Charcot-Marie-Tooth disease (CMT) is the most common form of hereditary peripheral neuropathy. The main axonal form of CMT, CMT2A, preferentially affects peripheral neurons with the longest neurites. CMT2A has been recently linked to mutations in the mitofusin 2 (Mfn2) gene. Mfn2 participates in mitochondrial fusion a process that together with mitochondrial fission, contributes to mitochondrial morphology. Many hypotheses have been postulated to understand how mutations in Mfn2 lead to CMT2A. In this review, we will describe the physiological role of Mfn2, the pathophysiology of CMT2A and current hypotheses about the deleterious role of mutant Mfn2 in neuronal function.
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http://dx.doi.org/10.1016/j.expneurol.2009.05.003 | DOI Listing |
Genes (Basel)
November 2024
Neurology Unit, Department of Translational Medicine, Maggiore Della Carità Hospital, University of Piemonte Orientale, 28100 Novara, Italy.
Background/objectives: Axonal Charcot-Marie-Tooth disease type 2 (CMT2) accounts for 24% of Hereditary Motor/Sensory Peripheral Neuropathies. CMT2 type GG, due to four distinct heterozygous mutations in the Golgi brefeldin A resistant guanine nucleotide exchange factor 1 () gene (OMIM 606483), was described in seven cases from four unrelated families with autosomal dominant inheritance. It is characterized by slowly progressive distal muscle weakness and atrophy, primarily affecting the lower limbs.
View Article and Find Full Text PDFOphthalmic Genet
January 2025
Department of Ophthalmology, Casey Eye Institute, Oregon Health & Science University, Portland, Oregon, USA.
Introduction: Phosphoribosyl pyrophosphate synthetase 1 () is an X-linked gene critical for nucleotide metabolism. Pathogenic variants cause three overlapping phenotypes: Arts syndrome (severe neurological disease), Charcot-Marie-Tooth type 5 [CMTX5] (peripheral neuropathy), and non-syndromic sensorineural hearing loss (SNHL). Each may be associated with retinal dystrophy.
View Article and Find Full Text PDFProsthet Orthot Int
January 2025
Centre de recherche du CHU Sainte-Justine, Département des sciences de l'activité physique, Faculté des sciences, Université du Québec à Montréal, Montréal, Canada.
Background: Charcot-Marie-Tooth (CMT) is a progressive disease resulting in distal sensory deficit and muscular weakness. As the disease progresses, most children develop a cavovarus foot deformity. Foot orthoses (FO) are widely prescribed in CMT to support the foot and improve gait, but there is a lack of guidelines for their conception.
View Article and Find Full Text PDFEur Heart J Case Rep
January 2025
Department of Internal Medicine and Cardiology, Faculty of Medicine, University Hospital Ostrava, University of Ostrava, 17. listopadu 1790, 708 52 Ostrava, Czech Republic.
Background: Charcot-Marie-Tooth is the most common inherited neuromuscular disorder. Rarely, it can be associated with heart failure and various arrhythmic disturbances. This case illustrates the challenges of making decisions to prevent sudden cardiac death in a patient with Charcot-Marie-Tooth disease.
View Article and Find Full Text PDFHealth Care Transit
February 2024
Department of Psychological and Brain Sciences, Washington University in St. Louis, 1 Brookings Dr., St. Louis, MO 63130, United States.
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