Plasma and erythrocyte phospholipid fatty acids composition in serbian hemodialyzed patients

Dyslipidemia is one of the possible risk factors for advanced atherosclerosis in patients with chronic renal failure. Abnormal phospholipid metabolism may play an important role in the progression of atherosclerosis in patients with renal failure. The aim of this study was to determine specific characteristics of plasma and erythrocyte phospholipid content and fatty acid composition in 37 patients with chronic renal failure on hemodialysis (HD). The results were compared with the characteristics of healthy subjects. Briefly, plasma triglyceride (p lt 0.001), total cholesterol (p lt 0.05), and total phospholipids (p lt 0.01) levels were significantly higher and HDL-cholesterol level significantly lower (p lt 0.01) in HD patients. Plasma phosphatidylcholine and phosphatidylethanolamine concentration were significantly higher (p lt 0.001) in HD patients. The plasma phospholipid fatty acids composition indicated significantly (p lt 0.01) higher level of oleic (18:1 n-9) and lower levels of eicopentaenoic (20:5 n-3 EPA) and docosahexaenoic (22:6 n-3 DHA) acids (p lt 0.05). However, in HD patients, the relative concentration of plasma phospholipid n-6 polyunsaturated fatty acid (PUFA) was significantly lower (p lt 0.05). The fatty acid composition of erythrocyte phospholipid in HD patients was modified with EPA and DHA levels significantly lowered (p lt 0.05). Our results demonstrate an abnormal phospholipid metabolism and deficiency of n-3 PUFA in plasma and erythrocyte phospholipids in hemodialyzed patients

Effect of n-3 fatty acids on nutritional status and inflammatory markers in haemodialysis patients

Aims: Nutrition as an aetiological factor participates a great deal in premature atherosclerosis in haemodialysis (HD) patients. The basic mechanisms of end-stage renal disease and premature atherosclerosis are connected with changes in cell functions at the membrane level. We investigated the red cell membrane fatty acids and the effects of fish oil supplements on nutritional status and inflammatory markers in HD patients. Methods: We examined 42 HD patients (mean age 55 +/- 8 years). The control group consisted of 16 healthy subjects of similar age and sex to the tested group. HD patients were administered supplements with 2.4 g of n-3 polyunsaturated fatty acids per day for 2 months. Before and after supplementation, we examined plasma lipids, cell membrane erythrocyte phospholipids content, serum albumin, haemoglobin, interleukin-6 (IL-6) and tumour necrosis factor alpha (TNF-alpha). Results: Baseline values in the tested group confirmed the presence of essential fatty acids deficiency. A statistically significant negative correlation between TNF-alpha and eicosapentaenoic acid (EPA) (r=-0.497; P lt 0.05) and IL-6 and EPA (r=-468; P=0.03) was found in HD patients before supplementation. There was a significant increase in docosahexaenoic acids, high density lipoprotein cholesterol, plasma albumin, haemoglobin levels in HD patients after supplementation (P=0.0001). There was a significant increase in EPA (P=0.01) after treatment, and there was a significant decrease in inflammatory markers (IL-6 and TNF-alpha, P=0.0001) after supplementation in the tested group. Conclusion: A dietary regime with fish oil could be used in dialysis patients to slow down the development of atherosclerosis and improve nutritional parameters

Relation of CuZnSOD activity with renal insufficiency in hypertensive diabetic patients

Diabetes and renal insufficiency are interrelated metabolic disorders closely associated with redox homeostasis disturbances. The aim of this study was to compare the activity of copper zinc,superoxide dismutase (CuZnSOD) in the erythrocytes of hypertensive diabetic patients with or without renal insufficiency with normal healthy control subjects. In both groups of diabetic patients, blood glucose level and the content of glycosylated hemoglobin (HbA(lc)) were higher than in the control group. However, CuZnSOD activity was significantly higher than control only in hypertensive diabetic patients with renal insufficiency. Our results suggest that disturbances in superoxide homeostasis do correlate with long-term complication in diabetes, i.e. diabetic renal insufficiency and hypertension.Ministry of Education and Science of the Republic of Serbia [173055

Relation of CuZnSOD activity with renal insufficiency in hypertensive diabetic patients

Diabetes and renal insufficiency are interrelated metabolic disorders closely associated with redox homeostasis disturbances. The aim of this study was to compare the activity of copper zinc,superoxide dismutase (CuZnSOD) in the erythrocytes of hypertensive diabetic patients with or without renal insufficiency with normal healthy control subjects. In both groups of diabetic patients, blood glucose level and the content of glycosylated hemoglobin (HbA(lc)) were higher than in the control group. However, CuZnSOD activity was significantly higher than control only in hypertensive diabetic patients with renal insufficiency. Our results suggest that disturbances in superoxide homeostasis do correlate with long-term complication in diabetes, i.e. diabetic renal insufficiency and hypertension.Ministry of Education and Science of the Republic of Serbia [173055