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Sarparanta J, Jonson P, Luque H, Vihola A, Udd B. DISTAL MYOPATHIES. Neuromuscul Disord 2021. [DOI: 10.1016/j.nmd.2021.07.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Johari M, Savarese M, Vihola A, Jokela M, Torella A, Piluso G, Jonson P, Luque H, Magot A, Magri F, Kornblum C, Stojkovic T, Romero N, Lahermo P, Donner K, Nigro V, Hackman P, Udd B. NEW GENES IN NEUROMUSCULAR DISEASES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Sarparanta J, Jonson P, Vihola A, Luque H, Reimann J, Kornblum C, Udd B. HEREDITARY NEUROPATHIES & ALS. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Jonson P, Sarparanta J, Kawan S, Luque H, Jokela M, Udd B. LGMD AUTOSOMAL RESSESSIVE AND DOMINANT. Neuromuscul Disord 2018. [DOI: 10.1016/j.nmd.2018.06.136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Vihola A, Luque H, Savarese M, Penttilä S, Lindfors M, Leturcq F, Eymard B, Tasca G, Brais B, Conte T, Charton K, Richard I, Udd B. Diagnostic anoctamin-5 protein defect in patients with ANO5-mutated muscular dystrophy. Neuropathol Appl Neurobiol 2017; 44:441-448. [PMID: 28489263 DOI: 10.1111/nan.12410] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 04/19/2017] [Accepted: 05/10/2017] [Indexed: 12/17/2022]
Abstract
AIMS Previously, detection of ANO5 protein has been complicated by unspecific antibodies, most of which have not identified the correct protein. The aims of the study were to specify ANO5 protein expression in human skeletal muscle, and to investigate if the ANO5 protein levels are affected by different ANO5 mutations in anoctaminopathy patients. METHODS Four different antibodies were tested for ANO5 specificity. A sample preparation method compatible with membrane proteins, combined with tissue fractionation was used to determine ANO5 expression in cell cultures expressing ANO5, in normal muscles and eight patient biopsies with six different ANO5 mutations in homozygous or compound heterozygous states, and in other dystrophies. RESULTS Only one specific monoclonal N-terminal ANO5 antibody was efficient in detecting the protein, showing that ANO5 is expressed as a single 107 kD polypeptide in human skeletal muscle. The truncating mutations c.191dupA and c.1261C>T were found to abolish ANO5 expression, whereas the studied point mutations had variable effects; however, all the ANO5 mutations resulted in clearly reduced ANO5 expression in the patient muscle membrane fraction. Attempts to detect ANO5 using immunohistochemistry were not yet successful. CONCLUSIONS The data presented here indicate that the ANO5 protein expression is decreased in ANO5-mutated muscular dystrophy and that most of the non-truncating pathogenic ANO5 mutations likely destabilize the protein and cause its degradation. The method described here allows direct analysis of human ANO5 protein, which can be used in diagnostics, for evaluating the pathogenicity of the potentially harmful ANO5 variants of uncertain significance.
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Affiliation(s)
- A Vihola
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - H Luque
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - M Savarese
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland
| | - S Penttilä
- Neuromuscular Research Center, University and University Hospital of Tampere, Tampere, Finland
| | - M Lindfors
- Neuromuscular Research Center, University and University Hospital of Tampere, Tampere, Finland
| | - F Leturcq
- Laboratoire de génétique et biologie moléculaire, hôpital Cochin, AP-HP, Université Paris Descartes-Sorbonne Paris Cité, Paris, France
| | - B Eymard
- Institute of Myology, Pitié-Salpêtrière Hospital, Paris, France
| | - G Tasca
- Istituto di Neurologia, Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario "A. Gemelli", Rome, Italy
| | - B Brais
- Montreal Neurological Institute, McGill University, Montreal, Canada
| | - T Conte
- Montreal Neurological Institute, McGill University, Montreal, Canada
| | - K Charton
- INSERM U951, INTEGRARE Research Unit and Généthon, Evry, France
| | - I Richard
- INSERM U951, INTEGRARE Research Unit and Généthon, Evry, France
| | - B Udd
- Folkhälsan Institute of Genetics and Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, 00014, Finland.,Neuromuscular Research Center, University and University Hospital of Tampere, Tampere, Finland.,Department of Neurology, Vaasa Central Hospital, Vaasa, Finland
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Jonson P, Evilä A, Stojkovic T, Chapon F, Luque H, Hackman P, Udd B. A novel mutation in DNAJB6 causes LGMD1D in two French families. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sarparanta J, Charton K, Luque H, Jonson P, Richard I, Udd B. P.3.12 Characterization of CAPN3-dependent proteolysis of C-terminal titin. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Jonson P, Sarparanta J, Luque H, Udd B. P.5.14 The co-chaperone DNAJB6 – mutated in LGMD1D – and its role in handling of aggregation-prone muscle proteins. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hackman P, Sarparanta J, Lehtinen S, Naukkarinen A, Evilä A, Jonson P, Luque H, Screen M, Edström L, Udd B. G.O.1 Welander distal myopathy is caused by a mutated RNA binding protein. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Jonson P, Sarparanta J, Luque H, Udd B. G.P.38 The LGMD1D gene DNAJB6: Its role in sarcomeric protein maintenance and aggregation. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Jonson P, Sarparanta J, Luque H, Vihola A, Udd B. P2.24 Is DNAJB6 part of the chaperone-assisted selective autophagy machinery? Neuromuscul Disord 2011. [DOI: 10.1016/j.nmd.2011.06.847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Muelas N, Hackman P, Luque H, Suominen T, Espinós C, Garcés-Sánchez M, Sevilla T, Azorín I, Millán JM, Udd B, Vílchez JJ. Spanish MYH7 founder mutation of Italian ancestry causing a large cluster of Laing myopathy patients. Clin Genet 2011; 81:491-4. [DOI: 10.1111/j.1399-0004.2011.01667.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Muelas N, Hackman P, Luque H, Garcés-Sánchez M, Azorín I, Suominen T, Sevilla T, Mayordomo F, Gómez L, Martí P, María Millán J, Udd B, Vílchez JJ. MYH7 gene tail mutation causing myopathic profiles beyond Laing distal myopathy. Neurology 2010; 75:732-41. [PMID: 20733148 DOI: 10.1212/wnl.0b013e3181eee4d5] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To describe a wide range of clinical and pathologic myopathic profiles associated with the p.K1729del mutation in the MYH7 gene, known to cause Laing distal myopathy. METHODS A study conducted in the Safor region (Spain), setting of a large cluster of patients. Clinical, neurophysiologic, muscle imaging, and muscle biopsy studies and MYH7 gene sequencing were investigated in 32 patients from 4 kindreds. Data from 36 deceased or nonexamined patients were collected from hospital records or relatives. RESULTS Onset ranged from congenital to the 6th decade. All patients presented weakness of great toe/ankle dorsiflexors and many had associated neck flexor, finger extensor, and mild facial weakness. In most cases, involvement of proximal and axial muscles was observed either clinically or by muscle imaging, sometimes giving rise to scapuloperoneal and limb-girdle syndromes. Disabling myalgias, skeletal deformities, and dilated cardiomyopathy in one patient were associated features. Life expectancy was not reduced but the spectrum of disability ranged from asymptomatic to wheelchair confined. Electromyographic neurogenic features were frequently recorded. Muscle fiber type disproportion, core/minicore lesions, and mitochondrial abnormalities were the most relevant pathologic alterations. All patients carried the p.K1729del mutation in MYH7. CONCLUSIONS The p.K1729del mutation in the MYH7 gene expresses notable clinical variability and electromyographic and pathologic features that can lead to the misdiagnosis of neurogenic atrophies, congenital myopathies, or mitochondrial myopathies. Mutations in genes encoding other sarcomeric and reticulo-sarcoplasmic proteins involved in calcium regulation share pathologic characteristics with our patients, suggesting a possible pathogenetic connection.
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Affiliation(s)
- N Muelas
- Department of Neurology, Hospital Universitario La Fe, Avda. Campanar 21, 46009 Valencia, Spain
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Mahjneh I, Sandell S, Sarparanta J, Luque H, Huovinen S, Haapasalo H, Hackman P, Udd B. PO19-WE-13 Autosomal dominant limb-girdle muscular dystrophy linked to chromosome 7Q36: description of a phenotype. J Neurol Sci 2009. [DOI: 10.1016/s0022-510x(09)71020-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hackman P, Sandell S, Sarparanta J, Luque H, Huovinen S, Raheem O, Jonson P, Mahjneh I, Udd B. G.P.10.03 Refinement of the LGMD1 locus on 7q36 by genotyping new Finnish families. Neuromuscul Disord 2009. [DOI: 10.1016/j.nmd.2009.06.241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Hackman P, Hollo S, Luque H, Tokola M, Kere J, Edstrom L, Ahlberg G, Udd B. D.P.3.07 Welander distal myopathy: The evasive gene. Neuromuscul Disord 2008. [DOI: 10.1016/j.nmd.2008.06.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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