Biological Trace Element Research

, Volume 147, Issue 1, pp 217–225

Aldehyde and Xanthine Oxidase Activities in Tissues of Streptozotocin-Induced Diabetic Rats: Effects of Vitamin E and Selenium Supplementation

  • Tayyebeh Ghaffari
  • Mohammad Nouri
  • Amir Ata Saei
  • Mohammad-Reza Rashidi
Article

DOI: 10.1007/s12011-011-9291-7

Cite this article as:
Ghaffari, T., Nouri, M., Saei, A.A. et al. Biol Trace Elem Res (2012) 147: 217. doi:10.1007/s12011-011-9291-7
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Abstract

Effects of vitamin E and selenium supplementation on aldehyde oxidase (AO) and xanthine oxidase (XO) activities and antioxidant status in liver, kidney, and heart of streptozotocin (STZ)-induced diabetic rats were examined. AO and XO activities increased significantly after induction of diabetes in rats. Following oral vitamin E (300 mg/kg) and sodium selenite (0.5 mg/kg) intake once a day for 4 weeks, XO activity decreased significantly. AO activity decreased significantly in liver, but remained unchanged in kidney and heart of vitamin E- and selenium-treated rats compared to the diabetic rats. Total antioxidants status, paraoxonase-1 (PON1) and erythrocyte superoxide dismutase activities significantly decreased in the diabetic rats compared to the controls, while a higher fasting plasma glucose level was observed in the diabetic animals. The glutathione peroxidase activity remained statistically unchanged. Malondialdehyde and oxidized low-density lipoprotein levels were higher in the diabetic animals; however, these values were significantly reduced following vitamin E and selenium supplementation. In summary, both AO and XO activities increase in STZ-induced diabetic rats, and vitamin E and selenium supplementation can reduce these activities. The results also indicate that administration of vitamin E and selenium has hypolipidemic, hypoglycemic, and antioxidative effects. It decreases tissue damages in diabetic rats, too.

Keywords

Streptozotocin-induced diabetesVitamin ESeleniumAldehyde oxidaseXanthine oxidaseParaxonase 1

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Tayyebeh Ghaffari
    • 1
    • 2
  • Mohammad Nouri
    • 1
  • Amir Ata Saei
    • 3
  • Mohammad-Reza Rashidi
    • 3
  1. 1.Biochemistry Department, Faculty of MedicineTabriz University of Medical SciencesTabrizIran
  2. 2.Students’ Research CommitteeTabriz University of Medical SciencesTabrizIran
  3. 3.Research Center for Pharmaceutical NanotechnologyTabriz University of Medical SciencesTabrizIran