Nonenzymatic glycation of proteins (Advanced glycation end-product formation) (AGE formation)

Nonenzymatic glycation of proteins, also known as the Maillard reaction, is a spontaneous chemical process where reducing sugars react with the amino groups of proteins without the mediation of enzymes (PMID: 11730337). This reaction progresses through the formation of Schiff bases and Amadori products to create irreversible Advanced Glycation End-products (AGEs) (PMID: 15181025). AGEs accumulate on long-lived proteins like collagen and crystallin, leading to structural stiffness and functional impairment (PMID: 10410299). In chronic conditions like diabetes, accelerated glycation contributes to microvascular and macrovascular complications, including nephropathy and atherosclerosis (PMID: 15607126). Pharmacological intervention focuses on inhibiting the formation of reactive dicarbonyl intermediates or breaking existing AGE-mediated cross-links to mitigate tissue damage (PMID: 11134168). Additionally, AGEs interact with specific receptors like RAGE, triggering pro-inflammatory signaling pathways that exacerbate tissue injury (PMID: 12488523). Targeting this process is considered a potential strategy for treating age-related diseases and diabetic complications (PMID: 16318483). However, clinical success has been limited by the complexity of the reaction and the need for high specificity in scavenging reactive intermediates (PMID: 18485124).

Other names

Maillard reactionProtein glycationAdvanced glycation end-product formationNon-enzymatic glycosylation

Inhibition of reactive carbonyl species (RCS) formation, scavenging of dicarbonyl intermediates, and breaking of established protein-protein cross-links.