title: The effect of AD6 (8-monochloro-3-beta-diethylamino-ethyl-4-methyl-7-ethoxy- carbonylmethoxycoumarin) on washed human platelet aggregation induced by platelet activating factor (PAF) and epinephrine.
abstract: The effect of AD6 (8-monochloro-3-beta-diethylamino-ethyl-4-methyl-7- ethoxycarbonylmethoxycoumarin) was studied in vitro on washed human platelet aggregation and beta-thromboglobulin (beta TG) release induced by PAF alone or in combination with epinephrine. AD6 caused concentration-dependent inhibition of aggregation and beta TG release. Acetylsalicylic acid and the ADP scavenger apyrase were ineffective on the same parameters, while the specific PAF antagonist CV 3988, the Ca2+ antagonist diltiazem and the cyclo-oxygenase-lipoxygenase inhibitors nordihydroguaiaretic acid and BW 755C inhibited aggregation. The results indicate that AD6 is an inhibitor of platelet aggregation in vitro with a mode of action different from cyclo-oxygenase blockade.
mesh_terms: D015772:4,5-Dihydro-1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-3-amine; D001241:Aspirin / Q000494:pharmacology; D001792:Blood Platelets / Q000378:metabolism; D002866:Chromonar / Q000031:analogs & derivatives / Q000494:pharmacology*; D003374:Coumarins / Q000494:pharmacology*; D004347:Drug Interactions; D004837:Epinephrine / Q000037:antagonists & inhibitors*; D006801:Humans; D066298:In Vitro Techniques; D009637:Masoprocol / Q000494:pharmacology; D010972:Platelet Activating Factor / Q000037:antagonists & inhibitors*; D010974:Platelet Aggregation / Q000187:drug effects*; D011720:Pyrazoles / Q000494:pharmacology; D001620:beta-Thromboglobulin / Q000378:metabolism
chemical_list: D003374:Coumarins; D010972:Platelet Activating Factor; D011720:Pyrazoles; D001620:beta-Thromboglobulin; D015772:4,5-Dihydro-1-(3-(trifluoromethyl)phenyl)-1H-pyrazol-3-amine; D009637:Masoprocol; C025945:cloricromen; D002866:Chromonar; D001241:Aspirin; D004837:Epinephrine