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 enha...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.展开更多
基金Project supported by the Xuzhou Medical College Foundation,China (Grant No. 08kj08)
文摘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.
