Effects of quercetin on platelet-endothelial cell adhesion and their expression of adhesion molecules.
- Author:
Zhong-qin LIANG
1
;
Yi ZHU
;
Zhen-lun GU
;
Qun LU
;
Pan-sheng FAN
Author Information
- Publication Type:Journal Article
- MeSH: Blood Platelets; drug effects; metabolism; Cell Adhesion; drug effects; Cells, Cultured; Endothelium, Vascular; drug effects; metabolism; Gene Expression; drug effects; Humans; Intercellular Adhesion Molecule-1; metabolism; P-Selectin; metabolism; Quercetin; pharmacology; Umbilical Veins; cytology
- From: Acta Pharmaceutica Sinica 2003;38(8):574-577
- CountryChina
- Language:Chinese
-
Abstract:
AIMTo observe the effect of quercetin (Que) on the adhesion of platelets to cultured endothelial cells and adhesion molecule expression by human umbilical vein endothelial cells (HUVEC) and platelets.
METHODS[3H]-Adenine labeled platelets were incubated with HUVEC to investigate the effect of Que on adhesion of platelets to HUVEC. The number of platelets adhering to the HUVEC monolayer was determined by liquid scintillation spectroscopy. TNF-alpha induced HUVEC expression ICAM-1 and thrombin induced platelets expression of P-selectin were measured by flow cytometry.
RESULTSQue (0.3-2.4 mumol.L-1) was shown to inhibit the increase of P-selectin expression of thrombin activated platelets. Pretreatment of HUVEC with tumor necrosis factor (TNF-alpha) significantly increased platelets adhesion to HUVEC and the expression ICAM-1. Que (0.6-2.4 mumol.L-1) inhibited this effect of TNF-alpha in a concentration-dependent manner.
CONCLUSIONQue can inhibit the adhesion of platelets to HUVEC and the expression of adhesion molecules (P-selectin and ICAM-1).
