Vitamin E decreases the hyperglucagonemia of diabetic rats

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Citations (Scopus)


Vitamin E has the ability to scavenge a wide spectrum of free radicals, including singlet oxygen, superoxide, and hydroxyl radicals. It has beneficial effects against several other disorders, such as atherosclerosis and ischemic heart disease, because it acts as a transcriptional regulator for gene expression via a transcription factor TAP. The beneficial effect of vitamin E on plasma insulin and glucagon levels was examined using radioimmunoassay technique. Diabetes was induced in rats by a single intraperitoneal injection of streptozotocin at a dose of 60 mg/kg body weight. Vitamin E was given at a dose of either 0.2 mg, 0.4 mg, or 0.8 mg per animal 10 days before and after the onset of diabetes. Vitamin E significantly (P < 0.05) increased plasma insulin levels in normal rats but failed to increase the plasma insulin level in diabetic rats. In contrast, vitamin E caused a significant (P < 0.05) reduction in plasma glucagon level in rats treated before and after the onset of diabetes. Vitamin E may ameliorate some diabetic complication via reduction in the level of circulating glucagon.

Original languageEnglish
Title of host publicationDiabetes Mellitus and Its Complications
Subtitle of host publicationMolecular Mechanisms, Epidemiology, and Clinical Medicine
PublisherBlackwell Publishing Inc.
Number of pages10
ISBN (Print)1573316350, 9781573316354
Publication statusPublished - Nov 2006

Publication series

NameAnnals of the New York Academy of Sciences
ISSN (Print)0077-8923
ISSN (Electronic)1749-6632


  • Diabetes
  • Hyperglucagonemia, rat
  • Insulin
  • Radioimmunoassay

ASJC Scopus subject areas

  • General Neuroscience
  • General Biochemistry,Genetics and Molecular Biology
  • History and Philosophy of Science


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