MAPRE1 and cardiac arrhythmia: Figure 2C shows typical reperfusion arrhythmia graphs, primarily ventricular premature beats, with atrioventricular conduction block, ventricular tachycardia, and ventricular fibrillation (Fig. 2D). In our study, the frequency and duration of reperfusion arrhythmia were reduced after EB1 overexpression (Figs. 2E and 2F).