Abstract
Total lipids, lipoprotein-lipids, and apolipoproteins were studied in plasma of 20 patients, aged 13.9 +/- 3.4 y (mean +/- SD; range 7.4 to 19 y), who were treated with continuous peritoneal dialysis for a period of 2.1 +/- 1.2 (range 0.5 to 4.9) y. Measurements included total plasma cholesterol and triglycerides, triglycerides in the very low density fraction, and cholesterol in the very low density, low density, and high density fractions, as well as apo A-I and apo B. The results were compared with values in 17 healthy control subjects, aged 13.0 +/- 5.1 (range 5.1 to 19) y. The patients had significantly elevated levels of total plasma triglycerides, triglycerides in the very low density fraction, total plasma cholesterol, cholesterol in the very low density fraction, and cholesterol in the low density fraction, whereas levels of cholesterol in the high density fraction were normal. Plasma apo B levels were elevated, but apo A-I levels were not different from controls. In addition, the nutritional status of the patients was assessed and apo A-I and apo B concentrations were measured in the dialysate of 10 patients. The losses of apo A-I and apo B in dialysate averaged 13.4 +/- 7.4 and 2.1 +/- 3.1 mg/kg/d, respectively. Lipoprotein profiles were not correlated with nutritional status. We conclude that pediatric patients treated with continuous peritoneal dialysis have atherogenic lipoprotein profiles, cholesterol ratios, and apolipoprotein ratios, but normal cholesterol in the high density fraction and apo A-I levels despite considerable apo A-I losses in the dialysate.
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