Expression of vascular endothelial growth factor in U937 foam cells and the inhibitory effect of drugs / 药学学报
Acta Pharmaceutica Sinica
; (12): 86-89, 2002.
Article
Dans Zh
| WPRIM
| ID: wpr-343395
Responsable en Bibliothèque :
WPRO
ABSTRACT
<p><b>AIM</b>To study the expression of vascular endothelial growth factor (VEGF) in U937 foam cells and the inhibitory effect of salvianolic acid B and Ginkgo biloba extract in vitro.</p><p><b>METHODS</b>U937 cells were incubated with 80 mg.L-1 oxidized low density lipoprotein (OX-LDL) for 48 h and a macrophage-derived foam cell model was established. The VEGF concentration in the media was determined by ELISA; the VEGF protein expression in cells was measured with immunohistochemistry; the VEGF mRNA level in cells was measured by in situ hybridization; the positive ratio detected by a morphometrical analysis system was used as the amount of the VEGF protein expression and the mRNA level.</p><p><b>RESULTS</b>After U937 cells were incubated with OX-LDL, VEGF expression level increased greatly both in the cells and in the media. Salvianolic acid B and Ginkgo biloba extract were shown to remarkably inhibit the increase of VEGF. After treated with 10 micrograms/L-1 salvianolic acid B and Ginkgo biloba extract, the VEGF protein concentration in the media and positive ratio in the cells decreased compared with foam cells. After treated with 10 micrograms.L-1 salvianolic acid B and 100 micrograms.L-1 Ginkgo biloba extract, the VEGF mRNA level decreased measured by in situ hybridization.</p><p><b>CONCLUSION</b>A high VEGF expression level was determined in U937 foam cells. Salvianolic acid B and Ginkgo biloba extract were found to inhibit VEGF expression significantly in U937 foam cells in vitro.</p>
Texte intégral:
1
Indice:
WPRIM
Sujet Principal:
Pharmacologie
/
Benzofuranes
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ARN messager
/
Extraits de plantes
/
Expression des gènes
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Chimie
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Cellules U937
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Ginkgo biloba
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Facteur de croissance endothéliale vasculaire de type A
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Cellules spumeuses
Type d'étude:
Prognostic_studies
Limites du sujet:
Humans
langue:
Zh
Texte intégral:
Acta Pharmaceutica Sinica
Année:
2002
Type:
Article