Figure 6.

Simulated dependences of AP amplitudes (Panels A,D), [Ca2+]i transients (Panels B,E), and interspike intervals (Panels C,F) for mouse ventricular myocytes on steady-state injected current Istim. Data for WT and TNF-α overexpressing mice are shown in Panels A–C and D–F, respectively. AP amplitude, [Ca2+]i transients, and interspike intervals were calculated in time interval from 40 to 50 s. For calculation of interspike intervals the threshold potential was set to Vth = −40 mV. INa with slow inactivation.