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Patterns of electrical activity in the digestive tract of the conscious cat

Published online by Cambridge University Press:  09 March 2007

Maurice Roche ,
Lionel Bueno ,
Monique Vagne  and
Christian Blourde
Maurice Roche
Affiliation:
Department of Physiology, National Institute of Applied Sciences, 69621 Villeurbanne, France
Lionel Bueno
Affiliation:
Department of Physiology, National Veterinary School, 31076 Toulouse, France
Monique Vagne
Affiliation:
INSERM, Unit 45, Hospital Edouard Herriot, 69374 Lyon, France
Christian Blourde
Affiliation:
INSERM, Unit 45, Hospital Edouard Herriot, 69374 Lyon, France
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Abstract

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1. Bipolar electrodes were permanently implanted on the gastric antrum, and on the different portions of the small intestine of each of eleven healthy adult cats receiving one meal daily. All parts of the feline gut exhibited, as in several other species, regular slow waves and alternate periods of quiescence and electrical spiking activity during the recording sessions lasting from 10 to 30 d.

2. Patterns of electrical activity characteristic of this species were identified. Both the amplitude and frequency of the antral slow-wave were related to the presence cf superimposed spike bursts during fasting decrease in the antral slow-wave frequency and increase in the length of the duodenal plateau of slow waves after the daily meal were related to its nature.

3. In fasted state, the electrical spiking activity of the small intestine occurred as fused spike bursts of large amplitude potentials migrating slowly over short distances only 24 h after feeding. They are interspersed with short periods of irregular spiking activity.

4. These findings suggested that, except the distal part of the small intestine which showed an activity which resembled partially the migrating myoelectric complex observed in other species during the fasting state, the motility patterns of the digestive tract in the cat were not comparable to those observed in the dog or sheep. In the cat, mixing of the contents seemed to result from more or less regular spiking activity allowing their propulsion distally. The propagation over distances varying from 200 to 1000 mm of nine to eighteen daily fused spike bursts in the fasting state remains unclear but they are related to the digestive function in accordance with the displacement aborally of their origin in a prolonged fasting condition.

Type
Papers on General Nutrition
Information
British Journal of Nutrition , Volume 48 , Issue 1 , July 1982 , pp. 129 - 135
Copyright
Copyright © The Nutrition Society 1982

References

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