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British Journal of Experimental Pathology logoLink to British Journal of Experimental Pathology
. 1988 Aug;69(4):473–486.

Sequence of cellular responses in rabbit aortas following one and two injuries with a balloon catheter.

L Jørgensen 1, A G Grøthe 1, H M Groves 1, R L Kinlough-Rathbone 1, M Richardson 1, J F Mustard 1
PMCID: PMC2013240  PMID: 3179197

Abstract

In order to further elucidate the pathogenesis of intimal proliferation and increased thrombogenesis following repeated arterial injuries we studied the sequence of the cellular changes following two injuries of rabbit aortas with a balloon catheter. Following the first injury, the de-endothelialized surface was covered by a platelet monolayer. Polymorphonuclear leucocytes adhered to the inner surface of this monolayer and did not appear to penetrate the vessel wall. By 4 to 7 days, areas of neointima had formed. Within seconds after the reinjury at 7 days after the de-endothelialization small platelet aggregates formed on injured neointimal smooth muscle cells. Within I min platelet thrombi and fibrin strands formed. At 30 min most of the platelet thrombi had become fibrin-rich. Polymorphonuclear leucocytes had accumulated and many had begun to penetrate into the neointimal tissue. The number and extent of penetration of leucocytes into the inner parts of the arterial wall increased with time. Four days after the injury the neointimal cushions were restored and thickened. Both following the first and second injury the formation of neointimal cushions was accompanied by a change in the polarity of the inner layers of medial smooth muscle cells, some of which appeared to have migrated into the neointima.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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