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Updated: Jul 6, 2026
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A Rabbit Aortic Valve Stenosis Model Induced by Direct Balloon Injury
Published on: March 31, 2023
Identification of tissue factor in experimental aortic valve sclerosis
Sylvestre Marechaux1, Delphine Corseaux, Andre Vincentelli
1INSERM ERI, Centre Hospitalier Régional et Universitaire de Lille, Université de Lille II, France.
Summary
Aortic valve sclerosis lesions in rabbits showed atherosclerosis characteristics, including tissue factor (TF) expression. This finding strengthens the link between atherosclerosis and aortic valve sclerosis.
Area of Science:
- Cardiovascular Research
- Pathology
- Biochemistry
Background:
- Aortic valve sclerosis (AVS) shares similarities with atherosclerosis.
- Tissue factor (TF) is key in atherosclerosis thrombogenicity.
- Valvular TF expression in AVS models is not well understood.
Purpose of the Study:
- To investigate valvular tissue factor (TF) expression in experimental aortic valve sclerosis (AVS).
- To analyze other atherosclerosis components within AVS lesions.
- To compare TF expression across different AVS models.
Main Methods:
- Rabbits received normal chow, cholesterol-enriched chow, or cholesterol with vitamin D2 for 12 weeks.
- Aortic valve performance, leaflet structure, and cellular/lipid infiltration were assessed.
- Tissue factor (TF) expression and activity were evaluated using immunohistochemistry and biochemical assays.
Main Results:
- Cholesterol-enriched diets induced leaflet thickening and atherosclerotic-like lesions.
- Tissue factor (TF) was present in normal aortic valves and increased in AVS lesions.
- TF expression and activity were significantly elevated in AVS models.
Conclusions:
- Experimental AVS lesions exhibit atherosclerosis features, including tissue factor (TF).
- The presence of TF in AVS lesions reinforces the link between atherosclerosis and AVS.
- TF expression is a significant component of experimental AVS.
