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Effects of catechins on human blood platelet aggregation and lipid peroxidation

Effects of catechins on human blood platelet aggregation and lipid peroxidation The activity of catechins was studied for inhibitory activity in human blood platelets. Platelet aggregation and peroxidation were evaluated in platelet rich plasma (PRP) obtained from samples of healthy volunteers. Human blood platelets were submitted to stimulation with 300 µM arachidonic acid, 3 µM adenosine diphospate (ADP) and 6 µM epinephrine. Treatment with (200 µg/mL) catechin or epicatechin was sufficient to exhibit a potent inhibitory effect of the three agents. The inhibitory effect was dose dependent at concentrations of 20–200 µg/mL. Using malondialdehyde (MDA) as an index of total lipid peroxidation capacity, decreased production of MDA of the platelets treated with catechin or epicatechin after stimulation by arachidonic acid was observed. These findings suggest that catechins protect platelets from peroxidative stress and their aggregation. Copyright © 1999 John Wiley & Sons, Ltd. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Phytotherapy Research Wiley

Effects of catechins on human blood platelet aggregation and lipid peroxidation

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References (29)

Publisher
Wiley
Copyright
Copyright © 1999 John Wiley & Sons, Ltd.
ISSN
0951-418X
eISSN
1099-1573
DOI
10.1002/(SICI)1099-1573(199911)13:7<597::AID-PTR512>3.0.CO;2-Z
Publisher site
See Article on Publisher Site

Abstract

The activity of catechins was studied for inhibitory activity in human blood platelets. Platelet aggregation and peroxidation were evaluated in platelet rich plasma (PRP) obtained from samples of healthy volunteers. Human blood platelets were submitted to stimulation with 300 µM arachidonic acid, 3 µM adenosine diphospate (ADP) and 6 µM epinephrine. Treatment with (200 µg/mL) catechin or epicatechin was sufficient to exhibit a potent inhibitory effect of the three agents. The inhibitory effect was dose dependent at concentrations of 20–200 µg/mL. Using malondialdehyde (MDA) as an index of total lipid peroxidation capacity, decreased production of MDA of the platelets treated with catechin or epicatechin after stimulation by arachidonic acid was observed. These findings suggest that catechins protect platelets from peroxidative stress and their aggregation. Copyright © 1999 John Wiley & Sons, Ltd.

Journal

Phytotherapy ResearchWiley

Published: Nov 1, 1999

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