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Updated: Jul 10, 2026
08:49
Murine Ileocolic Bowel Resection with Primary Anastomosis
Published on: October 29, 2014
Does the ileocolonic junction differentiate between solids and liquids?
J Hammer1, M Camilleri, S F Phillips
1Division of Gastroenterology, Mayo Clinic, Rochester, MN 55905.
Gut
|February 1, 1993
Summary
The distal ileum can differentiate between solids and liquids, influencing how contents move into the colon. However, the ileocecal junction does not distinguish between solid and liquid transit.
Area of Science:
- Gastroenterology
- Digestive Physiology
- Human Physiology
Background:
- Previous studies suggested ileal bolus movements fill the colon.
- The mechanism of solid-liquid discrimination in ileal transit was unclear.
Purpose of the Study:
- To test if ileal bolus transit into the colon differentiates between solids and liquids.
- To investigate the role of the distal ileum and ileocecal junction in this process.
Main Methods:
- 13 healthy volunteers underwent ileal infusion of radiolabeled solid (111In resin pellets) and liquid (99mTc-DTPA) markers.
- Scintigraphy quantified transit from ileum to colon; ileal motility was also monitored.
- Markers were infused at proximal (100 cm) and distal (<50 cm) ileal locations.
Main Results:
- Discriminant transit (liquids faster than solids) was observed when markers were infused in the proximal ileum.
- No separate solid-liquid transit was seen when markers were instilled in the distal ileum.
- No consistent ileal motor pattern correlated with colonic filling.
Conclusions:
- The distal ileum demonstrates the capacity to discriminate between solid and liquid contents.
- The ileocecal junction appears unable to differentiate between solid and liquid transit.
- Ileal content processing influences subsequent colonic filling.
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