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Thromb Haemost 1991; 65(04): 411-414
DOI: 10.1055/s-0038-1648162
Original Article
Schattauer GmbH Stuttgart

Effects of Vitamin E Administration on Platelet Function and Serum Lipid Peroxides in DOCA-Salt Hypertensive Rats

Keizo Umegaki
Division of Applied Food Research, The National Institute of Health and Nutrition, Tokyo, Japan
,
Hiromi Saegusa
Division of Applied Food Research, The National Institute of Health and Nutrition, Tokyo, Japan
,
Masato Kurokawa
Division of Applied Food Research, The National Institute of Health and Nutrition, Tokyo, Japan
,
Tomio Ichikawa
Division of Applied Food Research, The National Institute of Health and Nutrition, Tokyo, Japan
› Author Affiliations
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Publication History

Received: 10 July 1990

Accepted after revision 22 November 1990

Publication Date:
02 July 2018 (online)

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Summary

Effects of vitamin E on platelet function and serum lipid peroxide levels were investigated in DOCA-salt hypertensive rats. In the hypertensive rats, ADP- and collagen-induced platelet aggregation in whole blood were markedly attenuated and accompanied by a reduction of serotonin content as compared with the normotensive controls. These facts indicated the appearance of exhausted platelets, which have already been activated in vivo, due to the hypertension. Platelet vitamin E levels were decreased by 50%, while serum lipid peroxide levels were increased 3.6-fold in the hypertensive rats. Vitamin E administration (10 times the dietary intake) during the experimental periods did not influence either the aggregability or the serotonin content of platelets from the hypertensive rats. However, vitamin E administration significantly prevented the elevation of serum tipid peroxides due to the hypertension. These results suggest that vitamin E administration has little effect on platelet activation in vivo due to DOCA-salt hypertension.

 

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