Determination of Advanced Glycation End Products in Serum by Fluorescence Spectroscopy and Competitive ELISA

Gerald Münch, Regina Keis, Andrea Weβels, Peter Riederer, Udo Bahner, August Heidland, Toshimitsu Niwa, Horst Dieter Lemke, Reinhard Schinzel

Research output: Contribution to journalArticlepeer-review

321 Citations (Scopus)

Abstract

Recent studies suggest that advanced glycation endproducts play an important role in cardiovascular complications of ageing, diabetes and end-stage renal failure. Since highly elevated levels of advanced glycation endproducts are present in serum of patients on maintenance haemodialysis, an accurate and rapid assay for their determination would be useful. This would be particularly valuable for monitoring the removal of advanced glycation endproducts by novel dialysis membranes, as well as the effect of new drugs for the inhibition of their formation. Measurement of advanced glycation endproducts in serum was performed by two competitive ELISAs, using a monoclonal antibody directed against imidazolone, an advanced glycation endproduct formed by the reaction of arginine with 3-deoxyglucosone, and a polyclonal antibody directed against keyhole limpet haemocyanin-advanced glycation endproduct, as well as by quantitative fluorescence spectroscopy. Each of the assays showed significant differences between the controls and the maintenance haemodialysis patients. Advanced glycation endproduct levels determined by each of the ELISAs correlated with total and protein-bound fluorescence, but not with each other, suggesting a variable distribution of advanced glycation endproducts on serum proteins among the maintenance haemodialysis patients.

Original languageEnglish
Pages (from-to)669-678
Number of pages10
JournalClinical Chemistry and Laboratory Medicine
Volume35
Issue number9
DOIs
Publication statusPublished - 1997
Externally publishedYes

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