n APA(mV) RP(mV) APD75(ms) APD90(ms) Vmax (V/s)
  Control   8   117.4 ± 1.2   -80.9 ± 0.5   77.0 ± 2.2   94.1 ± 2.0   182.8 ± 2.5
Quercetin            
  0.1 mM   8   117.6 ± 1.2   -80.6 ± 0.6   78.6 ± 2.4   95.0 ± 2.1   182.1 ± 1.2
  0.3 mM   8   117.8 ± 1.1   -80.7 ± 1.0   79.8 ± 3.8   97.3 ± 2.0   182.5 ± 2.3
  1 mM   8   114.6 ± 1.4   -80.4 ± 2.3   82.9 ± 2.3   100.3 ± 2.6   173.8 ± 2.21)
  3 mM   8   113.7 ± 1.2   -79.7 ± 2.1   86.2 ± 2.01)   110.9 ± 2.31)   161.7 ± 2.42)
  Washout   8   110.7 ± 1.0   -80.0 ± 0.6   79.4 ± 2.2   96.8 ± 2.4   172.3 ± 2.2
Values are represented as mean ± S.E.M. 1) : P<0.05, 2) : P<0.01, with respect to control value.
Table 1: Modulation of the action potential configurations by quercetin in guinea pig ventricular cardiomyocytes.