JAMA:LPL基因突变与冠状动脉疾病相关!

2017-03-08 MedSci MedSci原创

脂蛋白脂肪酶(LPL)的活性是从循环中清除富含甘油三酯的脂蛋白的限速步骤。破坏LPL基因(LPL)突变导致的酶活性终身缺乏,并且可以提供LPL与人类疾病的关系线索。近期,一项发表在权威杂志JAMA上的研究旨在确定LPL中的罕见和/或常见变异型是否与早发性冠状动脉疾病(CAD)相关。在此项横断面研究中,在多国心肌梗死遗传学联盟的10个CAD病例对照队列中进行LPL测序,并且在2010年至2015年期

脂蛋白脂肪酶(LPL)的活性是从循环中清除富含甘油三酯的脂蛋白的限速步骤。破坏LPL基因(LPL)突变导致的酶活性终身缺乏,并且可以提供LPL与人类疾病的关系线索。


近期,一项发表在权威杂志JAMA上的研究旨在确定LPL中的罕见和/或常见变异型是否与早发性冠状动脉疾病(CAD)相关。

在此项横断面研究中,在多国心肌梗死遗传学联盟的10个CAD病例对照队列中进行LPL测序,并且在2010年至2015年期间是Geisinger健康系统DiscovEHR队列的嵌套的CAD病例对照队列中测序。常见变异体在2012年和2014年之间全球脂类遗传学联盟中的305699个个体和CARDIoGRAM Exome Consortium中120600个个体中测序。

LPL中的罕见损伤突变包括在人类遗传学数据库中被注释为致病性的功能丧失变体和错义变体,或者为鉴定损伤蛋白质功能突变的计算机预测算法预测损伤。LPL基因区域中的常见变异体包括与循环甘油三酯水平独立相关的变体。

此项研究结果显示:在46891个具有LPL基因测序数据的个体中,平均(SD)年龄为50(12.6)年,51%为女性。包括32646名对照参与者中的105名(0.32%)和14245名早发CAD 中的83名(0.58%),共有188名参与者(0.40%; 95%CI,0.35%-0.46%)携带LPL损伤性突变,。与46703非携带者相比,LPL损伤突变的188个杂合携带者显示更高的血浆甘油三酯水平(19.6mg / dL; 95%CI,4.6-34.6mg / dL)和更高的CAD几率(优势比= 1.84; 95% CI,1.35-2.51; P <0.001)。对6种常见LPL变异体的分析导致CAD的优势比为1.51(95%CI,1.39-1.64; P = 1.1×10-22)(甘油三酯每增加1-SD)。

此项研究表明:LPL中罕见破坏性突变的存在与更高的甘油三酯水平和冠状动脉疾病的存在显着相关。然而,需要进一步研究以评估是否存在杂合脂蛋白脂肪酶缺乏可导致冠状动脉疾病的因果机制。

原始出处:
Khera AV, Won HH, et al. Association of Rare and Common Variation in the Lipoprotein Lipase Gene With Coronary Artery Disease.JAMA. 2017 Mar 7;317(9):937-946. doi: 10.1001/jama.2017.0972. 

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    2017-03-25 lisa438
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    2017-04-18 jyzxjiangqin

    LPL基因突变与冠状动脉疾病相关。

    0

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    2017-03-13 jyzxjiangqin

    冠心病危险因素。

    0

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