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Updated: Jun 26, 2026
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In Vitro Characterization of the Electrophysiological Properties of Colonic Afferent Fibers in Rats
Published on: September 27, 2017
Electrical stimulation induces propagated colonic contractions in an experimental model
S Aellen1, P H Wiesel, J-P Gardaz
1Services de Chirurgie Viscérale, Gastroentérologie et Hépatologie, Anesthésiologie, Centre Hospitalier Universitaire Vaudois, Switzerland. steve.aellen@chuv.ch
The British Journal of Surgery
|January 23, 2009
Summary
Direct colonic electrical stimulation effectively provokes localized and propagated colonic contractions. This technique shows promise for treating colonic motility disorders like chronic constipation.
Area of Science:
- Gastroenterology
- Neurogastroenterology
- Medical Devices
Background:
- Colonic electrical stimulation is a potential treatment for motility disorders.
- Chronic constipation is a target condition for this therapy.
- A battery-operated device was developed to deliver stimulation.
Purpose of the Study:
- To investigate the ability of electrical stimulation to induce colonic contractions.
- To assess the characteristics of electrically stimulated colonic motility.
Main Methods:
- Electrodes were implanted in the caecal seromuscular layer of anesthetized pigs.
- A neurostimulator delivered electrical pulses to induce contractions.
- Caecal motility was measured using video analysis, manometry, and colonic transit assessment.
Main Results:
- Electrical stimulation (8-10 V, 1000 µs, 120 Hz, 10-30 s) generated significant caecal contractions.
- Maximal contraction strength occurred at 20-25 s post-stimulation.
- Stimulation induced both localized and propagated contractions over at least 10 cm, with a subsequent relaxation phase.
Conclusions:
- Electrical stimulation successfully modulated caecal motility.
- The study demonstrated the capacity of electrical stimulation to provoke colonic contractions.
- This approach may offer a novel therapeutic strategy for motility disorders.
