Title: Antenatal fetal VEGF therapy to promote pulmonary maturation in a preterm rabbit model
Authors: Debeer, Anne ×
Sbragia, L
Vrancken, K
Hendriks, Adriaan
Roubliova, X
Jani, J
Naulaers, Gunnar
Carmeliet, Peter
Deprest, Jan #
Issue Date: 22-Feb-2010
Publisher: Elsevier/North-Holland
Series Title: Early Human Development vol:86 issue:2 pages:99-105
Abstract: AIM: To assess the effects of fetal tracheal administration of VEGF on pulmonary maturation in a preterm rabbit model. METHODS: On day 26 (term=31days), fetal rabbits received recombinant rat VEGF (30microg in 70microL normal saline) or placebo (normal saline 70microL) intratracheally, with or without subsequent tracheal occlusion. Non-operated littermates served as internal controls. Fetuses were harvested on day 28 for morphometric study of the lungs or for mechanical ventilation and measurement of lung mechanics. In total, 96 fetuses from 42 does were used, 47 for ventilation and 49 for morphometry. RESULTS: In fetuses receiving intratracheal VEGF, an increase in immunoreactivity for Flk-1 was observed throughout the lung parenchyma. Tracheal occlusion (TO) adversely affected pulmonary mechanics as compared to un-occluded controls. That effect is partly reversed by intratracheal VEGF. Intratracheal injection of VEGF without tracheal occlusion improves lung mechanics but no more than what was observed in placebo injected controls. CONCLUSION: Antenatal intratracheal VEGF administration was associated with an increase in Flk-1 immunoreactivity. It also improves lung mechanics, however more so when the trachea is occluded. Without TO, the effects were comparable to placebo controls.
ISSN: 0378-3782
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Foetal Medicine Section (-)
Section Newborn (-)
Vesalius Research Centre (-)
Laboratory of Angiogenesis and Vascular Metabolism (VIB-KU Leuven Centre for Cancer Biology) (+)
× corresponding author
# (joint) last author

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