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Cardiovascular Research 1999 41(2):369-375; doi:10.1016/S0008-6363(98)00308-3
© 1999 by European Society of Cardiology
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Copyright © 1999, European Society of Cardiology

Mechanisms of plaque rupture

mechanical and biologic interactions

Luis H Arroyo and Richard T Lee*

Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA

* Corresponding author. Tel.: +1-617-732-7146; fax: +1-617-277-4981; e-mail: rtlee@bics.bwh.harvard.edu

Atherosclerotic vascular disease is the most common cause of morbidity and mortality in developed countries, and the world-wide importance of acute vascular syndromes is increasing. Acute events are usually triggered by the development of plaque disruption and subsequent thrombus formation. Histological studies have established specific structural features common among unstable plaques. The plaque has to bear remarkably increased mechanical stress at particular regions, and weakening of the extracellular matrix at these sites leads to fibrous cap rupture. The biologic factors that cause weakening of the plaque at these high stress locations are now emerging. Understanding the interplay of plaque architecture, mechanical properties and matrix biology is critical in the future development of therapies to stabilize lesions.

KEYWORDS Collagen; Mechanical stress; Metalloproteinases; Unstable plaque


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