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- W1570842275 abstract "Summary. Background and aims: In the present study, we describe a newly developed microchip-based analytical system to evaluate white thrombus formation (WTF). Efficacies of various antithrombotic agents were compared under different flow conditions. Methods: Whole blood containing corn trypsin inhibitor was perfused over a microchip coated with collagen and tissue thromboplastin at the lower and higher shear rates of 240 and 600 s−1, and WTF process inside the microchip was quantified by monitoring a flow pressure. Parameters of T10 (time to 10 kPa), T10–80 (time from 10 to 80 kPa) and OT (occlusion time; time to 80 kPa) were used to evaluate the onset and the growth rate of WTF, and the capillary occlusion, respectively. Results: After perfusion was started, white thrombus composed of activated platelets and fibrin was formed on the coated surface. Thrombus gradually increased in size and eventually occluded the capillary. Among anticoagulants, heparin (0.5–1.0 U mL−1) potently prolonged T10 at both shear rates, whereas low molecular weight heparin (1.0–2.0 IU mL−1) inhibited the growth of WTF at the lower shear rate. Among antiplatelet agents, abciximab (1–2 μg mL−1) significantly reduced the size and number of thrombi, which was additively enhanced in the presence of heparin (0.5 U mL−1). OS-1 (specific GPIbα-antagonist) prevented the complete capillary occlusion. Conclusion: The novel monitoring system of WTF may be useful in preclinical and clinical evaluations of different types of antithrombotic strategies, and their effects in combination." @default.
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- W1570842275 date "2011-10-01" @default.
- W1570842275 modified "2023-10-06" @default.
- W1570842275 title "A novel automated microchip flow‐chamber system to quantitatively evaluate thrombus formation and antithrombotic agents under blood flow conditions" @default.
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- W1570842275 doi "https://doi.org/10.1111/j.1538-7836.2011.04464.x" @default.
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