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Do high-flux dialysis membranes affect renal dyslipidemia?
P Ottosson1, P O Attman, C Knight
1Department of Nephrology, Sahlgrenska University Hospital, University of Göteborg, Sweden.
Abstract:
High-flux hemodialysis has been reported to attenuate renal dyslipidemia. To evaluate the contribution of dialysis membrane composition per se, we compared the impact on the lipoprotein profile of hemodialysis (HD) with a conventional cellulose dialysis membrane with that of a synthetic high-flux dialysis membrane in standard hemodialysis mode. Forty-two patients (24 men, 18 women; mean age, 69 years; range, 39-85 years) on maintenance HD with cellulosic dialysis membranes were randomized and stratified for diabetes mellitus to 12 weeks of HD treatment with either a cellulose acetate (CA; n = 23) or polyacrylonitrile (AN69; n = 19) membrane. HD was performed in a conventional low-flux standard HD mode 4-6 hours/session. Plasma levels of lipids (TC, TG), apolipoproteins (A-I, B, C-III, E), lipoprotein (a) (Ip(a)), and individual apoA and apoB containing lipoproteins (LP-A-I, LP-A-I:A-II, LP-B, LP-Bc) were determined. At baseline, the AN69 group had slightly higher plasma concentrations of apoC-III and C-III/HS, but there were no other differences at entry in study variables between the treatment groups. Twelve week treatment with an AN69 membrane did not result in any significant changes in lipoprotein profile compared with treatment with a cellulose acetate membrane. HD with AN69 dialysis membranes in the conventional low-flux standard hemodialysis mode does not affect the lipoprotein profile.
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