Endothelial glycocalyx: basic science and clinical implications

Area of Science:

• Cardiovascular Physiology
• Endothelial Biology
• Microcirculation

Background:

• The classic Starling principle describes microvascular fluid exchange based on pressure gradients and intercellular gaps.
• The endothelial glycocalyx, a luminal layer, significantly influences fluid dynamics and has revised traditional concepts.
• Damage to the glycocalyx increases vascular permeability, leading to edema and surgical morbidity.

Purpose of the Study:

• To summarize current literature on the endothelial glycocalyx.
• To explore its basic science, injury mechanisms, and protective strategies.
• To discuss clinical perspectives and implications for patient management.

Main Methods:

• Literature review of basic science and clinical studies on the endothelial glycocalyx.
• Analysis of factors causing glycocalyx shedding and its pathological consequences.
• Examination of therapeutic strategies for glycocalyx preservation.

Main Results:

• The endothelial glycocalyx plays a critical role in regulating microvascular permeability, distinct from the classic Starling model.
• Various factors, including mechanical stress, inflammation, and hyperglycemia, can damage the glycocalyx.
• Preserving the glycocalyx shows potential for improving perioperative fluid management and patient outcomes.

Conclusions:

• The endothelial glycocalyx is a key determinant of vascular integrity and fluid balance.
• Understanding glycocalyx pathophysiology is essential for managing perioperative complications.
• Therapeutic interventions targeting glycocalyx preservation may enhance surgical patient recovery.