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Excitation-contraction coupling/mitochondrial energetics (ECME) model (Cortassa et al. 2006)
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"An intricate network of reactions is involved in matching energy supply with demand in the heart. This complexity arises because energy production both modulates and is modulated by the electrophysiological and contractile activity of the cardiac myocyte. Here, we present an integrated mathematical model of the cardiac cell that links excitation-contraction coupling with mitochondrial energy generation. The dynamics of the model are described by a system of 50 ordinary differential equations. The formulation explicitly incorporates cytoplasmic ATP-consuming processes associated with force generation and ion transport, as well as the creatine kinase reaction. Changes in the electrical and contractile activity of the myocyte are coupled to mitochondrial energetics through the ATP, Ca21, and Na1 concentrations in the myoplasmic and mitochondrial matrix compartments. ..."
Cortassa S, Aon MA, Marbán E, Winslow RL, O'Rourke B (2003) An integrated model of cardiac mitochondrial energy metabolism and calcium dynamics.
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Neuron or other electrically excitable cell;
I L high threshold;
C or C++ program;
Temporal Pattern Generation;
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I L high threshold
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Time V Nai Ki Cai CaNSR CaSS CaJSR ATPi Cam ADPm Dpsi NADH ISOC AKG SCoA Succ FUM MAL Oaa
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