Extracellular Matrix in Calcific Aortic Valve Disease: Architecture, Dynamic and Perspectives

Area of Science:

• Cardiovascular Medicine
• Cell Biology
• Biochemistry

Background:

• Calcific Aortic Valve Disease (CAVD) is the most prevalent valvular heart disease in aging populations.
• It affects up to 13% of individuals over 65, leading to aortic stenosis.
• CAVD was historically viewed as passive degeneration but is now understood as an active disease process.

Purpose of the Study:

• To review cellular and molecular alterations in aortic valve pathogenesis during CAVD.
• To elucidate the role of extracellular matrix (ECM) in CAVD progression.
• To highlight the active cellular mechanisms driving CAVD.

Main Methods:

• Literature review of cellular and molecular mechanisms in CAVD.
• Analysis of pathological pathways from sclerosis to calcification.
• Examination of the roles of resident and circulating cells.

Main Results:

• CAVD involves active processes driven by resident and circulating cells.
• Valve interstitial cells, stem cells, and immune cells play critical roles.
• Cell-derived matrix vesicles and ECM components are integral to calcification.

Conclusions:

• CAVD pathogenesis is an active, multifactorial process.
• Understanding cellular interactions and ECM remodeling is crucial for therapeutic strategies.
• Further research into these mechanisms can inform treatments for aortic stenosis.