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Effects of carnosine and related compounds on monosaccharide autoxidation and H2O2 formation

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Authors
Lee, Beom Jun; Kang, Kyung Sun; Nam, Sang Yoon; Park, Jae Hak; Lee, Yong Soon; Yun, Young Won; Cho, Myung-Haing
Issue Date
1999-06
Citation
The Korean Journal of Physiology & Pharmacology, Vol.3 No.3, pp.251-261
Keywords
α-ketoaldehydeAntioxidantCarnosine and related compoundsFree radicalsGlucose oxidationGlycation
Abstract
The effects of carnosine and related compounds (CRCs) including anserine, homocarnosine, histidine, and β-alanine on monosaccharide autoxidation and H2O2 formation were investigated. The incubation of CRCs with D-glucose, D-glucosamine, and D, L-glyceraldehyde at 37°C increased the absorption maxima at 285 nm, 273 nm, and 290~330 nm, respectively. D, L- glyceraldehyde was the most reactive sugar with CRCs. The presence of copper strongly stimulated the reaction of carnosine and anserine with D-glucose or D-glucosamine. Carnosine and anserine stimulated H2O2 formation from D- glucose autoxidation in a dose-dependent manner in the presence of 10 μM Cu (II). The presence of human serum albumin (HSA) decreased their effect on H2O2 formation. Carnosine and anserine has a biphasic effect on α- ketoaldehyde formation from glucose autoxidation, CRCs inhibited glycation of HSA as determined by hydroxymethyl furfural, lysine residue with free ε- amino group, and fructosamine assay. These results suggest that CRCs may be protective against diabetic complications by reacting with sugars and protecting glycation of protein.
ISSN
1226-4512
URI
https://hdl.handle.net/10371/172510
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College of Veterinary Medicine (수의과대학)Dept. of Veterinary Medicine (수의학과)Journal Papers (저널논문_수의학과)
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