慢性进行性眼外肌瘫痪和Kearns-Sayre综合征的线粒体DNA突变分析

被引:13
作者
王朝霞
袁云
高枫
戚豫
沈定国
陈清棠
机构
[1] 北京大学第一医院神经内科,北京大学第一医院神经内科,北京大学第一医院神经内科,北京大学第一医院中心实验室,医院神经科,北京大学第一医院神经内科,,,,
关键词
慢性进行性眼外肌瘫痪; Kearns-Sayre综合征; 线粒体DNA突变; Southern印迹;
D O I
暂无
中图分类号
R746 [神经肌肉疾病];
学科分类号
1002 ;
摘要
目的 探讨慢性进行性眼外肌瘫痪 (chronic progressive external ophthalmoplegia,CPEO)和 Kearns- Sayre综合征 (Kearns- Sayre syndrome,KSS)的线粒体 DNA (mitochondrial DNA,mt DNA)突变特点。方法 用 Southern印迹方法检测 7例 CPEO和 4例 KSS患者的肌肉组织 mt DNA,并进一步用聚合酶链反应产物直接测序来明确缺失的具体范围 ;用聚合酶链反应 -限制性内切酶分析法检测有无 mt D-NA A32 4 3G点突变。结果 发现 5例患者 (2例 CPEO和 3例 KSS)存在 mt DNA的大片段缺失 ;1例 KSS患者存在 A32 4 3G点突变。 5例大片段缺失的大小及缺失范围各不相同 ,从 3.0~ 8.0 kb不等 ,缺失型 mt D-NA占总 mt DNA的比例为 37.6 %~ 87.0 %。聚合酶链反应产物测序表明这 5例缺失类型均未见文献报道。结论 与 CPEO和 KSS患者相关的最常见的 mt DNA突变为大片段缺失 ,A32 4 3G点突变也可在少数患者中检测到。
引用
收藏
页码:5 / 10
页数:6
相关论文
共 16 条
[1]  
Mitochondrial myopathy diagnosis. Shoffner JM. Neurologic Clinics . 2000
[2]  
Mitochondrial disorders. Schapira AH. Current Opinion in Neurology . 2000
[3]  
Impairment of mitochondrial transcription termination by a point mutation associated with the MELAS subgroup of mitochondrial encephalomyopathies. Hess JF,Parisi MA,Bennett JL,et al. Nature . 1991
[4]  
A direct repeat is a hot spot for large-scale deletion of human mitochondrial DNA. Schon EA,Rizzuto R,Moraes CT,et al. Science . 1989
[5]  
Mitochondrial encephalomyopathies: gene mutation. Servidei S. Neuromuscular Disorders . 2001
[6]  
The mutation rate of the human mtDNA deletion mtDNA4977. Shenkar R,Navidi W,Tavare S,et al. The American Journal of Human Genetics . 1996
[7]  
The expanding clinical phenotype of the tRNALeu(UUR) A→G mutation at np3243 of mitochondrial DNA: diabetic embryopathy associated with mitochondrial cytopathy. Frigenbaum A,Chitayat D,Robinson B,et al. American Journal of Medical Genetics . 1996
[8]  
Mitochondrial myopathies: clinical and biochemical features of 30 patients with major deletions of muscle mitochondrial DNA. Holt IJ,Harding AE,Cooper JM,et al. Annals of Neurology . 1989
[9]  
Deletions of muscle mitochondrial DNA in mitochondrial myopathies: sequence analysis and possible mechanisms. Holt IJ,Harding AE,Morgan-Hughes JA. Nucleic Acids Research . 1989
[10]  
Muscle carnitine deficiency and lipid storage myopathy in patients with mitochondrial myopathy. Campos Y,Huertas R,Bautista J,et al. Muscle and Nerve . 1993