Figure 1. Ultrasound electrocardiogram examination results of mice in each group. (A) Left ventricular echocardiography of mice; (B) Statistical results of LVEF, LVFS, E/A ratios of left ventricle in mice, data was presented as X±S. Comparisons between sham group and model group, **p<0.01; Comparisons between sham group and PHPS1 group, **p<0.01; Comparisons between model group and PHPS1 group, **p<0.01.