1. Academic Validation
  2. Syringaresinol attenuates sepsis-induced cardiac dysfunction by inhibiting inflammation and pyroptosis in mice

Syringaresinol attenuates sepsis-induced cardiac dysfunction by inhibiting inflammation and pyroptosis in mice

  • Eur J Pharmacol. 2021 Dec 15;913:174644. doi: 10.1016/j.ejphar.2021.174644.
Ao Wei 1 Jingjing Liu 1 Dihua Li 2 Yanmin Lu 2 Lei Yang 2 Yuzhen Zhuo 3 Wencong Tian 4 Hongliang Cong 5
Affiliations

Affiliations

  • 1 Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, 300222, China.
  • 2 Tianjin Key Laboratory of Acute Abdomen Disease Associated Organ Injury and ITCWM Repair, Tianjin Nankai Hospital, Tianjin, 300100, China.
  • 3 Tianjin Key Laboratory of Acute Abdomen Disease Associated Organ Injury and ITCWM Repair, Tianjin Nankai Hospital, Tianjin, 300100, China. Electronic address: [email protected]
  • 4 The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, China. Electronic address: [email protected]
  • 5 Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, 300222, China. Electronic address: [email protected]
Abstract

The mortality of sepsis-induced cardiac dysfunction (SICD) is very high due to the complex pathophysiological mechanism. Syringaresinol (SYR) is a natural abstract which possesses anti-inflammatory property. The present study aims was to identify the protective impact of SYR on sepsis-induced cardiac dysfunction and investigate the specific mechanisms. We found that SYR improved the cardiac function and alleviated myocardial injury in mice that subjected to cecal ligation and puncture, in addition, SIRT1 expression was significantly elevated after SYR treatment compared to sepsis group both in vivo and in vitro, along with suppression of NLRP3 activation and proinflammatory cytokines release. However, SIRT1 Inhibitor EX427 abolished the impact of SYR on LPS-induced Pyroptosis in cardiomyocytes. Furthermore, molecular docking analysis predicted that there is high affinity between SYR and Estrogen Receptor (ER), ER inhibitor ICI182780, the specific ERβ Inhibitor PHTP and the specific ERαinhibitor AZD9496 were used to examine the role of ER in the protective effect of SYR against SICD, and the results suggested that ER activation was essential for the cardioprotective function of SYR. In conclusion, SYR ameliorates SICD via the ER/SIRT1/NLRP3/GSDMD pathway.

Keywords

Cardiac dysfunction; Estrogen receptor; Pyroptosis; Sepsis; Syringaresinol.

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