Potential Role of Platelets in Endothelial Damage Observed During Treatment With Cisplatin, Gemcitabine, and the Angiogenesis Inhibitor SU5416

Abstract

We hypothesize that endothelial cells deprived of VEGF after exposure to SU5416 became activated and more susceptible to damage during treatment with CG+SU5416, which was aggravated by a transient decrease in platelets, which are, among other things, carriers of VEGF. These results suggests that VEGF, in addition to being a permeability, proliferation, and migration factor, also is a maintenance and protection factor for endothelial cells, and that platelets may have a role in maintaining vascular integrity.