Abstract:
Background: The development of carbonyl stress with accumulation of reactive carbonyl compounds (RCOs) and advanced glycation end products (AGEs) in peritoneal membrane can change peritoneal membrane transport, increase morbidity and mortality of chronic ambulatory peritoneal dialysis (CAPD) patients. Many strategies aim to inhibit RCOs and AGEs synthesis. Vitamin E possesses antioxidant activity has been used safely and effectively to reduce carbonyl stress in hemodialysis patients but its efficacy in CAPD patients is unknown. Objectives: The present study was conducted to determine the efficacy of oral route vitamin E on plasma RCOs, dialysate RCOs, peritoneal transport and dialysate albumin loss in CAPD patients. Method: An experimental prospective study was performed in 16 stable CAPD patients. All patients were given oral vitamin E at the dose of 800 unit/day for 3 months. Modified peritoneal equilibration test was done and the measurement of plasma RCOs, dialysate RCOs, dialysate albumin at the time before and 1.5, 3 months after giving vitamin E, finally after stop vitamin E for 1.5 months. Outcome: The results show that oral route vitamin E exhibited a minimal side effect and no effect in peritoneal solute transport, dialysate albumin loss, net ultrafiltration volume, plasma and dialysate RCOs in CAPD patients. Conclusion: Oral route vitamin E not only no effect on peritoneal solute and water transport but also no effect in reducing carbonyl stress of CAPD patients. The lack of efficacy of oral route vitamin E in the study may be due to inadequate vitamin E dose, duration of treatment or inappropriate route