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Updated: Jun 15, 2026
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A Semi-Automated and Reproducible Biological-Based Method to Quantify Calcium Deposition In Vitro
Published on: June 2, 2022
2.3K
Miniaturized device for assessing calcification propensity of biohybrid implants under continuous flow
Aaron D Morgan1, Robert Dzhanaev1, Andrea Gorgels1
1Helmholtz Institute for Biomedical Engineering, Biointerface Lab, RWTH Aachen University Hospital, Aachen, Germany. willi.jahnenrwth-aachen.de.
Lab on a Chip
|December 23, 2025
Summary
Researchers developed a new, miniaturized flow chamber to study biohybrid implant calcification in real-time. This cost-effective device accurately mimics vascular conditions, aiding cardiovascular disease research.
Area of Science:
- Biomaterials Science
- Cardiovascular Engineering
- Medical Device Development
Background:
- Biohybrid implants show promise for cardiovascular disease treatment but face challenges like thrombogenesis and calcification.
- Current testing methods are costly, require large sample volumes, and lack physiological relevance due to static conditions.
- Vascular calcification is influenced by shear and mechanical forces, which are not replicated in traditional static cell cultures.
Purpose of the Study:
- To design and validate a miniaturized, dual-channel flow chamber for real-time visualization of biohybrid implant calcification.
- To create a cost-effective and physiologically relevant platform for testing biohybrid implant materials.
- To investigate the calcification process in biohybrid implants under simulated vascular conditions.
Main Methods:
- Computational fluid dynamics (CFD) simulations to determine optimal flow characteristics for homogeneous shear stress.
- Micro particle tracking velocimetry (PTV) to validate simulated shear stress levels.
- Real-time monitoring of calcification using fluorescent fetuin-A in a novel flow chamber with bovine pericardium, polycarbonate urethane, and fibrin-based scaffolds.
Main Results:
- The miniaturized flow chamber successfully mimicked physiological shear stress, validated by CFD and PTV.
- Bovine pericardium and polycarbonate urethane showed similar calcification levels in the new device and a large fatigue tester.
- Biohybrid textile-reinforced fibrin scaffolds with vascular smooth muscle cells began calcifying within 7 days in the flow chamber.
Conclusions:
- The developed flow chamber provides a cost-effective, real-time platform for studying biohybrid implant calcification.
- This technology offers novel insights into the origins and progression of pathological calcification in cardiovascular implants.
- The platform minimizes sample and reagent requirements, facilitating research into the health effects of calcification.
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