Charcot-Marie-Tooth 2A 환자들의 전기생리학적 특성
Electrophysiological Characteristics in Patients of Charcot-Marie-Tooth type 2A
김상범, 김승민, 최병옥, 선우일남, 박기덕, 조선영, 임정근,
소속 상세정보
김상범 ( Kim Sang-Beom )
경희대학교 의과대학 동서신의학병원 신경과학교실
김승민 ( Kim Seung-Min )
연세대학교 의과대학 신경과학교실
최병옥 ( Choi Byung-Ok )
이화여자대학교 의과대학 신경과학교실
선우일남 ( Sunwoo Il-Nam )
연세대학교 의과대학 신경과학교실
박기덕 ( Park Kee-Duk )
이화여자대학교 의과대학 신경과학교실
조선영 ( Cho Sun-Young )
이화여자대학교 의과대학 신경과학교실
임정근 ( Lim Jeong-Geun )
계명대학교 의과대학 신경과학교실
KMID : 0860920060080020075
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.
키워드
Charcot-Marie-Tooth disease;CMT2A;Mitofusin 2 (MFN2);Electrophysiology
원문 및 링크아웃 정보
등재저널 정보