Advanced glycation end-product formation (AGE formation)

Advanced glycation end-product formation refers to the nonenzymatic chemical process by which proteins, lipids, or nucleic acids react with reducing sugars—primarily through the Maillard reaction—to form advanced glycation end-products (AGEs)[1][3][7]. This process occurs both in vivo and ex vivo and is accelerated under conditions of high sugar concentration and oxidative stress. The initial steps involve the creation of a Schiff base between a sugar and an amino group on a biomolecule, followed by rearrangement into Amadori products. These early products undergo further complex reactions—including oxidation and dehydration—to become irreversible AGEs[1][2]. AGEs accumulate naturally with aging but are found at higher levels in individuals with diabetes or chronic hyperglycemia. Their buildup is associated with increased oxidative stress and inflammation due to their interaction with cellular receptors such as RAGE (receptor for advanced glycation end-products), which can activate pro-inflammatory pathways like NF-kB signaling[3]. Elevated AGE levels have been implicated in the pathogenesis of several diseases including diabetic complications, cardiovascular disease, neurodegeneration, renal failure, and general inflammation[5][7]. While some drugs aim to inhibit AGE formation—such as aminoguanidine or aldose reductase inhibitors—the "formation" itself is not considered a discrete molecular target like an enzyme or receptor but rather describes a pathological biochemical pathway/process. Therefore, it should not be classified as a therapeutic target per se; instead focus should be on specific enzymes involved in this pathway (e.g., aldose reductase) or receptors mediating downstream effects (e.g., RAGE)[2][3]. Notably, serum AGE concentrations and skin autofluorescence are being explored as biomarkers for monitoring disease risk/progression related to excessive AGE accumulation[6].

Other names

Advanced glycationGlycation processMaillard reaction (in biological context)

Inhibition of nonenzymatic glycation reactions[3]; Scavenging reactive carbonyl intermediates[2]