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Related Experiment Videos

mRNA levels of dipeptidyl peptidase IV decrease during intestinal adaptation.

J L Dunphy1, F A Justice, R G Taylor

  • 1Department of Medicine, Monash Medical Centre, Clayton, Victoria, 3168, Australia.

The Journal of Surgical Research
|October 21, 1999
PubMed
Summary
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Dipeptidyl peptidase IV (DPP IV) gene expression decreases after massive small bowel resection in rats. This suggests enhanced glucagon-like peptide 2 (GLP-2) activity for mucosal growth, potentially improving GLP-2 as a human therapy.

Area of Science:

  • Gastroenterology
  • Molecular Biology
  • Surgical Research

Background:

  • Glucagon-like peptide 2 (GLP-2) is an enterotrophic factor promoting mucosal hyperplasia during intestinal adaptation.
  • Dipeptidyl peptidase IV (DPP IV) inactivates GLP-2, potentially limiting its therapeutic effects.
  • Massive small bowel resection (MSBR) in rats models intestinal adaptation.

Purpose of the Study:

  • To investigate the role of DPP IV in intestinal adaptation following MSBR.
  • To determine DPP IV mRNA levels in the rat small bowel after MSBR.

Main Methods:

  • Total RNA was extracted from rat terminal ileum at 2, 4, and 7 days post-MSBR.
  • DPP IV mRNA levels were analyzed using Northern blot analysis.

Main Results:

Related Experiment Videos

  • DPP IV mRNA levels were highest in the normal terminal ileum compared to the duodenum and jejunum.
  • DPP IV mRNA levels significantly decreased in the terminal ileum 2, 4, and 7 days after MSBR.

Conclusions:

  • Decreased DPP IV gene expression post-MSBR may enhance GLP-2's effects on mucosal growth.
  • GLP-2 may hold greater therapeutic potential than currently anticipated for human conditions.