Ussing Chamber Methods to Study the Esophageal Epithelial Barrier

Area of Science:

• Physiology
• Epithelial Biology
• Biophysics

Background:

• The Ussing chamber, developed in 1949, is a standard technique for studying ion and solute transport across epithelia.
• It utilizes a two-compartment system to isolate apical and basolateral tissue sides.
• Electrical and permeability measurements are key parameters assessed.

Purpose of the Study:

• To demonstrate the application of the Ussing chamber for studying epithelial barrier properties.
• To showcase its utility in investigating transepithelial and cellular electrophysiology.
• To highlight its role in examining epithelial secretion mechanisms.

Main Methods:

• Utilizing the Ussing chamber to analyze mouse esophageal epithelium barrier function.
• Employing a modified Ussing chamber for simultaneous electrophysiological studies in rabbit esophagus.
• Applying the Ussing chamber to investigate bicarbonate secretion in pig esophagus.

Main Results:

• The Ussing chamber effectively measures electrical parameters like voltage, current, and resistance.
• Tracer and isotope studies enable monitoring of solute and marker permeability.
• The technique is applicable to various species and tissue types, including human biopsies.

Conclusions:

• The Ussing chamber is a versatile and powerful technique for epithelial research.
• It provides insights into epithelial physiology and pathophysiology.
• Its applications extend to diverse research areas, from basic science to clinical investigations.