TY - JOUR
T1 - Role for heparin-binding growth factors in glucose-induced vascular dysfunction
AU - Stephan, Clifford C.
AU - Chang, Katherine C.
AU - Lejeune, Wanda
AU - Erichsen, David
AU - Bjercke, Robert J.
AU - Rege, Ajay
AU - Biediger, Ronald J.
AU - Kogant, Timothy P.
AU - Brock, Tommy A.
AU - Williamson, Joseph R.
AU - Tilton, Ronald G.
PY - 1998
Y1 - 1998
N2 - Vascular hyperpermeability and excessive neovascularization are hallmarks of early and late vascular endothelial cell dysfunction induced by diabetes. Vascular endothelial growth factor (VEGF) appears to be an important mediator for these early and late vascular changes. We reported previously, using skin chambers mounted on backs of SD rats, that neutralizing antibodies directed against VEGF blocked vascular permeability and blood flow changes induced by elevated tissue glucose and sorbitol levels in a dosage-dependent manner. We report in this study, using the same skin chamber model and neutralizing antibodies directed against basic fibroblast growth factor (FGF-2), that another member of the heparin-binding growth factor family also mediates glucose- and sorbitol-induced vascular permeability and blood flow increases. In addition, we show that 1) TBC1635, a novel heparin-binding growth factor antagonist, blocks the vascular hyperpermeability and blood flow increases induced by elevated tissue levels of glucose and sorbitol and by topical application of VEGF and FGF-2 to granulation tissue in skin chambers, and 2) suramin, a commercially available growth factor antagonist, blocks glucose-induced vascular dysfunction. These results suggest an early role for heparin-binding growth factors in the vascular dysfunction caused by excessive glucose metabolism, possibly via the sorbitol pathway.
AB - Vascular hyperpermeability and excessive neovascularization are hallmarks of early and late vascular endothelial cell dysfunction induced by diabetes. Vascular endothelial growth factor (VEGF) appears to be an important mediator for these early and late vascular changes. We reported previously, using skin chambers mounted on backs of SD rats, that neutralizing antibodies directed against VEGF blocked vascular permeability and blood flow changes induced by elevated tissue glucose and sorbitol levels in a dosage-dependent manner. We report in this study, using the same skin chamber model and neutralizing antibodies directed against basic fibroblast growth factor (FGF-2), that another member of the heparin-binding growth factor family also mediates glucose- and sorbitol-induced vascular permeability and blood flow increases. In addition, we show that 1) TBC1635, a novel heparin-binding growth factor antagonist, blocks the vascular hyperpermeability and blood flow increases induced by elevated tissue levels of glucose and sorbitol and by topical application of VEGF and FGF-2 to granulation tissue in skin chambers, and 2) suramin, a commercially available growth factor antagonist, blocks glucose-induced vascular dysfunction. These results suggest an early role for heparin-binding growth factors in the vascular dysfunction caused by excessive glucose metabolism, possibly via the sorbitol pathway.
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U2 - 10.2337/diabetes.47.11.1771
DO - 10.2337/diabetes.47.11.1771
M3 - Article
C2 - 9792547
AN - SCOPUS:0031720362
SN - 0012-1797
VL - 47
SP - 1771
EP - 1778
JO - Diabetes
JF - Diabetes
IS - 11
ER -