Cardioprotective Effect of Nec-1 in Rats Subjected to MI/R: Downregulation of Autophagy-Like Cell Death.
Cardiovasc Ther 2021;
2021:9956814. [PMID:
34354763 PMCID:
PMC8292081 DOI:
10.1155/2021/9956814]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 05/20/2021] [Accepted: 06/26/2021] [Indexed: 01/08/2023] Open
Abstract
Objective
Necrostatin-1 (Nec-1), an inhibitor of necroptosis, has been reported to protect against myocardial ischemia-reperfusion (MI/R) injury. However, the contribution of the potential antinecroptotic effect of Nec-1 on its infarct limitation and cardiac function improvement effects after MI/R has not been investigated.
Methods
The present study investigated the effect of Nec-1 on myocardial infarct size, necroptosis, and cardiac functional recovery in rats subjected to myocardial ischemia-reperfusion (MI/R 30 min/12, 24, 48, and 72 h).
Results
The study showed that Nec-1 might reduce myocardial cell death and maintain myoarchitectonic integrity, consequently inhibiting the reactive fibrosis process in rats in myocardial ischemia/late reperfusion. Moreover, the administration of Nec-1 (0.6 mg/kg) at the onset of reperfusion significantly reduced the release of creatine kinase and downregulation of autophagy within 24 h after reperfusion, and there was a significantly positive correlation between them.
Conclusion
These results suggest that antinecroptosis treatment may improve the clinical outcomes of patients with ischemic heart disease.
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