Pathophysiological mechanisms of carotid plaque vulnerability: Impact on ischemic stroke

Jaroslav Pelisek, Hans Henning Eckstein, Alma Zernecke

Research output: Contribution to journalReview articlepeer-review

68 Scopus citations

Abstract

Stroke is among the major causes of mortality and disabilities in the world. About 80 % of all strokes in the anterior circulation are ischemic and up to 20 % of all ischemic strokes are caused by extracranial atherosclerotic carotid artery stenosis. The prevalence of a cervical internal carotid artery stenosis increases with age and can be found in 6.9 % of the elderly population (>65 years). Atherosclerotic changes of the carotid vessel wall can lead to plaque vulnerability and may result in arterio-arterial embolism, which frequently underlie carotid-related cerebrovascular ischemic events. Carotid atherosclerosis is characterised by inflammation, extensive degradation of extracellular matrix components, neovascularization, and as recently recognised is also affected by epigenetic changes. These factors accelerate the progression of atherosclerosis towards vulnerable plaques and increase the risk of ischemic stroke. In this review, the main pathophysiological mechanisms leading to rupture-prone carotid artery plaques and successive ischemic stroke are considered. It is important to recognise the heterogeneity of atherosclerosis and that various pathophysiological processes dissected in this review are not acting individually, but rather in a complementary manner. The identification and careful integration of all relevant factors will be required for the development of future diagnostic and therapeutic strategies.

Original languageEnglish
Pages (from-to)431-442
Number of pages12
JournalArchivum Immunologiae et Therapiae Experimentalis
Volume60
Issue number6
DOIs
StatePublished - Dec 2012
Externally publishedYes

Keywords

  • Carotid atherosclerosis
  • Ischemic stroke
  • Vulnerable carotid plaque

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