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February 2, 2026Open Access

Engineered artificial atherosclerotic plaque simulates stenosis in porcine coronary arteries to mimic human plaque behavior.

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Why the study?

Experimental coronary interventions are typically performed on non-diseased vessels in healthy animals, creating a need for a stenotic lesion mimicking human atherosclerotic plaque to provide a more realistic pathoanatomical scenario.

Can an artificial atherosclerotic plaque be engineered to mimic human plaque morphology and be successfully inserted into a porcine coronary artery model?

Population

Resected pig hearts and in vitro setups

Design

Preclinical experimental and bioengineering study

Key result

An artificial atherosclerotic plaque composed of gelatin, cholesterol, phospholipids, hydroxyapatite, and calcium carbonate successfully mimicked the mechanical properties of human plaques and was implantable in porcine coronary arteries.

Authors

PLPhilipp LindenhahnJRJannik RichterMFMiriam Frommer

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Overview

May enable preclinical coronary intervention testing in a realistic stenosis model; leaves open human translation pending validation.

Key Points

  • The aim was to create a realistic model of atherosclerotic plaque for better study of coronary interventions.
  • Engineered a casting mold to fabricate a stenotic atherosclerotic plaque
  • Conducted oscillatory rheology experiments for plaque testing
  • Performed stability tests with microscopic examination and weight monitoring
  • Assessed cytotoxicity for safety in resected pig hearts
  • Used diagnostic imaging to visualize plaque placement
  • Successful creation of an atherosclerotic plaque model from gelatin and other materials
  • Model produces localized partial stenosis in porcine coronary arteries
  • Plaque behaves similarly to human atherosclerotic plaques during tests
  • Potential for aiding research into coronary artery disease interventions

Structured PICO

Can an artificial atherosclerotic plaque be engineered to mimic human plaque morphology and be successfully inserted into a porcine coronary artery model?

P
Population
Experimental study developing and testing an artificial atherosclerotic plaque model using porcine hearts and human donor plaques.
I
Intervention
Artificial atherosclerotic plaque composed of gelatin, cholesterol, phospholipids, hydroxyapatite, and fine-grained calcium carbonate
O
Outcome
Feasibility of creating and inserting the artificial plaque, assessed by oscillatory rheology, long-term stability, cytotoxicity, and diagnostic imagingsurrogate

The development of an artificial atherosclerotic plaque model for porcine coronary arteries provides a realistic pathoanatomical tool for future preclinical testing of interventional and surgical therapies.

Limitations

  • The AAP does not replicate the high inflammatory environment present in the setting of this disease.
  • The material properties represent a simplified elastic material, not a strain-stiffening material.
  • The AAP geometry is a cylinder, not a stenosis commonly found in human atherosclerotic vessels.
  • The ex vivo experiment does not fully represent the in vivo environment.
  • Only the storage modulus is reported, which can be limited.

Cite This Study

Lindenhahn et al. (2024) studied Coronary Heart Disease. Artificial atherosclerotic plaque (AAP) was evaluated on Mechanical properties and implantability. An artificial atherosclerotic plaque composed of gelatin, cholesterol, phospholipids, hydroxyapatite, and calcium carbonate successfully mimicked the mechanical properties of human plaques and was implantable in porcine coronary arteries.

synapsesocial.com/papers/6980fc91c1c9540dea80e6dahttps://doi.org/10.15488/20487
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