flavin-mononucleotide and Myocardial-Ischemia

Topics: Assisted Circulation; Cognition; Cognition Disorders; Drug Combinations; Female; Flavin Mononucleotide; Heart Valve Diseases; Humans; Inosine Diphosphate; Male; Middle Aged; Myocardial Ischemia; Niacinamide; Postoperative Complications; Succinates; Treatment Outcome

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.

Topics: Adenosine Triphosphate; Animals; Flavin Mononucleotide; Flavin-Adenine Dinucleotide; Flavins; Hydrogen-Ion Concentration; Male; Myocardial Ischemia; Myocardial Reperfusion Injury; Myocardium; Phosphocreatine; Rats; Rats, Wistar; Riboflavin

Topics: Adenosine Triphosphate; Coronary Disease; Drug Therapy; Electrocardiography; Flavin Mononucleotide; Myocardial Ischemia; NAD; Niacin; Niacinamide; Theophylline; Thiamine Pyrophosphate; Vasodilator Agents