The effect of trimetazidine on renal oxidative stress in partial and complete ureteral obstructions in a rat model.

BACKGROUND/AIM Renal oxidative stress occurs in ureteral obstructions. The purpose of this study was to investigate the effect of the antioxidant and antiischemic agent trimetazidine (TMZ) on oxidative stress following ureteral obstruction. MATERIALS AND METHODS Ten groups were established. Sham groups were checked as controls after 1 and 3 weeks. The other 8 groups had partial or complete ureteral obstruction while receiving or not receiving trimetazidine (TMZ) at 5 mg/kg daily and were evaluated after either 1 week or 3 weeks. Creatinine and cystatin C measurements were performed in the serum. Malondialdehyde, myeloperoxidase, catalase, and glutathione peroxidase activity were measured in renal tissue and serum. RESULTS In the 1-week groups, tissue malondialdehyde, serum myeloperoxidase, and glutathione peroxidase activity increased significantly with obstruction and TMZ use compared to the control group (P < 0.005). In the 3-week TMZ group, cystatin C, tissue malondialdehyde, serum and tissue myeloperoxidase, and tissue glutathione peroxidase differed significantly (P < 0.05). There was no significant difference in all parameters after 3 weeks of partial obstruction (P > 0.05), with only serum malondialdehyde being significantly elevated (P < 0.05). CONCLUSION TMZ did not exhibit a renal oxidative stress-lowering effect in obstruction. It causes mild impairment of renal functions in obstruction. Patients using TMZ must be closely monitored in terms of kidney function in the event of any ureteral obstruction.