Genome-Wide Linkage Analysis of Lipids in the Hypertension Genetic Epidemiology Network (HyperGEN) Blood Pressure Study

Genome-Wide Linkage Analysis of Lipids in the Hypertension Genetic Epidemiology Network (HyperGEN) Blood Pressure Study
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高血压遗传流行病学网络 (HyperGEN) 血压研究中脂质的全基因组连锁分析

DOI:
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发表时间:
2001
期刊:
Arteriosclerosis, Thrombosis and Vascular Biology
影响因子:
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通讯作者:
G. Heiss
G. Heiss
中科院分区:
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文献类型:
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作者:
H. Coon;M. Leppert;J. Eckfeldt;A. Oberman;R. Myers;J. M. Peacock;M. Province;P. Hopkins;G. Heiss

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对622对非裔美国人和649对白人兄弟姐妹进行了全基因组扫描,以进行定量的血脂测量,这些兄弟姐妹没有服用降脂药物,这些人是通过国家心肺和血液研究所(NHLBI)家庭血压计划的高血压遗传流行病学网络(HyperGEN)确定的。NHLBI哺乳动物基因分型服务对基因组中大致相等的391个标记进行了基因分型。根据性别和种族内的协变量调整每个表型,然后进行方差分量连锁分析,这是通过使用额外随机样本中的种族特定标记等位基因频率在种族内单独进行的。在非裔美国同胞配对中,20号染色体(28.6 cM)上对数转化的甘油三酯(TG)的最高Lod得分为2.77。在白人兄弟姐妹中,5号染色体上高密度脂蛋白胆固醇的最高得分为2.74(48.2 cM)。虽然没有获得评分>3.0,但在文献中其他基因组扫描中报告的几个区域发现了阳性评分。例如,在白人同胞对中,15号染色体(28.8 cM)上的TG得分为1.91。这一得分与其他两次基因组扫描中TG的阳性结果重叠。
Full genome scans were performed for quantitative lipid measurements in 622 African American and 649 white sibling pairs not taking lipid-lowering medications who were ascertained through the Hypertension Genetic Epidemiology Network (HyperGEN) of the National Heart, Lung, and Blood Institute (NHLBI) Family Blood Pressure Program. Genotypes for 391 markers spaced roughly equally throughout the genome were typed by the NHLBI Mammalian Genotyping Service. Each of the phenotypes was adjusted for covariates within sex and race and then subjected to variance components linkage analysis, which was performed separately within race by using race-specific marker allele frequencies from additional random samples. The highest lod score detected was 2.77 for logarithmically transformed triglyceride (TG) on chromosome 20 (at 28.6 cM) in the African American sibling pairs. The highest score detected in the white sibling pairs was 2.74 for high density lipoprotein cholesterol on chromosome 5 (at 48.2 cM). Although no scores >3.0 were obtained, positive scores were found in several regions that have been reported in other genome scans in the literature. For example, a score of 1.91 for TG was found on chromosome 15 (at 28.8 cM) in white sibling pairs. This score overlaps the positive findings for TG in 2 other genome scans.
圣安东尼奥家庭心脏研究中影响血浆高密度脂蛋白胆固醇水平的主要基因座。
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