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Effects of different doses, enteric-coated preparation of aspirin, and sex on urinary 11-dehydrothromboxane B2 in healthy volunteers.

Dharmasaroja PA, et al. Blood Coagul Fibrinolysis. 2010.

Abstract

There is scarce information about the effects of different doses and enteric-coated preparation of aspirin on platelet function, especially in Asian people, evaluated by the measurement of urinary 11-dehydrothromboxane B2 (dTXB2). The objective of the present study was to assess the effects of different doses, enteric-coated preparation of aspirin, sex and also the effects of timing of urine collection on urinary dTXB2 level in healthy volunteers. Thirty healthy volunteers were included. Each volunteer took three preparations of aspirin (aspirin 81 mg, enteric-coated aspirin 300 mg and aspirin 300 mg) for 7 days. Urine dTXB2 level was measured at baseline, day 3, and day 7 after taking each preparation of aspirin. There was no significant difference in the effects of different doses of aspirin (81 vs. 300 mg, 50.7 vs. 61.8 ng/mmol creatinine, P = 0.248), preparations (enteric-coated vs. nonenteric-coated aspirin, 61.8 vs. 67.9 ng/mmol creatinine, P = 0.527) and time of urine collection (day 3 vs. day 7, 51.7 vs. 49.9 ng/mmol creatinine, P = 0.448). Female volunteers showed a trend to have higher urinary dTXB2 than male volunteers at baseline and after taking aspirin. This study showed no significant difference in urinary dTXB2 level after taking different doses and enteric-coated preparation of aspirin in healthy volunteers.

PMID

20689403 [PubMed - indexed for MEDLINE]

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