著者
TAKENAGA MITSUKO HIRAI AIZAN TERANO TAKASHI TAMURA YASUSHI KITAGAWA HARUO YOSHIDA SHO
出版者
公益社団法人日本薬学会
雑誌
Journal of pharmacobio-dynamics (ISSN:0386846X)
巻号頁・発行日
vol.10, no.5, pp.201-208, 1987-05
被引用文献数
5 22

The in vitro effect of cinnamic aldehyde, a main component of Cinnamomi Cortex, on platelet aggregation and arachidonic acid (AA) metabolism in human platelets was studied. Cinnamic aldehyde reduced platelet aggregation of both platelet rich plasma and washed platelets, dose-dependently. This compound also decreased the formation of the metabolites of AA such as thromboxane B_2 (TXB_2), 12-hydroxy heptadecatrienoic acid and 12-hydroxyeicosatetraenoic acid in collagen-stimulated washed platelets. The conversion of exogenous [^<14>C] AA to cyclooxygenase metabolites or 12-lipoxygenase metabolite was not altered significantly by the addition of cinnamic aldehyde. On the other hand, collagen-induced released of [^<14>C] AA and its metabolites from washed platelets prelabeled with [^<14>C] AA was markedly reduced by the addition of cinnamic aldehyde. These results suggested that cinnamic aldehyde suppressed the release of AA from platelet membrane phospholipids and then reduced the formation of thromboxane A_2. This inhibitory effect of cinnamic aldehyde on AA release and TXB_2 formation may contribute to reduced platelet aggregation.

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