Comparison of patient intake of ticagrelor, prasugrel, or clopidogrel on restoring platelet function by donor platelets. Issue 6 (15th January 2015)

• Record Type: Journal Article
• Authors: Scharbert, Gisela; Wetzel, Leonore; Schrottmaier, Waltraud C.; Kral, Julia B.; Weber, Thomas; Assinger, Alice
• Is Part Of: Transfusion. Volume 55:Issue 6(2015)
• Page Start: 1320
• Page End: 1326
• Publication Date: 2015-01-15
• Subjects: Hematology -- Periodicals; Blood -- Transfusion -- Periodicals; Blood Group Antigens -- Periodicals; Blood Preservation -- Periodicals; Blood Transfusion -- Periodicals; 615
• DOI: 10.1111/trf.12977
• Languages: English
• ISSNs: 0041-1132

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="trf12977-sec-0001" sec-type="section"> <title>Background</title> <p>Bleeding complications are a common side effect in patients under dual antiplatelet (anti‐PLT) therapy. PLT transfusion provides a treatment option for these patients. However it is currently unclear if, and to what extent, P2Y<sub>12</sub> inhibitors influence PLT function of donor PLTs and if patients taking these medications are likely to benefit from PLT transfusions.</p> </sec> <sec id="trf12977-sec-0002" sec-type="section"> <title>Study Design and Methods</title> <p>We investigated the effect of blood and plasma of clopidogrel‐, prasugrel‐, and ticagrelor‐treated patients on PLT function of blood from healthy volunteers in flow cytometry, light transmission aggregometry, and multiple electrode aggregometry (MEA).</p> </sec> <sec id="trf12977-sec-0003" sec-type="section"> <title>Results</title> <p>Our results demonstrate that clopidogrel had no and prasugrel had only mild effects on donor PLT function, but the reversible P2Y<sub>12</sub> inhibitor ticagrelor completely abolished adenosine diphosphate‐mediated PLT activation in all assays tested. We further show that ticagrelor itself and not elevated adenosine concentrations in patient plasma were responsible for the observed effects. Moreover, we show that a modified MEA assay could provide a simple and rapid tool to allow determination of whether patients are likely to benefit from PLT transfusions.</p> </sec> <sec id="trf12977-sec-0004" sec-type="section"> <title>Conclusion</title> <p>Our results provide novel insights into potential differences between the P2Y<sub>12</sub> inhibitors on donor PLT function in an in vitro setting, which may provide implications for future PLT transfusion strategies in these patients.</p> </sec> </abstract>