telethoninopathy. The precise differential diagnosis of limb girdle muscular dystrophies is important for genetic counseling, prognostic orientation, cardiac and respiratory management. Besides that, it may probably, in the future, provide specific genetic therapies for each subtype.
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Affiliation(s)
- Ana Cotta
- Departamento de Patologia, Rede SARAH de Hospitais de Reabilitação, Brazil
| | - Elmano Carvalho
- Departamento de Neurofisiologia, Rede SARAH de Hospitais de Reabilitação, Brazil
| | | | - Júlia Filardi Paim
- Departamento de Patologia, Rede SARAH de Hospitais de Reabilitação, Brazil
| | - Monica M Navarro
- Departamento de Pediatria, Rede SARAH de Hospitais de Reabilitação, Brazil
| | - Jaquelin Valicek
- Departamento de Neurofisiologia, Rede SARAH de Hospitais de Reabilitação, Brazil
| | | | | | - Rafael Xavier Neto
- Departamento de Neurologia, Rede SARAH de Hospitais de Reabilitação, Brazil
| | - Reinaldo Issao Takata
- Departamento de Biologia Molecular, Rede SARAH de Hospitais de Reabilitação, Brasília DF, Brazil
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23
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Pesce ER, Blatch GL, Edkins AL. Hsp40 Co-chaperones as Drug Targets: Towards the Development of Specific Inhibitors. TOPICS IN MEDICINAL CHEMISTRY 2015. [DOI: 10.1007/7355_2015_92] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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24
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Affiliation(s)
- A H V Schapira
- Department of Clinical Neurosciences, UCL Institute of Neurology, London, UK.
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25
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Palmio J, Udd B. Borderlines between Sarcopenia and Mild Late-Onset Muscle Disease. Front Aging Neurosci 2014; 6:267. [PMID: 25324776 PMCID: PMC4179539 DOI: 10.3389/fnagi.2014.00267] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 09/15/2014] [Indexed: 12/25/2022] Open
Abstract
Numerous natural or disease-related alterations occur in different tissues of the body with advancing age. Sarcopenia is defined as age-related decrease of muscle mass and strength beginning in mid-adulthood and accelerating in people older than 60 years. Pathophysiology of sarcopenia involves both neural and muscle dependent mechanisms and is enhanced by multiple factors. Aged muscles show loss in fiber number, fiber atrophy, and gradual increase in the number of ragged red fibers and cytochrome c oxidase-negative fibers. Generalized loss of muscle tissue and increased amount of intramuscular fat are seen on muscle imaging. However, the degree of these changes varies greatly between individuals, and the distinction between normal age-related weakening of muscle strength and clinically significant muscle disease is not always obvious. Because some of the genetic myopathies can present at a very old age and be mild in severity, the correct diagnosis is easily missed. We highlight this difficult borderline zone between sarcopenia and muscle disease by two examples: LGMD1D and myotonic dystrophy type 2. Muscle magnetic resonance imaging (MRI) is a useful tool to help differentiate myopathies from sarcopenia and to reach the correct diagnosis also in the elderly.
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Affiliation(s)
- Johanna Palmio
- Department of Neurology, Neuromuscular Research Center, Tampere University Hospital, University of Tampere , Tampere , Finland
| | - Bjarne Udd
- Department of Neurology, Neuromuscular Research Center, Tampere University Hospital, University of Tampere , Tampere , Finland ; Department of Medical Genetics, Folkhälsan Institute of Genetics, University of Helsinki , Helsinki , Finland ; Department of Neurology, Vaasa Central Hospital , Vaasa , Finland
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26
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Zhang TT, Jiang YY, Shang L, Shi ZZ, Liang JW, Wang Z, Zhang Y, Hao JJ, Jia XM, Xu X, Cai Y, Zhan QM, Wang MR. Overexpression of DNAJB6 promotes colorectal cancer cell invasion through an IQGAP1/ERK-dependent signaling pathway. Mol Carcinog 2014; 54:1205-13. [PMID: 25044025 DOI: 10.1002/mc.22194] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 05/18/2014] [Accepted: 05/22/2014] [Indexed: 12/16/2022]
Affiliation(s)
- Tong-Tong Zhang
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Yan-Yi Jiang
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Li Shang
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Zhi-Zhou Shi
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Jian-Wei Liang
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Zheng Wang
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Yu Zhang
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Jia-Jie Hao
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Xue-Mei Jia
- Department of Histology and Embryology; Anhui Medical University; Hefei China
| | - Xin Xu
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Yan Cai
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Qi-Min Zhan
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
| | - Ming-Rong Wang
- State Key Laboratory of Molecular Oncology; Cancer Institute (Hospital), Peking Union Medical College and Chinese Academy of Medical Sciences; Beijing China
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27
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Wafaie A, Aboumousa A. The benefit of combining clinical and radiological assessments in diagnosis of inherited muscle diseases. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2014. [DOI: 10.1016/j.ejrnm.2013.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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