Table 1.

AP characteristics of cardiac myocytes in WT and M₃-overexpressing (M₃Tg) mice from both control and myocardial I/R injury.

Group	na	RMP (mV)	Overshoot (mV)	Amplitude of action (mV)	APD (ms)
WT	6	−54.3 ± 0.8	40.9 ± 3.2	95.3 ± 3.7	182.7 ± 16.0
M3Tg	6	−63.3 ± 1.5b	40.7 ± 3.1	104.1 ± 3.4	130.2 ± 16.7c
WT I/R	14	−54.5 ± 0.9	32.1 ± 2.6	86.7 ± 3.5	161.1 ± 10.4
M3Tg I/R	14	−56.1 ± 1.2	34.8 ± 2.6	90.9 ± 3.5	131.6 ± 7.9d

Data are mean ± SEM.

^aThe number of cardiac myocytes.

^bP < 0.01,

^cP < 0.05 versus WT group.

^dP < 0.05 versus WT I/R group.