Effects of resveratrol on biomarkers of oxidative stress and on the activity of delta aminolevulinic acid dehydratase in liver and kidney of streptozotocin-induced diabetic rats

► Oxidative stress plays a crucial role in the pathogenesis of diabetes. ► Resveratrol is a polyphenol with potent antioxidant properties. ► Diabetic rats presented an increase in oxidative stress in liver and kidney. ► Treatment with resveratrol prevented hepatic and renal oxidative damage in diabetic rats.