The role of extracellular matrix in age-related conduction disorders: a forgotten player?

Area of Science:

• Cardiovascular Aging
• Cardiac Electrophysiology
• Extracellular Matrix Biology

Background:

• Cardiovascular aging leads to structural and functional decline in the heart and blood vessels.
• Age-related arrhythmias contribute significantly to morbidity, mortality, and healthcare costs.
• The cardiac extracellular matrix (ECM) plays a critical role in cardiac structure, function, and cellular signaling.

Purpose of the Study:

• To review age-associated changes in the cardiac extracellular matrix within the heart's conduction system.
• To explore the clinical implications of these ECM alterations on cardiac function and arrhythmias.
• To discuss potential diagnostic and therapeutic strategies targeting ECM modifications in aging hearts.

Main Methods:

• Literature review focusing on cardiovascular aging and cardiac extracellular matrix.
• Analysis of studies investigating age-related changes in cardiac conduction system.
• Synthesis of findings linking ECM alterations to clinical manifestations of cardiac aging.

Main Results:

• Aging profoundly alters the cardiac extracellular matrix, affecting its structural and signaling properties.
• Changes in ECM anisotropy impact the electrical conduction system's function.
• These age-associated ECM modifications are linked to increased risk of arrhythmias and clinical complications.

Conclusions:

• The cardiac extracellular matrix is a key, yet underappreciated, factor in cardiovascular aging and conduction system dysfunction.
• Understanding ECM age-related changes offers new avenues for diagnosing and treating cardiac aging pathologies.
• Targeting ECM modifications presents promising therapeutic perspectives for age-related cardiac conditions.