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富含组氨酸的钙结合蛋白中的Ser96Ala变体与特发性扩张型心肌病中危及生命的室性心律失常有关。

The Ser96Ala variant in histidine-rich calcium-binding protein is associated with life-threatening ventricular arrhythmias in idiopathic dilated cardiomyopathy.

作者信息

Arvanitis Demetrios A, Sanoudou Despina, Kolokathis Fotis, Vafiadaki Elizabeth, Papalouka Vasiliki, Kontrogianni-Konstantopoulos Aikaterini, Theodorakis George N, Paraskevaidis Ioannis A, Adamopoulos Stamatios, Dorn Gerald W, Kremastinos Dimitrios Th, Kranias Evangelia G

机构信息

Molecular Biology Division, Biomedical Research Foundation, Academy of Athens, Athens, Greece.

出版信息

Eur Heart J. 2008 Oct;29(20):2514-25. doi: 10.1093/eurheartj/ehn328. Epub 2008 Jul 9.

DOI:10.1093/eurheartj/ehn328
PMID:18617481
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2567024/
Abstract

AIMS

To investigate whether genetic variants of the histidine-rich calcium (HRC)-binding protein are associated with idiopathic dilated cardiomyopathy (DCM) and its progression.

METHODS AND RESULTS

We screened 123 idiopathic DCM patients and 96 healthy individuals by single-strand conformation polymorphism analysis and direct sequencing for genetic variants in HRC. Six polymorphisms were detected: Leu35Leu (A/G), Ser43Asn (G/A), Ser96Ala (T/G), Glu202_Glu203insGlu (-/GAG), Asp261del (GAT/-), and an in-frame insertion of 51 amino acids at His321. The analysis of their frequencies did not reveal any significant correlation with DCM development. However, the Ser96Ala polymorphism exhibited a statistically significant correlation with the occurrence of life-threatening ventricular arrhythmias. During a follow-up of 4.02 +/- 2.4 years, the risk for ventricular arrhythmias was higher (HR, 9.620; 95% CI, 2.183-42.394; P = 0.003) in the Ala/Ala patients, compared with Ser/Ser homozygous patients. On multivariable Cox regression analysis, the Ser96Ala polymorphism was the only significant genetic arrythmogenesis predictor in DCM patients (HR, 4.191; 95% CI, 0.838-20.967; P = 0.018).

CONCLUSION

The Ser96Ala genetic variant of HRC is associated with life-threatening ventricular arrhythmias in idiopathic DCM and may serve as an independent predictor of susceptibility to arrhythmogenesis in the setting of DCM.

摘要

目的

研究富含组氨酸的钙(HRC)结合蛋白的基因变异是否与特发性扩张型心肌病(DCM)及其发展相关。

方法与结果

我们通过单链构象多态性分析和直接测序,对123例特发性DCM患者和96例健康个体进行HRC基因变异筛查。检测到6种多态性:Leu35Leu(A/G)、Ser43Asn(G/A)、Ser96Ala(T/G)、Glu202_Glu203insGlu(-/GAG)、Asp261del(GAT/-)以及His321处51个氨基酸的框内插入。对其频率的分析未发现与DCM发生有任何显著相关性。然而,Ser96Ala多态性与危及生命的室性心律失常的发生具有统计学显著相关性。在4.02±2.4年的随访期间,与Ser/Ser纯合患者相比,Ala/Ala患者发生室性心律失常的风险更高(HR,9.620;95%CI,2.183 - 42.394;P = 0.003)。在多变量Cox回归分析中,Ser96Ala多态性是DCM患者中唯一显著的遗传性心律失常预测因子(HR,4.191;95%CI,0.83 - 20.967;P = 0.018)。

结论

HRC的Ser96Ala基因变异与特发性DCM中危及生命的室性心律失常相关,可能作为DCM情况下心律失常易感性的独立预测因子。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e99/2638567/6983b3e2335d/ehn32806.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e99/2638567/48ef766302b5/ehn32801.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e99/2638567/6983b3e2335d/ehn32806.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e99/2638567/48ef766302b5/ehn32801.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e99/2638567/720d2907caf4/ehn32802.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e99/2638567/d0a924eb6912/ehn32803.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e99/2638567/6bf693445a51/ehn32804.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e99/2638567/02f5e2a87b00/ehn32805.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9e99/2638567/6983b3e2335d/ehn32806.jpg

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