The complex dynamics of myocardial interstitial fibrosis in heart failure. Focus on collagen cross-linking

Area of Science:

• Cardiovascular Research
• Biomedical Engineering
• Pathology

Background:

• Myocardial interstitial fibrosis (MIF) is prevalent in heart failure (HF), affecting both preserved and reduced ejection fraction.
• MIF correlates with diminished cardiac function and poorer clinical prognosis.
• The quality of collagen fibers and extracellular matrix, including collagen types, fibronectin, and collagen cross-linking (CCL), significantly impacts MIF's effects.

Purpose of the Study:

• To explore the multifaceted nature of MIF in heart failure.
• To specifically focus on the role and implications of collagen cross-linking (CCL) in MIF within the context of HF.

Main Methods:

• Review of existing literature on myocardial interstitial fibrosis and heart failure.
• Analysis of studies investigating extracellular matrix composition and collagen cross-linking in HF models and patients.
• Synthesis of data linking cardiac CCL to ventricular stiffness and HF hospitalization risk.

Main Results:

• Increased CCL is a key feature in both HF patients and animal models.
• Elevated cardiac CCL is directly associated with increased left ventricular stiffness.
• Higher CCL levels in HF patients correlate with an increased risk of HF-related hospitalizations.

Conclusions:

• Collagen cross-linking (CCL) is a critical determinant of myocardial interstitial fibrosis (MIF) in heart failure.
• Targeting CCL may offer a therapeutic strategy to improve cardiac function and clinical outcomes in HF.
• Understanding the complex interplay of ECM components in MIF is crucial for advancing HF treatment.