Flavonoids inhibit the formation of the cross-linking AGE pentosidine in collagen incubated with glucose, according to their structure

  • Paul Urios
  • Anne-Marie Grigorova-Borsos
  • Michel Sternberg

DOI: 10.1007/s00394-007-0644-0

Cite this article as:
Urios, P., Grigorova-Borsos, AM. & Sternberg, M. Eur J Nutr (2007) 46: 139. doi:10.1007/s00394-007-0644-0



Glycoxidation of collagens contributes to development of vascular complications in diabetes.

Aim of the study

Since flavonoids are potent antioxidants present in vegetal foods, it was interesting to examine their effect on the formation of a cross-linking advanced glycation endproduct, pentosidine, in collagens.


Collagen was incubated with glucose (250 mM), in the presence of different flavonoids. Pentosidine was measured by HPLC, hydroxyproline colorimetrically.


Monomeric flavonoids (25 and 250 µM) markedly reduced pentosidine/hydroxyproline values in a concentration- and structure-dependent manner. In decreasing order of their specific inhibitory activity, they rank as follows: myricetin ≥ quercetin > rutin > (+)catechin > kaempferol. Thus 3′-OH or 4-oxo + Delta2–3 increase the inhibitory activity; conjugation by Rha-Glc on 3-OH decreases it. Procyanidin oligomers from grape seed were more active than pine bark procyanidin oligomers: this may be related to the galloyl residues present in grape seed oligomers only. Procyanidin oligomers are known to be cleaved into monomers in the gastric milieu and monomeric flavonoids to be absorbed and recovered at micromolar concentrations (with a long plasmatic half-life) in extracellular fluids, in contact with collagens.


Flavonoids are very potent inhibitors of pentosidine formation in collagens. They are active at micromolar concentrations; these might be achieved in plasma of diabetic patients after oral intake of natural flavonoids.


flavonoids pentosidine advanced glycation endproducts (AGEs) collagens procyanidin oligomers diabetes mellitus 

Copyright information

© Steinkopff Verlag Darmstadt 2007

Authors and Affiliations

  • Paul Urios
    • 1
    • 2
  • Anne-Marie Grigorova-Borsos
    • 1
  • Michel Sternberg
    • 1
    • 3
  1. 1.Equipe de recherche “Protéines modifiées, protéases et physiopathologie de l’endothélium vasculaire”, Dépt. de Biochimie, Faculté de Médecine & Laboratoire de Pharmacologie, Faculté de PharmacieUniversité René DescartesParisFrance
  2. 2.Laboratoire de Biochimie, Hormonologie et GénétiqueHôpital BichatParisFrance
  3. 3.Laboratoire de BiochimieHôpital St Vincent-de-PaulParisFrance

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