In vivo expression of recombinant vascular endothelial growth factor in rabbit carotid artery increases production of superoxide anion

Osamu Suda, Leslie A. Smith, Livius V. D'Uscio, Timothy E. Peterson, Zvonimir S. Katusic

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

Objective - Vascular endothelial growth factor (VEGF) is one of the most important pro-angiogenic cytokines. Ability of VEGF to stimulate formation of superoxide anion in vivo has not been studied. We hypothesized that in vivo expression of recombinant VEGF in the rabbit carotid artery increases production of superoxide anion. Methods and Results - Plaque-forming units (10 9) of adenovirus-encoding human VEGF165 (AdVEGF) or β-galactosidase (AdLacZ) were delivered into the lumen of rabbit carotid arteries. Three days after gene delivery, expression of recombinant proteins was detected in endothelium and smooth muscle cells. Endothelium-dependent relaxations to acetylcholine were impaired in AdVEGF-transduced arteries (P<0.01; n=5). Treatment with superoxide dismutase mimetic, Mn(III) tetra(4-benzoic acid) porphyrin chloride (10-5 mol/L), improved relaxations to acetylcholine (P<0.01; n=5). Western blot analysis demonstrated increased expression of p47phox in AdVEGF-transduced arteries (P<0.05; n=8). Lucigenin chemiluminescence showed significantly higher production of superoxide anion in AdVEGF-transduced arteries (P<0.05; n=5 to 10). Conclusions - Our results suggest that in vivo expression of recombinant VEGF in the vascular endothelium increases local production of superoxide anion. Superoxide anion appears to be an important mediator of vascular effects of VEGF in vivo.

Original languageEnglish (US)
Pages (from-to)506-511
Number of pages6
JournalArteriosclerosis, thrombosis, and vascular biology
Volume25
Issue number3
DOIs
StatePublished - Mar 2005

Keywords

  • Endothelial function
  • Endothelium
  • Nitric oxide
  • Nitric oxide synthase
  • Reactive oxygen species

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Fingerprint Dive into the research topics of 'In vivo expression of recombinant vascular endothelial growth factor in rabbit carotid artery increases production of superoxide anion'. Together they form a unique fingerprint.

  • Cite this