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Updated: Jun 24, 2026
09:44
Functional Assessment of Intestinal Motility and Gut Wall Inflammation in Rodents: Analyses in a Standardized Model of Intestinal Manipulation
Published on: September 11, 2012
Effect of stasis on intestinal enzyme activities
Australian and New Zealand Journal of Medicine
|April 1, 1975
Summary
Small intestinal enzyme activity decreased in rats with surgically induced upper intestinal stasis. This reduction was most significant in areas with bacterial overgrowth, impacting brush border and lysosomal enzymes.
Area of Science:
- Gastroenterology
- Digestive Physiology
- Enzymology
Background:
- Small intestinal mucosal enzymes are crucial for nutrient digestion.
- Upper intestinal stasis can lead to bacterial overgrowth and altered bile salt metabolism.
- Brush border and lysosomal enzymes play distinct roles in intestinal function.
Purpose of the Study:
- To investigate the impact of surgically-induced upper intestinal stasis on small intestinal mucosal enzyme activities in rats.
- To compare enzyme levels in stasis-affected areas with control regions.
- To explore the relationship between bacterial overgrowth, bile salt levels, and enzyme function.
Main Methods:
- Surgically induced upper intestinal stasis in a rat model.
- Measurement of lactase, sucrase, maltase, alkaline phosphatase, and N-acetyl-beta-glucosaminidase activities.
- Analysis of enzyme activity in mucosa from the blind loop, distal gut, and control segments.
Main Results:
- A significant reduction in the activities of all studied enzymes (lactase, sucrase, maltase, alkaline phosphatase, N-acetyl-beta-glucosaminidase) was observed in operated rats.
- The most pronounced enzyme activity decrease occurred in the blind loop and distal gut mucosa.
- These affected areas exhibited gross bacterial overgrowth and elevated deconjugated bile salt levels.
Conclusions:
- Surgically induced upper intestinal stasis leads to a marked decrease in small intestinal mucosal enzyme activities in rats.
- Bacterial overgrowth and altered bile salt metabolism in the blind loop and distal gut correlate with reduced enzyme function.
- The precise role of these enzyme changes in malabsorption associated with upper gut bacterial contamination requires further investigation.
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