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学科主题神经病学
夏科-马里-图斯病2A2型一家系的临床病理特点
其他题名Clinical and pathological features in Charcot-Marie-Tooth disease type 2A2: a family report
乔晓会; 李越星; 洪道俊; 袁云
关键词夏科-马里-图斯病 膜蛋白质类 线粒体蛋白质类 突变 Charcot-marie-tooth Disease Membrane Proteins Mitochondrial Proteins Mutation
刊名中华神经科杂志
2010
DOI10.3760/cma.j.issn.1006-7876.2010.05.008
43期:5页:341-344
收录类别中国科技核心期刊 ; CSCD
文章类型Journal Article
摘要目的 报道一个早发型夏科-马里-图斯病(CMT)2A2家系,探讨其临床和病理特点.方法 该家系共有5例患者,呈常染色体显性遗传,先证者为36岁女性,6岁开始出现下肢进行性无力,8岁出现双足内翻.家族中另有2例男性和2例女性发病,发病年龄3~7岁,主要表现为缓慢进展的四肢远端肌肉无力、萎缩,伴随四肢远端感觉减退、腱反射减退及关节挛缩.先证者和其儿子的上肢感觉神经、下肢感觉和运动神经诱发电位波幅不能引出.对先证者左侧腓肠神经进行活体组织病理检查.对先证者和其他4例家系患者、3名无症状家系成员行MFN2基因测序.结果 病理检查可见腓肠神经有髓纤维数目重度减少,以大有髓神经纤维减少为主,伴随个别有髓神经纤维再生簇结构以及不典型的洋葱球样结构.电镜下可见轴索中线粒体聚集,未发现线粒体结构异常.5例患者存在MFN2基因R94W突变,无症状家系成员无此突变.结论 我国存在早发型CMT2A2家系,患者周围神经缺乏有髓神经纤维再生改变,提示MFN2基因突变对神经元的损害更大. Objective To report clinical and pathological features in a Chinese family with CharcotMarie-Tooth disease type 2A2 (CMT2A2). Methods There were 5 patients (2 male and 3 female) in a family with an autosomal dominant inheritance pattern. The index case was a 36 years old woman. She developed progressive distal limb weakness at the age of 6, with pescavus at the age of 8. Other 4 family members presented with similar symptoms between the age of 3-7. Physical examination showed distal limb weakness and wasting, loss of sensory and contracture in all of them. Nerve conduction velocity revealed non-potential in several motor and sensory nerves in the proband and her son. Sural nerve biopsy was performed on the proband. The sequence of MFN2 gene was analyzed in DNA from 5 patients and 3 asymptomatic members. Results Sural nerve biopsy revealed severe loss of myelinated fibers with few regenerating clusters. Electron microscopy revealed aggregation of mitochondrian in the axons. A R94W mutation in MFN2 gene has been identified in 5 patients, but not in unaffected members. Conclusions We confirmed Chinese CMT2A2. Absent of regenerating cluster in the nerve indicated that MFN2 mutation predominantly resulted in lesions in the neurons.
语种中文
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文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/41189
专题北京大学第一临床医学院_神经内科
作者单位北京大学第一医院神经内科,100034
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乔晓会,李越星,洪道俊,等. 夏科-马里-图斯病2A2型一家系的临床病理特点[J]. 中华神经科杂志,2010,43(5):341-344.
APA 乔晓会,李越星,洪道俊,&袁云.(2010).夏科-马里-图斯病2A2型一家系的临床病理特点.中华神经科杂志,43(5),341-344.
MLA 乔晓会,et al."夏科-马里-图斯病2A2型一家系的临床病理特点".中华神经科杂志 43.5(2010):341-344.
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