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Individual Platelet Adhesion Assay: Measuring Platelet Function and Antiplatelet Therapies in Whole Blood via Digital Quantification of Cell Adhesion
Royal Coll Surgeons Ireland, Ireland .
Dublin City University, Ireland .
Dublin City University, Ireland .
Royal Coll Surgeons Ireland, Ireland .
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2013 (English)In: Analytical Chemistry, ISSN 0003-2700, E-ISSN 1520-6882, Vol. 85, no 13, 6497-6504 p.Article in journal (Refereed) Published
Abstract [en]

Widespread monitoring of platelet function and the effect of antiplatelet drugs will improve outcomes in cardiovascular patients, but platelet function testing is not routine in clinical practice. We report a rapid, accurate methodology to quantify platelet-protein interactions: a microarray of contact-printed 6-mu m fibrinogen dots on a transparent substrate binds platelets from whole blood, one platelet per dot. The fractional occupancy of an array of fibrinogen dots after a predefined incubation time quantitatively assays platelet adhesion to the protein matrix. We demonstrate this technique by measurement of platelet adhesion to fibrinogen as a means to quantify the effect of the P2Y(12) and alpha IIb beta 3 receptor inhibitors cangrelor and abciximab, respectively, both in vitro-by incubating the drug with a freshly drawn blood sample-and in blood from patients treated with antiplatelet agents. The effects of single- and dual-antiplatelet therapy are also assessed. Results from this platelet-binding assay are well correlated with standard techniques including flow cytometry and light transmission aggregometry. This assay technology, readily integrated with microfluidic platforms, is generally applicable to the assay of cell-protein interactions and promises more effective, rapid assay of drug effects in cardiovascular disease patients.

Place, publisher, year, edition, pages
American Chemical Society , 2013. Vol. 85, no 13, 6497-6504 p.
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-96988DOI: 10.1021/ac401076sISI: 000321521700050OAI: diva2:644935

Funding Agencies|Science Foundation Ireland (SFI)|10/CE/B1821|National Biophotonics Imaging Platform Ireland (NBIP)||

Available from: 2013-09-02 Created: 2013-09-02 Last updated: 2015-03-13

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Ramstrom, Sofia
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Division of Microbiology and Molecular MedicineFaculty of Health Sciences
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