Nicotinamide Riboside and Resveratrol Enhance Wound Healing in Diabetic Rats: Preclinical Findings
Synopsis
Diabetes impairs wound healing by disrupting autophagy and promoting apoptosis. In a type 1 diabetic rat model, systemic and topical nicotinamide riboside (NR) and resveratrol (RSV) significantly improved wound closure. Treatment boosted SIRT1, FOXO1, VEGF, LC3IIβ, ATG5, and Bcl-2 expression, while reducing pro-apoptotic markers BAX and Caspase-3. These changes restored balanced autophagy, reduced apoptosis, and enhanced vascularization. Stereological analysis confirmed improved epidermal/dermal structure, collagen density, fibroblast proliferation, and vascularity. The combined NR+RSV treatment produced the strongest effects. Overall, NR and RSV enhance diabetic wound healing by activating the SIRT1–FOXO1 axis and correcting autophagy–apoptosis imbalance, supporting their potential as targeted therapies for diabetic wounds.
Journal
The Journal of Nutritional Biochemistry