Effects of carnosine and related compounds on monosaccharide autoxidation and H2O2 formation
The Korean Journal of Physiology and Pharmacology
; : 251-261, 1999.
Article
in En
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| ID: wpr-728249
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ABSTRACT
The effects of carnosine and related compounds (CRCs) including anserine, homocarnosine, histidine, and beta-alanine on monosaccharide autoxidation and H2O2 formation were investigated. The incubation of CRCs with D-glucose, D-glucosamine, and D, L-glyceraldehyde at 37degreeC 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 muM Cu (II). The presence of human serum albumin (HSA) decreased their effect on H2O2 formation. Carnosine and anserine has a biphasic effect on alpha-ketoaldehyde formation from glucose autoxidation. CRCs inhibited glycation of HSA as determined by hydroxymethyl furfural, lysine residue with free epsilon-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.
Key words
Full text:
1
Index:
WPRIM
Main subject:
Serum Albumin
/
Carnosine
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Carbohydrates
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Beta-Alanine
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Fructosamine
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Copper
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Diabetes Complications
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Absorption
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Free Radicals
/
Furaldehyde
Limits:
Humans
Language:
En
Journal:
The Korean Journal of Physiology and Pharmacology
Year:
1999
Type:
Article