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Conference Papers Year : 2012

Topology drives calcium wave propagation in 3D astrocyte networks

Abstract

Glial cells are non-neuronal cells that constitute the majority of cells in the human brain and significantly modulate information processing via permanent cross-talk with the neurons. Astrocytes are also themselves inter-connected as networks and communicate via chemical wave propagation. How astrocyte wave propagation depends on the local prop- erties of the astrocyte networks is however unknown. In the present work, we investigate the influence of the character- istics of the network topology on wave propagation. Using a model of realistic astrocyte networks (> 1000 cells em- bedded in a 3d space), we show that the major classes of propagations reported experimentally can be emulated by a mere variation of the topology. Our study indicates that calcium wave propagation is favored when astrocyte connec- tions are limited by the distance between the cells, which means that propagation is better when the mean-shortest path of the network is larger. This unusual property sheds new light on consistent reports that astrocytes in vivo tend to restrict their connections to their nearest neighbors
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Dates and versions

hal-00758998 , version 1 (29-11-2012)

Identifiers

  • HAL Id : hal-00758998 , version 1

Cite

Jules Lallouette, Hugues Berry. Topology drives calcium wave propagation in 3D astrocyte networks. European Conference on Complex Systems 2012, 2012, Bruxelles, Belgium. pp.453-463. ⟨hal-00758998⟩
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