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Herbal Munziq Ameliorates Myocardial Ischemia-Reperfusion Injury by Inhibiting Inflammation
Published on: January 10, 2025
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Inhibiting H2AX Can Ameliorate Myocardial Ischemia/Reperfusion Injury by Regulating P53/JNK Signaling Pathway
Ziyang Yu1, Yirong Teng2, Hongbo Yang3
1Department of Cardiology The 6th Affiliated Hospital of Kunming Medical University The People's Hospital of Yuxi City, Yuxi, Yunnan, China.
Cardiology Research and Practice
|September 11, 2024
Summary
Inhibiting H2AX, a DNA repair protein, significantly improved heart function and reduced damage in myocardial ischemia-reperfusion (I/R) injury models. This suggests H2AX is a promising therapeutic target for I/R injury.
Area of Science:
- Cardiovascular Research
- Molecular Biology
- Cellular Biology
Background:
- Myocardial ischemia-reperfusion (I/R) injury is a critical issue in cardiovascular disease, often causing oxidative stress and DNA damage.
- H2AX is a key protein involved in DNA repair pathways.
- Understanding H2AX's role in I/R injury is vital for developing new treatments.
Purpose of the Study:
- To investigate the impact of H2AX on cardiomyocytes during myocardial I/R injury.
- To evaluate the therapeutic potential of inhibiting H2AX in I/R injury.
- To elucidate the molecular mechanisms underlying H2AX's role in I/R injury.
Main Methods:
- Utilized mouse and cell models of myocardial I/R.
- Assessed H2AX expression via western blotting in vivo.
- Evaluated cardiac function, infarct size, and mitochondrial damage after H2AX inhibition.
- Analyzed signaling pathway components (P53, JNK, SHP2, etc.) in cardiomyocytes.
Main Results:
- H2AX expression was significantly elevated in MI/R mice compared to sham controls.
- Inhibiting H2AX improved cardiac function, reduced infarct area, and mitigated mitochondrial damage.
- In vitro, H2AX inhibition attenuated mitochondrial damage and apoptosis by modulating P53 and JNK pathways.
Conclusions:
- H2AX plays a significant role in myocardial I/R injury.
- Inhibiting H2AX shows therapeutic potential for alleviating I/R injury.
- Targeting H2AX, potentially via the P53/JNK pathway, offers a novel strategy for treating myocardial I/R injury.
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