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Monoclonal anti-vascular endothelial growth factor antibody reduces fluid volume in an experimental model of inflammatory pleural effusion

RIBEIRO, Sabrina C.C. ; VARGAS, Francisco S. ; ANTONANGELO, Leila ; MARCHI, Evaldo ; GENOFRE, Eduardo H. ; ACENCIO, Milena M.P. ; TEIXEIRA, Lisete R.

Respirology (Carlton, Vic.), 2009-11, Vol.14 (8), p.1188-1193 [Revista revisada por pares]

Melbourne, Australia: Blackwell Publishing Asia

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Monoclonal anti-vascular endothelial growth factor antibody reduces fluid volume in an experimental model of inflammatory pleural effusion
Autor: RIBEIRO, Sabrina C.C. ; VARGAS, Francisco S. ; ANTONANGELO, Leila ; MARCHI, Evaldo ; GENOFRE, Eduardo H. ; ACENCIO, Milena M.P. ; TEIXEIRA, Lisete R.
Materias: Angiogenesis Inhibitors - therapeutic use ; Animals ; Antibodies, Monoclonal - immunology ; Antibodies, Monoclonal - therapeutic use ; Antibodies, Monoclonal, Humanized ; Bevacizumab ; Capillary Permeability - physiology ; Contraindications ; cytokines ; Disease Models, Animal ; effusion ; inflammation ; Interleukin-8 - metabolism ; nitrate ; pleural ; Pleural Effusion - chemically induced ; Pleural Effusion - drug therapy ; Pleural Effusion - physiopathology ; Pleurodesis ; Rabbits ; silver ; Silver Nitrate - adverse effects ; talc ; Talc - adverse effects ; Vascular Endothelial Growth Factor A - immunology
Es parte de: Respirology (Carlton, Vic.), 2009-11, Vol.14 (8), p.1188-1193
Notas: istex:760D15CF0BF2430F6DE00F230062712E1FB1E29D
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Descripción: ABSTRACT Background and objective: Vascular endothelial growth factor (VEGF) is known to increase vascular permeability and promote angiogenesis. It is expressed in most types of pleural effusions. However, the exact role of VEGF in the development of pleural effusions has yet to be determined. The anti‐VEGF mAb, bevacizumab, has been used in the treatment of cancer to reduce local angiogenesis and tumour progression. This study describes the acute effects of VEGF blockade on the expression of inflammatory cytokines and pleural fluid accumulation. Methods: One hundred and twelve New Zealand rabbits received intrapleural injections of either talc or silver nitrate. In each group, half the animals received an intravenous injection of bevacizumab, 30 min before the intrapleural agent was administered. Five animals from each subgroup were sacrificed 1, 2, 3, 4 or 7 days after the procedure. Twelve rabbits were used to evaluate vascular permeability using Evans's blue dye. Pleural fluid volume and cytokines were quantified. Results: Animals pretreated with anti‐VEGF antibody showed significant reductions in pleural fluid volumes after talc or silver nitrate injection. IL‐8 levels, vascular permeability and macroscopic pleural adhesion scores were also reduced in the groups that received bevacizumab. Conclusions: This study showed that bevacizumab interferes in the acute phase of pleural inflammation induced by silver nitrate or talc, reinforcing the role of VEGF as a key mediator in the production of pleural effusions. The results also suggest that bevacizumab should probably be avoided in patients requiring pleurodesis.
Editor: Melbourne, Australia: Blackwell Publishing Asia
Idioma: Inglés

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Monoclonal anti-vascular endothelial growth factor antibody reduces fluid volume in an experimental model of inflammatory pleural effusion

RIBEIRO, Sabrina C.C. ; VARGAS, Francisco S. ; ANTONANGELO, Leila ; MARCHI, Evaldo ; GENOFRE, Eduardo H. ; ACENCIO, Milena M.P. ; TEIXEIRA, Lisete R.

Melbourne, Australia: Blackwell Publishing Asia

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