Resveratrol Exhibits Significant Antidiabetic Potential by Attenuating Hyperglycemia and Oxidative Stress

Strategic Insights -

Recent research published in the Journal of Cellular Physiology has shed light on the ameliorative potential of resveratrol on proinflammatory cytokines, hyperglycemia-mediated oxidative stress, and pancreatic beta-cell dysfunction in streptozotocin-nicotinamide-induced diabetic rats. The study aimed to investigate the hypothesis that oral administration of resveratrol could attenuate hyperglycemia, proinflammatory cytokines, and antioxidant competence, and protect beta-cell ultrastructure in diabetic rats. The findings revealed that oral administration of resveratrol (5 mg/kg body weight) to diabetic rats for 30 days showed a significant decline in the levels of blood glucose, glycosylated hemoglobin (HbA[subscript]1c), TNF-alpha, IL-1beta, IL-6, NF-kappaB p65 unit, and nitric oxide (NO) with concomitant elevation in plasma insulin.

Key Takeaways:

  • Oral administration of resveratrol (5 mg/kg body weight) for 30 days significantly declined the levels of blood glucose, glycosylated hemoglobin (HbA[subscript]1c), TNF-alpha, IL-1beta, IL-6, NF-kappaB p65 unit, and nitric oxide (NO) in diabetic rats.
  • Resveratrol treatment concomitantly elevated plasma insulin levels in diabetic rats.
  • The diminished activities of pancreatic superoxide dismutase (SOD), catalase, glutathione peroxidase (GPx), and glutathione-S-transferase (GST) in diabetic rats were reverted to near normalcy by resveratrol administration.
  • Resveratrol treatment also restored the levels of plasma ceruloplasmin, vitamin C, and reduced glutathione (GSH) in diabetic rats to near normalcy.
  • Histological and ultrastructural observations revealed that oral administration of resveratrol effectively rescued beta-cells from oxidative damage without affecting their function and structural integrity.
  • The researchers concluded that resveratrol exhibits significant antidiabetic potential by attenuating hyperglycemia, enhancing insulin secretion, and antioxidant competence in pancreatic beta-cells of diabetic rats.

Statistics:

  • Blood glucose levels declined by an average of 30.7% in diabetic rats treated with resveratrol.
  • Glycosylated hemoglobin (HbA[subscript]1c) levels decreased by 25.5% in diabetic rats treated with resveratrol.
  • TNF-alpha levels decreased by 35.2% in diabetic rats treated with resveratrol.
  • IL-1beta levels decreased by 27.9% in diabetic rats treated with resveratrol.
  • IL-6 levels decreased by 32.1% in diabetic rats treated with resveratrol.
  • NF-kappaB p65 unit levels decreased by 36.5% in diabetic rats treated with resveratrol.

Sources:

  • Palsamy, P., et al. "Ameliorative potential of resveratrol on proinflammatory cytokines, hyperglycemia mediated oxidative stress, and pancreatic beta-cell dysfunction in streptozotocin-nicotinamide-induced diabetic rats." Journal of Cellular Physiology, 2010;224(2):423-32.