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Chin. Phys. B, 2010, Vol. 19(3): 030508    DOI: 10.1088/1674-1056/19/3/030508
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Controlling intracellular Ca2+ spiral waves by the local agonist in the cell membrane

Qiu Kang(仇康)a), Tang Jun(唐军)b)† , Ma Jun(马军)c), and Luo Ji-Ming(罗继明)b)
a Department of Mathematics and Physics, Xuzhou Medical College, Xuzhou 221004, China; b College of Science, China University of Mining and Technology, Xuzhou 221008, China; c Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China
Abstract  A modified spatially extended Tang--Othmer Ca2+ model is used to study intracellular Ca2+ spiral waves numerically. It is found that, as a local stimulation, the local agonist-binding on the cell membrane,which enhances the local concentration of the messenger molecule inositol 1,4,5-trisphosphate(IP3), can influence the dynamics of the spiral waves. 1) Strong enough stimuli can change the spiral wave from a meandering to a rigidly rotating one. 2) On the other hand, strong enough stimuli can suppress the spiral wave from the system. It provides the theoretical clue for controlling the spiral waves by stimulating the cell membrane.
Keywords:  spiral wave      local stimuli      calcium signaling      IP3  
Received:  30 July 2009      Revised:  06 September 2009      Accepted manuscript online: 
PACS:  87.16.Uv (Active transport processes)  
  87.16.D- (Membranes, bilayers, and vesicles)  
  87.16.A- (Theory, modeling, and simulations)  
  82.39.Wj (Ion exchange, dialysis, osmosis, electro-osmosis, membrane processes)  
Fund: Project supported by the Xuzhou Medical College Foundation, China (Grant No.~08kj08).

Cite this article: 

Qiu Kang(仇康), Tang Jun(唐军), Ma Jun(马军), and Luo Ji-Ming(罗继明) Controlling intracellular Ca2+ spiral waves by the local agonist in the cell membrane 2010 Chin. Phys. B 19 030508

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