title: Inhibitory effect of sodium salicylate on ADP-induced platelet aggregation and on 45Ca2+ uptake into platelets.
abstract: The effects of sodium salicylate (SS) on ADP-induced platelet aggregation and on a metabolism of calcium in platelets were studied, using gel-filtrated platelets (GFP). SS inhibited dose-responsively ADP-induced aggregation in the presence of fibrinogen and Ca2+. It was found that extracellular 45Ca2+ was rapidly taken up into platelets after stimulation by ADP, while SS significantly inhibited this activity. On the other hand, SS had no effect on platelet aggregation induced by 0.11-1.0 microM ionophore A23187. Therefore, it was found that the inhibitory effect of SS on ADP-induced platelet aggregation may be due to the inhibition of the active influx of extracellular Ca2+ into platelets during aggregation.
mesh_terms: D000244:Adenosine Diphosphate / Q000494:pharmacology; D000818:Animals; D001693:Biological Transport, Active / Q000187:drug effects; D001792:Blood Platelets / Q000187:drug effects* / Q000378:metabolism; D000001:Calcimycin / Q000494:pharmacology; D002118:Calcium / Q000097:blood; D000242:Cyclic AMP / Q000097:blood; D066298:In Vitro Techniques; D008297:Male; D051379:Mice; D010974:Platelet Aggregation / Q000187:drug effects; D012980:Sodium Salicylate / Q000494:pharmacology*
chemical_list: D000001:Calcimycin; D000244:Adenosine Diphosphate; D000242:Cyclic AMP; D002118:Calcium; D012980:Sodium Salicylate