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Updated: Mar 20, 2026

Functional Assessment of Intestinal Tight Junction Barrier and Ion Permeability in Native Tissue by Ussing Chamber Technique
Published on: May 26, 2021
Ussing Chamber Technique to Measure Intestinal Epithelial Permeability
Sadasivan Vidyasagar1, Gordon MacGregor2
1Department of Radiation Oncology, University of Florida Shands Cancer Center, Cancer and Genetics Research Complex, 2033 Mowry Road, Box 103633, Gainesville, FL, 32610, USA. vidyasagar@ufl.edu.
This study details methods for measuring epithelial barrier function using electrophysiological parameters and particle flux. Techniques include Ussing chamber analysis for transepithelial electrical resistance and nonionic particle permeability.
Area of Science:
- Cell Biology
- Physiology
- Biophysics
Background:
- Epithelial cells form polarized layers crucial for barrier function.
- Tight junctions between epithelial cells maintain tissue integrity.
- Assessing epithelial barrier function is vital in various biological and medical contexts.
Purpose of the Study:
- To describe methods for evaluating epithelial barrier function.
- To detail electrophysiological and particle flux measurements.
- To emphasize the application of Ussing chamber techniques.
Main Methods:
- Measurement of transepithelial electrical conductance and resistance.
- Determination of dilution potential across epithelial tissues.
- Assessment of nonionic particle flux (e.g., dextran, mannitol).
- Utilizing Ussing chamber systems for precise measurements.
Main Results:
- Established protocols for quantifying epithelial barrier properties.
- Demonstrated the utility of electrophysiological measurements.
- Validated particle flux assays for assessing permeability.
Conclusions:
- The described methods provide robust assessments of epithelial barrier function.
- Ussing chamber techniques are effective for detailed physiological analysis.
- These techniques are applicable to diverse research investigating epithelial integrity.
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