Upregulation of Periostin Through CREB Participates in Myocardial Infarction-induced Myocardial Fibrosis

This study aims to verify the hypothesis that CREB promotes the expression of periostin in MI-induced myocardial fibrosis. To test this hypothesis, primary rat cardiac fibroblasts were cultured and rat model of MI was established. The level of myocardial fibrosis post-MI was identified by histological staining. The expressions of CREB and periostin were detected through western blot and reverse transcription quantity polymerase chain reaction. The upregulation and downregulation of CREB and periostin were established by plasmid, small interfere RNA (siRNA), and lentivirus, respectively. High levels of CREB and periostin were found post-MI in our study. Meanwhile, the expression of periostin was decreased after CREB downregulation both in vivo and in vitro. Finally, with the treatment of pAV-CREB and si-periostin, the expressions of collagen Ⅰ and Ⅲ were attenuated. The expression of periostin was elevated post-MI and participated in MI-induced myocardial fibrosis, which was regulated through CREB. This study provides a novel idea and potential intervention target for MI-induced myocardial fibrosis.
Source: Journal of Cardiovascular Pharmacology - Category: Cardiology Tags: Original Article Source Type: research