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家族性高胆固醇血症患者低密度脂蛋白受体基因复合杂合突变分析
引用本文:蔺洁,王绿娅,潘晓冬,肖文虎,王旭,杜兰平,姜志胜.家族性高胆固醇血症患者低密度脂蛋白受体基因复合杂合突变分析[J].现代生物医学进展,2009,9(19).
作者姓名:蔺洁  王绿娅  潘晓冬  肖文虎  王旭  杜兰平  姜志胜
作者单位:1. 南华大学医学院心血管病研究所,湖南省动脉粥样硬化学重点实验室,湖南,衡阳,421001;首都医科大学附属北京安贞医院,北京市心肺血管疾病研究所,北京,100029
2. 首都医科大学附属北京安贞医院,北京市心肺血管疾病研究所,北京,100029
3. 南华大学医学院心血管病研究所,湖南省动脉粥样硬化学重点实验室,湖南,衡阳,421001
基金项目:国家自然科学基金,北京市自然科学基金
摘    要:目的:对1例临床确诊为纯合型家族性高胆固醇血症(FH)先证者及其核心家系成员进行基因检测分析,探讨患儿发病的分子病理基础.方法:收集先证者及父母血标本及临床资料,酚氯仿法提取基因组DNA,DNA直接测序方法检测低密度脂蛋白受体(LDL-R)基因18个外显子和启动子及载脂蛋白B(ApoB100)R3500Q位点,核苷酸序列分析结果与Gen Bank比对寻找突变.结果:(1)先证者三尖瓣轻度关闭不全,先证者父母双侧颈总动脉内-中膜增厚,先证者母亲左侧颈内动脉起始处后壁多发混合回声斑块(2)该家系排除ApoB100基因R3500Q突变;(3)先证者LDL-R基因第13外显子发生A606T和D601Y复合杂合突变,前者第1879位G→A碱基置换,导致丙氨酸改变为苏氨酸,后者为1864位G>T碱基置换,导致天冬氨酸改变为酪氨酸,其父为携带A606T突变的杂合子,其母为携带D601Y突变的杂合子.结论:先证者LDL-R基因存在A606T和D601Y复合杂合突变,它们分别来源于父系及母系遗传.

关 键 词:家族性高胆固醇血症  复合杂合  基因突变  低密度脂蛋白受体

Familial Hypercholesterolemia due to Mutation of Low Density Liporotein Receptor Gene
LIN Jie,WANG Lu-ya,PAN Xiao-dong,XIAO Wen-hu,WANG Xu,Du Lan-ping,JIANG Zhi-sheng.Familial Hypercholesterolemia due to Mutation of Low Density Liporotein Receptor Gene[J].Progress in Modern Biomedicine,2009,9(19).
Authors:LIN Jie  WANG Lu-ya  PAN Xiao-dong  XIAO Wen-hu  WANG Xu  Du Lan-ping  JIANG Zhi-sheng
Institution:LIN Jie1,2,WANG Lu-ya2,PAN Xiao-dong2,XIAO Wen-hu1,WANG Xu2,DU Lan-ping2,JIANG Zhi-sheng1(1 Institute of Cardiovascular Diseases,Key Laboratory for Arteriosclerology of Hunan Province,University of South China,421001,2 Beijing Anzhen Hospital Capital Medical University Beijing Institute of Heart Lung and Blood Vessel Diseases,100029)
Abstract:Objective:Genetic testing for one clinical proband with familial hypercholesterolemia(FH) and its core family members was performed to investigate the molecular pathological basis for the disease onset.Methods: Blood samples and clinical data were collected from the proband and the parents.They would undergo examinations of electrocardiogram and ultrasound.Phenol-chloroform method was applied for extraction of the family genome and DNA from both parents and the patient for verification.Direct sequencing for...
Keywords:Familial hypercholesterolemia  Gene mutation  Low-density lipoprotein receptor  Compound heterozygosis mutation  
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