The beneficial effect of 2 '-deoxycoformycin in renal ischemia-reperfusionis mediated both by preservation of tissue ATP and inhibition of lipid peroxidation

Renal ischemia injures the renal tubular cell by disrupting the vital cellu lar metabolic machinery. Further cell damage is caused when the blood flow is restored by oxygen free radicals that are generated from xanthine oxidas e. Oxygen radicals cause lipid peroxidation of cell and organelle membranes , disrupting the structural integrity and capacity for cell transport and e nergy metabolism. In the present study, the possible therapeutic usefulness of the adenosine deaminase inhibitor, 2'-deoxycoformycin (DCF), during ren al ischemia and reperfusion injury was investigated. The effects of DCF on renal malondialdehyde (MDA) and ATP levels were studied after 45 min ischem ia and 15 min subsequent reperfusion in rat kidneys. MDA levels remained un changed during ischemia, but increased after the subsequent reperfusion. D CF pretreatment (2.0 mg/kg i.m.) decreased MDA and increased ATP levels dur ing the ischemia-reperfusion period. DCF exerts a dual protective action by facilitating purine salvage for ATP synthesis and inhibiting oxygen radica l-induced lipid peroxidation. These results suggest that DCF therapy could be beneficial in the treatment of ischemia-reperfusion renal injuries.