Effect of low molecular weight heparin on the expression of endothelial protein C receptor and protease activated receptor 1 in abdominal aortic endothelial cells of septic rats
10.3760/cma.j.issn.1008-1372.2011.05.013
- VernacularTitle:低分子肝素对脓毒症大鼠腹主动脉内皮细胞蛋白C受体和蛋白酶活化受体1表达的影响
- Author:
Yunfeng LI
;
Yeping CAI
;
Shengan ZHANG
;
Xingui DAI
- Publication Type:Journal Article
- Keywords:
Heparin,low-molecular-weight/PD;
Sepsis/ME;
Endothelial cells/ME/DE;
Protein C/ME;
Receptor,PAR-1/ME
- From:
Journal of Chinese Physician
2011;13(5):621-623
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of low molecular weight heparin (LMWH) on the expression of endothelial protein C receptor (EPCR) and protease activated receptor 1 (PAR1) in abdominal vascular endothelial cells (VECs) of septic rats. Methods VECs were cultured by tissue-sticking method, and the purity was determined with flow cytometry (FCM). VECs were randomly divided into three groups: control group, septic group (LPS 1 μg/ml) and LMWH group (LPS 1 μg/ml+LMWH 5 μg/ml). The VECs were collected at 1st, 3rd, 5th days after stimulated. The expression of EPCR and PAR1 were assessed by FCM. Results The expression of EPCR and PAR1 of septic group decreased significantly compared with control group at each time point (P＜0.05 or P＜0.01), and the expression decreased most obviously on day 5 (26.53±7.21 vs 39.26±2.62,q＝6.45,P＜0.01;53.21±15.10 vs 86.54±11.34,q＝6.94,P＜0.01). In LMWH group, the levels of EPCR and PAR1 expression were higher than setpic group at each time point (P＜0.05). Compared to control group, the expression of EPCR had a significantly decrease on day 1 (40.86±1.63 vs 45.41±2.82,q＝3.51,P＜0.05), which had no significantly different on day 3 and 5 (41.20±3.32 vs 42.83±2.66,P＞0.05;39.23±3.33 vs 39.26±2.62,P＞0.05), and the expression of PAR1 were not significantly decrease compared with control group at each time point (P＞0.05). Conclusions LMWH could improve the inhibition status and the expression of EPCR and PAR1 on VECs in septic rats.
