Document Detail

Reduction of serum antioxidative capacity during hemodialysis.
MedLine Citation:
PMID:  17891349     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Hemodialysis (HD) is thought to exacerbate oxidative stress (OS). The purpose of this study was to assess patients' oxidative status during and after HD, and to clarify the relation between oxidative status and antioxidant solutes such as uric acid (UA) and ascorbic acid (AsA). METHODS: Serum diacron-reactive oxygen metabolites (d-ROM), and biological antioxidant potential (BAP), as well as serum concentrations of UA, AsA, urea nitrogen (UN), and creatinine (Cre) were measured in eight HD patients at six time points during and after HD. Inflow and outflow dialyzer blood was evaluated during HD or sham HD (no dialysate flow). Further, BAP was evaluated by adding UA or AsA to post-HD serum. RESULTS: No changes were found in d-ROM over time, whereas BAP was significantly decreased by HD. No differences were found in d-ROM during HD or sham HD, or between inflow and outflow blood. During HD, significantly lower BAP levels were found in outflow blood than in inflow blood. Serum UA and AsA levels were decreased by HD; however, no increases were observed in BAP levels after the addition of these molecules to post-HD serum. CONCLUSION: These data indicate that HD reduces serum antioxidative capacity, and the loss of dialyzable molecules may be involved. However, this reduction in capacity does not seem to be caused by the loss of UA or AsA.
Keisuke Nakayama; Hiroyuki Terawaki; Masaaki Nakayama; Masashi Iwabuchi; Toshinobu Sato; Sadayoshi Ito
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-09-28
Journal Detail:
Title:  Clinical and experimental nephrology     Volume:  11     ISSN:  1342-1751     ISO Abbreviation:  Clin. Exp. Nephrol.     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-09-24     Completed Date:  2008-01-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9709923     Medline TA:  Clin Exp Nephrol     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  218-24     Citation Subset:  IM    
Research Division of Dialysis and Chronic Kidney Disease, Tohoku University Graduate School of Medicine, 1-1 Seiryo machi aoba-ku, Sendai 980-8574, Japan.
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MeSH Terms
Aged, 80 and over
Antioxidants / metabolism*
Ascorbic Acid / blood*
Cross-Over Studies
Middle Aged
Oxidative Stress / physiology*
Renal Dialysis / adverse effects*
Uric Acid / blood*
Reg. No./Substance:
0/Antioxidants; 50-81-7/Ascorbic Acid; 69-93-2/Uric Acid

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