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The American Journal of Digestive Diseases

, Volume 13, Issue 2, pp 147–156 | Cite as

Differential response to various stimulants in the body and antrum of the canine stomach

  • J. J. Anderson
  • R. J. Bolt
  • B. M. Ullman
  • P. Bass
Article

Summary

This study was initiated to evaluate gastric motility with the use of extraluminal force transducers in unanesthetized dogs. The contractile activity of the circular and longitudinal muscle in both antrum and body of the canine stomach was monitored in the interdigestive state and under the influence of food, acetylcholine, and 5-hydroxytryptophane. The latter two chemicals were infused for a 30-min. period. Each of the two muscle layers in antrum and body had a maximum frequency of 5 contractions per minute. This activity was continuous during 30 min. only under the influence of food and 5-hydroxytryptophane. Acetylcholine stimulant effects did not persist beyond the initial 10 min. of infusion. Amplitude of contractions under spontaneous or induced activity varied. The height of these contractions were circular antrum > longitudinal antrum > circular body > longitudinal body. This method of recording muscle contractility is believed to be useful for quantitatively assaying gastric activity without compromise of physiologic environment.

Keywords

Public Health Acetylcholine Muscle Layer Differential Response Maximum Frequency 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Hoeber Medical Division • Harper & Row, Publishers, Incorporated 1968

Authors and Affiliations

  • J. J. Anderson
    • 1
  • R. J. Bolt
    • 1
  • B. M. Ullman
    • 1
  • P. Bass
    • 1
  1. 1.From the University of Michigan Medical Center and ParkeDavis & Company Research LaboratoriesAnn Arbor

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