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Hamza W, Pacha L, Hamadouche T, Tazir M, Koenig M, Benhassine T. Diagnostic de l’ataxie spastique autosomique récessive de Charlevoix-Saguenay (ARSACS) chez des patients algériens. Rev Neurol (Paris) 2014. [DOI: 10.1016/j.neurol.2014.01.393] [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: 10/25/2022]
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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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Hamadouche T, Belarbi S, Hecham N, Lesage S, Brice A, Tazir M, Benhassine T. Diagnostic génétique de la forme PARK8 de la maladie de Parkinson en Algérie par recherche de la mutation c 6055G>A (p gly2019ser) dans le gène LRRK2. Rev Neurol (Paris) 2013. [DOI: 10.1016/j.neurol.2013.01.291] [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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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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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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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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Delague V, Jacquier A, Hamadouche T, Poitelon Y, Baudot C, Boccaccio I, Chouery E, Chaouch M, Kassouri N, Jabbour R, Grid D, Mégarbané A, Haase G, Levy N. G.O.3 Mutations in FGD4 encoding the Rho GDP/GTP exchange factor FRABIN cause autosomal recessive Charcot-Marie-Tooth type 4H. Neuromuscul Disord 2007. [DOI: 10.1016/j.nmd.2007.06.024] [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: 11/28/2022]
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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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De Sandre-Giovannoli A, Delague V, Hamadouche T, Chaouch M, Krahn M, Boccaccio I, Maisonobe T, Chouery E, Jabbour R, Atweh S, Grid D, Mégarbané A, Lévy N. Homozygosity mapping of autosomal recessive demyelinating Charcot-Marie-Tooth neuropathy (CMT4H) to a novel locus on chromosome 12p11.21-q13.11. J Med Genet 2006; 42:260-5. [PMID: 15744041 PMCID: PMC1736004 DOI: 10.1136/jmg.2004.024364] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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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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Hamadouche T, Tazir-Melboucy M, Benhassine T. [Genetic study of the autosomal recessive form of Charcot-Marie-Tooth in an Algerian family]. Arch Inst Pasteur Alger 2001; 62:268-84. [PMID: 11256316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Charcot-Marie-Tooth disease (CMT) is a hereditary neuropathy characterized by muscular atrophy and progressive sensitive alterations that affect limbs. The CMT is one of the most heterogenous diseases, clinically as well as genetically. At least twelve loci are responsible for the CMT phenotype, four of them for the autosomal recessive form. The aim of our work was to determinate the implication/exclusion of these four loci in an Algerian family by linkage analysis using microsatellites markers. We have tested the four loci on 8q13-21.1 (CMT4A), 11q23 (CMT4B), 5q23-33 (CMT4C) 8q24 (CMTAR). The haplotype reconstruction allowed us to exclude all the loci in this family, suggesting that the locus (gene) responsible for this form of CMT is localized elsewhere in the genome, thus providing an other observation of the great heterogeneity of the CMT, particularly autosomal recessive.
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Affiliation(s)
- T Hamadouche
- Laboratoire de Biologie Moléculaire, Institut Pasteur d'Algérie
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Zemmouri R, Azzedine H, Assami S, Kitouni N, Vallat JM, Maisonobe T, Hamadouche T, Kessaci M, Mansouri B, Le Guern E, Grid D, Tazir M. Charcot-Marie-Tooth 2-like presentation of an Algerian family with giant axonal neuropathy. Neuromuscul Disord 2000; 10:592-8. [PMID: 11053687 DOI: 10.1016/s0960-8966(00)00141-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [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: 10/17/2022]
Abstract
Giant axonal neuropathy is a rare autosomal recessive childhood disorder characterized by a peripheral neuropathy and features of central nervous system involvement. We describe four patients belonging to a consanguineous Algerian family with late onset (6-10 years) slowly progressive autosomal recessive giant axonal neuropathy. The propositus presented with a Charcot-Marie-Tooth 2-like phenotype with foot deformity, distal amyotrophy of lower limbs, areflexia and distal lower limb hypoesthesia. Central nervous system involvement occurred 10 years later with mild cerebellar dysarthria and nystagmus in the propositus and 16 years after onset, a spastic paraplegia in the oldest patient. The two youngest patients (13 and 8 years old) do not present any signs of central nervous involvement. Magnetic resonance imaging showed cerebellar atrophy in the two older. Nerve biopsy showed moderate axonal loss with several giant axons filled with neurofilaments. Genetic study established a linkage to chromosome 16q locus. This clinical presentation differs from the classical form of giant axonal neuropathy.
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Affiliation(s)
- R Zemmouri
- Service de Neurologie, CHU Mustapha, Alger Centre, Alger 16000, Algeria
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Salih MA, Maisonobe T, Kabiraj M, al Rayess M, al-Turaiki MH, Akbar M, Tahan A, Urtizberea JA, Grid D, Hamadouche T, Guilbot A, Brice A, Leguern E. Autosomal recessive hereditary neuropathy with focally folded myelin sheaths and linked to chromosome 11q23: a distinct and homogeneous entity. Neuromuscul Disord 2000; 10:10-5. [PMID: 10677858 DOI: 10.1016/s0960-8966(99)00057-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 12/21/2022]
Abstract
We describe a six generation Saudi kindred, with a recessive hereditary motor and sensory neuropathy (HMSN). Four individuals were affected including two children (a boy and a girl) and a 23-year-old man. The fourth (a female) died at the age of 14 years. Onset of the disease was early (< 2 years) and the clinical and neurophysiological features were, generally, quite similar to those of an Italian family linked to chromosome 11q23. The peculiar pathologic pattern was irregular and redundant loops associated with folding of the myelin sheaths. The genetic study confirmed linkage to chromosome 11q23 and refined the location of the gene between D11S1311 and D11S917, a 3.3 cM region. These findings support the existence of a homogeneous and distinct entity within the form of HMSN associated with focally folded myelin sheaths.
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Affiliation(s)
- M A Salih
- Department of Pediatrics (39), College of Medicine, King Saud University, Riyadh, Saudi Arabia
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