Spontaneous Calcium Release in Cardiac Myocytes: Store Overload and Electrical Dynamics

Spontaneous Calcium Release in Cardiac Myocytes: Store Overload and Electrical Dynamics
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心肌细胞自发钙释放:存储过载和电动力学

DOI:
10.30707/spora1.1alexander
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发表时间:
2015
影响因子:
2.4
通讯作者:
L. Izu
L. Izu
中科院分区:
医学4区
文献类型:
--
作者:
A. Alexander;E. DeNardo;Eric T Frazier;Michael McCauley;Nicholas Rojina;Zana Coulibaly;B. Peercy;L. Izu

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心脏病是美国人死亡的主要原因。 心脏心律失常的一个原因是心肌细胞中的钙(Ca2+)处理不当。 我们调整了伊豆的数学模型(伊豆,2006),由Gobbert(Gobbert,2008),心肌细胞,或心肌细胞,包括钙从肌浆网(SR)释放,SR中的缓冲液的影响,特别是钙螯合蛋白,和Ca2+流入的影响,由于跨细胞膜的电压。 数学模型用C语言编码,使用并行计算(MPI)运行以有效地生成模型的模拟,并在Matlab中进行后处理。 基于计算机代码和模拟,我们的研究结果与已知的生物学模型和原理一致,使我们对影响心肌细胞中Ca2+动力学的几个因素有了全面的了解。
Heart disease is the leading cause of mortality in the United States.  One cause of heart arrhythmia is calcium (Ca2+) mishandling in cardiac muscle cells.  We adapt Izu's mathematical model (Izu, 2006), implemented by Gobbert (Gobbert, 2008), of cardiac muscle cells, or cardiomyocytes, to include calcium being released from the sarcoplasmic reticulum (SR), the effects of buffers in the SR, particularly calsequestrin, and the effects of Ca2+ influx due to voltage across the cell membrane.  The mathematical model is coded in C, run using parallel computing (MPI) to efficiently generate simulations of the model, and post-processed in Matlab.  Based on computer code and simulations, our findings aligned with known biological models and principles, giving us a thorough understanding of several factors that influence Ca2+ dynamics in cardiac myocytes.
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发表时间: 2008-08-21
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