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Krasselt M, Schober R, Weis J, Baum P, Baerwald CGO, Seifert O. A Primary Myopathy Complicating Long-lasting Polymyalgia Rheumatica. J Clin Rheumatol 2021; 27:e28-e29. [PMID: 31609812 DOI: 10.1097/rhu.0000000000001220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Marco Krasselt
- From the Division of Rheumatology, Medical Department III-Endocrinology, Nephrology and Rheumatology, Department of Internal Medicine, Neurology and Dermatology, University of Leipzig Medical Centre
| | - Ralf Schober
- Department of Pathology, University of Leipzig, Leipzig
| | - Joachim Weis
- Institute for Neuropathology, University of Aachen, Aachen
| | - Petra Baum
- Department of Neurology, Department of Internal Medicine, Neurology and Dermatology, University of Leipzig Medical Centre, Leipzig, Germany
| | - Christoph G O Baerwald
- From the Division of Rheumatology, Medical Department III-Endocrinology, Nephrology and Rheumatology, Department of Internal Medicine, Neurology and Dermatology, University of Leipzig Medical Centre
| | - Olga Seifert
- From the Division of Rheumatology, Medical Department III-Endocrinology, Nephrology and Rheumatology, Department of Internal Medicine, Neurology and Dermatology, University of Leipzig Medical Centre
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Zukosky K, Meilleur K, Traynor BJ, Dastgir J, Medne L, Devoto M, Collins J, Rooney J, Zou Y, Yang ML, Gibbs JR, Meier M, Stetefeld J, Finkel RS, Schessl J, Elman L, Felice K, Ferguson TA, Ceyhan-Birsoy O, Beggs AH, Tennekoon G, Johnson JO, Bönnemann CG. Association of a Novel ACTA1 Mutation With a Dominant Progressive Scapuloperoneal Myopathy in an Extended Family. JAMA Neurol 2015; 72:689-98. [PMID: 25938801 DOI: 10.1001/jamaneurol.2015.37] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
IMPORTANCE New genomic strategies can now be applied to identify a diagnosis in patients and families with previously undiagnosed rare genetic conditions. The large family evaluated in the present study was described in 1966 and now expands the phenotype of a known neuromuscular gene. OBJECTIVE To determine the genetic cause of a slowly progressive, autosomal dominant, scapuloperoneal neuromuscular disorder by using linkage and exome sequencing. DESIGN, SETTING, AND PARTICIPANTS Fourteen affected individuals in a 6-generation family with a progressive scapuloperoneal disorder were evaluated. Participants were examined at pediatric, neuromuscular, and research clinics from March 1, 2005, to May 31, 2014. Exome and linkage were performed in genetics laboratories of research institutions. MAIN OUTCOMES AND MEASURES Examination and evaluation by magnetic resonance imaging, ultrasonography, electrodiagnostic studies, and muscle biopsies (n = 3). Genetic analysis included linkage analysis (n = 17) with exome sequencing (n = 7). RESULTS Clinical findings included progressive muscle weakness in an initially scapuloperoneal and distal distribution, including wrist extensor weakness, finger and foot drop, scapular winging, mild facial weakness, Achilles tendon contractures, and diminished or absent deep tendon reflexes. Both age at onset and progression of the disease showed clinical variability within the family. Muscle biopsy specimens demonstrated type I fiber atrophy and trabeculated fibers without nemaline rods. Analysis of exome sequences within the linkage region (4.8 megabases) revealed missense mutation c.591C>A p.Glu197Asp in a highly conserved residue in exon 4 of ACTA1. The mutation cosegregated with disease in all tested individuals and was not present in unaffected individuals. CONCLUSIONS AND RELEVANCE This family defines a new scapuloperoneal phenotype associated with an ACTA1 mutation. A highly conserved protein, ACTA1 is implicated in multiple muscle diseases, including nemaline myopathy, actin aggregate myopathy, fiber-type disproportion, and rod-core myopathy. To our knowledge, mutations in Glu197 have not been reported previously. This residue is highly conserved and located in an exposed position in the protein; the mutation affects the intermolecular and intramolecular electrostatic interactions as shown by structural modeling. The mutation in this residue does not appear to lead to rod formation or actin accumulation in vitro or in vivo, suggesting a different molecular mechanism from that of other ACTA1 diseases.
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Affiliation(s)
- Kristen Zukosky
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
| | - Katherine Meilleur
- National Institute of Nursing Research, National Institutes of Health, Bethesda, Maryland
| | - Bryan J Traynor
- Neuromuscular Diseases Research Section, Laboratory of Neurogenetics, Porter Neuroscience Research Center, National Institute on Aging, National Institutes of Health, Bethesda, Maryland
| | - Jahannaz Dastgir
- Division of Child Neurology, Columbia University Medical Center, New York, New York
| | - Livija Medne
- Department of Neurology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Marcella Devoto
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia7Department of Biostatistics and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia8Department of Molecular Medicine, Universit
| | - James Collins
- Department of Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jachinta Rooney
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland11Research Center for Genetic Medicine, Children's National Medical Center, Washington, DC
| | - Yaqun Zou
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
| | - Michele L Yang
- Department of Pediatrics and Neurology, Children's Hospital Colorado, Aurora
| | - J Raphael Gibbs
- Computational Biology Core, Laboratory of Neurogenetics, Porter Neuroscience Research Center, National Institute on Aging, National Institutes of Health, Bethesda, Maryland
| | - Markus Meier
- Department of Chemistry, Microbiology, Biochemistry, and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Joerg Stetefeld
- Department of Chemistry, Microbiology, Biochemistry, and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Richard S Finkel
- Department of Pediatrics, Nemours Children's Hospital, Orlando, Florida
| | - Joachim Schessl
- Department of Neurology, Friedrich-Baur Institute, Ludwig-Maximillans University of Munich, Munich, Germany
| | - Lauren Elman
- Department of Neurology, University of Pennsylvania, Philadelphia
| | - Kevin Felice
- Department of Neuromuscular Medicine, Hospital for Special Care, New Britain, Connecticut
| | - Toby A Ferguson
- Shriners Pediatric Research Center, Department of Neurology, Temple University, Philadelphia, Pennsylvania
| | - Ozge Ceyhan-Birsoy
- The Manton Center for Orphan Disease Research, Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Alan H Beggs
- The Manton Center for Orphan Disease Research, Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Gihan Tennekoon
- Department of Neurology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Janel O Johnson
- Neuromuscular Diseases Research Section, Laboratory of Neurogenetics, Porter Neuroscience Research Center, National Institute on Aging, National Institutes of Health, Bethesda, Maryland
| | - Carsten G Bönnemann
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
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Abstract
BACKGROUND AND PURPOSE At present, more than 20 different forms of limb-girdle muscular dystrophies (LGMDs) are known (at least 7 autosomal dominant and 14 autosomal recessive). Although these different forms show some typical phenotypic characteristics, the existing clinical overlap makes their differential diagnosis difficult. Limb-girdle muscular dystrophy type 2 (LGMD2A) is the most prevalent LGMD in many European as well as Brazilian communities and is caused by mutations in the gene CAPN3. Laboratory testing, such as calpain immunohistochemistry and Western-blot analysis, is not totally reliable, since up to 20% of molecularly confirmed LGMD2A show normal content of calpain 3 and a third of LGMD2A biopsies have normal calpain 3 proteo-lytic activity in the muscle. Thus, genetic testing is considered as the only reliable diagnostic criterion in LGMD2A. MATERIAL AND METHODS In an attempt to find a correlation between genotype and muscle pathology in limb-girdle muscular dystrophy 2A we performed histopathological investigation of a group of 31 patients subdivided according to the type of pathologic CAPN3 gene mutation. RESULTS In all biopsies typical features of muscular dystrophy such as fiber necrosis and regeneration, variation in fiber size and fibrosis were noted. Lobulated fibers were often encountered in the muscle biopsies of LGMD2A patients. Such fibers were more frequent in patients with 550delA mutation. CONCLUSIONS These findings may be helpful in establishing diagnostic strategies in LGMD.
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Irodenko VS, Lee HS, de Armond SJ, Layzer RB. Adult nemaline myopathy with trabecular muscle fibers. Muscle Nerve 2009; 39:871-5. [PMID: 19229965 DOI: 10.1002/mus.21190] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The term "trabecular myopathy" has been used to designate a syndrome resembling limb-girdle muscular dystrophy in which the predominant pathological feature is an abundance of lobulated or trabecular muscle fibers. However, the validity of this nosological entity has not been verified. Herein we describe a 63-year-old man with a severe, progressive myopathy who exhibited the typical pathological features of both trabecular myopathy and nemaline myopathy in association with a biclonal gammopathy. In this case, adult-onset nemaline myopathy was probably the primary disease process. The diagnostic significance of trabecular muscle fibers remains uncertain.
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Affiliation(s)
- Viktoriya S Irodenko
- Department of Neurology, University of California, School of Medicine, 505 Parnassus Avenue, / San Francisco, California 94143-0114, USA.
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Nikawa T, Ishidoh K, Hirasaka K, Ishihara I, Ikemoto M, Kano M, Kominami E, Nonaka I, Ogawa T, Adams GR, Baldwin KM, Yasui N, Kishi K, Takeda S. Skeletal muscle gene expression in space-flown rats. FASEB J 2004; 18:522-4. [PMID: 14715702 DOI: 10.1096/fj.03-0419fje] [Citation(s) in RCA: 147] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Skeletal muscles are vulnerable to marked atrophy under microgravity. This phenomenon is due to the transcriptional alteration of skeletal muscle cells to weightlessness. To further investigate this issue at a subcellular level, we examined the expression of approximately 26,000 gastrocnemius muscle genes in space-flown rats by DNA microarray analysis. Comparison of the changes in gene expression among spaceflight, tail-suspended, and denervated rats revealed that such changes were unique after spaceflight and not just an extension of simulated weightlessness. The microarray data showed two spaceflight-specific gene expression patterns: 1) imbalanced expression of mitochondrial genes with disturbed expression of cytoskeletal molecules, including putative mitochondria-anchoring proteins, A-kinase anchoring protein, and cytoplasmic dynein, and 2) up-regulated expression of ubiquitin ligase genes, MuRF-1, Cbl-b, and Siah-1A, which are rate-limiting enzymes of muscle protein degradation. Distorted expression of cytoskeletal genes during spaceflight resulted in dislocation of the mitochondria in the cell. Several oxidative stress-inducible genes were highly expressed in the muscle of spaceflight rats. We postulate that mitochondrial dislocation during spaceflight has deleterious effects on muscle fibers, leading to atrophy in the form of insufficient energy provision for construction and leakage of reactive oxygen species from the mitochondria.
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Affiliation(s)
- Takeshi Nikawa
- Department of Nutrition, The University of Tokushima School of Medicine, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
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Figarella-Branger D, El-Dassouki M, Saenz A, Cobo AM, Malzac P, Tong S, Cassotte E, Azulay JP, Pouget J, Pellissier JF. Myopathy with lobulated muscle fibers: evidence for heterogeneous etiology and clinical presentation. Neuromuscul Disord 2002; 12:4-12. [PMID: 11731278 DOI: 10.1016/s0960-8966(01)00245-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The clinico-pathological features of 17 patients displaying a myopathy with lobulated (trabeculated) fibers are reported. All these patients had a limb girdle phenotype and at least 20% of lobulated fibers in their muscle biopsies. There were ten females and seven males. The onset of symptoms ranged from 2 to 55 years (mean 24). The average age at the time of muscle biopsy was 39 (range 3-63). Interestingly, in six patients, high prevalence of lobulated fibers was observed at the second biopsy only, performed on average 11 years after the first or in another muscle. Six patients had a suggestively positive family history. Facial weakness was noted in two patients (genetic study confirmed FSH dystrophy). The course and the severity of weakness varied from one patient to another. Immunohistochemistry and Western blot analyses revealed one Duchenne carrier, one alpha-sarcoglycanopathy, no dysferlinopathy and four calpain deficiencies (including one patient with FSH dystrophy), but SSCP revealed mutation in the calpain gene in only one of the patients. These results show that (1) myopathies with lobulated fibers are clinically and genetically heterogeneous, (2) lack of calpain expression by Western blot analysis is not always associated with null mutation, (3) a molecular diagnosis is made in less than 40% of myopathy with lobulated fibers, (4) when observed, lobulated fibers are most prominent in proximal muscles and require time to appear.
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Affiliation(s)
- D Figarella-Branger
- Service d'Anatomie Pathologique et de Neuropathologie et Laboratoire de Biopathologie Nerveuse et Musculaire La Timone, IBDM, 27 Boulevard Jean Moulin, 13005 Marseille, France.
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Chae J, Minami N, Jin Y, Nakagawa M, Murayama K, Igarashi F, Nonaka I. Calpain 3 gene mutations: genetic and clinico-pathologic findings in limb-girdle muscular dystrophy. Neuromuscul Disord 2001; 11:547-55. [PMID: 11525884 DOI: 10.1016/s0960-8966(01)00197-3] [Citation(s) in RCA: 83] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Mutations in the calpain 3 gene have been proven to be responsible for limb-girdle muscular dystrophy (LGMD) type 2A. To determine the incidence and genotypes of the calpain 3 (p94) gene mutations in Japanese LGMD patients, we sequenced the gene in 80 patients with clinical characteristics of autosomal recessive or sporadic LGMD. We identified 13 distinct pathogenic mutations in 21 patients (26%), including seven missense mutations, four splice-site mutations and two insertions in which six were novel mutations. Among the 21 patients, 15 (71%) had three types of the common missense (G233V, R461C, D707G) and one insertion (1795-1796insA) mutation. The patients had slowly progressive muscle weakness with age of onset of the disease varying from 6 to 52 years, averaging 20.9. The most striking pathologic findings were the presence of lobulated fibers in 14 patients, especially in the advanced stages. Differing from Duchenne and Becker muscular dystrophy, opaque (hypercontracted) fibers were very rarely seen. These findings may be helpful in establishing diagnostic screening strategies in Japanese LGMD patients.
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Affiliation(s)
- J Chae
- Department of Ultrastructural Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Kodaira, Tokyo 187-8502, Japan
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