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首页> 外文期刊>Journal of Molecular and Cellular Cardiology >Arrhythmogenic role of the border between two areas of cardiac cell alignment
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Arrhythmogenic role of the border between two areas of cardiac cell alignment

机译:心脏细胞排列的两个区域之间边界的心律失常作用

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The goal of this study is to develop experimental and computational models of the excitation transition between areas of cardiac tissue with different anatomical anisotropy. Alignment of seeded neonatal rat cardiomyocytes was achieved with the aid of guiding polymer (PMGI) nanofibers, and two areas with orthogonal alignment were placed into a contact. It was found that the excitation wave crossing border between the areas with different alignment direction experiences substantial perturbation, up to the complete conduction block. In addition to the experimental study, this effect was analyzed computationally using generic FitzHugh-Nagumo reaction-diffusion model. It was shown that the non-monotonous changes of the excitation wave velocity on this boundary may be explained by the source/sink mismatch. Thus, the border may play pro-arrhythmogenic role. (C) 2014 Elsevier Ltd. All rights reserved.
机译:这项研究的目的是开发具有不同解剖各向异性的心脏组织区域之间的激发跃迁的实验和计算模型。借助引导聚合物(PMGI)纳米纤维,可以对接种的新生大鼠心肌细胞进行对齐,并将两个具有正交对齐方式的区域置于一个接触中。已经发现,在具有不同排列方向的区域之间的激发波交叉边界经历了很大的扰动,直到完整的传导块。除了实验研究之外,还使用通用的FitzHugh-Nagumo反应扩散模型对这一效应进行了计算分析。结果表明,在该边界上激发波速度的非单调变化可以用源/汇不匹配来解释。因此,边界可能起到促心律失常的作用。 (C)2014 Elsevier Ltd.保留所有权利。

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