Resveratrol alleviates cardiac dysfunction in streptozotocin-induced diabetes: Role of nitric oxide, thioredoxin, and heme oxygenase

Free Radic Biol Med. 2007 Sep 1;43(5):720-9. doi: 10.1016/j.freeradbiomed.2007.05.004. Epub 2007 May 10.


Excessive oxidative stress has been implicated in the pathology and complications of diabetes, which leads to myocardial ischemia reperfusion injury. The present study was designed to examine whether resveratrol (trans-3,5,4'-trihydroxystilbene), a polyphenolic compound present in red wine has a direct cardioprotective effect on diabetic myocardium. Resveratrol (2.5 mg/kg body wt/day) and L-NAME (25 mg/kg body wt/day) were administered orally for 15 days to streptozotocin (65 mg/kg)-induced diabetic rats. Sprague Dawley rats were divided into 5 groups: (i) control, (ii) diabetic, (iii) diabetic+resveratrol, (iv) diabetic+resveratrol+L-NAME (nitric oxide synthase inhibitor), and (v) diabetic+L-NAME. In our present study resveratrol demonstrated significant reduction in glucose level in diabetic rats. After the treatment, the hearts were excised and subjected to 30 min of global ischemia followed by 2 h of reperfusion. Resveratrol-treated diabetic rats demonstrated significant reduction in glucose levels as compared to the nontreated diabetic animals, and improved left ventricular function throughout reperfusion compared to the diabetic or L-NAME-treated animals (dp/dt(max) 1457+/-51 vs 999+/-44 mm Hg/s at 120 min reperfusion). Cardioprotection from ischemic injury in resveratrol-treated diabetic rats showed decreased infarct size (42% vs 51%) and cardiomyocyte apoptosis (35% vs 40%) as compared with diabetic animals. Resveratrol produced significant induction of p-AKT, p-eNOS, Trx-1, HO-1, and VEGF in addition to increased activation of MnSOD activity in diabetic animals compared to nondiabetic animals. However treatment with L-NAME in resveratrol-treated and nontreated diabetic animals demonstrated significant downregulation of the above-noted protein expression profile and MnSOD activity. In the present study we found that the mechanism(s) responsible for the cardioprotective effect of resveratrol in the diabetic myocardium include upregulation of Trx-1, NO/HO-1, and VEGF in addition to increased MnSOD activity and reduced blood glucose level. Thus this study shows a novel mechanism of pharmacological preconditioning with resveratrol in the diabetic myocardium.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • Apoptosis / drug effects
  • Blood Glucose / metabolism
  • Diabetes Mellitus, Experimental / complications
  • Diabetes Mellitus, Experimental / drug therapy*
  • Diabetes Mellitus, Experimental / metabolism*
  • Diabetes Mellitus, Experimental / pathology
  • Gene Expression Regulation
  • Heart Diseases / complications
  • Heart Diseases / drug therapy
  • Heart Diseases / metabolism*
  • Heart Diseases / physiopathology
  • Heme Oxygenase (Decyclizing) / genetics
  • Heme Oxygenase (Decyclizing) / metabolism*
  • In Situ Nick-End Labeling
  • Male
  • Nitric Oxide / metabolism*
  • Nitric Oxide Synthase Type III / metabolism
  • Phosphorylation / drug effects
  • Proto-Oncogene Proteins c-akt / metabolism
  • RNA, Messenger / genetics
  • Rats
  • Resveratrol
  • Stilbenes / therapeutic use*
  • Streptozocin / pharmacology
  • Superoxide Dismutase / metabolism
  • Thioredoxins / genetics
  • Thioredoxins / metabolism*
  • Vascular Endothelial Growth Factor A / genetics
  • Vascular Endothelial Growth Factor A / metabolism


  • Blood Glucose
  • RNA, Messenger
  • Stilbenes
  • Vascular Endothelial Growth Factor A
  • Nitric Oxide
  • Thioredoxins
  • Streptozocin
  • Nitric Oxide Synthase Type III
  • Heme Oxygenase (Decyclizing)
  • Superoxide Dismutase
  • Proto-Oncogene Proteins c-akt
  • Resveratrol