Table 1.

Action potential results

(ms)	300	500	800	1000	2000
RMP (-mV)
Control	79.2 ± 3.7	80.3 ± 3.3	80.3 ± 3.2	79.3 ± 3.2	79.4 ± 3.1
Ab-β (n = 7)	80.8 ± 3.9	81.1 ± 3.7	80.7 ± 3.6	80.2 ± 3.3	79.1 ± 3.1
Phase 0 amplitude (mV)
Control	121.6 ± 1.5	122.5 ± 1.6	123.6 ± 1.3	124.0 ± 1.4	124.8 ± 1.5
Ab-β	120.1 ± 3.5	122.3 ± 2.7	123.0 ± 2.5	123.0 ± 2.6	123.2 ± 2.9
APD90 (ms)
Control	148.8 ± 3.8*	166.1 ± 4.2	176.0 ± 3.5	179.4 ± 2.5*	178.7 ± 3.9
Ab-β	135.1 ± 3.1*	162.6 ± 4.7	167.9 ± 2.8	170.3 ± 2.2*	173.5 ± 1.6
APD30 (ms)
Control	64.2 ± 4.9	76.2 ± 4.9	82.1 ± 3.4	89.1 ± 3.1	92.7 ± 3.1
Ab-β	56.9 ± 4.2	71.5 ± 3.5	82.5 ± 1.9	84.1 ± 3.2	90.6 ± 2.3
RMP (-mV)
Control	86.3 ± 2.9	86.1 ± 3.0	86.1 ± 3.2	85.1 ± 3.2	83.4 ± 3.1
Ab- (n = 8)	85.3 ± 2.7	84.9 ± 2.8	85.0 ± 3.0	84.5 ± 2.8	85.2 ± 2.9
Phase 0 amplitude (mV)
Control	121.1 ± 1.8	122.3 ± 1.7	123.4 ± 1.6	123.2 ± 1.7	124.6 ± 1.9
Ab-	121.3 ± 2.6	123.5 ± 2.5	124.7 ± 2.5	125.3 ± 2.6	126.5 ± 2.2
APD90 (ms)
Control	136.7 ± 6.7	153.6 ± 6.8	162.3 ± 6.8	167.5 ± 7.8	166.1 ± 7.2
Ab-	133.5 ± 7.2	152.0 ± 7.5	159.6 ± 8.3	162.8 ± 8.3	160.2 ± 8.0
APD30 (ms)
Control	63.9 ± 2.6	72.8 ± 3.6	85.7 ± 3.2	90.7 ± 3.9	92.9 ± 3.7
Ab-	58.3 ± 3.9	70.7 ± 4.6	79.7 ± 3.7	85.5 ± 3.4	90.1 ± 3.2

BCL, basic cycle lengths; RMP, resting membrane potential; APD90, action potential duration at 90% repolarization; APD30, action potential duration at 30% repolarization;

^*P < 0.05, control vs. Ab-β. All values are expressed as mean ± SEM.