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Gallbladder expansion induced by feeding

S Ikeda1, Y Sera

  • 1Department of Pediatric Surgery, Kumamoto University Medical School, Japan.

Surgery Today
|January 1, 1994
PubMed
Summary

Human gallbladder expansion during feeding was observed using ultrasound. This gallbladder response suggests a cholinergic vago-vagal reflex is involved in digestion.

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Area of Science:

  • Gastroenterology
  • Physiology

Background:

  • The gallbladder stores and releases bile to aid digestion.
  • Understanding gallbladder function during feeding is crucial for digestive health.

Purpose of the Study:

  • To investigate gallbladder size changes in response to feeding.
  • To explore the physiological mechanisms underlying gallbladder expansion and contraction.

Main Methods:

  • Ultrasound imaging was used to monitor human gallbladder size during feeding.
  • Gallbladder response was assessed in normal adults, post-gastrectomy patients, and post-vagotomy patients.
  • Gastric stimulation with air was performed in normal adults.

Main Results:

  • Gallbladder expansion was observed in 74% of individuals prior to contraction during feeding.
  • Patients who underwent gastrectomy or vagotomy showed gallbladder contraction solely in response to feeding.
  • Rapid gastric air insufflation induced gallbladder expansion in healthy individuals.

Conclusions:

  • Gallbladder expansion is a physiological response to feeding.
  • The findings suggest a cholinergic vago-vagal reflex mediates gallbladder expansion during digestion.
  • This reflex plays a significant role in the normal digestive process.

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