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Updated: Jan 5, 2026
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A Mouse Model of Intestinal Partial Obstruction
Published on: March 5, 2018
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Histopathological elements analyzed in dynamics in mechanical bowel obstructions - experimental study on laboratory
Ionuţ Simion Coman1, Costin George Florea, Daniel Gheorghiţă
1Department of Surgery, "Carol Davila" University of Medicine and Pharmacy, Department of General Surgery, "Bagdasar-Arseni" Emergency Clinical Hospital, Bucharest, Romania; grigorean.valentin@yahoo.com.
Summary
This study on bowel obstruction in rats revealed significant digestive tract distension and microscopic damage, including edema and thrombosis, proximal to the blockage. These findings provide insights into the physiological responses to intestinal obstruction.
Area of Science:
- Gastroenterology
- Surgical Pathology
- Experimental Medicine
Background:
- Bowel obstruction causes significant macroscopic and microscopic alterations in the digestive tract.
- Understanding these changes is crucial for managing this clinical syndrome.
Purpose of the Study:
- To investigate the macroscopic and microscopic effects of induced mechanical bowel obstruction in rats.
- To analyze the physiological responses in the digestive tract proximal to the obstruction site.
Main Methods:
- An experimental study was conducted on Wistar rats, divided into control (Group A) and obstruction groups (Group B: sigmoid colon obstruction, Group C: small bowel obstruction).
- Surgical induction of mechanical bowel obstruction was performed.
- Macroscopic and microscopic analyses of digestive tract segments adjacent to the obstruction were conducted at different time points.
- A modified protocol was used due to premature deaths in Group C.
Main Results:
- Significant distension of the digestive tract proximal to the obstruction was observed.
- Microscopic examination revealed edema, thrombosis, ischemic lesions, and the accumulation of polymorphonuclear neutrophils (PMN) and macrophages.
Conclusions:
- Induced mechanical bowel obstruction leads to pronounced digestive tract distension.
- Significant inflammatory and ischemic reactions occur at the microscopic level in response to bowel obstruction.
