We demonstrate that EPO, administered at the point of reperfusion, reduced infarct size in an isolated perfused rat heart, in an ERK and PI3K dependent manner; in addition the mechanism was also confirmed in a whole animal model of ischaemia-reperfusion. These results suggest that EPO may be able to directly protect the myocardium against lethal reperfusion-induced injury and so offer the myocardium an additional clinical advantage over and above its ability to improve the oxygen carrying capacity of the blood.
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