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Ann N Y Acad Sci. 2008 Apr;1126:262-4. doi: 10.1196/annals.1433.035.

Reversal of hyperglycemia-induced angiogenesis deficit of human endothelial cells by overexpression of glyoxalase 1 in vitro.

Author information

1
Department of Biological Sciences, University of Essex, Colchester, United Kingdom.

Abstract

Dicarbonyl glycation of RGD and GFOGER sites in type IV collagen has been associated with decreased angiogenesis. In this study, we investigated whether overexpression of glyoxalase 1 to decrease dicarbonyl glycation would prevent the angiogenesis deficit induced by hyperglycemia in vitro. Transfection of human microvascular endothelial cells resulted in a four-fold increase in glyoxalase 1 activity compared with controls. Incubation of human microvascular endothelial cells in model hyperglycemia produced a 32% decrease in formation of tube structures that was prevented by glyoxalase 1 overexpression. We conclude that increased protection against dicarbonyl glycation of endothelial cell protein protects hyperglycemia-induced angiogenesis deficit.

PMID:
18448827
PMCID:
PMC2642625
DOI:
10.1196/annals.1433.035
[Indexed for MEDLINE]
Free PMC Article

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