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Updated: Apr 5, 2026
A Human Ex Vivo Atherosclerotic Plaque Model to Study Lesion Biology
Published on: May 6, 2014
Inflammation and plaque vulnerability
G K Hansson1, P Libby2, I Tabas3
1Department of Medicine and Center for Molecular Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
Insights
Atherosclerosis is a chronic inflammatory disease leading to plaque buildup and potential thrombus formation. Understanding plaque vulnerability and endothelial erosion is key to preventing life-threatening ischemic events.
Area of Science:
- Cardiovascular Biology
- Inflammation Research
- Translational Medicine
Background:
- Atherosclerosis is a chronic inflammatory disease characterized by arterial plaque formation.
- Atherothrombosis, a complication, arises from plaque rupture or endothelial erosion, leading to potentially fatal ischemic events.
- Plaque vulnerability is linked to reduced collagen content and mechanical instability.
Purpose of the Study:
- To review the molecular mechanisms underlying plaque vulnerability in atherosclerosis.
- To discuss the development of atherothrombosis following plaque surface damage.
- To explore the roles of metabolic and immune insults in endothelial erosion.
Main Methods:
- Literature review of molecular mechanisms in atherosclerosis.
- Analysis of factors contributing to plaque rupture and endothelial erosion.
- Synthesis of current understanding on atherothrombosis development.
Main Results:
- Plaque rupture is associated with decreased collagen cap strength, increasing vulnerability.
- Endothelial erosion can be triggered by metabolic disturbances or immune system insults.
- Both mechanisms can lead to thrombus formation and subsequent ischemia.
Conclusions:
- Molecular mechanisms of plaque vulnerability are critical in atherothrombosis.
- Targeting plaque stability and endothelial integrity may offer therapeutic strategies.
- Further research into metabolic and immune pathways is needed to prevent atherothrombosis.
Abstract:
Atherosclerosis is a maladaptive, nonresolving chronic inflammatory disease that occurs at sites of blood flow disturbance. The disease usually remains silent until a breakdown of integrity at the arterial surface triggers the formation of a thrombus. By occluding the lumen, the thrombus or emboli detaching from it elicits ischaemic symptoms that may be life-threatening. Two types of surface damage can cause atherothrombosis: plaque rupture and endothelial erosion. Plaque rupture is thought to be caused by loss of mechanical stability, often due to reduced tensile strength of the collagen cap surrounding the plaque. Therefore, plaques with reduced collagen content are thought to be more vulnerable than those with a thick collagen cap. Endothelial erosion, on the other hand, may occur after injurious insults to the endothelium instigated by metabolic disturbance or immune insults. This review discusses the molecular mechanisms involved in plaque vulnerability and the development of atherothrombosis.
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