Glycation

Definition

Glycation is a non-enzymatic chemical reaction in which sugars or sugar-derived molecules bind to proteins, lipids, or nucleic acids. Over time, these reactions can produce advanced glycation end-products, often abbreviated as AGEs, which can alter tissue structure and cell signalling. [1] [2] [3]

Why It Matters in Ageing Research

Glycation matters in ageing research because long-lived molecules such as collagen can accumulate glycation-related modifications over time. These changes may contribute to tissue stiffness, extracellular matrix crosslinking, vascular ageing, inflammation, and complications of metabolic disease. Glycation is therefore studied as one contributor to age-related damage rather than as a complete explanation for ageing by itself. [2] [3] [4] [5]

Common Confusion

• Glycation is not the same as glycosylation, which is an enzyme-controlled biological process.
• AGEs can come from processes inside the body as well as from some foods.
• Glycation is relevant to ageing, but it is only one part of a much larger biology of damage, repair, metabolism, and inflammation.

Related Reading

• Advanced Glycation End-Products
• Extracellular Matrix
• Inflammaging

References

1. Brownlee, M. (1995). Advanced protein glycosylation in diabetes and aging. https://pubmed.ncbi.nlm.nih.gov/7499189/
2. Singh, R., et al. (2001). Advanced glycation end-products: A review. https://pubmed.ncbi.nlm.nih.gov/11188141/
3. Semba, R. D., et al. (2010). Advanced glycation end products and their circulating receptors predict cardiovascular disease mortality in older community-dwelling women. https://pubmed.ncbi.nlm.nih.gov/20031564/
4. Ramasamy, R., et al. (2005). Receptor for advanced glycation endproducts: Fundamental roles in the inflammatory response. https://pubmed.ncbi.nlm.nih.gov/16037297/
5. Verzijl, N., et al. (2000). Effect of collagen turnover on the accumulation of advanced glycation end products. https://pubmed.ncbi.nlm.nih.gov/10788434/