Journal
TOXICOLOGY AND APPLIED PHARMACOLOGY
Volume 217, Issue 3, Pages 332-341Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.taap.2006.09.013
Keywords
kahweol; adhesion molecule; endothelial cell; NF-kappa B
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Endothelial cells produce adhesion molecules after being stimulated with various inflammatory cytokines. These adhesion molecules play an important role in the development of atherogenesis. Recent studies have highlighted the chemoprotective and anti-inflammatory effects of kahweol, a coffee-specific diterpene. This study examined the effects of kahweol on the cytokine-induced monocyte/human endothelial cell interaction, which is a crucial early event in atherogenesis. Kahweol inhibited the adhesion of TNF alpha-induced monocytes to endothelial cells and suppressed the TNFa-induced protein and mRNA expression of the cell adhesion molecules, VCAM-1 and ICAM-1. Furthermore, kahweol inhibited the TNFa-induced JAK2-PI3K/Akt-NF-kappa B activation pathway in these cells. Overall, kahweol has anti-inflammatory and anti-atherosclerotic activities, which occurs partly by down-regulating the pathway that affects the expression and interaction of the cell adhesion molecules on endothelial cells. (c) 2006 Elsevier Inc. All rights reserved.
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