PMID: 8591748Dec 1, 1995Paper

Effect of acetylsalicylic acid on platelet aggregation and capillary bleeding in healthy cats

DTW. Deutsche tierärztliche Wochenschrift
S HartI Nolte

Abstract

The influence of acetylsalicylic acid (ASA) in vitro and in vivo on several parameters of the hemostatic system was evaluated in healthy cats. The aggregation response of cat platelets in vitro was not influenced by 10 micrograms ASA/ml plasma, whereas ASA concentrations of 35, 70, 100 micrograms/ml and of 1 mg/ml consistently inhibited the platelet aggregation induced by 0.1 (n = 4 cats) and 0.25 micrograms collagen/ml (n = 6 cats). The aggregation response to ADP and thrombin was partially (n = 2) or completely (n = 8) inhibited by an ASA concentration of 5 mg/ml. Administration of ASA at a dosage of 10 and 25 mg/kg BW orally and intravenously yielded a plasma concentration of salicylic acid of 30-42 micrograms/ml (10 mg/kg BW) and 50-70 micrograms/ml (25 mg/kg BW). All the dosages of ASA produced an inconsistent inhibition of the collagen-induced platelet aggregation (1/5 and 2/5 for the respective groups), whereas the response to ADP and thrombin was not altered. Capillary bleeding time was not significantly altered after the ASA administration. Platelet count and screening tests were not influenced by ASA application. According to the results of this study, ASA as a platelet aggregation inhibitor is not useful for the prop...Continue Reading

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