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Updated: Sep 12, 2025
Culturing Mouse Cardiac Valves in the Miniature Tissue Culture System
Published on: October 19, 2015
Unveiling the intricacies of cardiac valve pathophysiology
Johannes H Jedrzejczyk1,2, Oline Hjertensgaard1,2, Victor G Puelles2,3,4
1Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Aarhus, Denmark.
Insights
Heart valves are complex, cellular structures, not passive. Understanding their cellular composition and function is key to comprehending valve physiology and pathology, including calcification and stenosis.
Area of Science:
- Cardiovascular Biology
- Cellular and Molecular Medicine
- Biomedical Engineering
Background:
- Traditionally viewed as simple, avascular, and passive, heart valves possess a complex cellular architecture.
- Recent research challenges this view, highlighting intricate cellular compositions and dynamic physiological behaviors.
Purpose of the Study:
- To conduct a comprehensive literature review on the cellular composition and (patho)physiological behavior of heart valves.
- To deepen the understanding of valvular structure and function beyond traditional perspectives.
Main Methods:
- Systematic literature search using PubMed and Google Scholar.
- Manual search of relevant journals and websites.
- Screening of publications by title and abstract, followed by full-text review for eligibility.
Main Results:
- Cardiac valves feature a complex three-layered structure with distinct cellular components, including valvular endothelial cells and valvular interstitial cells.
- Valvular endothelial cells differ from vascular endothelial cells and are crucial for valve function.
- Valvular interstitial cells, with four subtypes, are essential for normal physiology but can contribute to pathology like calcification and stenosis when aberrantly activated.
Conclusions:
- The complex cellular interplay within heart valves is critical for maintaining normal function and structural integrity.
- Aberrant activation of valvular interstitial cells contributes to valve pathology, such as calcification and stenosis.
- A holistic, integrated approach considering cellular, molecular, and neural aspects is essential for future heart valve research.
Introduction:
Heart valves have long been regarded as uncomplicated, avascular, and passive structures. However, we hypothesise that their structure and function are complex. Therefore, we have reviewed the available literature to gain a profound understanding of their cellular composition and (patho)physiological behaviour.
Methods:
A systematic search for articles related to the anatomy, histology, and physiology of heart valves was conducted using PubMed and Google Scholar, as well as a manual search of journals and websites. All publications were screened by title and abstract, and potentially eligible articles were reviewed in full text to assess their relevance.
Results:
Cardiac valves comprise a complex, three-layered structure composed of an intricate network of cells. Valvular endothelial cells cover the atrial and ventricular sides of the valves. Valvular endothelial cells are morphologically and functionally distinct from vascular endothelial cells and play a crucial role in maintaining valve function. The three-valve layers, lamina fibrosa, spongiosa, and ventricularis, exhibit distinct biomechanical properties due to their varying extracellular matrix components and valvular interstitial cells. Valvular interstitial cells can be divided into four subtypes, each exhibiting specific cellular functions essential for normal valve physiology. However, pathological stimuli can cause aberrant activation of the valvular interstitial cells, leading to valve calcification and stenosis.
Conclusion:
The intricate interplay of cellular components within cardiac valves is vital for maintaining normal valve function and structural integrity, but also contributes to valve pathology. A holistic understanding of heart valves, integrating cellular, molecular, and neural perspectives, is needed in the future.
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