TIMP2 and myocardial infarction: In addition, TIMP metallopeptidase inhibitor 2 (TIMP2)‐modified exosomes from hUCMSCs enhanced the repair of MI in rats through the AKT/secreted frizzled‐related protein 2 (SFRP2) pathway, alleviating MI‐induced oxidative stress and extracellular matrix remodeling.166