ADCYAP1 and myocardial infarction: Although there was no significant difference between the relative PACAP levels in the ischemic LV samples (MI-LV-I) and the Sham hearts, the PACAP-38 level was significantly lower in the non-ischemic left ventricular samples of MI hearts (MI-LV-NI) compared to ischemic LV samples (p = 0.04) and also to the Sham hearts (p < 0.001) (Figure 2).