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Plaque Rupture and Thrombosis: the Value of the Atherosclerotic Rabbit Model in Defining the Mechanism

An Erratum to this article was published on 28 June 2016

Abstract

Persistent inflammation and mechanical injury associated with cholesterol crystal accretion within atherosclerotic plaques typically precedes plaque disruption (rupture and/or erosion) and thrombosis—often the terminal events of atherosclerotic cardiovascular disease. To elucidate the mechanisms of these events, the atherosclerotic rabbit model provides a unique and powerful tool that facilitates studies of atherogenesis starting with plaque buildup to eventual disruption. Examination of human coronary arteries obtained from patients who died with myocardial infarction demonstrates evidence of cholesterol crystals perforating the plaque cap and intimal surface of the arterial wall that can lead to rupture. These observations were made possible by omitting ethanol, an avid lipid solvent, from the tissue processing steps. Importantly, the atherosclerotic rabbit model exhibits a similar pathology of cholesterol crystals perforating the intimal surface as seen in ruptured human plaques. Local and systemic inflammatory responses in the model are also similar to those observed in humans. The strong parallel between the rabbit and human pathology validates the atherosclerotic rabbit model as a predictor of human pathophysiology of atherosclerosis. Thus, the atherosclerotic rabbit model can be used with confidence to evaluate diagnostic imaging and efficacy of novel anti-atherosclerotic therapy.

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Correspondence to George S. Abela.

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Oliver G. Abela, Fadi Alreefi, Negar Salehi, Imran Baig, and Abed Janoudi declare that they have no conflict of interest.

Chowdhury H. Ahsan declares personal fees from AstraZeneca, Amgen, and Boehringer Ingelheim for serving as a speaker.

George S. Abela declares personal and grant fees and nonfinancial support from Merck, as well as personal fees and non-financial support from Amgen, Daiichi Sankyo, and Kowa Pharmaceuticals.

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Abela, O.G., Ahsan, C.H., Alreefi, F. et al. Plaque Rupture and Thrombosis: the Value of the Atherosclerotic Rabbit Model in Defining the Mechanism. Curr Atheroscler Rep 18, 29 (2016). https://doi.org/10.1007/s11883-016-0587-0

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Keywords

  • Cholesterol crystals
  • Inflammation
  • Atherosclerosis
  • Plaque rupture
  • Rabbit model