Key result
An integrated computational model successfully reproduced in vivo cardiac energy metabolite levels, identifying cytoplasmic inorganic phosphate as a key regulator of mitochondrial respiration.
A computational model integrating oxygen transport and mitochondrial metabolism successfully explains the observed stability of cardiac energy metabolites at low to moderate workloads and during graded hypoperfusion.
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Animal model identifies Pi as regulator at moderate workloads; leaves open human validation and mechanisms at high cardiac demand.
Daniel Beard (2006) studied Cardiac energy metabolism. Computational modeling of oxygen transport and cellular energetics vs. Experimental in vivo data was evaluated on Prediction of ATP, ADP, CrP, and inorganic phosphate levels. An integrated computational model successfully reproduced in vivo cardiac energy metabolite levels, identifying cytoplasmic inorganic phosphate as a key regulator of mitochondrial respiration.
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