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Urtizberea JA, Severa G, Malfatti E. Metabolic Myopathies in the Era of Next-Generation Sequencing. Genes (Basel) 2023; 14:genes14050954. [PMID: 37239314 DOI: 10.3390/genes14050954] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/07/2023] [Accepted: 04/18/2023] [Indexed: 05/28/2023] Open
Abstract
Metabolic myopathies are rare inherited disorders that deserve more attention from neurologists and pediatricians. Pompe disease and McArdle disease represent some of the most common diseases in clinical practice; however, other less common diseases are now better-known. In general the pathophysiology of metabolic myopathies needs to be better understood. Thanks to the advent of next-generation sequencing (NGS), genetic testing has replaced more invasive investigations and sophisticated enzymatic assays to reach a final diagnosis in many cases. The current diagnostic algorithms for metabolic myopathies have integrated this paradigm shift and restrict invasive investigations for complicated cases. Moreover, NGS contributes to the discovery of novel genes and proteins, providing new insights into muscle metabolism and pathophysiology. More importantly, a growing number of these conditions are amenable to therapeutic approaches such as diets of different kinds, exercise training protocols, and enzyme replacement therapy or gene therapy. Prevention and management-notably of rhabdomyolysis-are key to avoiding serious and potentially life-threatening complications and improving patients' quality of life. Although not devoid of limitations, the newborn screening programs that are currently mushrooming across the globe show that early intervention in metabolic myopathies is a key factor for better therapeutic efficacy and long-term prognosis. As a whole NGS has largely increased the diagnostic yield of metabolic myopathies, but more invasive but classical investigations are still critical when the genetic diagnosis is unclear or when it comes to optimizing the follow-up and care of these muscular disorders.
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Affiliation(s)
| | - Gianmarco Severa
- Department of Medical, Surgical and Neurological Sciences, Neurology-Neurophysiology Unit, University of Siena, Policlinico Le Scotte, Viale Bracci 1, 5310 Siena, Italy
- Université Paris Est, U955, IMRB, INSERM, APHP, Centre de Référence de Pathologie Neuromusculaire Nord-Est-Ile-de-France, Henri Mondor Hospital, 94000 Créteil, France
| | - Edoardo Malfatti
- Université Paris Est, U955, IMRB, INSERM, APHP, Centre de Référence de Pathologie Neuromusculaire Nord-Est-Ile-de-France, Henri Mondor Hospital, 94000 Créteil, France
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Nilipour Y, Fatehi F, Sanatinia S, Bradshaw A, Duff J, Lochmüller H, Horvath R, Nafissi S. Multiple acyl-coenzyme A dehydrogenase deficiency shows a possible founder effect and is the most frequent cause of lipid storage myopathy in Iran. J Neurol Sci 2020; 411:116707. [PMID: 32007756 DOI: 10.1016/j.jns.2020.116707] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 01/20/2020] [Accepted: 01/22/2020] [Indexed: 01/30/2023]
Abstract
INTRODUCTION Multiple acyl-coenzyme A dehydrogenase deficiency disorder (MADD) is a relatively rare disorders of lipid metabolism. This study aimed to investigate the demographic, clinical, and genetic features of MADD in Iran. METHODS Twenty-nine patients with a definite diagnosis of lipid storage myopathy were recruited. All patients were tested for mutation in the ETFDH gene, and 19 had a biallelic mutation in this gene. RESULTS Of 19 patients with definite mutations, 11 (57.9%) were female, and the median age was 31 years. Twelve patients had c.1130 T > C (p.L377P) mutation in exon 10. Two patients had two novel heterozygote pathogenic variants (c.679C > T (p.P227S) in exon 6 and c.814G > A (p.G272R) in exon 7) and two patients had c.1699G > A (p.E567K) in exon 13. Before treatment, the median muscle power was 4.6 (IQR: 4-4.7) that increased to 5 (IQR: 5-5) after treatment (Z = -3.71, p = .000). The median CK was 1848 U/l (IQR: 1014-3473) before treatment, which declined to 188 U/l (IQR: 117-397) after treatment (Z = -3.41, p = .001). Sixteen patients (84.2%) had full recovery after the treatment. The disease onset was earlier (12 years of age; IQR: 6-18) in patients with homozygous c.1130 T > C; p.(L377P) mutation compared to other ETFDH mutations (30 years of age; IQR: 20-35) (p = .00). DISCUSSION MADD has different clinical presentations. As the patients respond favorably to treatment, early diagnosis and treatment may prevent the irreversible complications of the disease.
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Affiliation(s)
- Yalda Nilipour
- Pediatric pathology research center, Research institute for children's health, AND Mofid Children Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farzad Fatehi
- Neurology Department, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran; Aix Marseille University, CNRS (UMR 7339), Centre de Resonance Magnétique Biologique et Medicale, Faculte de Medecine, 27 bd. J. Moulin, 13005 Marseille, France
| | - Saleheh Sanatinia
- Neurology Department, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Anna Bradshaw
- Wellcome Centre for Mitochondrial Research, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Jennifer Duff
- Wellcome Centre for Mitochondrial Research, Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | - Hanns Lochmüller
- Department of Neuropediatrics and Muscle Disorders, Medical Center - the University of Freiburg, Faculty of Medicine, Freiburg, Germany; Centro Nacional de Análisis Genómico (CNAG-CRG), Center for Genomic Regulation, Barcelona Institute of Science and Technology (BIST), Barcelona, Spain; Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada; Division of Neurology, Department of Medicine, The Ottawa Hospital, Ottawa, Canada
| | - Rita Horvath
- Department of Clinical Neurosciences, University of Cambridge School of Clinical Medicine, Cambridge, UK.
| | - Shahriar Nafissi
- Neurology Department, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
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Mamidi V, E. I, Shekar M, Elumalai R, Makkena VK, Chakola JJ, Bandi VK, Joy N, Matcha J. Pigment Nephropathy in a Patient With PYGM Gene Mutation. Kidney Int Rep 2019; 4:740-744. [PMID: 31080931 PMCID: PMC6506694 DOI: 10.1016/j.ekir.2019.01.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Varun Mamidi
- Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Indumathi E.
- Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
- Correspondence: E. Indumathi, Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Porur, Chennai, India 600116.
| | - Manikantan Shekar
- Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Ramprasad Elumalai
- Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Vamsi Krishna Makkena
- Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Jaiju James Chakola
- Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Varun Kumar Bandi
- Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Niranjana Joy
- Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
| | - Jayakumar Matcha
- Department of Nephrology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India
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Kollipara L, Buchkremer S, Weis J, Brauers E, Hoss M, Rütten S, Caviedes P, Zahedi RP, Roos A. Proteome Profiling and Ultrastructural Characterization of the Human RCMH Cell Line: Myoblastic Properties and Suitability for Myopathological Studies. J Proteome Res 2016; 15:945-55. [PMID: 26781476 DOI: 10.1021/acs.jproteome.5b00972] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Studying (neuro)muscular disorders is a major topic in biomedicine with a demand for suitable model systems. Continuous cell culture (in vitro) systems have several technical advantages over in vivo systems and became widely used tools for discovering physiological/pathophysiological mechanisms in muscle. In particular, myoblast cell lines are suitable model systems to study complex biochemical adaptations occurring in skeletal muscle and cellular responses to altered genetic/environmental conditions. Whereas most in vitro studies use extensively characterized murine C2C12 cells, a comprehensive description of an equivalent human cell line, not genetically manipulated for immortalization, is lacking. Therefore, we characterized human immortal myoblastic RCMH cells using scanning (SEM) and transmission electron microscopy (TEM) and proteomics. Among more than 6200 identified proteins we confirm the known expression of proteins important for muscle function. Comparing the RCMH proteome with two well-defined nonskeletal muscle cells lines (HeLa, U2OS) revealed a considerable enrichment of proteins important for muscle function. SEM/TEM confirmed the presence of agglomerates of cytoskeletal components/intermediate filaments and a prominent rough ER. In conclusion, our results indicate RMCH as a suitable in vitro model for investigating muscle function-related processes such as mechanical stress burden and mechanotransduction, EC coupling, cytoskeleton, muscle cell metabolism and development, and (ER-associated) myopathic disorders.
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Affiliation(s)
- Laxmikanth Kollipara
- Leibniz-Institut für Analytische Wissenschaften, ISAS e.V. , Otto-Hahn-Str. 6b, 44227 Dortmund, Germany
| | - Stephan Buchkremer
- Institute of Neuropathology, RWTH Aachen University Hospital , Pauwelsstrasse 30, D-52074 Aachen, Germany
| | - Joachim Weis
- Institute of Neuropathology, RWTH Aachen University Hospital , Pauwelsstrasse 30, D-52074 Aachen, Germany
| | - Eva Brauers
- Institute of Neuropathology, RWTH Aachen University Hospital , Pauwelsstrasse 30, D-52074 Aachen, Germany
| | - Mareike Hoss
- Electron Microscopic Facility, Institute of Pathology, RWTH Aachen University Hospital , D-52074 Aachen, Germany
| | - Stephan Rütten
- Electron Microscopic Facility, Institute of Pathology, RWTH Aachen University Hospital , D-52074 Aachen, Germany
| | - Pablo Caviedes
- Programa de Farmacología Molecular y Clínica, ICBM, Facultad de Medicina, Universidad de Chile , Santiago 1058, Chile
| | - René P Zahedi
- Leibniz-Institut für Analytische Wissenschaften, ISAS e.V. , Otto-Hahn-Str. 6b, 44227 Dortmund, Germany
| | - Andreas Roos
- Leibniz-Institut für Analytische Wissenschaften, ISAS e.V. , Otto-Hahn-Str. 6b, 44227 Dortmund, Germany.,Institute of Neuropathology, RWTH Aachen University Hospital , Pauwelsstrasse 30, D-52074 Aachen, Germany
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van den Engel-Hoek L, de Groot IJM, de Swart BJM, Erasmus CE. Feeding and Swallowing Disorders in Pediatric Neuromuscular Diseases: An Overview. J Neuromuscul Dis 2015; 2:357-369. [PMID: 27858755 PMCID: PMC5240596 DOI: 10.3233/jnd-150122] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Feeding and swallowing problems in infants and children have a great impact on health and wellbeing. The aim of this study was to provide an overview of recognized feeding and swallowing problems in different groups of children with neuromuscular diseases, based on relevant literature and expert opinion, and to propose recommendations for the assessment and treatment of these problems. Almost all pediatric neuromuscular diseases are accompanied by feeding and swallowing problems during the different phases of deglutition, problems that give rise to a wide variety of signs and symptoms, which emphasizes the importance of a comprehensive feeding and swallowing assessment by a speech and language therapist.
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Affiliation(s)
- Lenie van den Engel-Hoek
- Donders Centre for Neuroscience, Department of Rehabilitation, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Imelda J M de Groot
- Donders Centre for Neuroscience, Department of Rehabilitation, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Bert J M de Swart
- Donders Centre for Neuroscience, Department of Rehabilitation, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Corrie E Erasmus
- Donders Centre for Neuroscience, Department of Neurology, Radboud University Medical Center, Nijmegen, The Netherlands
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de Rezende Pinto WBV, de Souza PVS, Oliveira ASB. Normal muscle structure, growth, development, and regeneration. Curr Rev Musculoskelet Med 2015; 8:176-81. [PMID: 25860794 PMCID: PMC4596171 DOI: 10.1007/s12178-015-9267-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Knowledge about biochemical, structural and physiological aspects, and properties regarding the skeletal muscle has been widely obtained in the last decades. Muscle disorders, mainly represented in neuromuscular clinical practice by acquired and hereditary myopathies, are well-recognized and frequently diagnosed in practice. Most clinical complaints and biochemical characterizations of each myopathy depends on the appropriate knowledge and interpretation of pathological findings and their comparison with normal muscle findings. Great improvement has been obtained in the last decades mainly involving the mechanisms of normal muscle architecture and physiological function in the healthy individuals. Genetic mechanisms have also been widely studied. We provide an extensive literature review involving current knowledge regarding muscle cell structure and function and embryological and regenerative processes linked to muscle lesion. An updated comprehensive description involving the main nuclear genomic regulatory mechanisms of muscle regeneration and embryogenesis is provided in this review.
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Affiliation(s)
- Wladimir Bocca Vieira de Rezende Pinto
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), Estado de Israel Street, 899. Vila Clementino, São Paulo, SP 04022-002 Brazil
| | - Paulo Victor Sgobbi de Souza
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), Estado de Israel Street, 899. Vila Clementino, São Paulo, SP 04022-002 Brazil
| | - Acary Souza Bulle Oliveira
- Division of Neuromuscular Diseases, Department of Neurology and Neurosurgery, Federal University of São Paulo (UNIFESP), Estado de Israel Street, 899. Vila Clementino, São Paulo, SP 04022-002 Brazil
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