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- W2761271036 abstract "Background: There is a dispute about the potential effects of radiographic contrast media (CM) on thrombogenesis. The nonionic CM iohexol triggers platelet β-thromboglobulin (β-TG) secretion, and thus may activate the platelets and promote thrombosis. We addressed this topic in a study employing a human model of arterial thrombus formation in the presence of aspirin and heparin. This was a follow-up to our initial study (on thrombus formation in native blood) which did not include antithrombotic drugs. The nonionic CM iohexol (monomer) and iodixanol (dimer) and the ionic CM ioxaglate (dimer) were compared. Methods and Results: Thrombus formation was triggered by a surface rich in either collagen or tissue factor, positioned in a parallel-plate perfusion chamber device at an arterial wall shear rate of 2600 s −1 . Blood from healthy volunteers, following ingestion of 1 g aspirin, was mixed with 40 vol% CM and 2.0 IU/ml heparin and passed over the surfaces. Thrombus formation in the presence of either CM showed no difference, despite the fact that iohexol triggered a pronounced platelet β-TG secretion; iodixanol or ioxaglate were virtually inert. Conclusion: There was no association between iohexol-induced β-TG secretion and thrombus formation on collagen (platelet-driven) or on tissue factor (thrombin-driven) in the presence of a standard antithrombotic regimen of aspirin and heparin as used in the clinic. The notion of a thrombotic risk due to platelet activation by iohexol was thus not substantiated by this study." @default.
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- W2761271036 date "1998-07-01" @default.
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- W2761271036 title "Iohexol, platelet activation and thrombosis" @default.
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- W2761271036 doi "https://doi.org/10.1080/02841859809172444" @default.
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