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Characterisation of a novel AGE-compound derived from lysine and 3-deoxyglucosone.

Dicarbonyl compounds are supposed to be reactive intermediates in the non-enzymatic glycation of proteins. A process that eventually could lead to the development of late diabetic complications. Glyoxal lysine dimer (GOLD) and methylglyoxal lysine dimer (MOLD) have previously been described as such reactive dicarbonyls. Here a new compound 3-deoxyglucosone lysine dimer (DOLD), a cross-link resulting from the reaction between hippuryl-lysine and 3-deoxyglucosone, has been isolated by HPLC and the structure determined by mass spectrometry and NMR.