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  • Title: Protection against the diabetogenic effect of feeding tert-butylhydroquinone to rats prior to the administration of streptozotocin.
    Author: Nishizono S, Hayami T, Ikeda I, Imaizumi K.
    Journal: Biosci Biotechnol Biochem; 2000 Jun; 64(6):1153-8. PubMed ID: 10923784.
    Abstract:
    We determined whether an oral administration of the synthetic antioxidant, tert-butylhydroquinone (TBHQ), or the naturally occurring lipoxygenase inhibitor, curcumin, to rats would provide protection against the diabetogenic effect of streptozotocin (STZ). Male Sprague-Dawley rats were fed on an AIN-76-based purified diet containing 0.0028% TBHQ or on the purified diet with a daily intragastric administration of curcumin (200 mg/kg of body weight) for one week while receiving intravenously administered STZ. The rats fed on the TBHQ-containing diet were resistant to diabetes development when compared with the rats fed on the TBHQ-free diet and had a higher body weight gain and lower serum glucose concentration. Glucose-stimulated insulin secretion from the pancreatic islet in the rats that had received TBHQ was higher than that in the control rats. The rats receiving curcumin showed no beneficial effect on these diabetic symptoms. These findings provide direct evidence for the suggestion that dietary supplementation of an antioxidant may exert a preventive effect on the diabetogenic action of free-radical producers.
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