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原发性红斑肢痛症中SCN9A基因的突变热点
引用本文:张黎黎,林志淼,马志红,杨艳玲,于力,杨勇. 原发性红斑肢痛症中SCN9A基因的突变热点[J]. 中国皮肤性病学杂志, 2006, 20(11): 649-651
作者姓名:张黎黎  林志淼  马志红  杨艳玲  于力  杨勇
作者单位:1. 北京大学第一医院皮肤科,北京,100034
2. 牡丹江医学院附属医院皮肤科,黑龙江,牡丹江,157010
3. 北京大学第一医院儿科,北京,100034
4. 广州市第一人民医院儿科,广东,广州,510180
基金项目:北京市科技攻关计划;国家自然科学基金
摘    要:目的研究原发性红斑肢痛症1个家系及两个散发病例的SCN9A基因突变情况,探讨该基因的突变热点。方法提取基因组DNA,PCR扩增SCN9A所有外显子并测序,对比分析已报道的SCN9A基因突变。结果在该家系患者发现SCN9A基因突变为C1185G,对应氨基酸改变为N395K,两个散发病例SCN9A基因突变均为T2543C,对应氨基酸改变为I848T;这两个突变位点在既往文献中均有报道。结论SCN9A基因N395K和I848T突变为该家系和散发患者出现临床症状的原因,推测L858,I848和N395可能为该基因的突变热点。

关 键 词:原发性红斑肢痛症  SCN9A基因  基因突变  突变热点
文章编号:1001-7089(2006)11-0649-02
收稿时间:2006-08-01
修稿时间:2006-08-012006-09-07

Hot Mutation Spots of SCN9A Gene in Primary Erythermalgia
ZHANG Li-li, LIN Zhi-miao, MA Zhi-hong,et al. Hot Mutation Spots of SCN9A Gene in Primary Erythermalgia[J]. The Chinese Journal of Dermatovenereology, 2006, 20(11): 649-651
Authors:ZHANG Li-li   LIN Zhi-miao   MA Zhi-hong  et al
Affiliation:Department of Dermatology, the First Hospital of Peking University, Beijing 100034, China
Abstract:Objective To identify SCN9A gene mutations in one family and two sporadic patients with primary erythermalgia and to investigate the SCN9A gene hot mutation spots. Methods Mutations in SCN9A gene were detected by PCR amplification of all the 26 coding exons of SCN9A gene and sequencing. Review the literatures about primary Erythermalgia and analysis the SCN9A gene mutation spots . Results We found N395K mutation in the family and I848T mutation in the two sporadic patients in SCN9A gene. These two mutation spots have been reported previously. Conclusion N395K and I848T mutations are the causes of clinical phenotypes of these patients;L858 ,I848 and N395 may be the hot mutation spots of SCN9A gene in primary erythermalgia.
Keywords:Primary Erythermalgia    SCN9A gene    C, ene mutation    Hot mutation spots
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