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Abstract
Several lines of evidence indicating a close relationship among ischemia, concentration of high-energy metabolites and onset of the “oxygen paradox” in reperfused tissues have been published. In this framework, we have recently studied the effects of exogenous fructose-1,6-bisphosphate on energy metabolism and on oxygen free radical damages of isolated rat heart subjected to anoxia and reoxygenation. In comparison with control groups, hearts perfused in the presence of 5mM fructose-1,6-bisphosphate throughout the different perfusion conditions showed higher concentrations of energy metabolites at the end of anoxia, most of which were normalized after reperfusion. Furthermore, in comparison with control hearts, a reduction of tissue malondialdehyde and of lactate dehydrogenase release in the perfusate was observed in fructose-1,6-bisphosphate-perfused hearts. In this article we review most of the available data concerning the ability of fructose-1,6-bisphosphate to protect from ischemia and reperfusion damage outlining those recent findings which contributed both to clarify the pharmacological profile of the drug and to give an insight in its probable mechanism of action.