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Effect of prostacyclin on platelet adhesion to rabbit arterial subendothelium


, : Effect of prostacyclin on platelet adhesion to rabbit arterial subendothelium. Prostaglandins 16(1): 17-22

The effect of prostacyclin on platelet aggregation and adhesion was investigated in everted pieces of rabbit abdominal aorta, from which the endothelium had previously been removed. Citrated human blood, to which different concentrations of prostacyclin (0.1-100 ng/ml) were added, was perfused through the vessels, after which sections were examined and evaluated by light microscopy. Prostacyclin inhibited thrombus formation at concentrations greater than 0.1 ng/ml, whereas 20 ng/ml were required to reduce the amount of adhesion to the subendothelial surface. Prostacyclin prevents thrombus formation at much lower concentrations than are needed to inhibit platelet-vessel wall interaction.

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