A null mutation in human APOC3 confers a favorable plasma lipid profile and apparent cardioprotection.

A null mutation in human APOC3 confers a favorable plasma lipid profile and apparent cardioprotection.
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DOI:
10.1126/science.1161524
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发表时间:
2008-12-12
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Shuldiner AR
Shuldiner AR
中科院分区:
其他
文献类型:
--
作者:
Pollin TI;Damcott CM;Shen H;Ott SH;Shelton J;Horenstein RB;Post W;McLenithan JC;Bielak LF;Peyser PA;Mitchell BD;Miller M;O'Connell JR;Shuldiner AR

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载脂蛋白C-III(apoC-III)抑制甘油三酯水解,并与冠状动脉疾病有关。通过全基因组关联研究,我们发现约5%的兰开斯特阿米什人是编码apoC-III(APOC 3)的基因中无效突变(R19 X)的杂合携带者,因此,表达的apoC-III量为非携带者的一半。突变携带者与非携带者相比,空腹和餐后血清甘油三酯水平较低,HDL-胆固醇水平较高,LDL-胆固醇水平较低。亚临床动脉粥样硬化,测量冠状动脉钙化,是不常见的携带者比非携带者,这表明终身缺乏apoC-III有心脏保护作用。
Apolipoprotein C-III (apoC-III) inhibits triglyceride hydrolysis and has been implicated in coronary artery disease. Through a genome-wide association study, we have found that about 5% of the Lancaster Amish are heterozygous carriers of a null mutation (R19X) in the gene encoding apoC-III (APOC3) and, as a result, express half the amount of apoC-III present in noncarriers. Mutation carriers compared to noncarriers had lower fasting and postprandial serum triglycerides, higher levels of HDL-cholesterol and lower levels of LDL-cholesterol. Subclinical atherosclerosis, as measured by coronary artery calcification, was less common in carriers than noncarriers, suggesting that lifelong deficiency of apoC-III has a cardioprotective effect.
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