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  • Title: Cell cholesterol transport to plasma in blood from patients with renal failure or a kidney transplant.
    Author: Sutherland WH, Corboy J, Walker RJ, Robertson MC, Ball MJ.
    Journal: Nephrol Dial Transplant; 1995; 10(3):358-65. PubMed ID: 7792031.
    Abstract:
    Accumulation and distribution of cell cholesterol in plasma lipoproteins of incubated blood was examined in 36 patients with chronic renal failure including 13 who were dialysis-independent, 12 on haemodialysis, and 11 on continuous ambulatory peritoneal dialysis (CAPD), 17 renal transplant recipients, and 8 healthy controls. In addition, transport of cholesterol between red blood cells and high-density lipoprotein subfraction 3 (HDL3) isolated from a subgroup of patients with chronic renal failure was determined. Significantly less cell cholesterol appeared in plasma (P < 0.002) and HDL (P = 0.03), the main recipient of cell cholesterol, in patients with chronic renal failure compared with healthy subjects. Corresponding values in blood from renal transplant recipients were similar to controls. In patients with chronic renal failure, plasma HDL3 cholesterol levels (P < 0.02), HDL3 phospholipid content (P < 0.001) and net transport of red cell cholesterol to isolated HDL3 (P < 0.001) were significantly lower compared with controls. The data suggest that in patients with chronic renal failure, low levels of plasma HDL3 of abnormal composition may restrict the incorporation of cell cholesterol into the antiatherogenic HDL fraction potentially leading to inefficient transport of cholesterol from peripheral tissues and the development of atherosclerosis. These abnormalities appear to be reversed by renal transplantation.
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