Identification and Determination of α-Dicarbonyl Compounds Formed in the Degradation of Sugars
作者:Teruyuki USUI、Satoshi YANAGISAWA、Mio OHGUCHI、Miku YOSHINO、Risa KAWABATA、Junko KISHIMOTO、Yumi ARAI、Kaoru AIDA、Hirohito WATANABE、Fumitaka HAYASE
DOI:10.1271/bbb.70229
日期:2007.10.23
The α-dicarbonyl compounds formed in the degradation of glucose and fructose were analyzed by HPLC using 2,3-diaminonaphthalene as derivatizing reagent, and identified as glucosone (GLUCO), 3-deoxyglucosone (3DG), 3-deoxyxylosone (3DX), tetrosone (TSO), triosone (TRIO), 3-deoxytetrosone (3DT), glyoxal (GO), and methylglyoxal (MGO). The results suggest that α-dicarbonyl compounds were formed from glucose via non-oxidative 3-deoxyglucosone formation and oxidative glucosone formation in glucose degradation. In addition, TRIO, GO, and MGO were also formed from glyceraldehyde as intermediate. The α-dicarbonyl compounds might be formed from glucose via these pathways in diabetes.
在葡萄糖和果糖降解过程中形成的α-二羰基化合物通过高效液相色谱(HPLC)使用2,3-二氨基萘作为衍生试剂进行分析,识别为葡萄糖苷(GLUCO)、3-脱氧葡萄糖苷(3DG)、3-脱氧木糖苷(3DX)、四碳糖苷(TSO)、三碳糖苷(TRIO)、3-脱氧四碳糖苷(3DT)、乙二醛(GO)和甲乙二醛(MGO)。结果表明,在葡萄糖降解过程中,α-二羰基化合物是通过非氧化的3-脱氧葡萄糖苷形成和氧化的葡萄糖苷形成而产生的。此外,TRIO、GO和MGO也作为中间体从甘油醛中形成。这些α-二羰基化合物可能通过这些途径在糖尿病中由葡萄糖形成。