Site-specific and temporal effects of apraglutide, a novel long-acting glucagon-like peptide-2 receptor agonist, on intestinal growth in mice

S. E. Martchenko, M. E. Sweeney, V. Dimitriadou, J. A. Murray, P. L. Brubaker

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Long-acting glucagon-like peptide-2 receptor (GLP-2R) agonists are well-established to increase intestinal growth in rodents and, most notably, humans with short bowel syndrome. Most of the trophic effects of GLP-2R agonists are reported to be mediated through increased growth of the crypt-villus axis, resulting in enhanced mucosal mass and improved intestinal function. The present study examined the effects of apraglutide, a novel GLP-2R agonist, on the growth of the small intestine and colon after 3, 7, and 10 weeks of treatment in male and female mice. Apraglutide (3 mg/kg; three times per week) significantly increased small intestinal weight (P < 0.001) and length (P < 0.001) after 3 weeks of administration, with a further increase in effectiveness after 10 weeks (P < 0.01). Crypt depth and villus height were both markedly increased after 3 weeks of apraglutide administration (P < 0.001) but did not show any further increase with duration of treatment, whereas crypt number and intestinal circumference were increased after 7 and 10 weeks (P < 0.01) but not after 3 weeks of apraglutide treatment. Both the weight and the length of the colon were also enhanced by apraglutide treatment for 3 weeks (P < 0.001), and these effects were maintained but did not improve further with continued apraglutide administration. The results of this study demonstrate that the novel, long-acting GLP-2R agonist, apraglutide, demonstrates an unexpected marked ability to increase intestinal length as well as exert timeand location-dependent specificity in its intestinotrophic actions.

Original languageEnglish (US)
Pages (from-to)347-352
Number of pages6
JournalJournal of Pharmacology and Experimental Therapeutics
Volume373
Issue number3
DOIs
StatePublished - Jun 2020

ASJC Scopus subject areas

  • Molecular Medicine
  • Pharmacology

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