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Obesity Surgery
Published in: Obesity Surgery 6/2015

01-06-2015 | Original Contributions

Gastric Electrical Stimulation Optimized to Inhibit Gastric Motility Reduces Food Intake in Dogs

Authors: Geng-Qing Song, Hongbing Zhu, Yong Lei, Charlene Yuan, Warren Starkebaum, Jieyun Yin, Jiande D. Z. Chen

Published in: Obesity Surgery | Issue 6/2015

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Abstract

Aims

The aim of this study was to test the hypothesis that that a method of gastric electrical stimulation (GES) optimized to inhibit gastric motility was effective in reducing food intake in dogs.

Methods

Female dogs with a gastric cannula and gastric serosal electrodes were studied in three experiments: (1) to determine the best parameters and locations of GES in inhibiting gastric tone, slow waves, and contractions in dogs;( 2) to investigate the reproducibility of the inhibitory effects of GES; and (3) to study the effect of the GES method on food intake in dogs.

Results

(1) For GES to exert significant effects on gastric motility, a pulse width of ≥2 ms was required, and with other appropriate inhibitory parameters, GES was able to increase gastric volume by 190.4 %, reduce antral contractions by 39.7 %, and decrease the percentage of normal slow waves by 47.6 %. In addition, the inhibitory effect of GES was more potent with the stimulation electrodes placed along the lesser or greater curvature than placed in the middle, and more potent with the electrodes placed in the distal stomach than in the proximal stomach; (2) the inhibitory effects of GES on gastric motility were reproducible; (3) the GES method optimized to inhibit gastric motility produced a 20 % reduction in food intakes in non-obese dogs.

Conclusion

GES with appropriate parameters inhibits gastric motility, and the effects are reproducible. The GES method optimized to inhibit gastric motility reduces food intake in healthy dogs and may have a therapeutic potential for treating obesity.
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Metadata
Title
Gastric Electrical Stimulation Optimized to Inhibit Gastric Motility Reduces Food Intake in Dogs
Authors
Geng-Qing Song
Hongbing Zhu
Yong Lei
Charlene Yuan
Warren Starkebaum
Jieyun Yin
Jiande D. Z. Chen
Publication date
01-06-2015
Publisher
Springer US
Published in
Obesity Surgery / Issue 6/2015
Print ISSN: 0960-8923
Electronic ISSN: 1708-0428
DOI
https://doi.org/10.1007/s11695-014-1491-8

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