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JACC:酒精性心肌病的遗传研究

2018-05-21 MedSci MedSci原创

酒精性心肌病(ACM)是由慢性酒精过度摄入引起的左室扩张和功能受损。然而酒精引起心脏毒性的原因尚远未阐明。本研究的目的旨在评估心肌病相关基因的变异在ACM病理发生中的作用。本研究纳入了141例ACM患者,716例扩张型心肌病(DCM)患者和445名正常对照。对所有研究对象分析比较了9个DCM相关基因的错义突变的发生比率,并评估了基因型和酒精摄入对DCM分型的影响。分析结果显示,DCM致病基因的变异

酒精性心肌病(ACM)是由慢性酒精过度摄入引起的左室扩张和功能受损。然而酒精引起心脏毒性的原因尚远未阐明。本研究的目的旨在评估心肌病相关基因的变异在ACM病理发生中的作用。

本研究纳入了141例ACM患者,716例扩张型心肌病(DCM)患者和445名正常对照。对所有研究对象分析比较了9个DCM相关基因的错义突变的发生比率,并评估了基因型和酒精摄入对DCM分型的影响。分析结果显示,DCM致病基因的变异在ACM患者的发生率要明显高于对照(13.5% vs. 2.9%; p = 1.2 ×10-5),但在ACM患者和DCM患者中的发生率相似(p = 0.12)。另外,伴有肌联蛋白截短突变(TTNtv)的摄入过度酒精的DCM患者的左室射血分数要低于无TTNtv的患者(p < 0.007),但TTNtv对ACM患者的预后和治疗康复无明显影响。

研究结果显示,肌联蛋白截短突变在酒精性心肌病患者中的发生率较高,并与摄入过度酒精的扩张型心肌病患者的左室射血分数降低相关。

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    2019-02-21 hbwxf
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