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Clinical Trial |
Department of Medicine, University Medical Centre of Nijmegen, The Netherlands. S.Bredie@aig.azn.nl
OBJECTIVE: To examine whether a reduced daily glucose load by overnight application of the less-absorbed glucose polymer icodextrin would have favorable effects on lipid profiles of continuous ambulatory peritoneal dialysis (CAPD) patients. STUDY DESIGN: Randomized crossover study with two subsequent periods of 6 weeks. SETTING: Home PD unit of a secondary-care hospital. PATIENTS: Twenty-one nondiabetic CAPD patients (15 male, 6 female; mean age 50.3+/-11.8 years). INTERVENTION: Participants were randomly assigned to receive an overnight dwell with either standard glucose solution or with a 7.5% icodextrin-containing solution. MAIN OUTCOME MEASURES: Relation between reduction in the total amount of intraperitoneal infused glucose and parameters of glucose (plasma glucose, insulin, and HbA1C) and lipid metabolism [free fatty acids, plasma lipids, lipoproteins, and low density lipoprotein (LDL) subfraction profile]. RESULTS: After the icodextrin dwells, a reduction of plasma total cholesterol (from 5.43+/-0.85 to 4.86+/-0.70 mmol/L, p < 0.001) and LDL cholesterol (from 3.38+/-0.87 to 2.93+/-0.73 mmol/L, p = 0.001) was observed. Also, high density lipoprotein (HDL) cholesterol (from 0.95+/-0.27 to 0.90+/-0.24 mmol/L, p = 0.029) was reduced, but the plasma total cholesterol-to-HDL ratio remained similar. Plasma free fatty acids and triglyceride levels tended to decrease (from 0.16+/-0.10 to 0.13+/-0.08 mmol/L, p= 0.06, and from 2.14+/-1.96 to 1.92+/-1.03 mmol/L, respectively). Evaluation of LDL subfraction profiles after ultracentrifugation showed a more buoyant LDL subfraction profile with fewer dense LDL particles in 6 patients and no changes in 14 patients after icodextrin.The effects on lipids were not accompanied by a decrease in fasting plasma glucose (from 5.76+/-1.29 to 5.86+/-0.80 mmol/L) or insulin levels (from 19.5+/-14.4 to 20.3+/-13.0 mU/L). CONCLUSION: These results suggest a beneficial effect on lipid profiles of CAPD patients with the use of an overnight dwell with icodextrin.
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