IL33 and congestive heart failure: Expression in each group increased compared with expression in the blank and sham groups (P < 0.05 for all), and expression in the si IL-33 and miR-487b mimic groups were lower than in the CHF group but higher than in the blank and sham groups (P < 0.05 for all), and expression in the miR-487b inhibitor group increased compared with the CHF group (P < 0.05 for both).