Erschienen in:
01.03.2009 | ORIGINAL CONTRIBUTION
Carnosic acid reduces cytokine-induced adhesion molecules expression and monocyte adhesion to endothelial cells
verfasst von:
Ya-Mei Yu, PhD, MPH, Chin-Huei Lin, MS, Hsu-Chin Chan, PhD, Hong-Der Tsai, MD
Erschienen in:
European Journal of Nutrition
|
Ausgabe 2/2009
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Abstract
Background
Expression of cell adhesion molecules on the endothelium and the attachment of monocytes to endothelium may play a major role in the early atherogenic process.
Aim of the study
We investigated the effects of carnosic acid on the adhesion of U937 cells to IL-1β-treated human umbilical vein endothelial cells (HUVECs), as well as on the expression of adhesion molecules.
Results
Our data showed that pretreatment with 10 and 20 µmol/l carnosic acid significantly reduced the number of U937 cells adhering to IL-1β-treated HUVECs. In addition, we found that 20 µmol/l carnosic was more effective than 10 µmol/l carnosic acid at inhibiting expression of cell adhesion molecules (ICAM-1, VCAM-1, and E-selectin), the nuclear translocation of NF-κB subunits p65 and p50, and the production of ROS in IL-1β-stimulated HUVECs.
Conclusions
We conclude that carnosic acid inhibits IL-1β-induced ICAM-1, VCAM-1 and E-selectin expression in HUVECs through a mechanism that involves NFκB. We propose that the reduction in binding of human monocytic cell line U937 to IL-1β-treated HUVECs is due to the anti-inflammatory properties of carnosic acid.