title: Thrombus induction by endogenic paf-acether and its inhibition by Ginkgo Biloba extracts in the guinea pig.
abstract: The anti-thrombotic effects of specific paf-acether antagonist BN 52021 were compared to the effects of Ginkgo Biloba extracts A, B, (A + B), and C. Local superfusion of BN 52021 over an experimentally injured arterial segment embolizes an existent paf-acether induced platelet thrombus. When applied before paf-acether, BN 52021 prevents local thromboformation in this model. Applied intravenously, BN 52021 reduces local thromboformation in a significant way. As compared to this BN 52021 standard, only Ginkgo Biloba B and the (A + B)-mixture present major thromboreductive activity.
mesh_terms: D000818:Animals; D004224:Diterpenes; D046934:Ginkgolides; D006168:Guinea Pigs; D007783:Lactones; D008297:Male; D010936:Plant Extracts / Q000494:pharmacology*; D010946:Plants, Medicinal; D010972:Platelet Activating Factor; D013927:Thrombosis / Q000139:chemically induced / Q000517:prevention & control*
chemical_list: D004224:Diterpenes; D046934:Ginkgolides; D007783:Lactones; D010936:Plant Extracts; D010972:Platelet Activating Factor; C045856:ginkgolide B