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Endothelial Protrusions in Junctional Integrity and Barrier Function.

Natascha G Alves1, Zeinab Y Motawe1, Sarah Y Yuan1

  • 1Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, FL, United States.

Current Topics in Membranes
|October 27, 2018
PubMed
Summary
This summary is machine-generated.

Inflammation dramatically increases microvascular permeability, causing tissue edema. Understanding endothelial cell mechanisms, including temporal protrusions, is key to developing new therapies for edema reduction.

Keywords:
Endothelial local lamellipodiaMicrovascular permeabilitySystemic inflammation

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Area of Science:

  • Physiology
  • Cell Biology
  • Pathology

Background:

  • Endothelial cells form a semi-permeable barrier crucial for blood-tissue exchange.
  • Increased microvascular permeability during inflammation causes tissue edema and organ dysfunction.
  • Molecular mechanisms controlling endothelial barrier function are vital for therapeutic development.

Purpose of the Study:

  • To review cellular and molecular mechanisms of endothelial hyperpermeability in inflammation.
  • To discuss recent findings on endothelial cell protrusions and their role in barrier integrity.
  • To highlight potential therapeutic strategies for reducing inflammatory edema.

Main Methods:

  • Literature review of cellular and molecular mechanisms.
  • Analysis of recent findings on endothelial cell behavior during inflammation.
  • Discussion of the paracellular pathway and solute diffusion.

Main Results:

  • Inflammation significantly increases endothelial permeability, leading to edema.
  • Endothelial cell protrusions may influence intercellular junction integrity.
  • The paracellular pathway is a key route for solute diffusion.

Conclusions:

  • Understanding endothelial hyperpermeability mechanisms is critical for treating inflammatory edema.
  • Endothelial cell protrusions represent a novel area of investigation for barrier function.
  • Targeting these mechanisms offers potential for new therapeutic interventions.