SIRT1 and diabetic kidney disease: Resveratrol attenuates proteinuria and reduces malondialdehyde levels in diabetic mice, in addition to increasing renal cortical Mn-SOD activity, inhibiting apoptosis of glomerular podocytes and RTECs, improving pathological manifestations, and restoring Sirt1 and PGC-1α expression in the renal tissues of DKD mice.