一个研究神经元胞外空间非均匀性导致的信号传递的有效框架

IF 2.2 4区 生物学 Q3 BIOPHYSICS
Biswajit Das, Satyabrat Malla Bujar Baruah, Soumik Roy, Dhruba Kumar Bhattacharyya
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引用次数: 0

摘要

神经传导速度研究对于理解神经系统疾病至关重要,如肌萎缩侧索硬化症、吉兰-巴罗综合征、腓骨肌萎缩症、腕管综合征、坐骨神经紊乱和多发性硬化症,这些疾病的特征是信号传导减慢。细胞外空间(ECS)和神经纤维中的各种离子调节信号的传播,因此分析ECS对信号传播的影响至关重要。本研究考察了非均匀细胞外空间如何影响神经传导速度,使用了一种改进的电缆模型,该模型包含了ECS参数,如直径和阻力。结果表明,非均匀胞外空间显著影响了传播信号的传导速度,导致传导速度、信号延迟、相移和共振的变化。利用ECS和神经纤维的各种电生理参数组合来模拟广泛的生物条件,对该模型进行了彻底的检查,模拟结果与现有的研究结果一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

An effective framework to study signal transmission due to non-homogeneous extracellular space in neuron

An effective framework to study signal transmission due to non-homogeneous extracellular space in neuron

An effective framework to study signal transmission due to non-homogeneous extracellular space in neuron

Nerve conduction velocity studies are essential to understanding neurological disorders like ALS, Guillain-Barré syndrome, Charcot-Marie-Tooth disease, carpal tunnel syndrome, sciatic nerve disorders, and multiple sclerosis, which are marked by slowed signal conduction. Various ions in the extracellular space (ECS) and the nerve fiber regulate signal propagation, making it crucial to analyze ECS’s impact on signal transmission. This study examines how a non-homogeneous extracellular space affects nerve conduction velocity using a modified cable model that incorporates ECS parameters such as its diameter and resistance. The results suggest that a non-homogeneous extracellular space significantly impacts the conduction velocity of propagating signals, leading to variations in the conduction velocity, signal delays, phase shifts, and resonance. The model has been thoroughly examined using various combinations of electrophysiological parameters of the ECS and nerve fibers to simulate a wide range of biological conditions, and the simulated results have been consistent and align with the existing findings.

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来源期刊
Journal of Biological Physics
Journal of Biological Physics 生物-生物物理
CiteScore
3.00
自引率
5.60%
发文量
20
审稿时长
>12 weeks
期刊介绍: Many physicists are turning their attention to domains that were not traditionally part of physics and are applying the sophisticated tools of theoretical, computational and experimental physics to investigate biological processes, systems and materials. The Journal of Biological Physics provides a medium where this growing community of scientists can publish its results and discuss its aims and methods. It welcomes papers which use the tools of physics in an innovative way to study biological problems, as well as research aimed at providing a better understanding of the physical principles underlying biological processes.
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