title: Vitamin E-bonded hemodialyzer improves neutrophil function and oxidative stress in patients with end-stage renal failure.
abstract: We evaluated the biocompatibility of a newly developed vitamin E hemodialyzer (CL-EE; Terumo Co Ltd, Tokyo, Japan) by neutrophil function and oxidant stress in patients with end-stage renal failure in a randomized crossover study. Ten patients underwent hemodialysis using either the CL-EE or a control dialyzer membrane identical to the CL-EE except for vitamin E binding for 12 weeks in a crossover fashion after a 1-month washout period with hemophane membranes. White blood cell counts, serum oxidized low-density lipoprotein (Ox-LDL) levels, and malondialdehyde (MDA) levels during hemodialysis sessions were measured at the initiation and end of the CL-EE and control trials. Superoxide anion production by neutrophils just before and 4 hours after starting the session also was measured. Leukocytopenia at 1 hour after starting the session was detected to a similar extent in both membranes. However, the degree of reduction was less in the CL-EE trial after repeated use. Superoxide anion production by neutrophils just before a hemodialysis session was reduced after repeated use of the CL-EE membrane. Serum Ox-LDL levels increased, whereas serum MDA levels decreased during sessions to a similar extent in both trials. However, these parameters were significantly lower in the CL-EE trial after repeated use. Serum LDL concentrations significantly decreased with repeated use of the CL-EE membrane. These data suggest that repeated use of the CL-EE membrane for 3 months improves neutrophil function, oxidant stress, and LDL concentrations in patients with renal failure. This membrane may be useful to reduce the incidence of cardiovascular events in patients with renal failure.
authors.affiliation: Department of Clinical Pharmacology, Jichi Medical School, Kawachi, Tochigi, Japan. tsuru@jichi.ac.jp
authors.forename: Shuichi
authors.initials: S
authors.lastname: Tsuruoka
authors.forename: Atsuhiro
authors.initials: A
authors.lastname: Kawaguchi
authors.forename: Kenta
authors.initials: K
authors.lastname: Nishiki
authors.forename: Tokie
authors.initials: T
authors.lastname: Hayasaka
authors.forename: Chie
authors.initials: C
authors.lastname: Fukushima
authors.forename: Kohichi
authors.initials: K
authors.lastname: Sugimoto
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Saito
authors.forename: Akio
authors.initials: A
authors.lastname: Fujimura
mesh_terms: D002784:Cholesterol / Q000097:blood; D018592:Cross-Over Studies; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood* / Q000628:therapy; D007958:Leukocyte Count; D008074:Lipoproteins / Q000097:blood / Q000187:drug effects; D008077:Lipoproteins, LDL / Q000097:blood / Q000187:drug effects; D008297:Male; D008315:Malondialdehyde / Q000097:blood; D008875:Middle Aged; D009504:Neutrophils / Q000187:drug effects* / Q000378:metabolism; D018384:Oxidative Stress / Q000187:drug effects*; D006435:Renal Dialysis / Q000295:instrumentation; D013481:Superoxides / Q000097:blood; D016896:Treatment Outcome; D014810:Vitamin E / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D008074:Lipoproteins; D008077:Lipoproteins, LDL; C099252:oxidized low density lipoprotein; D013481:Superoxides; D014810:Vitamin E; D008315:Malondialdehyde; D002784:Cholesterol