Regulation of vascular endothelial growth factor on the expression of fracture healing-related factors / 中华创伤杂志(英文版)
Chinese Journal of Traumatology
; (6): 345-348, 2007.
Article
em En
| WPRIM
| ID: wpr-236753
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To study the effect of vascular endothelial growth factor (VEGF)and anti-VEGF on the expression of fracture healing-related factors and observe pathological changes at fractured sites.</p><p><b>METHODS</b>Fracture models were established in 105 New Zealand white rabbits and they were randomly divided into control group, VEGF group and anti-VEGF group. The relevant factors expression at fractured sites was assayed and pathological changes were observed in decalcified samples at 8, 24, 72 hours and 1,3,5,8 weeks after fracture.</p><p><b>RESULTS</b>After application of VEGF, the expression of BMP appeared earlier and expression time lasted longer. On the contrary, anti-VEGF completely inhibited the expression of BMP. The fractured sites were filled with fibrous callus, cartilaginous callus and bony callus at the 3rd week and woven bone was constructed at the 5th week. Fracture healing was accomplished at the 8th week in VEGF group. In anti-VEGF polyclonal antibody group, cellular necrosis increased at early period. Continuous focal necrosis was seen in the fractured sites from the 1st week to 5th week. Vascularization reduced obviously at the 3rd week.</p><p><b>CONCLUSIONS</b>Fracture healing is a result of mutual regulation and coordination among many factors. VEGF may be an important factor in fracture healing.</p>
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Índice:
WPRIM
Assunto principal:
Fisiologia
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Fraturas do Rádio
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Fator 2 de Crescimento de Fibroblastos
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Consolidação da Fratura
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Proteínas Morfogenéticas Ósseas
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Fator A de Crescimento do Endotélio Vascular
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Eletroforese em Gel de Poliacrilamida
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Metabolismo
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Revista:
Chinese Journal of Traumatology
Ano de publicação:
2007
Tipo de documento:
Article