NDLI: Origin and evolution of circular waves and spirals in Dictyostelium discoideum territories.

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Origin and evolution of circular waves and spirals in Dictyostelium discoideum territories.

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Origin and evolution of circular waves and spirals in Dictyostelium discoideum territories.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Pálsson, E. Cox, E. C.
Description	Author Affiliation: Pálsson E ( Program in Applied and Computational Mathematics, Princeton University, NJ 08544, USA.);
Abstract	Randomly distributed Dictyostelium discoideum cells form cooperative territories by signaling to each other with cAMP. Cells initiate the process by sending out pulsatile signals, which propagate as waves. With time, circular and spiral patterns form. We show that by adding spatial and temporal noise to the levels of an important regulator of external cAMP levels, the cAMP phosphodiesterase inhibitor, we can explain the natural progression of the system from randomly firing cells to circular waves whose symmetries break to form double- and single- or multi-armed spirals. When phosphodiesterase inhibitor is increased with time, mimicking experimental data, the wavelength of the spirals shortens, and a proportion of them evolve into pairs of connected spirals. We compare these results to recent experiments, finding that the temporal and spatial correspondence between experiment and model is very close.
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	3
Volume Number	93
Language	English
Publisher	National Academy of Sciences
Publisher Date	1996-03-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	3',5'-Cyclic-AMP Phosphodiesterases Metabolism Cell Communication Cyclic AMP Physiology Dictyostelium Glycoproteins Models, Biological Antagonists & Inhibitors Animals Cell Movement Kinetics Mathematics Signal Transduction Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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