title: Plasma lipids are not oxidized during hemodialysis.
abstract: Lipid peroxidation products, both lipid hydroperoxides and thiobarbituric acid reactive substances (TBARS) were determined in the plasma of 31 uremic patients treated with maintenance hemodialysis. Whereas patients had significantly elevated TBARS compared to 93 healthy controls (4.25 +/- 1.53 vs. 1.66 +/- 0.50 mumol/l; p < 0.01) lipid hydroperoxides were not detected in the plasma of patients before dialysis. After hemodialysis, a slight increase in TBARS was observed (4.50 +/- 1.97 mumol/l, p > 0.01). However, when the TBARS were corrected for hemoconcentration by relating TBARS to the plasma cholesterol concentrations a statistically significant decrease of TBARS was observed (1.02 +/- 0.63 mumol TBARS/mmol cholesterol vs. 0.84 +/- 0.60 mumol TBARS/mmol cholesterol; p < 0.01) after 240 min of hemodialysis. There was no evidence for the formation of plasma lipid hydroperoxides in the extracorporeal circulation. It is therefore suggested that elevated TBARS in chronic renal failure are not caused by the dialysis therapy.
authors.affiliation: Department of Clinical Chemistry, University Hospital, Georg-August-Universität, Göttingen, FRG.
authors.forename: V
authors.initials: V
authors.lastname: Schettler
authors.forename: E
authors.initials: E
authors.lastname: Wieland
authors.forename: R
authors.initials: R
authors.lastname: Verwiebe
authors.forename: P
authors.initials: P
authors.lastname: Schuff-Werner
authors.forename: F
authors.initials: F
authors.lastname: Scheler
authors.forename: M
authors.initials: M
authors.lastname: Oellerich
mesh_terms: D000328:Adult; D000368:Aged; D001806:Blood Urea Nitrogen; D003404:Creatinine / Q000097:blood; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000097:blood / Q000628:therapy; D015227:Lipid Peroxidation; D008054:Lipid Peroxides / Q000097:blood; D008055:Lipids / Q000097:blood*; D008297:Male; D008875:Middle Aged; D010084:Oxidation-Reduction; D017382:Reactive Oxygen Species / Q000378:metabolism; D006435:Renal Dialysis / Q000009:adverse effects; D017392:Thiobarbituric Acid Reactive Substances / Q000378:metabolism
chemical_list: D008054:Lipid Peroxides; D008055:Lipids; D017382:Reactive Oxygen Species; D017392:Thiobarbituric Acid Reactive Substances; D003404:Creatinine