Cited by 13Cardiac Ischemia and ReperfusionCardiac Fibrosis and RemodelingCell death mechanisms and regulation

Bufalin Ameliorates Myocardial Ischemia/Reperfusion Injury by Suppressing Macrophage Pyroptosis via P62 Pathway

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Li, Chang, Ma, Zhen, Wei, Xiang, Wang, Ying, Wu, Jian, Li, Xuan, Sun, Xiaolei, Ding, Zhiwen +2 more·2025·Journal of Cardiovascular Translational Research

Abstract

Bufalin, which is isolated from toad venom, exerts positive effects on hearts under pathological circumstance. We aimed to investigate the effects and mechanisms of bufalin on myocardial I/R injury. In vivo, bufalin ameliorated myocardial I/R injury, which characteristics with better ejection function, decreased infarct size and less apoptosis. The levels of pyroptotic proteins were increased in I/R-treated macrophages and inflammatory cytokines expressed more in I/R-induced mouse, which could be attenuated by bufalin. Bufalin also reduced H/R-treated macrophage pyroptosis in vitro. Autophagic flux blockage and ROS accumulation were reduced by bufalin in impaired macrophages. Overexpression of p62 abrogated the anti-proptosis and anti-oxidative effects of bufalin. The levels of apoptosis related proteins were changed and TUNEL-positive ratio was raised in cardiomyocytes that received conditioned medium treatment with H/R-treated macrophages, while bufalin pretreatment could reduce apoptosis. These findings indicate that bufalin may attenuate myocardial I/R injury by suppressing macrophage pyroptosis via P62 pathway.

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Authors
Li, C., Ma, Z., Wei, X., Wang, Y., Wu, J., Li, X., Sun, X., Ding, Z., Yang, C., & Zou, Y.
Affiliations
  • Shanghai Medical College of Fudan University (CN)
  • Fudan University (CN)
Corresponding author
  • Ding, Zhiwen
  • Yang, Cheng
  • Zou, Yunzeng
Venue
Journal of Cardiovascular Translational Research
Published
2024-12-28
Volume
18
Issue
2
Pages
221-236
ISSN
  • 1937-5387 (ISSN-L)
  • 1937-5395
OpenAlex
W4405861773
Cited by
13
References
72
Citations by year
2026: 7 · 2025: 6
FWCI
3.95
Type
journal article
Language
en
Open access
Locations
  • Journal of Cardiovascular Translational Research (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
National Natural Science Foundation of China (82230009, 82430016, 81900245)
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Fibrosis and Remodeling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
Keywords
bufalin, myocardial ischemia-reperfusion injury, macrophage pyroptosis, autophagy, reactive oxygen species, cardiomyocyte apoptosis, inflammatory cytokines, toad venom, cardioprotection
MeSH terms
RAW 264.7 Cells, Pyroptosis, Sequestosome-1 Protein, Animals, Anti-Inflammatory Agents, Bufanolides, Disease Models, Animal, Macrophages, Male, Mice, Inbred C57BL, Myocardial Infarction, Signal Transduction, Myocardial Reperfusion Injury, Cytokines, Inflammation Mediators, Myocytes, Cardiac, Mice

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