Mechanisms of cardiac collagen deposition in experimental models and human disease

Area of Science:

• Cardiology
• Pathology
• Biomedical Engineering

Background:

• Cardiac fibrosis, the abnormal deposition of extracellular matrix in the heart, is a common feature across various heart diseases.
• This myocardial alteration impairs cardiac function by limiting contractility, relaxation, electrical conductivity, and nutrient diffusion.
• Fibrosis is categorized as reparative (replacing damaged tissue) or reactive (diffuse deposition without damage).

Purpose of the Study:

• To review current knowledge on cardiac fibrosis in human patients and animal models.
• To discuss the mechanisms underlying cardiac fibrosis, linking experimental findings to clinical observations.
• To summarize current noninvasive/minimally invasive detection methods for cardiac fibrosis.

Main Methods:

• Literature review of human and experimental animal studies on cardiac fibrosis.
• Analysis of mechanisms driving collagen deposition in the myocardium.
• Survey of existing and emerging diagnostic techniques for fibrosis assessment.

Main Results:

• Cardiac fibrosis is a significant factor in ischemic, hypertensive, diabetic, and valvular heart diseases.
• The precise threshold at which collagen deposition becomes pathological remains unclear.
• Various methods exist for assessing fibrosis, crucial for research and clinical practice.

Conclusions:

• A comprehensive understanding of cardiac fibrosis mechanisms is essential for advancing cardiovascular medicine.
• Improved diagnostic tools are needed to accurately quantify fibrosis and guide patient management.
• Further research is required to elucidate the pathological transition of collagen deposition in heart disease.