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Updated: Apr 26, 2026

Semi-Minimal Invasive Method to Induce Myocardial Infarction in Rats and the Assessment of Cardiac Function by an Isolated Working Heart System
Published on: June 11, 2020
Ranolazine treatment for myocardial infarction? Effects on the development of necrosis, left ventricular function and
Sharon L Hale1, Robert A Kloner
1The Heart Institute, Good Samaritan Hospital, 1225 Wilshire Blvd, Los Angeles, CA, 90017, USA, sharon.hale@netscape.com.
Abstract:
Ranolazine, an inhibitor of the late current of the cardiac action potential (late I(Na)), is a well established clinical treatment for chronic angina. The late INa in cardiac myocytes also plays an important role in the pathophysiology of acute myocardial ischemia and reperfusion, and thus is a potential therapeutic target to ameliorate consequences of myocardial infarction. In experimental animal models, ranolazine has been shown to reduce myocardial infarct size, improve left ventricular function, decrease ischemia/reperfusion-induced arrhythmias and improve outcome in heart failure. Here we focus specifically on data from in vivo animal studies of myocardial ischemia and reperfusion.
Insights
Ranolazine, a cardiac late sodium current (late INa) inhibitor, shows promise in reducing heart damage after myocardial infarction. Animal studies demonstrate its potential to improve outcomes following ischemia and reperfusion injury.
Area of Science:
- Cardiology
- Pharmacology
- Translational Medicine
Background:
- Ranolazine is a clinically approved treatment for chronic angina.
- The cardiac late sodium current (late INa) contributes to myocardial ischemia-reperfusion injury.
- Targeting late INa offers a potential therapeutic strategy for myocardial infarction.
Purpose of the Study:
- To review in vivo animal studies on ranolazine's effects in myocardial ischemia and reperfusion.
- To evaluate ranolazine's efficacy in ameliorating consequences of myocardial infarction.
Main Methods:
- Focus on data from experimental animal models of myocardial ischemia and reperfusion.
- Analysis of studies investigating ranolazine's impact on infarct size, cardiac function, and arrhythmias.
Main Results:
- Ranolazine reduced myocardial infarct size in animal models.
- Improved left ventricular function was observed post-ischemia/reperfusion.
- Ranolazine decreased ischemia/reperfusion-induced arrhythmias and improved heart failure outcomes.
Conclusions:
- Ranolazine demonstrates cardioprotective effects in preclinical models of myocardial infarction.
- Inhibition of late INa by ranolazine is a viable therapeutic approach for ischemia-reperfusion injury.
- Further investigation into ranolazine's role in acute cardiac events is warranted.
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