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  • Title: The coffee diterpene kahweol inhibits tumor necrosis factor-alpha-induced expression of cell adhesion molecules in human endothelial cells.
    Author: Kim HG, Kim JY, Hwang YP, Lee KJ, Lee KY, Kim DH, Kim DH, Jeong HG.
    Journal: Toxicol Appl Pharmacol; 2006 Dec 15; 217(3):332-41. PubMed ID: 17097123.
    Abstract:
    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 TNFalpha-induced monocytes to endothelial cells and suppressed the TNFalpha-induced protein and mRNA expression of the cell adhesion molecules, VCAM-1 and ICAM-1. Furthermore, kahweol inhibited the TNFalpha-induced JAK2-PI3K/Akt-NF-kappaB 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.
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