NLRP3 and myocardial infarction: In this study, we assessed (a) whether there were differential age‐related responses of NLRP3 inflammasomes to MI, (b) whether there were different responses between young and ageing infarcted hosts in hADSC administration, and (c) whether pre‐treatment with BP in ageing hosts can improve the age‐related fibrosis by regulating NLRP3 inflammasomes in a rat MI model.