Whole-Body Hyperthermia Provides Biphasic Cardioprotection Against Ischemia/Reperfusion Injury in the Rat

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Abstract

Background

Hyperthermia increases cardiac tolerance to ischemia/reperfusion injury 24 hours after the heat stress. Free radicals and redox mechanisms have been implicated in such tolerance. However, the time course and its relation to the induction of antioxidative enzymes in the protection induced by whole-body hyperthermia against ischemia/reperfusion injury are unknown.

Conclusions

The activation of Mn-SOD mediated by free radical production during hyperthermia is important in the acquisition of early-phase and late-phase cardioprotection against ischemia/reperfusion injury in rats. (Circulation. 1998;98:1414-1421.)

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