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  • Title: Protective effects of riboflavin and its derivatives against ischemic reperfused damage of rat heart.
    Author: Kotegawa M, Sugiyama M, Haramaki N.
    Journal: Biochem Mol Biol Int; 1994 Oct; 34(4):685-91. PubMed ID: 7866293.
    Abstract:
    The effects of riboflavin and its derivatives such as FAD, FMN and lumichrome on the levels of high energy phosphate compounds (ATP and creatine phosphate) and intracellular pH in ischemic reperfused rat hearts were investigated using a Langendorff perfusion technique. 31P-NMR study showed a decrease in the levels of high energy phosphate compounds and pH values in myocardium after 30 min global ischemia and a slight recovery of these levels after a 30 min reperfusion following ischemia. However, in all the hearts perfused with riboflavin and its derivatives during ischemia-reperfusion, a marked recovery of high energy phosphate compounds and pH values were observed. In addition, the cardiac mitochondrial respiratory function was protected from ischemia-reperfusion injury. These results suggest that riboflavin, FAD, FMN, and lumichrome have a protective effect against ischemia-reperfusion injury to rat myocardium in vitro. It is assumed that these substances exert their effect directly in the extracellular space.
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