IL33 and congestive heart failure: Compared with the CHF group, IL-33 and ST2 mRNA expression decreased in the miR-487b mimic and si IL-33 groups, whereas miR-487b expression in the miR-487b mimic group was higher than that in the CHF group (P < 0.05 for all), and IL-33 and ST2 mRNA expression increased, whereas miR-487b expression decreased in the miR-487b inhibitor group (P < 0.05 for all) (Figure 7).