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Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
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Related Experiment Video

Updated: Jun 27, 2026

Isolation of Mouse Interstitial Valve Cells to Study the Calcification of the Aortic Valve In Vitro
05:47

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Published on: May 10, 2021

Calcific aortic stenosis: lessons learned from experimental and clinical studies.

Nalini M Rajamannan1

  • 1Division of Cardiology and Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA. n-rajamannan@northwestern.edu

Arteriosclerosis, Thrombosis, and Vascular Biology
|November 22, 2008
PubMed
Summary

Calcific aortic stenosis is an active, bone-forming process, not passive degeneration. Understanding this cellular mechanism may lead to new medical therapies for aortic valve disease.

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Area of Science:

  • Cardiovascular Medicine
  • Pathology
  • Biomedical Research

Background:

  • Calcific aortic stenosis is the leading cause for surgical valve replacement in the US.
  • Historically viewed as passive calcification, recent evidence suggests an active cellular process.
  • Atherosclerosis and its risk factors are increasingly linked to aortic valve disease.

Purpose of the Study:

  • To review the pathogenesis of calcific aortic stenosis.
  • To explore the potential for medical therapies based on new insights into the disease process.
  • To examine experimental research on aortic valve disease and atherosclerosis.

Main Methods:

  • Review of epidemiological and experimental studies.
  • Analysis of cellular mechanisms in valve leaflet degeneration.
  • Examination of the link between atherosclerosis and aortic valve disease.

Main Results:

  • Calcific aortic stenosis involves active cellular processes and regulated bone formation within the valve leaflet.
  • The disease is not a passive degenerative phenomenon as previously thought.
  • Evidence supports an association between atherosclerosis and aortic valve disease.

Conclusions:

  • The atherosclerotic hypothesis provides a new framework for understanding calcific aortic stenosis.
  • Treatments targeting atherosclerosis may be effective in managing aortic valve disease.
  • Further research into cellular mechanisms can guide the development of medical therapies.