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Updated: Sep 27, 2026

Ferric Chloride-induced Murine Thrombosis Models
Published on: September 5, 2016
Effect of sodium arachidonate on thrombin generation through platelet activation--inhibitory effect of aspirin
R Altman1, A Scazziota, J Rouvier
1Centro de Trombosis de Buenos Aires, Argentina. draltman@arnet.com.ar
Background:
Sodium arachidonate was used in this study to determine its capacity to generate thrombin through platelet activation. Whether aspirin prevent this effect was also investigated.
Methods And Results:
Seventeen healthy volunteers without and after 160 mg/day aspirin intake for 3-5 days were studied. Lag-time and TG at basal condition and after platelet stimulation by sodium arachidonate (AA) were measured in normal non-aspirinated as well as "in vivo" aspirinated platelet rich plasma. (PRP). The lag-time was statistically significant shorter in non-aspirinated PRP activated with AA compared with non-activated PRP. This effect was inhibited by aspirin. In non-aspirinated PRP, there was an increase of TG at 4 and 6 min. incubation when platelets were activated with AA but the difference disappeared after 8 min. incubation, (84 +/- 71; 148 +/- 58 and 142 +/- 92 nmol/L respectively) compared with non-aspirinated. non-activated platelets (16 +/- 23; 55 +/- 56 and 111 +/- 76 nmol/L at 4,6 and 8 min, p < 0.0001, p < 0.0001 and p = 0.292, respectively). The AUCo-->22 min were 520.6 +/- 545.5 in non-aspirinated, non-stimulated PRP and 808.9 +/- 617, in non-aspirinated PRP activated with sodium arachidonate (p = 0.014). Aspirin administered in vivo produced a decrease of TG in PRP activated with AA.
Conclusion:
Platelet activated by AA trigged TG. This effect was inhibited by aspirin and could be an additional beneficial effect of aspirin in the prevention of thrombosis.
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