| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Research Abstract |
We established glass microelectrode techniques to record the electrical activity of the pulmonary vein myocardium. We also established experimental protocols to constantly isolate pulmonary vein cardiomyocytes and load them with calcium sensitive fluorescent probes, and succeeded in high speed confocal imaging analysis of the intracellular calcium oscillation which precede their electrical activity. Pharmacological analyses led us to the understanding that increased intracellular calcium activates the sodium-calcium exchanger generates a depolarizing inward membrane current, which triggers electrical activity.
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