Late onset axonal Charcot-Marie-Tooth phenotype caused by a novel myelin protein zero mutation.
نویسندگان
چکیده
A late onset axonal Charcot-Marie-Tooth phenotype is described, resulting from a novel mutation in the myelin protein zero (MPZ) gene. Comparative computer modelling of the three dimensional structure of the MPZ protein predicts that this mutation does not cause a significant structural change. The primary axonal disease process in these patients points to a function of MPZ in maintenance of the myelinated axons, apart from securing stability of the myelin layer.
منابع مشابه
A Novel Asp121Asn Mutation of Myelin Protein Zero Is Associated with Late-Onset Axonal Charcot-Marie-Tooth Disease, Hearing Loss and Pupil Abnormalities
Myelin protein zero (MPZ) is a major component of compact myelin in peripheral nerves. Mutations in MPZ have been associated with different Charcot-Marie-Tooth disease (CMT) phenotypes (CMT1B, CMT2I/J, CMTDI), Dejerine-Sottas syndrome, and congenital hypomyelination neuropathy. Here, we report phenotypic variability in a four-generation Chinese family with the MPZ mutation Asp121Asn. Genetic te...
متن کاملAxonal phenotype of Charcot-Marie-Tooth disease associated with a mutation in the myelin protein zero gene.
A French family had Charcot-Marie-Tooth disease type 2 (CMT2) which was characterised by late onset of peripheral neuropathy involvement, Argyll Robertson-like pupils, dysphagia, and deafness. Electrophysiological studies and nerve biopsy defined the neuropathy as axonal type. Genetic analysis of myelin protein zero (MPZ) found a mutation in codon 124 resulting in substitution of threonine by m...
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متن کاملHearing loss as the first feature of late-onset axonal CMT disease due to a novel P0 mutation.
A Czech family with three individuals carrying a novel mutation, 290 A-->T (Glu97Val), in the myelin protein zero gene (P0) is reported. The two eldest carriers developed progressive sensorineural hearing loss and abnormal pupillary reaction at age 18. These preceded the onset of the classic signs of Charcot-Marie-Tooth disease (CMT) by more than a decade. Sural nerve biopsy and nerve conductio...
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ورودعنوان ژورنال:
- Journal of neurology, neurosurgery, and psychiatry
دوره 77 4 شماره
صفحات -
تاریخ انتشار 2006