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Charcot-Marie-Tooth 2A 환자들의 전기생리학적 특성

Other Titles
 Electrophysiological Characteristics in Patients of Charcot-Marie-Tooth type 2A 
Authors
 김상범  ;  조선영  ;  박기덕  ;  임정근  ;  김승민  ;  선우일남  ;  최병옥 
Citation
 Journal of the Korean Association of EMG-Electrodiagnostic Medicine (대한근전도 전기진단의학회지), Vol.8(2) : 75-84, 2006 
Journal Title
 Journal of the Korean Association of EMG-Electrodiagnostic Medicine (대한근전도 전기진단의학회지) 
ISSN
 1229-6066 
Issue Date
2006
Keywords
Charcot-Marie-Tooth disease ; CMT2A ; Mitofusin 2 (MFN2) ; Electrophysiology
Abstract
Objectives: The aim of this study is to identify the electrophysiological characteristics in CMT2A patients with the MFN2 mutations. Methods: We examined mutations of MFN2 gene in 165 Korean CMT families. By criteria from European CMT consortium, 54 families belonged to CMT2. Mutations were confirmed by both strands sequencing. We administrated the CMT neuropathy score (CMTNS), based on patient’s symptoms, neurological examination and neurophysiological testing, and the functional disability scale (FDS) for evaluation of disease severity. Muscular strength was assessed manually with the standard MRC. Results: The electrophysiological patterns associated with MFN2 mutations were typical of axonal CMT. The electrophysiological data were markedly different between early onset (<10 years) and late onset (≥ 10 years) groups. All patients with early onset have a severe CMTNS (≥21), and FDS (≥6). However, most patients with late onset have a mild CMTNS (≤10), and FDS (≤3). Distal muscle strength, CMTNS, and FDS were well correlated with CMAPs of all motor nerves. No correlation was found between the degree of slowing of MNCV of median and ulnar nerves, and the degree of CMAP attenuation. Conclusions: Electrophysiological features in patients with MFN2 mutations were significantly different between early onset and late onset groups, and CMTNS is a valuable measure of length-dependent axonal CMT2A.
Files in This Item:
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurology (신경과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Seung Min(김승민) ORCID logo https://orcid.org/0000-0002-4384-9640
Sunwoo, Il Nam(선우일남)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/110720
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