Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Electrical activity of canine gallbladder.

J W Konturek1, G W Scott, Y J Kingma

  • 1Surgical-Medical Research Institute University of Alberta Edmonton, Canada.

Journal of Physiology and Pharmacology : an Official Journal of the Polish Physiological Society
|March 1, 1991
PubMed
Summary

Canine gallbladder muscle exhibits regular myoelectrical activity, similar to intestinal slow waves. This electrical activity correlates with and often precedes mechanical contractions, indicating a coordinated function.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

QUININE PROPHYLAXIS IN MALARIA.

British medical journal·2010
Same author

EPIDEMIC PNEUMONIC INFLUENZA AS SEEN IN MALAYA.

British medical journal·2010
Same author

Piezoelectrically tuned short-cavity dye-laser design.

Applied optics·2010
Same author

Prolonged labor, with special reference to postpartum hemorrhage.

Journal of the American Medical Association·2010
Same author

Contacted mode-locking-dye cell.

Applied optics·2010
Same author

Short-cavity picosecond dye laser design.

Applied optics·2010

Area of Science:

  • Gastroenterology
  • Physiology
  • Comparative Anatomy

Background:

  • The gallbladder muscle layer's electrical properties are not well understood.
  • Investigating gallbladder myoelectrical activity is crucial for understanding its contractile function.

Purpose of the Study:

  • To characterize the myoelectrical activity of the canine gallbladder muscle.
  • To correlate electrical activity with mechanical contractility in different gallbladder regions and orientations.

Main Methods:

  • Utilized the single sucrose-gap method to record myoelectrical activity.
  • Simultaneously measured tissue contractility using a force transducer.
  • Examined muscle strips from various gallbladder regions (fundus, corpus, neck) and orientations (longitudinal, circular, oblique).

Related Experiment Videos

Main Results:

  • Observed spontaneous, regular myoelectrical activity resembling slow waves in 82.7% of recordings.
  • Mean frequency of myoelectrical activity was 11.4 ± 5.2 cycles per minute, with no significant regional or orientational differences.
  • Electrical activity preceded and correlated with mechanical activity in 84.2% of cases.

Conclusions:

  • The canine gallbladder muscle exhibits intrinsic electrical activity that drives its contractions.
  • This activity is consistent across different regions and orientations of the gallbladder wall.
  • Findings provide insights into gallbladder physiology and potential mechanisms of dysfunction.