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The current study tested the hypothesis that ischemia-reperfusion (I-R) can cause more severe myocardial dysfunction and oxidative damage in senescent rats than young adult rats. Male Fischer 344 rats at the age of 6 (adult) and 24 (old) months were subjected to an open-chest heart surgery and randomly assigned to one of the following treatments: ischemia only (I), with the occlusion of the main descending...
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