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Acute Myocardial Infarction in Rats
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Acute Myocardial Infarction in Rats

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ZYZ-803 Mitigates Endoplasmic Reticulum Stress-Related Necroptosis after Acute Myocardial Infarction through

Lingling Chang1, Zhijun Wang1,2, Fenfen Ma3

  • 1Shanghai Key Laboratory of Bioactive Small Molecules, Department of Pharmacology, School of Pharmacy, Fudan University, 826 Zhangheng Road, Pudong New District, Shanghai 201203, China.

Oxidative Medicine and Cellular Longevity
|July 9, 2019
PubMed

Insights

ZYZ-803, a novel molecule, protects the heart from acute myocardial infarction (AMI) by reducing cell death (necroptosis) and endoplasmic reticulum stress (ERS). This compound offers potential for new cardioprotective therapies.

Area of Science:

  • Cardiovascular Research
  • Molecular Biology
  • Pharmacology

Background:

  • Acute myocardial infarction (AMI) is a major global health concern.
  • Cardiac necroptosis and endoplasmic reticulum stress (ERS) are key factors in AMI.
  • Existing treatments for AMI have limitations.

Purpose of the Study:

  • To investigate the cardioprotective effects of ZYZ-803 against ERS-induced necroptosis in AMI.
  • To elucidate the underlying molecular mechanisms of ZYZ-803's action.

Main Methods:

  • In vivo studies using a rat model of AMI induced by coronary artery ligation.
  • In vitro experiments using tunicamycin to induce ERS-related necroptosis.
  • Analysis of cardiac function, infarct size, and key signaling pathways (RIP3-Ca2+-CaMKII).

Main Results:

  • ZYZ-803 significantly improved cardiac function and reduced infarct size in vivo.
  • The compound effectively alleviated ERS and necroptosis in AMI hearts.
  • In vitro, ZYZ-803 inhibited ERS-induced necroptosis via the RIP3-Ca2+-CaMKII pathway.

Conclusions:

  • ZYZ-803 demonstrates significant antinecroptosis and cardioprotective potential in AMI.
  • The drug's mechanism involves modulating the RIP3-Ca2+-CaMKII signaling pathway.
  • ZYZ-803 represents a promising therapeutic candidate for acute myocardial ischemia.

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