Synergistic Effects between Phosphorylation of Phospholamban and Troponin I Promote Relaxation at Higher Heart Rate

Figure 5

Resting and peak calcium concentrations in cardiomyocytes and time from peak to 75% decay (TD₇₅) under different frequencies of stimulations with and without ISO treatment. Data are mean ± SEM, 𝑛 = at least 30 myocytes from six hearts for each concentration in each group. At least 5 myocytes were from each heart. *𝑃<0.05 or **𝑃<0.01  versus baseline.

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