Aglafoline inhibits in a concentration-dependent manner the aggregation and ATP release reaction induced in washed rabbit platelets by PAF (platelet-activatingfactor). The IC50 values of Aglafoline on PAF (3.6 nM)-induced platelet aggregation were about 50 μM.
(+)-Guaiacin is a compound isolated from the bark of Machilus wangchiana Chun. It shows potent in vitro activities against the release of β-glucuronidase in rat polymorphonuclear leukocytes (PMNs) induced by platelet-activatingfactor (PAF).