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Tazir M, Nouioua S. Distal hereditary motor neuropathies. Rev Neurol (Paris) 2024:S0035-3787(23)01111-6. [PMID: 38702287 DOI: 10.1016/j.neurol.2023.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 08/02/2022] [Revised: 07/30/2023] [Accepted: 09/29/2023] [Indexed: 05/06/2024]
Abstract
Distal hereditary motor neuropathies (dHMN) are a group of heterogeneous hereditary disorders characterized by a slowly progressive distal pure motor neuropathy. Electrophysiology, with normal motor and sensory conduction velocities, can suggest the diagnosis of dHMN and guide the genetic study. More than thirty genes are currently associated with HMNs, but around 60 to 70% of cases of dHMN remain uncharacterized genetically. Recent cohort studies showed that HSPB1, GARS, BICB2 and DNAJB2 are among the most frequent dHMN genes and that the prevalence of the disease was calculated as 2.14 and 2.3 per 100,000. The determination of the different genes involved in dHMNs made it possible to observe a genotypic overlap with some other neurogenetic disorders and other hereditary neuropathies such as CMT2, mainly with the HSPB1, HSPB8, BICD2 and TRPV4 genes of AD-inherited transmission and recently observed with SORD gene of AR transmission which seems relatively frequent and potentially curable. Distal hereditary motor neuropathy that predominates in the upper limbs is linked mainly to three genes: GARS, BSCL2 and REEP1, whereas dHMN with vocal cord palsy is associated with SLC5A7, DCTN1 and TRPV4 genes. Among the rare AR forms of dHMN like IGHMBP2 and DNAJB2, the SIGMAR1 gene mutations as well as VRK1 variants are associated with a motor neuropathy phenotype often associated with upper motoneuron involvement. The differential diagnosis of these latter arises with juvenile forms of amyotrophic lateral sclerosis, that could be caused also by variations of these genes, as well as hereditary spastic paraplegia. A differential diagnosis of dHMN related to Brown Vialetto Van Laere syndrome due to riboflavin transporter deficiency is important to consider because of the therapeutic possibility.
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Affiliation(s)
- Meriem Tazir
- Department of Neurology, University Hospital Mustapha Bacha, Algiers, Algeria; Neurosciences Laboratory, University Benyoucef Benkhedda, Algiers, Algeria.
| | - Sonia Nouioua
- Neurosciences Laboratory, University Benyoucef Benkhedda, Algiers, Algeria; Department of Neurology, EHS El Maham, Cherchell,Tipaza, Algeria
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Schuermans N, El Chehadeh S, Hemelsoet D, Gautheron J, Vantyghem MC, Nouioua S, Tazir M, Vigouroux C, Auclair M, Bogaert E, Dufour S, Okawa F, Hilbert P, Van Doninck N, Taquet MC, Rosseel T, De Clercq G, Debackere E, Van Haverbeke C, Cherif FR, Urtizberea JA, Chanson JB, Funalot B, Authier FJ, Kaya S, Terryn W, Callens S, Depypere B, Van Dorpe J, Poppe B, Impens F, Mizushima N, Depienne C, Jéru I, Dermaut B. Loss of phospholipase PLAAT3 causes a mixed lipodystrophic and neurological syndrome due to impaired PPARγ signaling. Nat Genet 2023; 55:1929-1940. [PMID: 37919452 DOI: 10.1038/s41588-023-01535-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 09/16/2023] [Indexed: 11/04/2023]
Abstract
Phospholipase A/acyltransferase 3 (PLAAT3) is a phospholipid-modifying enzyme predominantly expressed in neural and white adipose tissue (WAT). It is a potential drug target for metabolic syndrome, as Plaat3 deficiency in mice protects against diet-induced obesity. We identified seven patients from four unrelated consanguineous families, with homozygous loss-of-function variants in PLAAT3, who presented with a lipodystrophy syndrome with loss of fat varying from partial to generalized and associated with metabolic complications, as well as variable neurological features including demyelinating neuropathy and intellectual disability. Multi-omics analysis of mouse Plaat3-/- and patient-derived WAT showed enrichment of arachidonic acid-containing membrane phospholipids and a strong decrease in the signaling of peroxisome proliferator-activated receptor gamma (PPARγ), the master regulator of adipocyte differentiation. Accordingly, CRISPR-Cas9-mediated PLAAT3 inactivation in human adipose stem cells induced insulin resistance, altered adipocyte differentiation with decreased lipid droplet formation and reduced the expression of adipogenic and mature adipocyte markers, including PPARγ. These findings establish PLAAT3 deficiency as a hereditary lipodystrophy syndrome with neurological manifestations, caused by a PPARγ-dependent defect in WAT differentiation and function.
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Affiliation(s)
- Nika Schuermans
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Salima El Chehadeh
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U1258, CNRS-UMR7104, Université de Strasbourg, Strasbourg, France
- Laboratoire de Génétique Médicale, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg et INSERM, Strasbourg, France
| | | | - Jérémie Gautheron
- Sorbonne Université, INSERM UMRS_938, Centre de Recherche Saint-Antoine (CRSA), Paris, France
| | - Marie-Christine Vantyghem
- Endocrinology, Diabetology, Metabolism Department, National Competence Centre for Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS), Lille University Hospital, Lille, France
- University of Lille, INSERM U1190, European Genomic Institute for Diabetes, Lille, France
| | - Sonia Nouioua
- Department of Neurology of the EHS of Cherchell, University Centre of Blida, Tipaza, Algeria
- NeuroSciences Research Laboratory, University of Algiers Benyoucef Benkhedda, Algiers, Algeria
| | - Meriem Tazir
- NeuroSciences Research Laboratory, University of Algiers Benyoucef Benkhedda, Algiers, Algeria
- Department of Neurology, CHU Algiers (Mustapha Pacha Hospital), Algiers, Algeria
| | - Corinne Vigouroux
- Sorbonne Université, INSERM UMRS_938, Centre de Recherche Saint-Antoine (CRSA), Paris, France
- Assistance Publique-Hôpitaux de Paris, Saint-Antoine University Hospital, National Reference Center for Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS), Department of Endocrinology, Diabetology and Reproductive Endocrinology, and Department of Molecular Biology and Genetics, Paris, France
| | - Martine Auclair
- Sorbonne Université, INSERM UMRS_938, Centre de Recherche Saint-Antoine (CRSA), Paris, France
- Assistance Publique-Hôpitaux de Paris, Saint-Antoine University Hospital, National Reference Center for Rare Diseases of Insulin Secretion and Insulin Sensitivity (PRISIS), Department of Endocrinology, Diabetology and Reproductive Endocrinology, and Department of Molecular Biology and Genetics, Paris, France
| | - Elke Bogaert
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Sara Dufour
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- VIB-UGent Center for Medical Biotechnology, VIB, Ghent, Belgium
- VIB Proteomics Core, VIB, Ghent, Belgium
| | - Fumiya Okawa
- Department of Biochemistry and Molecular Biology, Graduate School and Faculty of Medicine, The University of Tokyo, Bunkyo, Japan
| | - Pascale Hilbert
- Department of Molecular and Cellular Biology, Institute of Pathology and Genetics, Charleroi, Belgium
| | - Nike Van Doninck
- Department of Endocrinology and Diabetology, General Hospital VITAZ, Sint-Niklaas, Belgium
| | - Marie-Caroline Taquet
- Department of Internal Medicine and Nutrition, Hopitaux Universitaires Strasbourg, Strasbourg, France
| | - Toon Rosseel
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Griet De Clercq
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Elke Debackere
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | | | - Ferroudja Ramdane Cherif
- Department of Neurology of the EHS of Cherchell, University Centre of Blida, Tipaza, Algeria
- NeuroSciences Research Laboratory, University of Algiers Benyoucef Benkhedda, Algiers, Algeria
| | | | - Jean-Baptiste Chanson
- Service de Neurologie et Centre de Référence Neuromusculaire Nord/Est/Ile de France, Hôpital de Hautepierre, Strasbourg, France
| | - Benoit Funalot
- Department of Medical Genetics, Hôpital Henri Mondor, Université Paris-Est-Créteil, Créteil, France
- INSERM UMR955, Team Relaix, Faculty of Medicine, Créteil, France
| | - François-Jérôme Authier
- INSERM UMR955, Team Relaix, Faculty of Medicine, Créteil, France
- Centre Expert de Pathologie Neuromusculaire/Histologie, Département de Pathologie, Hôpital Henri Mondor, Université Paris-Est-Créteil, Créteil, France
| | - Sabine Kaya
- Institut für Humangenetik, Universitätsklinikum Essen, Essen, Germany
| | - Wim Terryn
- Department of Nephrology, Jan Yperman Hospital, Ieper, Belgium
| | - Steven Callens
- Department of General Internal Medicine, Ghent University Hospital, Ghent, Belgium
| | - Bernard Depypere
- Department of Plastic and Reconstructive Surgery, Ghent University Hospital, Ghent, Belgium
| | - Jo Van Dorpe
- Department of Pathology, Ghent University Hospital, Ghent, Belgium
| | - Bruce Poppe
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
| | - Francis Impens
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium
- VIB-UGent Center for Medical Biotechnology, VIB, Ghent, Belgium
- VIB Proteomics Core, VIB, Ghent, Belgium
| | - Noboru Mizushima
- Department of Biochemistry and Molecular Biology, Graduate School and Faculty of Medicine, The University of Tokyo, Bunkyo, Japan
| | - Christel Depienne
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U1258, CNRS-UMR7104, Université de Strasbourg, Strasbourg, France
- Institut für Humangenetik, Universitätsklinikum Essen, Essen, Germany
| | - Isabelle Jéru
- Sorbonne Université, INSERM UMRS_938, Centre de Recherche Saint-Antoine (CRSA), Paris, France
- Department of Medical Genetics, DMU BioGeM, Sorbonne Université, AP-HP, Pitié-Salpêtrière Hospital, Paris, France
| | - Bart Dermaut
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium.
- Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, Ghent, Belgium.
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Hecham N, Nouioua S. Dermatomyosite à anticorps anti-NXP2 et COVID-19 : comorbidité ou complication ? Rev Neurol (Paris) 2023. [PMCID: PMC10042125 DOI: 10.1016/j.neurol.2023.01.591] [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: 03/29/2023]
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Belghazi F, Nouioua S. Fibrodysplasie ossifiante progressive : une condition ultrarare d’ossification. Rev Neurol (Paris) 2023. [DOI: 10.1016/j.neurol.2023.01.594] [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: 03/29/2023]
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Benchaabi O, Ramdane Cherif F, Nouioua S. Cas clinique no 4 : syndromes neurologiques paranéoplasiques : deux en un ! Rev Neurol (Paris) 2023. [DOI: 10.1016/j.neurol.2023.02.055] [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: 03/29/2023]
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Islam Kediha M, Nouioua S, Tazir M, Sternberg D, Lunardi J, Ali Pacha L. [The high phenotypic variability of RYR1 gene mutations]. Med Sci (Paris) 2022; 38 Hors série n° 1:46-48. [PMID: 36649637 DOI: 10.1051/medsci/2022178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The RYR1 gene encodes the ryanodine-receptor 1, a key protein in the excitation-contraction coupling that takes place in muscle fibers. This receptor is the main channel responsible for calcium release from the endoplasmic reticulum [1]. A number of clinical phenotypes are linked to various mutations in this large gene as shown in a compilation established by ORPHANET (see table). In this work we describe two distinct, somewhat misleading, phenotypes in relation to pathogenic variants in this gene.
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Affiliation(s)
| | | | - Meriem Tazir
- Service neurologie, CHU Mustapha Pacha Alger, Algérie
| | | | - Joël Lunardi
- Département biochimie et génétique moléculaire, CHU Grenoble, France
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Nouioua S, Belghazi F, Ramdanecherif F, Berradj F, Saidi K. Une encéphalite dysimmune post-Covid mimant un syndrome de CLIPPERS extrapontique. Rev Neurol (Paris) 2022. [PMCID: PMC9010592 DOI: 10.1016/j.neurol.2022.02.408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Introduction L’infection pandémique à Sars-Cov-2 est largement associée à des encéphalites immunomédiées survenant pendant ou après l’infection, elles peuvent comporter des aspects clinico-radiologiques divers. Observation Patient âgé de 72 ans aux antécédents d’HTA, de DNID et de glaucome a présenté il y a 8 mois une pneumopathie fébrile à Sars-Cov-2 de 25 %, d’évolution favorable. 3 mois après, les parents rapportent des troubles du comportement et de la thymie puis isolement, méconnaissance de l’entourage avec perte rapide de l’autonomie. L’examen neurologique retrouvait un syndrome mnésique, un syndrome dysexécutif et un parkinsonisme. L’IRM cérébrale retrouvait une plage d’hypersignal T2 flair de l’uncus temporal droit et des régions capsulo-lenticulaires bilatérales plus marquée à gauche avec une prise de contraste punctiforme centimétrique à gauche, l’étude du LCR montrait une synthèse intrathécale d’IgG, le bilan immunologique a révélé une positivité des AAN et le dosage des ANCA était négatif, le dosage des anticorps antineuronaux, les marqueurs tumoraux le scanner thoraco-abdomino-pelvien sont négatifs. 3 semaines après la 1ère cure d’immuno-globuline une aggravation des troubles cognitifs, des troubles de la posture et de la marche ont étés notés, l’IRM cérébrale de contrôle objectiva une extension des lésions avec de nombreuses prises de contraste punctiformes en régions capsulolenticulaires, insulaires et temporales mimant un « Supratentorial lymphocytic inflammation with parenchymal perivascular enhancement responsive to steroids » SLIPPERS, un variant du syndrome de Clippers. Discussion Les atteintes neuro-inflammatoires du SNC type encéphalites liées à la Covid-19 restent des manifestations rares avec une prévalence globale estimée à 9/1000 mais largement décrites dans la littérature, seules quelques rares cas de syndromes de Clippers ont été rapportés à ce jour. L’observation sus décrite d’une encéphalite subaiguë avec un aspect IRM Slippers like, sans toutefois la preuve de cortico-sensibilité, et sans autres causes établies est de mécanisme immunomédié probable survenant dans les suites retardées de la Covid-19. Conclusion Le Slippers, un variant du syndrome de Clippers, est une entité rare et, à notre connaissance il s’agit du premier cas rapporté dans les suites d’un Covid-19. D’autres descriptions futures sont nécessaires afin d’établir un lien de causalité.
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Nouioua S, Malfatti E, Gianina R, Hellal S, Meriem T, Urtizberea JA. [A case of congenital limb girdle myasthenia solved through a tripartite collaboration]. Med Sci (Paris) 2021; 37 Hors série n° 1:50-52. [PMID: 34878399 DOI: 10.1051/medsci/2021196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Sonia Nouioua
- Service de Neurologie, EHS El Maham Cherchell, Tipaza, Algérie
| | - Edoardo Malfatti
- Centre de référence neuromusculaire, APHP, Hôpital Henri Mondor, Université Paris Est, U955 INSERM, IMRB, France
| | - Ravenscroft Gianina
- Harry Perkins Institute of Medical Research, University of Western Australia, Nedlands, Australia
| | - Sihem Hellal
- Laboratoire Central, CHU Mustapha, Alger, Algérie
| | - Tazir Meriem
- Service de Neurologie, CHU Mustapha, Université Youcef Benkhedda, Alger Algérie
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Malfatti E, Catchpool T, Nouioua S, Sihem H, Fournier E, Carlier RY, Cardone N, Davis MR, Laing NG, Sternberg D, Ravenscroft G. A TOR1AIP1 variant segregating with an early onset limb girdle myasthenia-Support for the role of LAP1 in NMJ function and disease. Neuropathol Appl Neurobiol 2021; 48:e12743. [PMID: 34164833 DOI: 10.1111/nan.12743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 01/29/2021] [Accepted: 05/22/2021] [Indexed: 11/28/2022]
Abstract
Rare pathogenic variants in TOR1AIP1 (OMIM 614512), coding the inner nuclear membrane protein lamin-associated protein 1 (LAP1), have been associated with a spectrum of disorders including limb girdle muscular dystrophy with cardiac involvement and a severe multisystem phenotype. Recently, Cossins et al reported two siblings with limb girdle muscular dystrophy and impaired transmission of the neuromuscular synapse, demonstrating that defective LAP1 may lead to a congenital myasthenic syndrome. Herein, we describe the association of TOR1AIP1 deficiency with congenital myasthenic syndrome in three siblings.
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Affiliation(s)
- Edoardo Malfatti
- APHP, North-East-Ile-de-France Neuromuscular Pathology Reference Center, Henri-Mondor University Hospital, Paris, France.,UVSQ-INSERM Neuromuscular Handicap: Applied Physiology, Biotherapy and Pharmacology, UFR Simone Veil-Santé, Versailles Saint-Quentin-en-Yvelines University, Paris, France
| | - Tara Catchpool
- Harry Perkins Institute of Medical Research, Centre of Medical Research, University of Western Australia, Nedlands, Western Australia, Australia
| | - Sonia Nouioua
- Department of Neurology of the EHS of Cherchell, University Centre of Tipaza, Tipaza, Algeria.,NeuroSciences Research Laboratory, University of Algiers Benyoucef Benkhedda, Alger, Algeria
| | - Hellal Sihem
- NeuroSciences Research Laboratory, University of Algiers Benyoucef Benkhedda, Alger, Algeria.,Central Laboratory of Biochemistry, CHU Mustapha, Algiers, Algeria
| | - Emmanuel Fournier
- APHP, Department of Neurophysiology, GH Pitié-Salpêtrière, Sorbonne University, Paris, France
| | - Robert Y Carlier
- APHP, DMU Smart Imaging, Medical imaging Department, Raymond Poincaré Teaching Hospital, North-East-Ile-de-France Neuromuscular Pathology Reference Center, GH University Paris-Saclay, Paris, France
| | - Nastasia Cardone
- APHP, North-East-Ile-de-France Neuromuscular Pathology Reference Center, Henri-Mondor University Hospital, Paris, France.,Department of Medicine, Surgery and Neurosciences, University of Siena, Siena, Italy.,Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence, Italy
| | - Mark R Davis
- PathWest Diagnostic Genomics, Nedlands, Western Australia, Australia.,School of Biomedical Sciences, University of Western Australia, Nedlands, Western Australia, Australia
| | - Nigel G Laing
- Harry Perkins Institute of Medical Research, Centre of Medical Research, University of Western Australia, Nedlands, Western Australia, Australia
| | - Damien Sternberg
- APHP, Metabolic Biochemistry Department, Genetics Center, Pitié-Salpêtrière Hospital Group, Center of Research in Myology, APHP Sorbonne University, Paris, France
| | - Gianina Ravenscroft
- Harry Perkins Institute of Medical Research, Centre of Medical Research, University of Western Australia, Nedlands, Western Australia, Australia.,School of Biomedical Sciences, University of Western Australia, Nedlands, Western Australia, Australia
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Nouioua S, Kediha MI, Nassima H, Attal N, Moualek D, Tazir M, Pacha LA. Aquaporinopathie et mogopathie révélant un cancer mammaire et gastrique : comorbidités ou syndromes neurologiques paranéoplasiques ? Rev Neurol (Paris) 2021. [DOI: 10.1016/j.neurol.2021.02.362] [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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Nouioua S, Chentir N, Houlden H, Laouar L, Moualek D, Tazir M, Pacha LA. Cas clinique 2 : un contorsionniste au cœur fragile ! Rev Neurol (Paris) 2021. [DOI: 10.1016/j.neurol.2021.02.029] [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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Nouioua S, Hamadouche T, Cherallah A, Benhassine T, Tazir M, Pacha LA. Intérêt de la MLPA dans l’exploration moléculaire des dystrophinopathies : étude d’une cohorte Algérienne. Rev Neurol (Paris) 2020. [DOI: 10.1016/j.neurol.2020.01.124] [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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Mostefaoui F, Belarbi S, Nouioua S, Alipacha L. Étude clinique d’une encéphalopathie de Hashimoto. Rev Neurol (Paris) 2020. [DOI: 10.1016/j.neurol.2020.01.138] [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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Nouioua S, Pacha LA, Beghdadi K, Ait Aissa L, Bouderba R, Nassima H, Tazir M. Le syndrome de CLIPPERS : une nouvelle entité dans le spectre des rhombencéphalites inflammatoires. Rev Neurol (Paris) 2018. [DOI: 10.1016/j.neurol.2018.01.160] [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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Merazga M, Alipacha L, Nouioua S, Beghdadi K, Amel S, Tazir M. Neuromyélite optique de Devic séropositive à neuro-imagerie normale. Rev Neurol (Paris) 2018. [DOI: 10.1016/j.neurol.2018.01.065] [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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Aissa LA, Pacha LA, Nouioua S, Tazir M. Sclérose latérale amyotrophique juvénile avec anticorps antigangliosides élevés : marqueur d’auto-immunité ou épiphénomène ? Rev Neurol (Paris) 2018. [DOI: 10.1016/j.neurol.2018.01.119] [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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Moualek D, Alipacha L, Nouioua S, Beghdadi K, Benhassine T, Koenig M, Tazir M. Syndrome CACH et leucoencephalopathie avec mégalencéphalie et « kystes » sous-corticaux. Étude de 7 cas. Rev Neurol (Paris) 2018. [DOI: 10.1016/j.neurol.2018.01.141] [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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Duchesne M, Mathis S, Richard L, Magdelaine C, Corcia P, Nouioua S, Tazir M, Magy L, Vallat JM. Nerve Biopsy Is Still Useful in Some Inherited Neuropathies. J Neuropathol Exp Neurol 2017; 77:88-99. [DOI: 10.1093/jnen/nlx111] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Nouioua S, Cherallah A, Benahmed M, Mathieu C, Krahn M, Hamadouche T, Tazir M. Description d’une famille algérienne associant une dysferlinopathie et une merosinopathie primaires. Rev Neurol (Paris) 2017. [DOI: 10.1016/j.neurol.2017.01.082] [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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Stockler-Ipsiroglu S, Apatean D, Battini R, DeBrosse S, Dessoffy K, Edvardson S, Eichler F, Johnston K, Koeller DM, Nouioua S, Tazir M, Verma A, Dowling MD, Wierenga KJ, Wierenga AM, Zhang V, Wong LJC. Arginine:glycine amidinotransferase (AGAT) deficiency: Clinical features and long term outcomes in 16 patients diagnosed worldwide. Mol Genet Metab 2015; 116:252-9. [PMID: 26490222 DOI: 10.1016/j.ymgme.2015.10.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 10/12/2015] [Accepted: 10/12/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND Arginine:glycine aminotransferase (AGAT) (GATM) deficiency is an autosomal recessive inborn error of creative synthesis. OBJECTIVE We performed an international survey among physicians known to treat patients with AGAT deficiency, to assess clinical characteristics and long-term outcomes of this ultra-rare condition. RESULTS 16 patients from 8 families of 8 different ethnic backgrounds were included. 1 patient was asymptomatic when diagnosed at age 3 weeks. 15 patients diagnosed between 16 months and 25 years of life had intellectual disability/developmental delay (IDD). 8 patients also had myopathy/proximal muscle weakness. Common biochemical denominators were low/undetectable guanidinoacetate (GAA) concentrations in urine and plasma, and low/undetectable cerebral creatine levels. 3 families had protein truncation/null mutations. The rest had missense and splice mutations. Treatment with creatine monohydrate (100-800 mg/kg/day) resulted in almost complete restoration of brain creatine levels and significant improvement of myopathy. The 2 patients treated since age 4 and 16 months had normal cognitive and behavioral development at age 10 and 11 years. Late treated patients had limited improvement of cognitive functions. CONCLUSION AGAT deficiency is a treatable intellectual disability. Early diagnosis may prevent IDD and myopathy. Patients with unexplained IDD with and without myopathy should be assessed for AGAT deficiency by determination of urine/plasma GAA and cerebral creatine levels (via brain MRS), and by GATM gene sequencing.
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MESH Headings
- Adolescent
- Amidinotransferases/chemistry
- Amidinotransferases/deficiency
- Amidinotransferases/genetics
- Amino Acid Metabolism, Inborn Errors/diagnosis
- Amino Acid Metabolism, Inborn Errors/drug therapy
- Amino Acid Metabolism, Inborn Errors/genetics
- Amino Acid Metabolism, Inborn Errors/physiopathology
- Child
- Child, Preschool
- Creatine/deficiency
- Creatine/therapeutic use
- Developmental Disabilities/diagnosis
- Developmental Disabilities/drug therapy
- Developmental Disabilities/genetics
- Developmental Disabilities/physiopathology
- Female
- Gene Expression
- Genes, Recessive
- Glycine/analogs & derivatives
- Glycine/blood
- Glycine/deficiency
- Glycine/urine
- Humans
- Intellectual Disability/diagnosis
- Intellectual Disability/drug therapy
- Intellectual Disability/genetics
- Intellectual Disability/physiopathology
- Magnetic Resonance Spectroscopy
- Male
- Models, Molecular
- Muscular Diseases/diagnosis
- Muscular Diseases/drug therapy
- Muscular Diseases/genetics
- Muscular Diseases/physiopathology
- Mutation
- Protein Structure, Secondary
- Protein Structure, Tertiary
- Sequence Analysis, DNA
- Speech Disorders/diagnosis
- Speech Disorders/drug therapy
- Speech Disorders/genetics
- Speech Disorders/physiopathology
- Treatment Outcome
- Young Adult
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Affiliation(s)
- Sylvia Stockler-Ipsiroglu
- Division of Biochemical Diseases, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada; Child & Family Research Institute, BC Children's Hospital, Vancouver, BC, Canada.
| | - Delia Apatean
- Division of Biochemical Diseases, Department of Pediatrics, University of British Columbia, Vancouver, BC, Canada
| | - Roberta Battini
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa, Italy
| | - Suzanne DeBrosse
- Center for Medical Genetics, University Hospitals Case Medical Center, Cleveland, OH, USA
| | - Kimberley Dessoffy
- Center for Medical Genetics, University Hospitals Case Medical Center, Cleveland, OH, USA
| | - Simon Edvardson
- Pediatric Neurology Unit, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Florian Eichler
- Division of Neurology, Massachusetts General Hospital, Boston, MA, USA
| | | | - David M Koeller
- Department of Molecular & Medical Genetics, Oregon Health & Science University, Portland, OR, USA
| | - Sonia Nouioua
- Service de Neurologie and Laboratoire de Neurosciences, CHU Mustapha Bacha, Université d'Alger, Algeria
| | - Meriem Tazir
- Service de Neurologie and Laboratoire de Neurosciences, CHU Mustapha Bacha, Université d'Alger, Algeria
| | - Ashok Verma
- Department of Neurology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Monica D Dowling
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Klaas J Wierenga
- Department of Pediatrics, Oklahoma University Health Sciences Center, OK, USA
| | - Andrea M Wierenga
- Department of Pediatrics, Oklahoma University Health Sciences Center, OK, USA
| | - Victor Zhang
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Lee-Jun C Wong
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
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Bellatache M, Nouioua S, Magdelaine C, Assami S, Vallat JM, Tazir M. Variabilité phénotypique de deux familles AR CMT avec une mutation du gène GDAP1. Rev Neurol (Paris) 2015. [DOI: 10.1016/j.neurol.2015.01.323] [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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22
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Nouioua S, Cherallah A, Benahmed M, Hamadouche T, Benhassine T, Terki N, Tazir M. Les dystrophinopathies et les dystrophies musculaires des ceintures autosomiques récessives (LGMD2) : étude d’une cohorte de 122 familles algériennes. Rev Neurol (Paris) 2015. [DOI: 10.1016/j.neurol.2015.01.365] [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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Hecham N, Nouioua S, Sifi Y, Toubal N, Aissa LA, Hattab S, Batsi D, Hamimed A, Berkane F, Oudrer N, Aidi A, Abrouk S, Daoudi S, Hamri A, Assami S, Tazir M. Multiple sclerosis: Progression rate and severity in a multicenter cohort from Algeria. Mult Scler 2014; 20:1923-4. [DOI: 10.1177/1352458514543343] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Nassima Hecham
- Laboratoire de Neurosciences, Algiers University and Mustapha Bacha University Hospital, Algiers, Algeria
| | - Sonia Nouioua
- Laboratoire de Neurosciences, Algiers University and Mustapha Bacha University Hospital, Algiers, Algeria
| | - Yamina Sifi
- Ben Baddis University Hospital, Constantine, Algeria
| | - Nadia Toubal
- Ibn Rochd University Hospital of Annaba, Algeria
| | - Leila Ait Aissa
- Laboratoire de Neurosciences, Algiers University and Mustapha Bacha University Hospital, Algiers, Algeria
| | - Samira Hattab
- University Hospital of Tizi-Ouzou, Tizi-Ouzou, Algeria
| | - Dounia Batsi
- University Hospital of Sidi-Belab, Sidi-Belab, Algeria
| | - Amine Hamimed
- University Hospital of Sidi-Belab, Sidi-Belab, Algeria
| | | | | | | | | | - Smail Daoudi
- University Hospital of Tizi-Ouzou, Tizi-Ouzou, Algeria
| | | | - Salima Assami
- Laboratoire de Neurosciences, Algiers University and Mustapha Bacha University Hospital, Algiers, Algeria
| | - Meriem Tazir
- Laboratoire de Neurosciences, Algiers University and Mustapha Bacha University Hospital, Algiers, Algeria
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Cherrallah A, Benhassine T, Nouioua S, Makri S, Chaouch M, Tazir M, Hamadouche T. Intragenic deletion patterns of dystrophin gene in Duchenne and Becker muscular dystrophy patients from Algeria. Genes Genomics 2014. [DOI: 10.1007/s13258-013-0134-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Nouioua S, Cheillan D, Zaouidi S, Salomons G, Amedjout N, Kessaci F, Boulahdour N, Hamadouche T, Tazir M. Creatine deficiency syndrome. A treatable myopathy due to arginine–glycine amidinotransferase (AGAT) deficiency. Neuromuscul Disord 2013; 23:670-4. [DOI: 10.1016/j.nmd.2013.04.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Accepted: 04/29/2013] [Indexed: 10/26/2022]
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26
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Tazir M, Bellatache M, Nouioua S, Vallat JM. Autosomal recessive Charcot-Marie-Tooth disease: from genes to phenotypes. J Peripher Nerv Syst 2013; 18:113-29. [DOI: 10.1111/jns5.12026] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 03/19/2013] [Accepted: 03/19/2013] [Indexed: 11/27/2022]
Affiliation(s)
- Meriem Tazir
- Service de Neurologie; University Hospital Mustapha Bacha; Alger Algeria
- Laboratoire de NeuroSciences; Université d'Alger 1; Alger Algeria
| | - Mounia Bellatache
- Service de Neurologie; University Hospital Mustapha Bacha; Alger Algeria
- Laboratoire de NeuroSciences; Université d'Alger 1; Alger Algeria
| | - Sonia Nouioua
- Service de Neurologie; University Hospital Mustapha Bacha; Alger Algeria
- Laboratoire de NeuroSciences; Université d'Alger 1; Alger Algeria
| | - Jean-Michel Vallat
- Centre de Référence ⟨Neuropathies Périphériques Rares⟩, Service et Laboratoire de Neurologie; University Hospital; Limoges France
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27
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Moualek D, Pacha LA, Abrouk S, Kediha MI, Nouioua S, Aissa LA, Bellatache M, Belarbi S, Slimani S, Khennouf H, Fellahi L, El Amine Hamimed M, Benali N, Chekkour MC, Maamoun R, Dameche R, Assami S, Tazir M. Multicenter transversal two-phase study to determine a national prevalence of epilepsy in Algeria. Neuroepidemiology 2012; 39:131-4. [PMID: 22889740 DOI: 10.1159/000339637] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 05/15/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS The prevalence of epilepsy in Algeria is unknown. The aims of this multicenter transversal study were to determine the national prevalence and clinical characteristics of epilepsy in the Algerian population. METHODS This two-phase study was conducted in 5 circumscriptions and included 8,046 subjects aged over 2 months who attended the randomly selected public and private primary care clinics. In the phase 1 study, a questionnaire was submitted to the sample of patients. In the phase 2 study, all potentially epileptic people were examined by neurologists and a second questionnaire was submitted, eventually assessed by appropriate investigations. RESULTS Sixty-seven patients were identified as having active epilepsy, giving a crude prevalence ratio of 8.32 per 1,000 (95% CI, 6.34-10.3) and an age-adjusted prevalence ratio of 8.9 per 1,000. The highest age-specific ratio was found in patients aged 10-19 years (16.92 per 1,000). Generalized seizures (68.7%) were more common than partial seizures (29.8%). Perinatal injuries were the major leading putative causes (11.9%). CONCLUSION The prevalence of epilepsy of 8.32 determined in this study is relatively high. These results provide new epidemiological data and suggest that epilepsy remains an important public health issue to consider in Algeria.
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Affiliation(s)
- Dalila Moualek
- Service de Neurologie et Laboratoire de Recherche en Neurosciences, Université d'Alger, CHU Mustapha Bacha, Algiers, Algeria
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28
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Nouioua S, Hamadouche T, Funalot B, Bernard R, Bellatache N, Bouderba R, Grid D, Assami S, Benhassine T, Levy N, Vallat JM, Tazir M. Novel mutations in the PRX and the MTMR2 genes are responsible for unusual Charcot-Marie-Tooth disease phenotypes. Neuromuscul Disord 2011; 21:543-50. [PMID: 21741241 DOI: 10.1016/j.nmd.2011.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 04/19/2011] [Accepted: 04/27/2011] [Indexed: 11/30/2022]
Abstract
Autosomal recessive Charcot-Marie-Tooth diseases, relatively common in Algeria due to high prevalence of consanguineous marriages, are clinically and genetically heterogeneous. We report on two consanguineous families with demyelinating autosomal recessive Charcot-Marie-Tooth disease (CMT4) associated with novel homozygous mutations in the MTMR2 gene, c.331dupA (p.Arg111LysfsX24) and PRX gene, c.1090C>T (p.Arg364X) respectively, and peculiar clinical phenotypes. The three patients with MTMR2 mutations (CMT4B1 family) had a typical phenotype of severe early onset motor and sensory neuropathy with typical focally folded myelin on nerve biopsy. Associated clinical features included vocal cord paresis, prominent chest deformities and claw hands. Contrasting with the classical presentation of CMT4F (early-onset Dejerine-Sottas phenotype), the four patients with PRX mutations (CMT4F family) had essentially a late age of onset and a protracted and relatively benign evolution, although they presented marked spine deformities. These observations broaden the spectrum of clinical phenotypes associated with these two CMT4 forms.
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Affiliation(s)
- Sonia Nouioua
- Service de Neurologie, CHU Mustapha Bacha, Algiers, Algeria
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29
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Assami S, Azzedine H, Nouioua S, Mundwiller E, Mahoui S, Makri S, Djemai M, Grid D, Brice A, Hamadouche T, Stevanin G, Tazir M. Pantothenate kinase-associated neurodegeneration: Clinical description of 10 patients and identification of new mutations. Mov Disord 2011; 26:1777-9. [DOI: 10.1002/mds.23648] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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30
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Benhassine T, Hamadouche T, Icheboudene K, Drali R, Nouioua S, Makri S, Chaouch M, Tazir M. G.P.10.01 DMD and SGCG molecular analysis in 200 Algerian patients affected with progressive muscular dystrophies. Neuromuscul Disord 2009. [DOI: 10.1016/j.nmd.2009.06.239] [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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31
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Tazir M, Nouioua S, Hamadouche T, Bernard R, Grid D, Levy N, Vallat J. G.P.4.04 A new MTMR2 mutation is responsible for a congenital form of Charcot-Marie-Tooth disease (CMT4B1) and vocal cord paresis. Neuromuscul Disord 2009. [DOI: 10.1016/j.nmd.2009.06.073] [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: 11/24/2022]
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32
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Tazir M, Ali-Pacha L, M'Zahem A, Delaunoy J, Fritsch M, Nouioua S, Benhassine T, Assami S, Grid D, Vallat J, Hamri A, Koenig M. Ataxia with oculomotor apraxia type 2: A clinical and genetic study of 19 patients. J Neurol Sci 2009; 278:77-81. [DOI: 10.1016/j.jns.2008.12.004] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Revised: 11/21/2008] [Accepted: 12/02/2008] [Indexed: 11/30/2022]
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Richard P, Gaudon K, Haddad H, Ammar AB, Genin E, Bauche S, Paturneau-Jouas M, Muller JS, Lochmuller H, Grid D, Hamri A, Nouioua S, Tazir M, Mayer M, Desnuelle C, Barois A, Chabrol B, Pouget J, Koenig J, Gouider-Khouja N, Hentati F, Eymard B, Hantai D. The CHRNE 1293insG founder mutation is a frequent cause of congenital myasthenia in North Africa. Neurology 2008; 71:1967-72. [DOI: 10.1212/01.wnl.0000336921.51639.0b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Hamadouche T, Poitelon Y, Genin E, Chaouch M, Tazir M, Kassouri N, Nouioua S, Chaouch A, Boccaccio I, Benhassine T, De Sandre-Giovannoli A, Grid D, Lévy N, Delague V. Founder effect and estimation of the age of the c.892C>T (p.Arg298Cys) mutation in LMNA associated to Charcot-Marie-Tooth subtype CMT2B1 in families from North Western Africa. Ann Hum Genet 2008; 72:590-7. [PMID: 18549403 DOI: 10.1111/j.1469-1809.2008.00456.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
CMT2B1, an axonal subtype (MIM 605588) of the Charcot-Marie-Tooth disease, is an autosomal recessive motor and sensory neuropathy characterized by progressive muscular and sensory loss in the distal extremities with chronic distal weakness. The genetic defect associated with the disease is, to date, a unique homozygous missense mutation, p.Arg298Cys (c.892C>T), in the LMNA gene. So far, this mutation has only been found in affected individuals originating from a restricted region of North Western Africa (northwest of Algeria and east of Morocco), strongly suggesting a founder effect. In order to address this hypothesis, genotyping of both STRs and intragenic SNPs was performed at the LMNA locus, at chromosome 1q21.2-q21.3, in 42 individuals affected with CMT2B1 from 25 Algerian families. Our results indicate that the affected individuals share a common ancestral haplotype in a region of about 1.0 Mb (1 cM) and that the most recent common ancestor would have lived about 800-900 years ago (95% confidence interval: 550 to 1300 years).
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Affiliation(s)
- T Hamadouche
- INSERM UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Université de La Méditerranée, Faculté de Médecine Timone, Marseille, France
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Tazir M, Hühne K, Nouioua S, Grid D, Hamadouche T, Rautenstrauss B, Vallat M. G.P.18.01 Giant axonal neuropathy: Phenotype–genotype correlations in two cases with two novel mutations in the Gigaxonin gene. Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.428] [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: 10/22/2022]
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36
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Azzedine H, Ravisé N, Verny C, Gabrëels-Festen A, Lammens M, Grid D, Vallat JM, Durosier G, Senderek J, Nouioua S, Hamadouche T, Bouhouche A, Guilbot A, Stendel C, Ruberg M, Brice A, Birouk N, Dubourg O, Tazir M, LeGuern E. Spine deformities in Charcot-Marie-Tooth 4C caused by SH3TC2 gene mutations. Neurology 2006; 67:602-6. [PMID: 16924012 DOI: 10.1212/01.wnl.0000230225.19797.93] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Charcot-Marie-Tooth (CMT) disease is a heterogeneous group of inherited peripheral motor and sensory neuropathies with several modes of inheritance: autosomal dominant, X-linked, and autosomal recessive (AR) CMT. A locus responsible for the demyelinating form of ARCMT was assigned to the 5q23-q33 region (CMT4C) by homozygosity mapping. Recently, 11 mutations were identified in the SH3TC2 (KIAA1985) gene in 12 families with demyelinating ARCMT from Turkish, Iranian, Greek, Italian, or German origin. OBJECTIVE To identify mutations in the SH3TC2 gene. METHODS The authors searched for SH3TC2 gene mutations in 10 consanguineous CMT families putatively linked to the CMT4C locus on the basis of haplotype segregation and linkage analysis. RESULTS Ten families had mutations, eight of which were new and one, R954X, recurrent. Six of the 10 mutations were in exon 11. Onset occurred between ages 2 and 10. Scoliosis or kyphoscoliosis and foot deformities were found in almost all patients and were often inaugural. The median motor nerve conduction velocity values (</=34 m/s) were not correlated with disease duration. The functional disability score was </=3, indicating that the patients could walk without help. Unexpectedly, typical giant axons were observed on biopsies from a large Algerian family. CONCLUSIONS Charcot-Marie-Tooth type 4C (CMT4C) is less severe than other autosomal recessive (AR) CMT. Intrafamilial variability is important, making phenotype-genotype correlations difficult, but spine deformities are clearly a hallmark of CMT4C. In the presence of scoliosis, a neurologic examination is recommended. Giant axons on biopsies are also suggestive of CMT4C. For genetic analysis, the R954X mutation should be looked for before systematic sequencing of exon 11.
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Affiliation(s)
- H Azzedine
- INSERM U679 (ex U289), Neurology and Experimental Therapeutics, La Pitié-Salpêtrière Hospital, Paris, France.
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Tazir M, Azzedine H, Assami S, Sindou P, Nouioua S, Zemmouri R, Hamadouche T, Chaouch M, Feingold J, Vallat JM, Leguern E, Grid D. Phenotypic variability in autosomal recessive axonal Charcot-Marie-Tooth disease due to the R298C mutation in lamin A/C. Brain 2004; 127:154-63. [PMID: 14607793 DOI: 10.1093/brain/awh021] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Autosomal recessive forms of axonal Charcot-Marie-Tooth (ARCMT2) disease are frequent in some areas, such as North Africa and the Middle East, since consanguineous marriages are still common there. Recently, a unique homozygous mutation in LMNA, which encodes lamin A/C, a component of the nuclear envelope, was identified in members of three Algerian families with ARCMT2 linked to chromosome 1q21.2-q21.3. In the present study we describe a group of 21 ARCMT2 patients from seven unrelated Algerian families with the same R298C mutation in the lamin A/C gene and marked variability of the clinical phenotype. There is a wide range of age of onset, from 6 to 27 years, with a mean of 14.4 +/- 4.6 years. The course of the disease varies considerably from one patient to another. Twelve patients with a disease duration of 10-15 years had a severe CMT phenotype with distal wasting and weakness of all four limbs and areflexia associated with involvement of the proximal lower limb muscles. In contrast, nine patients had the classical CMT phenotype with mild functional disability without proximal lower limb involvement after a disease duration of 5-18 years. Electrophysiological studies showed a median motor nerve conduction velocity (MNCV) in the normal range in almost all the patients. MNCV and compound muscle action potential (CMAP) values were inversely correlated with the disease duration and the MNCV was strictly related to the CMAP, strongly supporting a pure axonal process without a demyelinating component. Six patients had a nerve biopsy, which revealed severe rarefaction of myelinated fibres in all cases and an increased density of unmyelinated fibres in the majority of cases. In conclusion, the ARCMT2 associated with the R298C mutation differs from other types of ARCMT2. The variability among patients in the age of onset and the course of the disease strongly suggests the action of modifying genes, which remain to be identified.
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Affiliation(s)
- M Tazir
- Service de Neurologie, Central Hospitalier Universitaire Mustapha 16.000 Algiers, Algeria.
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Tazir M, Vallat JM, Bomont P, Zemmouri R, Sindou P, Assami S, Nouioua S, Hammadouche T, Grid D, Koenig M. Genetic heterogeneity in giant axonal neuropathy: an Algerian family not linked to chromosome 16q24.1. Neuromuscul Disord 2002; 12:849-52. [PMID: 12398836 DOI: 10.1016/s0960-8966(02)00029-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Giant axonal neuropathy is a rare severe autosomal recessive childhood disorder affecting both the peripheral nerves and the central nervous system. Peripheral nerves characteristically show giant axonal swellings filled with neurofilaments. The giant axonal neuropathy gene was localised by homozygosity mapping to chromosome 16q24.1 and identified as encoding a novel, ubiquitously expressed cytoskeletal protein named gigaxonin.We describe a consanguineous Algerian family with three affected sibs aged 16, 14 and 12 years who present a mild demyelinating sensory motor neuropathy, hypoacousia and kyphoscoliosis which was moderate in the two elder patients, severe in the third one, with no sign of central nervous system involvement and normal cerebral magnetic resonance imaging. This clinical picture is different from the classical severe form, with kinky hairs and early onset of central nervous system involvement and from the less severe form, with protracted course and late involvement of central nervous system. Nerve biopsy showed a moderate loss of myelinated fibers and several giant axons with thin or absent myelin, filled with neurofilaments. This neuropathological aspect is similar to the previously described families linked to the gigaxonin gene. Genetic study in this family showed absence of linkage to chromosome 16q24.1, indicating for the first time, a genetic heterogeneity in giant axonal neuropathy. We propose to call this form of giant axonal neuropathy giant axonal neuropathy 2, and to use the name of giant axonal neuropathy 1 for the form linked to 16q24.1.
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Affiliation(s)
- M Tazir
- Service de Neurologie, C.H.U Mustapha Bacha, Place du 1er Mai, 16000, Alger, Algeria.
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