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Evidence for an enterotropic hormone: compensatory hyperplasia in defunctioned bowel
The British Journal of Surgery
|October 1, 1978
Summary
Compensatory intestinal hyperplasia, or gut adaptation, requires both intraluminal nutrients and enterotropic hormones. This study investigated these factors in jejunal resection models.
Area of Science:
- Gastroenterology
- Cellular Biology
- Surgical Adaptation
Background:
- Compensatory intestinal hyperplasia is a crucial adaptive response following intestinal resection.
- The roles of luminal contents and systemic factors in this adaptation are not fully elucidated.
Purpose of the Study:
- To differentiate the contributions of luminal nutrients versus systemic factors in driving compensatory intestinal hyperplasia after jejunal resection.
Main Methods:
- Utilized Thiry-Vella loops (defunctioned ileum) and ileum in continuity (functioning) to compare adaptive responses post-jejunectomy.
- Assessed mucosal RNA and DNA content and DNA specific activity in different intestinal segments.
Main Results:
- Functioning ileum showed significant increases in nucleic acids (27-86%) and DNA specific activity (34-36%) compared to defunctioned loops (16-21% increase in RNA/DNA).
- Duodenal hyperplasia proximal to resection was rapid but less pronounced than distal adaptation.
Conclusions:
- Both intraluminal nutrients and enterotropic hormones are essential for full compensatory intestinal hyperplasia.
- Luminal factors play a significant role in driving the adaptive hyperplasia of the ileum.