Journal
PHYTOMEDICINE
Volume 16, Issue 11, Pages 1027-1032Publisher
ELSEVIER GMBH, URBAN & FISCHER VERLAG
DOI: 10.1016/j.phymed.2009.04.003
Keywords
Paeonol; Paeonia suffruticosa; Mitogen-activated protein kinases; TNF-alpha; VCAM-1; Atherosclerosis; Rat aortic endothelial cells
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Funding
- National Natural Science Foundation of China [30772748]
- Natural Science Foundation of Anhui Province [03043002]
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Paeonol (2'-hydroxy-4'-methoxyacetophenone), the main active compound of the radix of Paeonia suffruticosa, has been reported to have a beneficial effect in prevention and treatment of cardiovascular diseases. Vascular cell adhesion molecule-1 (VCAM-1), plays a crucial role in case of early inflammatory responses, including atherosclerosis. In this study, we investigated the effect of paeonol on TNF-alpha-induced VCAM-1 expression in rat aortic endothelial cells (RAECs). The VCAM-1 expression in paeonol treated RAECs was measured. Paeonol inhibited TNF-alpha-induced VCANI-1 expression in a concentration-dependent manner. TNF-alpha induced p38 and extracellular signal-regulated kinase 1/2 (ERK 1/2) activities that contributed to VCAM-1 expression was obviously attenuated after pre-treating RAECs with paeonol. The decrease of VCAM-1 expression by paeonol pretreatment led to a reduction of monocytes adhesion to RAECs. Taken together, our results demonstrated that paeonol inhibited VCAM-1 expression by the attenuation of p38 and ERK 1/2 signal transduction pathways. We concluded that paeonol had the potential therapeutic development for use in anti-inflammatory and vascular disorders. (C) 2009 Elsevier GmbH. All rights reserved.
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