Oxidative stress results from an imbalance between the production of free radicals and antioxidant activity. There is wide agreement that patients undergoing regular dialysis treatment experience increased oxidative stress. The aim of this study was to investigate serum total antioxidant status (TAS), total oxidant status (TOS), ischemia-modified albumin (IMA), and coenzyme Q10 (CoQ10) levels in hemodialysis (HD) and continuous ambulatory peritoneal dialysis (CAPD) patients, compared with controls.
Methods
This study was performed on 41 (21 men, 20 women) CAPD patients, 38 (20 men,18 women) HD patients, and 43 (23 men, 20 women) healthy control subjects. CoQ10 levels were standardized using blood lipids.
Results
Serum TAS levels and CoQ10/total cholesterol values of the HD and CAPD patients were significantly lower, whereas serum IMA and TOS levels were significantly higher, than those of controls. Furthermore, CoQ10/LDL, CoQ10/triglycerides, and CoQ10/total cholesterol + triglycerides values of the CAPD patients were significantly lower than those of controls. No differences were found between serum IMA, TAS, TOS, CoQ10 levels, and adjusted CoQ10 values of the CAPD and HD patients.
Conclusions
Our results suggest that oxidative stress is increased in HD and CAPD patients compared with controls, as proven by decreased TAS and adjusted CoQ10 levels and increased TOS and IMA levels. Therefore, an antioxidant supplementation to these patients may be suggested.
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