The influence of N-[imino(1-piperidinyl)methyl]guanidine and N-[imino(4-morpholinyl)methyl]guanidine on citrate content, activities of aconitase and citrate synthase in rats exposed to cerebral ischemia-reperfusion

摘要

The effect of guanidine derivatives on citrate content and activity of aconitate hydratase and citrate synthase have been investigated in rats with cerebral ischemia-reperfusion. Administration of N-[imino(1-piperidinyl)methyl] guanidine and N-[imino(4-morpholinyl)methyl]guanidine resulted in changes of specific activities of aconitase and citrate synthase towards control values. Under these conditions the citrate level considerably decreased versus rats with untreated ishemia-reperfusion. Administration of these biguanidines compounds also decreased the degree of DNA fragmentation, which was markedly increased in rats with ischemia-reperfusion. The dose-dependent effects of guanidine derivatives suggest that they exhibit not only antioxidant but also prooxidant effects.