Elimination of lipid peroxide during hemodialysis.

Abstract

BACKGROUND/AIMS:

This study is aimed to show the antioxidative effect of hemodialysis (HD) by demonstrating the elimination of toxic lipid peroxides.

METHODS:

Blood samples were obtained from patients on regular maintenance HD before and 15, 30, 60, 120 and 240 min after the start of each HD session. Plasma cholesteryl ester hydroperoxide (CE-OOH), phosphatidylcholine hydroperoxide (PC-OOH), and eliminators of lipid peroxides (LOOH) such as apolipoprotein A-I (apoA-I) and lecithin:cholesterol acyltransferase (LCAT) were investigated. The hydroxyl radical scavenging activity was measured for the evaluation of the pro-oxidative side.

RESULTS:

CE-OOH and PC-OOH were elevated in patients with chronic kidney disease both on and not on HD, while these values were much higher in HD patients. CE-OOH quickly dropped during the first 30 min of HD, then gradually decreased until 240 min. CE-OOH concentrations were related to those of apoA-I. In contrast, PC-OOH showed an increase 30 min after the start of HD, a change which resembled that of LCAT and was the reverse of the hydroxyl radical scavenging activity.

CONCLUSION:

These results demonstrate the antioxidative action through CE-OOH elimination involving apoA-I. The pro- and antioxidative effects of HD on LOOH are not uniform but PC-OOH is mainly influenced prooxidatively.

• Authors: Mami Obara, Aki Hirayama, Michihiro Gotoh, Atsushi Ueda, Takashi Ishizu, Yoshinori Taru, Yukari Shimozawa, Kunihiro Yamagata, Sohji Nagase, Akio Koyama
• Journal: Nephron. Clinical practice (Nephron Clin Pract) Vol. 106 Issue 4 Pg. c162-8 ( 2007) ISSN: 1660-2110 [Electronic] Switzerland
• PMID: 17596725 (Publication Type: Controlled Clinical Trial, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright 2007 S. Karger AG, Basel.

Chemical References

• Lipid Peroxides

Topics

• Female
• Humans
• Kidney Failure, Chronic (blood, rehabilitation)
• Lipid Peroxides (blood, isolation & purification)
• Male
• Middle Aged
• Renal Dialysis