Spatial propagation of electrical signals in circular biofilms: A combined experimental and agent-based fire-diffuse-fire study.
Spatial propagation of electrical signals in circular biofilms: A combined experimental and agent-based fire-diffuse-fire study.
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圆形生物膜中电信号的空间传播:实验和基于试剂的火-扩散-火相结合的研究。
DOI:
10.1103/physreve.100.052401
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Blee JA
中科院分区:
文献类型:
--
作者:
Blee JA
Bacterial biofilms are a risk to human health, playing critical roles in persistent infections. Recent studies have observed electrical signaling in biofilms and thus biofilms represent a new class ofactive excitable matterin which cell division is the active process and the spiking of the individual bacterial cells is the excitable process. Electrophysiological models have predominantly been developed to describe eukaryotic systems, but we demonstrate their use in understanding bacterial biofilms. Ouragent-based fire-diffuse-fire(ABFDF) model successfully simulates the propagation of both centrifugal (away from the center) and centripetal (toward the center) electrical signals through biofilms ofBacillus subtilis. Furthermore, the ABFDF model allows realistic spatial positioning of the bacteria in two dimensions to be included in the fire-diffuse-fire model and this is the crucial factor that improves agreement with experiments. The speed of propagation is not constant and depends on the radius of the propagating electrical wave front. Centripetal waves are observed to move faster than centrifugal waves, which is a curvature driven effect and is correctly captured by our simulations.
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DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
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通讯作者:
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DOI:
--
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1977
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--
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2012
期刊:
Journal of Physiology
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作者:
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5.5
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通讯作者:
HUXLEY, AF