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Updated: Apr 15, 2026

Quantifying Single Microvessel Permeability in Isolated Blood-perfused Rat Lung Preparation
Published on: June 30, 2014
Cytoskeletal mechanisms regulating vascular endothelial barrier function in response to acute lung injury
Anita Kása1, Csilla Csortos2, Alexander D Verin3
1Vascular Biology Center; Georgia Regents University ; Augusta, GA USA.
Abstract:
Endothelial cells (EC) form a semi-permeable barrier between the interior space of blood vessels and the underlying tissues. In acute lung injury (ALI) the EC barrier is weakened leading to increased vascular permeability. It is widely accepted that EC barrier integrity is critically dependent upon intact cytoskeletal structure and cell junctions. Edemagenic agonists, like thrombin or endotoxin lipopolysaccharide (LPS), induced cytoskeletal rearrangement, and EC contractile responses leading to disruption of intercellular contacts and EC permeability increase. The highly clinically-relevant cytoskeletal mechanisms of EC barrier dysfunction are currently under intense investigation and will be described and discussed in the current review.
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