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. Author manuscript; available in PMC: 2012 Nov 1.
Published in final edited form as: J Mol Cell Cardiol. 2011 Jul 28;51(5):740–748. doi: 10.1016/j.yjmcc.2011.07.018

Figure 2.

Figure 2

The relationship between ATP, cAMP and the spontaneous beating rate in SANC. (A) Decreasing the spontaneous beating rate is associated with a decrease in the cAMP level (n=3 for each drug). (B) The decrease in the cAMP level is linked to a decrease in the ATP level (n=5 for each drug) in SANC. Thus a decrease in spontaneous beating rate is associated with reductions in both cAMP and ATP (B and C) and a reduction in ATP is linked to the reduction in cAMP. (D) In contrast, to SANC, a decrease in the electrical stimulation rate (3Hz vs. quiescent) of VM does not decrease the ATP level.