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Arteriosclerosis, Thrombosis, and Vascular Biology
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Arteriosclerosis, Thrombosis, and Vascular Biology. 1982;2:458-466

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Arteriosclerosis, Vol 2, 458-466, Copyright © 1982 by American Heart Association

ARTICLES

Platelet survival and thrombosis

PD Winocour, M Cattaneo, D Somers, M Richardson, RL Kinlough-Rathbone and JF Mustard

This study examined the relation among platelet survival, thrombosis, and repeated vessel injury. With the use of 51Cr-labeled platelets, indwelling aortic catheters were shown to reduce platelet survival in rabbits and rats. In rabbits, thrombi were observed mainly at the aortic bifurcation and at the tip of the catheter. The amount of thrombus that formed in rabbits with short and long catheters was similar, but platelet survival was shortened only in rabbits with short and long catheters was similar, but platelet survival was shortened only in rabbits with long indwelling aortic catheters. In rats, the aortic catheters did not cause thrombosis, and platelet survival was shortened significantly in rats with both short and long catheters, but was more pronounced in animals with longer catheters. In both rabbits and rats, long aortic catheters caused more extensive vessel injury than the short catheters and this was associated with greater platelet interaction with the vessel wall. Platelet survival cannot be used as an estimate of thrombus formation, but may reflect the extent and frequency of vessel wall injury. thus, shortened platelet survival may represent increased platelet interaction with the damaged arterial wall and increased platelet consumption.


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