Abstract
Glycation, the non-enzymatic binding of glucose to free amino groups of an amino acid,
yields irreversible heterogeneous compounds known as advanced glycation end products.
Those products play a significant role in diabetic complications. In the present article
we briefly discuss the contribution of advanced glycation end products to the pathogenesis
of diabetic complications, such as atherosclerosis, diabetic retinopathy, nephropathy,
neuropathy, and wound healing. Then we mention the various mechanisms by which polyphenols
inhibit the formation of advanced glycation end products. Finally, recent supporting
documents are presented to clarify the inhibitory effects of polyphenols on the formation
of advanced glycation end products. Phytochemicals apply several antiglycation mechanisms,
including glucose metabolism, amelioration of oxidative stress, scavenging of dicarbonyl
species, and up/down-regulation of gene expression. To utilize polyphenols in order
to remedy diabetic complications, we must explore, examine and clarify the action
mechanisms of the components of polyphenols.
Key words
AGEs - diabetic complications - polyphenols - antiglycation - hyperglycemia - antioxidant