Models of Aortic Valve Calcification
Abstract
Aortic valve stenosis is a complex inflammatory process, akin to arterial atherosclerosis, involving lymphocytic infiltrates, macrophages, foam cells, endothelial activation and dysfunction, increased cellularity and extracellular matrix deposition, and lipoprotein accumulation. A clonal population of aortic valve myofibroblasts spontaneously undergoes phenotypic transdifferentiation into osteoblast-like cells and forms calcific nodules in cell culture. Animal models complement these cell culture models by providing in vivo systems in which to study the complex molecular and cellular interactions that cause aortic valve disease in the native hemodynamic and biochemical environment. Whereas some species, such as swine, can develop spontaneous vascular and valvular atherosclerotic lesions, others, such as rabbits and mice, have not been shown to develop lesions naturally and require an inciting factor, such as hypercholesterolemia. In this article, we review the published cell culture and animal models available to study calcific aortic valve disease.
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Article first published: September 2007
Issue published: September 2007
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This article was published in Journal of Investigative Medicine.
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