The Inhibition of Advanced Glycation End Products by Carnosine and Other Natural Dipeptides to Reduce Diabetic and Age‐Related Complications
2018
Freund, Michael A. | Chen, Bingcan | Decker, Eric A.
As people age they are at a greater risk for many disorders including cardiovascular, renal, and neurodegenerative diseases, and these conditions are exacerbated by diabetes. An important cause of the maladies associated with both age and diabetes is the formation of advanced glycation end products (AGEs). AGE formation is initiated by glycation reactions between reducing sugars and free amine groups. A cascade of other reactions follows, leading to alterations in membrane function and damage to the proteome, such as protein crosslinking. Compounds that prevent these reactions are currently being researched, but peptides hold great potential as they tend to lack toxicity, are absorbed intact, are easily produced, and are cheaper than other options. Of the peptides researched, carnosine is the most promising. Research suggests that carnosine is absorbed into the plasma unaltered and intact. Carnosine has been shown to prevent AGE formations through reduction of blood glucose, prevention of early glycation, and even reversing previously formed AGEs. Other promising peptides and amino acids include β‐alanine, L‐histidine, homocarnosine, anserine, and glutathione. If bioactive peptides and amino acids can minimize the formation of AGEs, foods containing these peptides could be used to improve health.
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