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- W2019922945 abstract "Rationale: Coronary artery ligation to induce myocardial infarction (MI) in mice is typically performed by an invasive and time-consuming approach that requires ventilation and chest opening (classic method), often resulting in extensive tissue damage and high mortality. We developed a novel and rapid surgical method to induce MI that does not require ventilation. Objective: The purpose of this study was to develop and comprehensively describe this method and directly compare it to the classic method. Methods and Results: Male C57/B6 mice were grouped into 4 groups: new method MI (MI-N) or sham (S-N) and classic method MI (MI-C) or sham (S-C). In the new method, heart was manually exposed without intubation through a small incision and MI was induced. In the classic method, MI was induced through a ventilated thoracotomy. Similar groups were used in an ischemia/reperfusion injury model. This novel MI procedure is rapid, with an average procedure time of 1.22±0.05 minutes, whereas the classic method requires 23.2±0.6 minutes per procedure. Surgical mortality was 3% in MI-N and 15.9% in MI-C. The rate of arrhythmia was significantly lower in MI-N. The postsurgical levels of tumor necrosis factor-α and myeloperoxidase were lower in new method, indicating less inflammation. Overall, 28-day post-MI survival rate was 68% with MI-N and 48% with MI-C. Importantly, there was no difference in infarct size or post-MI cardiac function between the methods. Conclusions: This new rapid method of MI in mice represents a more efficient and less damaging model of myocardial ischemic injury compared with the classic method." @default.
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- W2019922945 date "2010-12-10" @default.
- W2019922945 modified "2023-10-11" @default.
- W2019922945 title "A Novel and Efficient Model of Coronary Artery Ligation and Myocardial Infarction in the Mouse" @default.
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- W2019922945 doi "https://doi.org/10.1161/circresaha.110.223925" @default.
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