Intramyocardial gene transfer of vascular endothelial growth factor 121 improves myocardial perfusion and function in the ischemic porcine heart
Electron. j. biotechnol
; 7(3): 08-09, Dec. 2004. ilus, graf, tab
Article
em En
| LILACS
| ID: lil-448765
Biblioteca responsável:
CL1.1
ABSTRACT
Vascular endothelial growth factor (VEGF) is an endothelial cell-specific mitogen that is angiogenic in vitro and in vivo. Several studies report on gene transfer of VEGF121 to promote angiogenesis in the ischemic myocardium of animals and patients. We hypothesized that intramyocardial administration of naked plasmid DNA encoding VEGF121 could improve myocardial perfusion and function in a porcine model of myocardial ischemia. Yorkshire swine underwent thoracotomy and placement of an ameroid constrictor on the circumflex coronary artery. Four weeks later, pVEGF121 plasmid was administered into the ischemic myocardium. Four weeks after gene transfer, SPECT imaging demonstrated significant reduction in the ischemic area in pVEGF121-treated animals compared with controls. In the pVEGF121 group, most of the animals evolved from light ischemia to a normal perfusion. In contrast, control animals exhibited similar or impaired ischemic conditions. Our results indicate that intramyocardial gene transfer of VEGF121 as naked plasmid DNA results in significant improvement in myocardial perfusion and function.
Texto completo:
1
Índice:
LILACS
Assunto principal:
Terapia Genética
/
Isquemia Miocárdica
/
Circulação Colateral
/
Fator A de Crescimento do Endotélio Vascular
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Electron. j. biotechnol
Assunto da revista:
BIOTECNOLOGIA
Ano de publicação:
2004
Tipo de documento:
Article