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In Vitro Inhibitory Effect of SR 27417, a Potent Platelet-Activating Factor (PAF) Receptor Antagonist, on the PAF-induced Bovine Platelet Aggregation

In Vitro Inhibitory Effect of SR 27417, a Potent Platelet-Activating Factor (PAF) Receptor Antagonist, on the PAF-induced Bovine Platelet Aggregation

M Bastos da Silva, A Delaunois, P Gustin, J M Godeau, P Lekeux

Vet Res. Mar-Apr 2000;31(2):267-72.

PMID: 10779205

Abstract:

The in vitro inhibitory effect of SR 27417, an antagonist of the platelet-activating factor (PAF) receptor, on PAF-induced platelet aggregation was studied in blood collected from seven healthy Friesien calves. Inhibitory effects of SR 27417 were determined at thirteen different concentrations (0.1-400 nM) by using the dose-response curves of PAF on calf platelet aggregation. In the presence of SR 27417, the maximal slopes of aggregation (%/min) induced by low and high concentrations of PAF were significantly different from the control values obtained without an antagonist at p < or = 0.05 and p < or = 0.01 respectively. In vitro PAF-induced calf platelet aggregation was dose-dependently inhibited by SR 27417. The drug inhibited PAF-induced platelet aggregation in a competitive reversible manner (pA2 = 10.46 +/- 2.36 mol x L(-1)). In conclusion, the results of our study showed that addition of SR 27417 to bovine platelet in vitro inhibits PAF-induced platelet aggregation.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP136468365	SR 27417		136468-36-5	Price

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