Journal Article

Urinary marker for oxidative stress in kidneys in cisplatin-induced acute renal failure in rats

Hua Zhou, Akihiko Kato, Takehiko Miyaji, Hideo Yasuda, Yoshihide Fujigaki, Tatsuo Yamamoto, Katsuhiko Yonemura, Satoru Takebayashi, Hiroyuki Mineta and Akira Hishida

in Nephrology Dialysis Transplantation

Published on behalf of European Renal Association - European Dialysis and Transplant Assoc

Volume 21, issue 3, pages 616-623
Published in print March 2006 | ISSN: 0931-0509
Published online December 2005 | e-ISSN: 1460-2385 | DOI: http://dx.doi.org/10.1093/ndt/gfi314
Urinary marker for oxidative stress in kidneys in cisplatin-induced acute renal failure in rats

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Background. Establishment of non-invasive urinary biomarkers for the prediction of acute renal failure (ARF) is important. We evaluated whether urinary oxidative stress markers reflect intrarenal oxidative stress in cisplatin (CDDP)-induced ARF, and whether these markers can be used for the prediction of future ARF.

Methods. Urinary malondialdehyde (MDA) and 8-hydroxy-2′-deoxyguanosine (8-OHdG) were measured up to day 14 post-CDDP (6 mg/kg) injection in rats. MDA and 8-OHdG expressions were examined in kidneys.

Results. CDDP induced an increase in serum creatinine (Scr), blood urea nitrogen (BUN), and tubular damage at day 5, increased urinary MDA excretion and MDA expression in kidneys at day 1 (but returned to basal values by day 3), increased urinary excretion of 8-OHdG at day 5 till day 14 (though the number of 8-OHdG-positive tubular cells increased at day 5 and then gradually decreased). Urinary MDA levels at day 1 correlated significantly with Scr (ρ = 0.721, P<0.01) and tubular damage score (ρ = 0.840, P<0.01) at day 5.

Conclusion. Our findings demonstrated divergent changes of urinary oxidative stress markers in CDDP-induced ARF, and suggested that urinary MDA may be a useful marker for the prediction of the development of CDDP-induced ARF.

Keywords: acute renal failure; cisplatin; malondialdehyde; 8-OHdG; urinary oxidative stress biomarker

Journal Article.  4816 words.  Illustrated.

Subjects: Nephrology

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