Related Experiment Video
Updated: May 28, 2026
06:56
An Ex Vivo Porcine Model for Hydrodynamic Testing of Experimental Aortic Valve Procedures and Novel Medical Devices
Published on: August 25, 2023
Towards Neoatherosclerosis: A Porcine Model for Enhanced Device Testing
Jing Xie1,2, Ole Gemeinhardt1,2, Stephanie Bettink3
1Department of Radiology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Charité Campus Mitte, Charitéplatz 1, 10117, Berlin, Germany.
Journal of Cardiovascular Translational Research
|May 26, 2026
Summary
A new porcine model using a high-fat, nicotine diet successfully replicates hyperlipidemic conditions, enabling better testing of endovascular therapies for neoatherosclerosis development in peripheral arteries.
Area of Science:
- Cardiovascular Research
- Animal Models
- Atherosclerosis Research
Background:
- The current porcine in-stent stenosis model lacks hyperlipidemic conditions crucial for studying neoatherosclerosis.
- Neoatherosclerosis, driven by hyperlipidemia, is a significant challenge in endovascular therapies.
Purpose of the Study:
- To develop a practical porcine model that mimics hyperlipidemic, pro-atherogenic states for testing endovascular therapies targeting neoatherosclerosis.
- To evaluate the efficacy of a high-fat, nicotine-supplemented diet (HFDN) in inducing neoatherosclerosis in a porcine model.
Main Methods:
- Juvenile pigs were fed a high-fat, nicotine-supplemented diet (HFDN) for two weeks.
- Bare-metal stents were implanted in coronary and peripheral arteries; control pigs received a standard diet.
- Artery segments were analyzed four weeks post-implantation for neoatherosclerosis markers.
Main Results:
- HFDN feeding significantly increased serum LDL and cotinine levels.
- Peripheral arteries in HFDN-fed pigs showed greater in-stent late lumen loss compared to controls.
- Histological analysis revealed early neoatherosclerosis, including foam cell accumulation and atheroma formation, in HFDN-fed pigs.
- Increased calcium phosphate deposition was confirmed in the arteries of HFDN-fed pigs.
Conclusions:
- This HFDN porcine model provides a straightforward and effective platform for investigating endovascular devices aimed at preventing or treating neoatherosclerosis.
- The model successfully replicates key pathological features of neoatherosclerosis relevant to human disease.
