Mediators of Inflammation

Mediators of Inflammation / 2004 / Article

Open Access

Volume 13 |Article ID 896047 |

Aluet Borrego, Zullyt B. Zamora, Ricardo González, Cheyla Romay, Silvia Menéndez, Frank Hernández, Teresita Montero, Enys Rojas, "Protection by ozone preconditioning is mediated by the antioxidant system in cisplatin-induced nephrotoxicity in rats", Mediators of Inflammation, vol. 13, Article ID 896047, 7 pages, 2004.

Protection by ozone preconditioning is mediated by the antioxidant system in cisplatin-induced nephrotoxicity in rats

Received06 Oct 2003
Accepted30 Oct 2003


Background: Acute renal failure is a dose-limiting factor of cisplatin chemotherapy. Here, we show the protective effect of ozone oxidative preconditioning against cisplatin-induced renal dysfunction in rats. Ozone oxidative preconditioning is a prophylactic approach, which favors the antioxidant–pro-oxidant balance for preservation of the cell redox state by increasing antioxidant endogenous systems in various in vivo and in vitro experimental models.Aims: To analyze the protective role of ozone oxidative preconditioning against cisplatin-induced nephrotoxicity.Methods: Male Sprague–Dawley rats were pretreated with 15 intrarectal applications of ozone/oxygen mixture at 0.36, 0.72, 1.1, 1.8 and 2.5 mg/kg before cisplatin intraperitoneal injection (6 mg/kg). Serum and kidneys were extracted and analyzed 5 days after cisplatin treatment for determinations of the renal content of glutathione, thiobarbituric acid-reactive substances, renal concentration and enzymatic activities of catalase, superoxide dismutase and glutathione peroxidase.Results: Ozone pretreatment prevented the increase in serum creatinine levels, the glutathione depletion and the inhibition of superoxide dismutase, catalase and glutathione peroxidase activities induced by cisplatin in the rat kidney. Also, the renal content of thiobarbituric acid-reactive substances was decreased by ozone therapy. These protective effects of ozone were dose dependent.Conclusions: Intrarectal ozone therapy prevented effectively the renal antioxidant unbalance induced by cisplatin treatment.

Copyright © 2004 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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