Traque-oclusão intra-útero: técnica cirúrgica assistida à corticoterapia promove aumento nos receptores de VEGF (Vascular Endothelial Growth Factor) em pulmões de fetos de ratas / In utero tracheal occlusion: surgical approach associated to steroid treatment increase VEGF (Vascular Endothelial Growth Factor) receptors in lungs of fetal rats
Rev. med. (Säo Paulo)
; 86(1): 20-27, jan.-mar. 2007. ilus, graf
Article
in Pt
| LILACS
| ID: lil-498351
Responsible library:
BR66.1
RESUMO
A hérnia diafragmática congênita (HDC) causa hipoplasia e hipertensãopulmonar e em geral leva a alta morbidade e mortalidade neonatal. Traqueo-oclusão fetal (TO) e corticoterapia pré-natal são alternativas para acelerar o crescimento pulmonar fetal e diminuir a hipoplasia na HDC. A produção de VEGF (Vascular Endothelial Growth Factor) está relacionada com a maturidade pulmonar e sofre alterações na HDC ainda não elucidadas.Materiais e métodos:
Seis grupos de 12 fetos de ratos Spreague-Dawley foram comparados TO, Sham, Controle, TO+Dex, Sham+Dex e Controle+Dex. No dia 18,5º foi realizada TO come sem corticoterapia utilizando dexametasona. No 21,5º dia gestacional os pesos corporal e...ABSTRACT
Congenital diaphragmatic hernia (CDH) presents with hypoplastic lungs and usually leads to pulmonary hypertension and high neonatal mortality. Fetal tracheal occlusion (TO) and prenatal corticotherapy are alternatives to accelerate fetal pulmonary growth and decrease hypoplasia in CDH. VEGF (Vascular Endothelial Growth Factor)production and surfactant production by type II pneumocytes are related with pulmonary maturity and are altered in CDH, but little has been described about VEGF receptors. Our objective wasto quantify the receptors of VEGF (VEGFR) and type II pneumocytes, verifying the effects of TO and corticotherapy on normal lungs of fetal rats...
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Index:
LILACS
Main subject:
Hernia, Diaphragmatic
/
Hypertension, Pulmonary
Type of study:
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
Language:
Pt
Journal:
Rev. med. (Säo Paulo)
Year:
2007
Type:
Article