NPPB and myocardial infarction: Left ventricular mRNA expression of typical markers of cardiac hypertrophy such as α-smooth muscle actin (α-SMA), atrial natriuretic and B-type natriuretic peptides (ANP and BNP) tended to be higher after MI (statistically significant only for BNP), but again no difference between WT and VDR mutant mice.