Expressions of Protein Oxidation Markers, Dityrosine and Advanced Oxidation Protein Products in Cisplatin-Induced Nephrotoxicity in Rats

  • KIMOTO Yumi
    United Graduate School of Veterinary Science, Yamaguchi University Course of Veterinary Laboratory Medicine, School of Veterinary Medicine, Faculty of Agriculture, Tottori University
  • SUGIYAMA Akihiko
    Course of Veterinary Laboratory Medicine, School of Veterinary Medicine, Faculty of Agriculture, Tottori University
  • NISHINOHARA Masaaki
    Course of Veterinary Laboratory Medicine, School of Veterinary Medicine, Faculty of Agriculture, Tottori University
  • ASANO Atsushi
    Course of Veterinary Biochemistry, School of Veterinary Medicine, Faculty of Agriculture, Tottori University
  • MASUDA Aino
    Japan Institute for the Control of Aging (JalCA), Nikken Seil Co., Ltd.
  • OCHI Tairin
    Japan Institute for the Control of Aging (JalCA), Nikken Seil Co., Ltd.
  • TAKEUCHI Takashi
    Course of Veterinary Laboratory Medicine, School of Veterinary Medicine, Faculty of Agriculture, Tottori University

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The purpose of this study was to evaluate whether dityrosine and advanced oxidation protein products (AOPP) reflect the severity of cisplatin-induced nephrotoxicity. Immunoexpression of dityrosine in kidneys and plasma AOPP concentration were examined up to day 4 post-cisplatin injection in rats. Cisplatin injection induced tubular injury on days 2-4 after injection and increased serum creatinine and BUN on days 3 and 4. On days 2-4, dityrosine was immunostained in the cytoplasm of damaged tubular cells, and their immunostaining intensity increased time-dependently. Plasma AOPP levels were significantly increased on days 3 and 4. These results suggest that expressions of dityrosine and AOPP were associated with the severity of renal injury and may be useful markers for the development of cisplatin-induced nephrotoxicity.<br>

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