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Low-dose enteric-coated aspirin does not inhibit thromboxane B2 and prostaglandin E2: data-derived hypothesis formulation

机译:低剂量肠溶阿司匹林不抑制血栓烷B2和前列腺素E2:数据来源的假设表述

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Background: All usual daily doses of plain aspirin inhibit thromboxane B2 (TXB_2) as well as prostaglandin E2 (PGE_2). The role of 81-mg enteric-coated aspirin (ECA) is controversial. Method: In a randomized, double-blind trial, 37 patients (25 men and 12 women) with chronic stable coronary disease taking ECA 81 mg at baseline were assigned to plain aspirin 81, 162.5, 325, 650 or 1300 mg daily for 12 weeks. At baseline and 12 weeks, blood was tested for TXB_2 and PGE_2. Results: All doses of plain aspirin produced virtually identical reductions in TXB_2 and PGE_2. For all doses combined, the mean ratio of the 12-week to baseline value was 0.03 for TXB_2 (p < 0.001) and 0.63 for PGE_2 (p < 0.001). Conclusion: These data indicate that ECA 81 mg daily does not inhibit TXB_2 and PGE_2, markers of acute and systemic responses to aspirin. Randomized trials designed a priori to test this hypothesis are necessary.
机译:背景:平常服用阿司匹林的所有日常剂量均能抑制血栓烷B2(TXB_2)和前列腺素E2(PGE_2)。 81 mg肠溶阿司匹林(ECA)的作用引起争议。方法:在一项随机,双盲试验中,将37例慢性稳定型冠心病患者(25例男性和12例女性)在基线时服用ECA 81 mg,每天服用普通阿司匹林81、162.5、325、650或1300 mg,持续12周。在基线和第12周,对血液进行TXB_2和PGE_2检测。结果:所有剂量的普通阿司匹林产生的TXB_2和PGE_2减少量几乎相同。对于所有组合剂量,TXB_2的12周与基线值的平均比率为0.03(p <0.001),而PGE_2为0.63(p <0.001)。结论:这些数据表明,每天ECA 81 mg不能抑制TXB_2和PGE_2,这是对阿司匹林的急性和全身反应的标志。设计用于验证该假设的先验随机试验是必要的。

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