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
in Chinese
| WPRIM
| ID: wpr-343395
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>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
Benzofurans
/
RNA, Messenger
/
Plant Extracts
/
Gene Expression
/
Chemistry
/
U937 Cells
/
Ginkgo biloba
/
Vascular Endothelial Growth Factor A
/
Foam Cells
Type of study:
Prognostic study
Limits:
Humans
Language:
Chinese
Journal:
Acta Pharmaceutica Sinica
Year:
2002
Type:
Article
Similar
MEDLINE
...
LILACS
LIS