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Objectives: This study examined the effects of nitrate tolerance (NT) on myocardial ischemia reperfusion (MI/R) injury and elucidated the potential mechanisms involved. Furthermore, the effects of GSH on postischemic myocardial apoptosis in NT rats were investigated. Methods and results: Male Sprague–Dawley rats were randomized to receive nitroglycerin (60 μg/kg/h) or saline for 12 h followed by...
Objective: To study the effects of glucose-insulin-potassium (GIK) cocktail on cardiac myocyte apoptosis and cardiac functional recovery following myocardial ischemia/reperfusion (MI/R), and to further determine the role of insulin in the GIK-induced cardioprotective effect in vivo. Methods: Forty eight male rabbits were subjected to 40 min MI followed by R for 3 h and were randomly received one...
Objective: Significant myocardial apoptosis occurs in ischemia/reperfused hearts. However, the contribution of apoptosis to the development of myocardial injury remains controversial. The present study attempted to obtain evidence that inhibition of apoptosis at early reperfusion can reduce myocardial infarction after prolonged reperfusion. Methods: Adult male rats were subjected to 30 min...
Though reactive oxygen species (ROS) has been noticed to be involved in arsenic trioxide (As2O3)-induced apoptosis of tumor cells, its role in apoptosis signaling remained to be elucidated. The objective of this work was to explore the association of the inherent cellular ROS level with the susceptibility of the tumor cells to apoptosis induction by As2O3. Low concentration of As2O3 was administered...
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