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. 1991 Dec 1;88(23):10624–10628. doi: 10.1073/pnas.88.23.10624

Frequency and severity of cyclic flow alternations and platelet aggregation predict the severity of neointimal proliferation following experimental coronary stenosis and endothelial injury.

J T Willerson 1, S K Yao 1, J McNatt 1, C R Benedict 1, H V Anderson 1, P Golino 1, S S Murphree 1, L M Buja 1
PMCID: PMC52982  PMID: 1961728

Abstract

The role of recurrent platelet aggregation in the development of neointimal proliferation of coronary arteries was explored in this study, and the hypothesis was evaluated that recurrent platelet aggregation and the consequent frequency and severity of cyclic coronary blood flow variations are important pathophysiologic factors in the subsequent development of neointimal proliferation. In 24 chronically instrumented dogs, variable degrees of coronary artery neointimal proliferation were observed 3 weeks after mechanical injury of the arterial endothelium and the placement of an external coronary artery constrictor. The severity of neointimal proliferation at 21 days was closely related to the frequency and severity of cyclic coronary blood flow variations during the initial 7 days after instrumentation of the animals, itself a manifestation of recurrent platelet aggregation and dislodgement. Pharmacological therapy with a dual thromboxane A2 synthetase inhibitor and receptor antagonist and with a serotonin S2 receptor antagonist frequently was successful in abolishing cyclic blood flow variations and in retarding neointimal proliferation.

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Selected References

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