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Manini A, Velardo D, Ciscato P, Cinnante C, Moggio M, Comi G, Corti S, Ronchi D. Expanding the Phenotypic Spectrum of Vocal Cord and Pharyngeal Weakness With Distal Myopathy due to the p.S85C MATR3 Mutation. Neurol Genet 2022; 8:e200006. [PMID: 35812165 PMCID: PMC9258980 DOI: 10.1212/nxg.0000000000200006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 05/04/2022] [Indexed: 11/16/2022]
Abstract
Objectives The c.254C>G (p.S85C) MATR3 variant causes vocal cord and pharyngeal weakness with distal myopathy (VCPDM), which is characterized by progressive, asymmetric, predominantly distal muscle weakness, dysphonia, dysphagia, and respiratory impairment. Herein, we describe an Italian patient who harbored the p.S85C MATR3 variant and showed a composite phenotype of VCPDM and sensorimotor polyneuropathy. Methods The proband underwent neurologic evaluation, muscular MRI of the lower limbs, neurophysiologic assessment, muscle biopsy, and spirometry. After excluding common acquired and genetic causes of sensorimotor polyneuropathy, a larger group of genes involved in inherited forms of neuropathy, distal myopathy, and motor neuron disorders were analyzed by next-generation sequencing targeted panels. Results The patient, affected by progressive distal muscle weakness and hypotrophy, myalgias, dysphonia, dysphagia, respiratory impairment, and sensory abnormalities, harbored the heterozygous c.254C>G (p.S85C) MATR3 substitution. Neurophysiologic assessment revealed a severe sensorimotor polyneuropathy. Variation of fiber size, central nuclei, and nonrimmed vacuoles were evident at muscle biopsy. Discussion This finding extends the MATR3-associated VCPDM phenotypic spectrum and suggests considering MATR3 analysis in suspected congenital polyneuropathies with odd features, including dysphonia, dysphagia, and respiratory insufficiency.
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Todd TW, Petrucelli L. Modelling amyotrophic lateral sclerosis in rodents. Nat Rev Neurosci 2022; 23:231-251. [PMID: 35260846 DOI: 10.1038/s41583-022-00564-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2022] [Indexed: 12/11/2022]
Abstract
The efficient study of human disease requires the proper tools, one of the most crucial of which is an accurate animal model that faithfully recapitulates the human condition. The study of amyotrophic lateral sclerosis (ALS) is no exception. Although the majority of ALS cases are considered sporadic, most animal models of this disease rely on genetic mutations identified in familial cases. Over the past decade, the number of genes associated with ALS has risen dramatically and, with each new genetic variant, there is a drive to develop associated animal models. Rodent models are of particular importance as they allow for the study of ALS in the context of a living mammal with a comparable CNS. Such models not only help to verify the pathogenicity of novel mutations but also provide critical insight into disease mechanisms and are crucial for the testing of new therapeutics. In this Review, we aim to summarize the full spectrum of ALS rodent models developed to date.
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Affiliation(s)
- Tiffany W Todd
- Department of Neuroscience, Mayo Clinic Jacksonville, Jacksonville, FL, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic Jacksonville, Jacksonville, FL, USA.
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Cavalli M, Cardani R, Renna LV, Toffetti M, Villa L, Meola G. First Family of MATR3-Related Distal Myopathy From Italy: The Role of Muscle Biopsy in the Diagnosis and Characterization of a Still Poorly Understood Disease. Front Neurol 2021; 12:715386. [PMID: 34659085 PMCID: PMC8517147 DOI: 10.3389/fneur.2021.715386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 09/01/2021] [Indexed: 11/13/2022] Open
Abstract
Mutations in the MATR3 gene are associated to distal myopathy with vocal cord and pharyngeal weakness (VCPDM), as well as familiar and sporadic motor neuron disease. To date, 12 VCPDM families from the United States, Germany, Japan, Bulgary, and France have been described in the literature. Here we report an Italian family with a propositus of a 40-year-old woman presenting progressive bilateral foot drop, rhinolalia, and distal muscular atrophy, without clinical signs of motor neuron affection. Her father, deceased some years before, presented a similar distal myopathy phenotype, while her 20-year-old son is asymptomatic. Myopathic changes with vacuolization were observed in muscle biopsy from the propositus. These results, together with the peculiar clinical picture, lead to MATR3 gene sequencing, which revealed a heterozygous p.S85C mutation in the propositus. The same mutation was found in her son. Over a 5-year follow-up, progression is mild in the propositus, while her son remains asymptomatic. Clinical, radiological, and pathological data of our propositus are presented and compared to previously reported cases of VCPDM. VCPDM turns out to be a quite homogenous phenotype of late-onset myopathy associated to p.S85C mutation in MATR3 gene. MATR3-related pathology, encompassing myopathy and motor neuron disease, represents an illustrative example of multisystem proteinopathy (MSP), such as other diseases associated to mutations in VCP, HNRNPA2B1, HNRNPA1, and SQSTM1 genes. The present report contributes to a further characterization of this still poorly understood pathology and points out the diagnostic utility of muscle biopsy in challenging cases.
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Affiliation(s)
- Michele Cavalli
- Université Côte d'Azur, Peripheral Nervous System and Muscle Department, Pasteur 2 Hospital, Centre Hospitalier Universitaire de Nice, Nice, France
| | - Rosanna Cardani
- BioCor Biobank, Department of Clinical Pathology, Istituto di Ricovero e Cura a Carattere Scientifico - IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Laura Valentina Renna
- BioCor Biobank, Department of Clinical Pathology, Istituto di Ricovero e Cura a Carattere Scientifico - IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Mauro Toffetti
- Department of Neurology and Stroke Unit, ASST Franciacorta, Chiari, Italy
| | - Luisa Villa
- Université Côte d'Azur, Peripheral Nervous System and Muscle Department, Pasteur 2 Hospital, Centre Hospitalier Universitaire de Nice, Nice, France
| | - Giovanni Meola
- Department of Biomedical Sciences for Health, Department of Neurorehabilitation Sciences, Casa di Cura del Policlinico, University of Milan, Milan, Italy
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Abstract
RNA-binding proteins (RBPs) are essential factors required for the physiological function of neurons, muscle, and other tissue types. In keeping with this, a growing body of genetic, clinical, and pathological evidence indicates that RBP dysfunction and/or gene mutation leads to neurodegeneration and myopathy. Here, we summarize the current understanding of matrin 3 (MATR3), a poorly understood RBP implicated not only in ALS and frontotemporal dementia but also in distal myopathy. We begin by reviewing MATR3's functions, its regulation, and how it may be involved in both sporadic and familial neuromuscular disease. We also discuss insights gleaned from cellular and animal models of MATR3 pathogenesis, the links between MATR3 and other disease-associated RBPs, and the mechanisms underlying RBP-mediated disorders.
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Affiliation(s)
- Ahmed M. Malik
- Medical Scientist Training Program
- Neuroscience Graduate Program, and
| | - Sami J. Barmada
- Neuroscience Graduate Program, and
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
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Ramesh N, Kour S, Anderson EN, Rajasundaram D, Pandey UB. RNA-recognition motif in Matrin-3 mediates neurodegeneration through interaction with hnRNPM. Acta Neuropathol Commun 2020; 8:138. [PMID: 32811564 PMCID: PMC7437177 DOI: 10.1186/s40478-020-01021-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 12/12/2022] Open
Abstract
Background Amyotrophic lateral sclerosis (ALS) is an adult-onset, fatal neurodegenerative disease characterized by progressive loss of upper and lower motor neurons. While pathogenic mutations in the DNA/RNA-binding protein Matrin-3 (MATR3) are linked to ALS and distal myopathy, the molecular mechanisms underlying MATR3-mediated neuromuscular degeneration remain unclear. Methods We generated Drosophila lines with transgenic insertion of human MATR3 wildtype, disease-associated variants F115C and S85C, and deletion variants in functional domains, ΔRRM1, ΔRRM2, ΔZNF1 and ΔZNF2. We utilized genetic, behavioral and biochemical tools for comprehensive characterization of our models in vivo and in vitro. Additionally, we employed in silico approaches to find transcriptomic targets of MATR3 and hnRNPM from publicly available eCLIP datasets. Results We found that targeted expression of MATR3 in Drosophila muscles or motor neurons shorten lifespan and produces progressive motor defects, muscle degeneration and atrophy. Strikingly, deletion of its RNA-recognition motif (RRM2) mitigates MATR3 toxicity. We identified rump, the Drosophila homolog of human RNA-binding protein hnRNPM, as a modifier of mutant MATR3 toxicity in vivo. Interestingly, hnRNPM physically and functionally interacts with MATR3 in an RNA-dependent manner in mammalian cells. Furthermore, common RNA targets of MATR3 and hnRNPM converge in biological processes important for neuronal health and survival. Conclusions We propose a model of MATR3-mediated neuromuscular degeneration governed by its RNA-binding domains and modulated by interaction with splicing factor hnRNPM. Electronic supplementary material The online version of this article (10.1186/s40478-020-01021-5) contains supplementary material, which is available to authorized users.
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Mensch A, Kraya T, Koester F, Müller T, Stoevesandt D, Zierz S. Whole-body muscle MRI of patients with MATR3-associated distal myopathy reveals a distinct pattern of muscular involvement and highlights the value of whole-body examination. J Neurol 2020; 267:2408-2420. [PMID: 32361838 PMCID: PMC7358922 DOI: 10.1007/s00415-020-09862-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/18/2020] [Accepted: 04/22/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVE MATR3-associated distal myopathy is a rare distal myopathy predominantly affecting lower legs as well as wrist- and finger extensors. Whilst most distal myopathies are clinically and genetically well characterized, diagnosis often remains challenging. Pattern-based magnetic resonance imaging (MRI) approaches offer valuable additional information. However, a consistent pattern of muscular affection is missing for most distal myopathies. Thus, the aim of the present study was to establish a disease-specific pattern of muscular involvement in MATR3-associated distal myopathy using whole-body MRI. METHODS 15 patients (25-79 years of age, 7 female) with MATR3-associated distal myopathy were subjected to whole-body MRI. The grade of fatty involution for individual muscles was determined using Fischer-Grading. Results were compared to established MRI-patterns of other distal myopathies. RESULTS There was a predominant affection of the distal lower extremities. Lower legs showed a severe fatty infiltration, prominently affecting gastrocnemius and soleus muscle. In thighs, a preferential involvement of semimembranous and biceps femoris muscle was observed. Severe affection of gluteus minimus muscle as well as axial musculature, mainly affecting the thoracic segments, was seen. A sufficient discrimination to other forms of distal myopathy based solely on MRI-findings of the lower extremities was not possible. However, the inclusion of additional body parts seemed to yield specificity. INTERPRETATION Muscle MRI of patients with MATR3-associated distal myopathy revealed a distinct pattern of muscular involvement. The usage of whole-body muscle MRI provided valuable additional findings as compared to regular MRI of the lower extremities to improve distinction from other disease entities.
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Affiliation(s)
- Alexander Mensch
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.
| | - Torsten Kraya
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.,Department of Neurology, Klinikum St. Georg, Leipzig, Germany
| | - Felicitas Koester
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.,Department of Radiology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
| | - Tobias Müller
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
| | - Dietrich Stoevesandt
- Department of Radiology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
| | - Stephan Zierz
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
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Yamashita S, Kimura E, Zhang Z, Tawara N, Hara K, Yoshimura A, Takashima H, Ando Y. Muscle pathology of hereditary motor and sensory neuropathy with proximal dominant involvement with TFG mutation. Muscle Nerve 2019; 60:739-744. [PMID: 31449671 DOI: 10.1002/mus.26683] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/19/2019] [Accepted: 08/20/2019] [Indexed: 11/12/2022]
Abstract
BACKGROUND Hereditary motor and sensory neuropathy with proximal dominant involvement (HMSN-P) is characterized by adult onset, a slowly progressive course and autosomal dominant inheritance. It remains unclear whether myopathic changes occur histopathologically. METHODS We encountered 2 patients in a family with a heterozygous p.P285L mutation in TRK-fused gene (TFG), which is known to cause HMSN-P. The affected individuals developed proximal-dominant muscle weakness in their 40s, which slowly progressed to a motor neuron disease-like phenotype. RESULTS Muscle biopsy showed myopathic pathology including fiber size variability, increased internal nuclei, fiber splitting, and core-like structures, associated with neurogenic changes: large groups of atrophic fibers and fiber type-grouping. Immunohistochemistry revealed sarcoplasmic aggregates of TFG, TDP-43, and p62 without congophilic material. CONCLUSIONS The present study demonstrates myopathic changes in HMSN-P. Although the mechanisms underlying the skeletal muscle involvement remain to be elucidated, immunohistochemistry suggests that abnormal protein aggregation may be involved in the myopathic pathology.
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Affiliation(s)
- Satoshi Yamashita
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - En Kimura
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Ziwei Zhang
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Nozomu Tawara
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Kentaro Hara
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Akiko Yoshimura
- Department of Neurology and Geriatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Hiroshi Takashima
- Department of Neurology and Geriatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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Zhang X, Yamashita S, Hara K, Doki T, Tawara N, Ikeda T, Misumi Y, Zhang Z, Matsuo Y, Nagai M, Kurashige T, Maruyama H, Ando Y. A mutantMATR3mouse model to explain multisystem proteinopathy. J Pathol 2019; 249:182-192. [DOI: 10.1002/path.5289] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 04/08/2019] [Accepted: 04/28/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Xiao Zhang
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Satoshi Yamashita
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Kentaro Hara
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Tsukasa Doki
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Nozomu Tawara
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Tokunori Ikeda
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
- Department of Clinical InvestigationKumamoto University Hospital Kumamoto Japan
| | - Yohei Misumi
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Ziwei Zhang
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Yoshimasa Matsuo
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Makiko Nagai
- Department of NeurologyKitasato University School of Medicine Sagamihara Japan
| | - Takashi Kurashige
- Department of NeurologyNational Hospital Organization Kure Medical Centre Kure Hiroshima Japan
- Department of Clinical Neuroscience and TherapeuticsHiroshima University Graduate School of Biomedical and Health Sciences Hiroshima Japan
| | - Hirofumi Maruyama
- Department of Clinical Neuroscience and TherapeuticsHiroshima University Graduate School of Biomedical and Health Sciences Hiroshima Japan
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
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Moloney C, Rayaprolu S, Howard J, Fromholt S, Brown H, Collins M, Cabrera M, Duffy C, Siemienski Z, Miller D, Borchelt DR, Lewis J. Analysis of spinal and muscle pathology in transgenic mice overexpressing wild-type and ALS-linked mutant MATR3. Acta Neuropathol Commun 2018; 6:137. [PMID: 30563574 PMCID: PMC6299607 DOI: 10.1186/s40478-018-0631-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 11/03/2018] [Indexed: 12/12/2022] Open
Abstract
Mutations in MATR3 have been associated with amyotrophic lateral sclerosis (ALS) as well as a form of distal myopathy termed vocal cord pharyngeal distal myopathy (VCPDM). To begin to understand how mutations in MATR3 may cause disease, here we provide initial characterization of transgenic (Tg) mice expressing human wild-type (WT) MATR3 (MATR3WT) and ALS-mutant F115C MATR3 (MATR3F115C) proteins under the control of the mouse prion promoter (MoPrP). For each construct, we established multiple independent lines of mice that stably transmitted the transgene. Unexpectedly, for all stably-transmitting lines examined, MATR3 transgenic mRNA expression was more robust in muscle, with minimal expression in spinal cord. The levels of transgenic mRNA in muscle did not differ between mice from our lead MATR3F115C line and lead MATR3WT line, but mice from the lead MATR3F115C line had significantly higher levels of MATR3 protein in muscle over the lead MATR3WT line. Mice from the three independent, established lines of MATR3F115C mice developed weakness in both fore- and hind-limbs as early as < 1 months of age; whereas, MATR3WT mice aged to > 20 months were not overtly distinguishable from non-transgenic (NT) littermates based on basic motor phenotype. Muscle of both MATR3WT and MATR3F115C mice showed vacuoles by 2 months of age which worsened by ~ 10 months, but vacuolation was noticeably more severe in MATR3F115C mice. Overall, our results indicate that increasing the levels of MATR3 in muscle can cause pathologic changes associated with myopathy, with MATR3F115C expression causing overt muscle atrophy and a profound motor phenotype. The findings suggest that analysis of muscle pathology in individuals harboring ALS-linked MATR3 mutations should be routinely considered.
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Affiliation(s)
- Christina Moloney
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Sruti Rayaprolu
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - John Howard
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Susan Fromholt
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Hilda Brown
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Matt Collins
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Mariela Cabrera
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Colin Duffy
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Zoe Siemienski
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Dave Miller
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - David R Borchelt
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA.
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA.
- McKnight Brain Institute, Department of Neuroscience, University of Florida, Gainesville, Florida, USA.
| | - Jada Lewis
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA.
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA.
- McKnight Brain Institute, Department of Neuroscience, University of Florida, Gainesville, Florida, USA.
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Milone M, Liewluck T. The unfolding spectrum of inherited distal myopathies. Muscle Nerve 2018; 59:283-294. [PMID: 30171629 DOI: 10.1002/mus.26332] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/26/2018] [Accepted: 08/28/2018] [Indexed: 12/30/2022]
Abstract
Distal myopathies are a group of rare muscle diseases characterized by distal weakness at onset. Although acquired myopathies can occasionally present with distal weakness, the majority of distal myopathies have a genetic etiology. Their age of onset varies from early-childhood to late-adulthood while the predominant muscle weakness can affect calf, ankle dorsiflexor, or distal upper limb muscles. A spectrum of muscle pathological changes, varying from nonspecific myopathic changes to rimmed vacuoles to myofibrillar pathology to nuclei centralization, have been noted. Likewise, the underlying molecular defect is heterogeneous. In addition, there is emerging evidence that distal myopathies can result from defective proteins encoded by genes causative of neurogenic disorders, be manifestation of multisystem proteinopathies or the result of the altered interplay between different genes. In this review, we provide an overview on the clinical, electrophysiological, pathological, and molecular aspects of distal myopathies, focusing on the most recent developments in the field. Muscle Nerve 59:283-294, 2019.
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Affiliation(s)
| | - Teerin Liewluck
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
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11
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Mensch A, Meinhardt B, Bley N, Hüttelmaier S, Schneider I, Stoltenburg-Didinger G, Kraya T, Müller T, Zierz S. The p.S85C-mutation in MATR3 impairs stress granule formation in Matrin-3 myopathy. Exp Neurol 2018; 306:222-231. [PMID: 29763601 DOI: 10.1016/j.expneurol.2018.05.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 04/10/2018] [Accepted: 05/10/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Alexander Mensch
- Department of Neurology, Martin Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle, Germany.
| | - Beate Meinhardt
- Department of Neurology, Martin Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle, Germany
| | - Nadine Bley
- Institute of Molecular Medicine, Martin Luther University of Halle-Wittenberg, Kurt-Mothes-Str. 3A, 06112 Halle, Germany
| | - Stefan Hüttelmaier
- Institute of Molecular Medicine, Martin Luther University of Halle-Wittenberg, Kurt-Mothes-Str. 3A, 06112 Halle, Germany
| | - Ilka Schneider
- Department of Neurology, Martin Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle, Germany
| | - Gisela Stoltenburg-Didinger
- Department of Neurology, Martin Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle, Germany; Institute of Cell and Neurobiology, Charité University Medicine Berlin, CCO Virchowweg 6, 10117 Berlin, Germany
| | - Torsten Kraya
- Department of Neurology, Martin Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle, Germany
| | - Tobias Müller
- Department of Neurology, Martin Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle, Germany
| | - Stephan Zierz
- Department of Neurology, Martin Luther University of Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle, Germany
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Banerjee A, Vest KE, Pavlath GK, Corbett AH. Nuclear poly(A) binding protein 1 (PABPN1) and Matrin3 interact in muscle cells and regulate RNA processing. Nucleic Acids Res 2017; 45:10706-10725. [PMID: 28977530 PMCID: PMC5737383 DOI: 10.1093/nar/gkx786] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 08/27/2017] [Indexed: 01/01/2023] Open
Abstract
The polyadenylate binding protein 1 (PABPN1) is a ubiquitously expressed RNA binding protein vital for multiple steps in RNA metabolism. Although PABPN1 plays a critical role in the regulation of RNA processing, mutation of the gene encoding this ubiquitously expressed RNA binding protein causes a specific form of muscular dystrophy termed oculopharyngeal muscular dystrophy (OPMD). Despite the tissue-specific pathology that occurs in this disease, only recently have studies of PABPN1 begun to explore the role of this protein in skeletal muscle. We have used co-immunoprecipitation and mass spectrometry to identify proteins that interact with PABPN1 in mouse skeletal muscles. Among the interacting proteins we identified Matrin 3 (MATR3) as a novel protein interactor of PABPN1. The MATR3 gene is mutated in a form of distal myopathy and amyotrophic lateral sclerosis (ALS). We demonstrate, that like PABPN1, MATR3 is critical for myogenesis. Furthermore, MATR3 controls critical aspects of RNA processing including alternative polyadenylation and intron retention. We provide evidence that MATR3 also binds and regulates the levels of long non-coding RNA (lncRNA) Neat1 and together with PABPN1 is required for normal paraspeckle function. We demonstrate that PABPN1 and MATR3 are required for paraspeckles, as well as for adenosine to inosine (A to I) RNA editing of Ctn RNA in muscle cells. We provide a functional link between PABPN1 and MATR3 through regulation of a common lncRNA target with downstream impact on paraspeckle morphology and function. We extend our analysis to a mouse model of OPMD and demonstrate altered paraspeckle morphology in the presence of endogenous levels of alanine-expanded PABPN1. In this study, we report protein-binding partners of PABPN1, which could provide insight into novel functions of PABPN1 in skeletal muscle and identify proteins that could be sequestered with alanine-expanded PABPN1 in the nuclear aggregates found in OPMD.
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Affiliation(s)
- Ayan Banerjee
- Department of Biology, Emory University, Atlanta, GA 30322, USA
| | - Katherine E Vest
- Department of Pharmacology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Grace K Pavlath
- Department of Pharmacology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Anita H Corbett
- Department of Biology, Emory University, Atlanta, GA 30322, USA
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ALS Associated Mutations in Matrin 3 Alter Protein-Protein Interactions and Impede mRNA Nuclear Export. Sci Rep 2017; 7:14529. [PMID: 29109432 PMCID: PMC5674072 DOI: 10.1038/s41598-017-14924-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 10/13/2017] [Indexed: 12/12/2022] Open
Abstract
Mutations in Matrin 3 have recently been linked to ALS, though the mechanism that induces disease in these patients is unknown. To define the protein interactome of wild-type and ALS-linked MATR3 mutations, we performed immunoprecipitation followed by mass spectrometry using NSC-34 cells expressing human wild-type or mutant Matrin 3. Gene ontology analysis identified a novel role for Matrin 3 in mRNA transport centered on proteins in the TRanscription and EXport (TREX) complex, known to function in mRNA biogenesis and nuclear export. ALS-linked mutations in Matrin 3 led to its re-distribution within the nucleus, decreased co-localization with endogenous Matrin 3 and increased co-localization with specific TREX components. Expression of disease-causing Matrin 3 mutations led to nuclear mRNA export defects of both global mRNA and more specifically the mRNA of TDP-43 and FUS. Our findings identify a potential pathogenic mechanism attributable to MATR3 mutations and further link cellular transport defects to ALS.
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Sabatelli M, Marangi G, Conte A, Tasca G, Zollino M, Lattante S. New ALS-Related Genes Expand the Spectrum Paradigm of Amyotrophic Lateral Sclerosis. Brain Pathol 2016; 26:266-75. [PMID: 26780671 DOI: 10.1111/bpa.12354] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 01/14/2016] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic Lateral Sclerosis (ALS) is characterized by the degeneration of upper and lower motor neurons. Clinical heterogeneity is a well-recognized feature of the disease as age of onset, site of onset and the duration of the disease can vary greatly among patients. A number of genes have been identified and associated to familial and sporadic forms of ALS but the majority of cases remains still unexplained. Recent breakthrough discoveries have demonstrated that clinical manifestations associated with ALS-related genes are not circumscribed to motor neurons involvement. In this view, ALS appears to be linked to different conditions over a continuum or spectrum in which overlapping phenotypes may be identified. In this review, we aim to examine the increasing number of spectra, including ALS/Frontotemporal Dementia and ALS/Myopathies spectra. Considering all these neurodegenerative disorders as different phenotypes of the same spectrum can help to identify common pathological pathways and consequently new therapeutic targets in these incurable diseases.
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Affiliation(s)
- Mario Sabatelli
- Department of Geriatrics, Neurosciences and Orthopedics, Clinic Center NEMO-Roma. Institute of Neurology
| | - Giuseppe Marangi
- Institute of Medical Genetics, Catholic University School of Medicine, Rome, Italy
| | - Amelia Conte
- Department of Geriatrics, Neurosciences and Orthopedics, Clinic Center NEMO-Roma. Institute of Neurology
| | | | - Marcella Zollino
- Institute of Medical Genetics, Catholic University School of Medicine, Rome, Italy
| | - Serena Lattante
- Institute of Medical Genetics, Catholic University School of Medicine, Rome, Italy
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Moloney C, Rayaprolu S, Howard J, Fromholt S, Brown H, Collins M, Cabrera M, Duffy C, Siemienski Z, Miller D, Swanson MS, Notterpek L, Borchelt DR, Lewis J. Transgenic mice overexpressing the ALS-linked protein Matrin 3 develop a profound muscle phenotype. Acta Neuropathol Commun 2016; 4:122. [PMID: 27863507 PMCID: PMC5116203 DOI: 10.1186/s40478-016-0393-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 11/09/2016] [Indexed: 12/12/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disorder of upper and lower motor neurons. Mutations in the gene encoding the nuclear matrix protein Matrin 3 have been found in familial cases of ALS, as well as autosomal dominant distal myopathy with vocal cord and pharyngeal weakness. We previously found that spinal cord and muscle, organs involved in either ALS or distal myopathy, have relatively lower levels of Matrin 3 compared to the brain and other peripheral organs in the murine system. This suggests that these organs may be vulnerable to any changes in Matrin 3. In order to determine the role of Matrin 3 in these diseases, we created a transgenic mouse model for human wild-type Matrin 3 using the mouse prion promoter (MoPrP) on a FVB background. We identified three founder transgenic lines that produced offspring in which mice developed either hindlimb paresis or paralysis with hindlimb and forelimb muscle atrophy. Muscles of affected mice showed a striking increase in nuclear Matrin 3, as well as the presence of rounded fibers, vacuoles, nuclear chains, and subsarcolemmal nuclei. Immunoblot analysis of the gastrocnemius muscle from phenotypic mice showed increased levels of Matrin 3 products migrating at approximately 120 (doublet), 90, 70, and 55 kDa. While there was no significant change in the levels of Matrin 3 in the spinal cord in the phenotypic mice, the ventral horn contained individual cells with cytoplasmic redistribution of Matrin 3, as well as gliosis. The phenotypes of these mice indicate that dysregulation of Matrin 3 levels is deleterious to neuromuscular function.
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Marangi G, Lattante S, Doronzio PN, Conte A, Tasca G, Monforte M, Patanella AK, Bisogni G, Meleo E, La Spada S, Zollino M, Sabatelli M. Matrin 3 variants are frequent in Italian ALS patients. Neurobiol Aging 2016; 49:218.e1-218.e7. [PMID: 28029397 DOI: 10.1016/j.neurobiolaging.2016.09.023] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 09/01/2016] [Accepted: 09/29/2016] [Indexed: 11/28/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder characterized by loss of motor neurons in the primary motor cortex, brainstem, and spinal cord. Recently, missense variants in MATR3 were identified in familial and sporadic ALS patients, but very few additional ALS patients have been reported so far. The p.S85C MATR3 variant was previously associated to a different phenotype, namely a distal myopathy associated with dysphagia and dysphonia. Here, we assessed the contribution of MATR3 variants in a cohort of 322 Italian ALS patients. We identified 5 different missense MATR3 variants (p.Q66K, p.G153C, p.E664A, p.S707L, and p.N787S) in 6 patients (1.9%). None of our patients showed signs of myopathy at electrophysiological examination. Muscle biopsy, performed in 2 patients, showed neurogenic changes and normal nuclear staining with anti-matrin 3 antibody. Our results confirm that MATR3 variants are associated with ALS and suggest that they are more frequent in Italian ALS patients. Further studies are needed to elucidate the pathogenic significance of identified variants in sporadic and familial ALS.
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Affiliation(s)
- Giuseppe Marangi
- Institute of Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Serena Lattante
- Institute of Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | | | - Amelia Conte
- Department of Geriatrics, Neurosciences and Orthopedics, Clinic Center NEMO-Roma, Institute of Neurology, Catholic University School of Medicine, Rome, Italy
| | - Giorgio Tasca
- Don Carlo Gnocchi ONLUS Foundation, Milan, Italy; Department of Geriatrics, Neurosciences and Orthopedics, Institute of Neurology, Catholic University School of Medicine, Rome, Italy
| | - Mauro Monforte
- Department of Geriatrics, Neurosciences and Orthopedics, Institute of Neurology, Catholic University School of Medicine, Rome, Italy
| | - Agata Katia Patanella
- Department of Geriatrics, Neurosciences and Orthopedics, Clinic Center NEMO-Roma, Institute of Neurology, Catholic University School of Medicine, Rome, Italy
| | - Giulia Bisogni
- Department of Geriatrics, Neurosciences and Orthopedics, Clinic Center NEMO-Roma, Institute of Neurology, Catholic University School of Medicine, Rome, Italy
| | - Emiliana Meleo
- Department of Geriatrics, Neurosciences and Orthopedics, Clinic Center NEMO-Roma, Institute of Neurology, Catholic University School of Medicine, Rome, Italy
| | | | - Marcella Zollino
- Institute of Genomic Medicine, Catholic University School of Medicine, Rome, Italy
| | - Mario Sabatelli
- Department of Geriatrics, Neurosciences and Orthopedics, Clinic Center NEMO-Roma, Institute of Neurology, Catholic University School of Medicine, Rome, Italy.
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Palmio J, Evilä A, Bashir A, Norwood F, Viitaniemi K, Vihola A, Huovinen S, Straub V, Hackman P, Hirano M, Bushby K, Udd B. Re-evaluation of the phenotype caused by the common MATR3 p.Ser85Cys mutation in a new family. J Neurol Neurosurg Psychiatry 2016; 87:448-50. [PMID: 25952333 DOI: 10.1136/jnnp-2014-309349] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Accepted: 04/14/2015] [Indexed: 12/11/2022]
Affiliation(s)
- Johanna Palmio
- Department of Neurology, Neuromuscular Research Centre, Tampere University and University Hospital, Tampere, Finland
| | - Anni Evilä
- Folkhälsan Institute of Genetics and the Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Ayat Bashir
- Newcastle University, Newcastle upon Tyne, UK
| | - Fiona Norwood
- Department of Neurology, King's College Hospital, London, UK
| | - Kati Viitaniemi
- Department of Neurology, Neuromuscular Research Centre, Tampere University and University Hospital, Tampere, Finland
| | - Anna Vihola
- Folkhälsan Institute of Genetics and the Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Sanna Huovinen
- Department of Pathology, Fimlab Laboratories, Tampere University Hospital, Tampere, Finland
| | - Volker Straub
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Newcastle upon Tyne, UK
| | - Peter Hackman
- Folkhälsan Institute of Genetics and the Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland
| | - Michio Hirano
- Department of Neurology, Columbia University Medical Centre, New York, New York, USA
| | - Kate Bushby
- Institute of Genetic Medicine, International Centre for Life, Newcastle University, Newcastle upon Tyne, UK
| | - Bjarne Udd
- Department of Neurology, Neuromuscular Research Centre, Tampere University and University Hospital, Tampere, Finland Folkhälsan Institute of Genetics and the Department of Medical Genetics, Haartman Institute, University of Helsinki, Helsinki, Finland Department of Neurology, Vasa Central Hospital, Vasa, Finland
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Abstract
Amyotrophic lateral sclerosis (ALS) is the most common adult-onset motor neuron disease. It is characterized by neuronal loss and degeneration of the upper motor neurons (UMNs) and lower motor neurons (LMNs), and is usually fatal due to respiratory failure within 3–5 years of onset. Although approximately 5–10 % of patients with ALS have an inherited form of the disease, the distinction between hereditary and apparently sporadic ALS (SALS) seems to be artificial. Thus, genetic factors play a role in all types of ALS, to a greater or lesser extent. During the decade of upheaval, the evolution of molecular genetics technology has rapidly advanced our genetic knowledge about the causes of ALS, and the relationship between the genetic subtypes and clinical phenotype. In this review, we will focus on the possible genotype-phenotype correlation in hereditary ALS. Uncovering the identity of the genetic factors in ALS will not only improve the accuracy of ALS diagnosis, but may also provide new approaches for preventing and treating the disease.
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Affiliation(s)
- Satoshi Yamashita
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556 Japan
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto, 860-8556 Japan
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Lin KP, Tsai PC, Liao YC, Chen WT, Tsai CP, Soong BW, Lee YC. Mutational analysis of MATR3 in Taiwanese patients with amyotrophic lateral sclerosis. Neurobiol Aging 2015; 36:2005.e1-4. [PMID: 25771394 DOI: 10.1016/j.neurobiolaging.2015.02.008] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Revised: 02/01/2015] [Accepted: 02/07/2015] [Indexed: 11/26/2022]
Abstract
Mutations in the MATR3 gene were just recently identified to cause familial amyotrophic lateral sclerosis, and their role in amyotrophic lateral sclerosis (ALS) in various populations remains unclear. The aim of this study was to determine the frequency and spectrum of mutations in MATR3 in a Taiwanese ALS cohort of Han Chinese origin. Mutational analyses of MATR3 were carried out by direct nucleotide sequencing in a cohort of 207 unrelated patients with ALS. Among them, the genetic diagnoses of 169 patients remained elusive after mutations in SOD1, C9ORF72, TARDBP, FUS, ATXN2, OPTN, VCP, UBQLN2, SQSTM1, PFN1, HNRNPA1, and HNRNPA2B1 had been excluded. We identified 1 heterozygous missense mutation, p.Ala72Thr (c.214G>A), in 1 patient with bulbar-onset and apparently sporadic ALS. The frequency of MATR3 mutations in ALS patients in Taiwan is, therefore, approximately 0.5% (1 of 207). This study reports a novel MATR3 mutation and stresses on the importance to consider MATR3 mutation as a possible etiology of ALS.
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Affiliation(s)
- Kon-Ping Lin
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Pei-Chien Tsai
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan; Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Yi-Chu Liao
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Wei-Ting Chen
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ching-Piao Tsai
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Bing-Wen Soong
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan; Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - Yi-Chung Lee
- Department of Neurology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Neurology, National Yang-Ming University School of Medicine, Taipei, Taiwan; Brain Research Center, National Yang-Ming University, Taipei, Taiwan.
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