Planta Med 2007; 73(5): 439-443
DOI: 10.1055/s-2007-967173
Original Paper
Pharmacology
© Georg Thieme Verlag KG Stuttgart · New York

Low Concentrations of Resveratrol Potentiate the Antiplatelet Effect of Prostaglandins

Chin-Chung Wu1 , Chung-I Wu1 , Wei-Ya Wang1 , Yang-Chang Wu1
  • 1Graduate Institute of Nature Products, Kaohsiung Medical University, Kaohsiung City, Taiwan, ROC
Further Information

Publication History

Received: November 29, 2006 Revised: February 24, 2007

Accepted: March 6, 2007

Publication Date:
04 April 2007 (online)

Preview

Abstract

Resveratrol, a polyphenolic compound found in grapes and other fruits, is thought to contribute to the cardioprotective effect of red wine. While resveratrol exhibits some antiplatelet effect in vitro, the concentrations needed are much higher than those in plasma after consumption of red wine. In the present study, we investigate if resveratrol is able to potentiate the effect of endogenous antiplatelet substances - prostaglandin (PG) I2 and PGE1. In human platelet suspension resveratrol at relatively low concentrations (2 or 5 μM), which did not affect platelet function, significantly enhanced the inhibitory activity of PGs on platelet aggregation caused by collagen. The mechanisms underlying this effect may be associated with the inhibition of protein kinase C activation and protein tyrosine phosphorylation, but not with cyclic nucleotide levels and intracellular calcium mobilization in platelets. Our results might provide a possible explanation for the in vivo antiplatelet effect of resveratrol despite the poor bioavailability and the weak in vitro activity.

References

Prof. Dr. Chin-Chung Wu or
Prof. Dr. Yang-Chang Wu

Graduate Institute of Nature Products

Kaohsiung Medical University

100 Shih-Chuan First Road

Kaohsiung City 807

Taiwan

Republic of China

Phone: +886-7-3121101 ext.2669

Email: ccwu@kmu.edu.tw