Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/27520
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Type: Journal article
Title: Development and resolution of experimental colitis in mice with targeted deletion of dipeptidyl peptidase IV
Author: Geier, M.
Tenikoff, D.
Yazbek, R.
McCaughan, G.
Abbott, C.
Howarth, G.
Citation: Journal of Cellular Physiology, 2005; 204(2):687-692
Publisher: Wiley-Liss
Issue Date: 2005
ISSN: 0021-9541
1097-4652
Statement of
Responsibility: 
Mark S. Geier, Danik Tenikoff, Roger Yazbeck, Geoffrey W. McCaughan, Catherine A. Abbott, Gordon S. Howarth
Abstract: Glucagon-like peptide-2 (GLP-2) is a potent intestinotrophic growth factor that enhances repair of damaged intestinal tissue. However, its bioactivity is limited by dipeptidyl peptidase IV (DPIV)-mediated degradation. We hypothesized that DPIV(-/-) mice would display an increased resistance to, and an enhanced recovery from, dextran sulfate sodium (DSS)-induced colitis compared to DPIV(+/+) mice. DPIV(+/+) and DPIV(-/-) mice consumed 2% DSS for 6 days, followed by a 15 day recovery period. Mice were killed at days 0, 3, 6, 9, 14, and 21 (n = 6-8) and the small intestine and colon removed for histological assessment of villus height, crypt depth, and crypt area. The epithelial cell proliferative labeling index was determined by proliferating cell nuclear antigen (PCNA) immunostaining. Small intestine, colon, and total body weight did not differ between DPIV(+/+) and DPIV(-/-) mice. Distal colon crypt depth did not differ significantly between DPIV(+/+) and DPIV(-/-) mice during the development of DSS-colitis or during the recovery phase. Similarly no significant effects were apparent on distal colon crypt area or PCNA labeling index between DPIV(+/+) and DPIV(-/-) during the development of and recovery from DSS-colitis. However, DPIV(-/-) mice still possessed significant levels of plasma DPIV-like activity. We conclude that loss of DPIV activity does not increase resistance to experimental colitis and hypothesize that other DPIV family members may also be involved in the cleavage of GLP-2.
Keywords: Colon
Animals
Mice, Inbred C57BL
Mice, Knockout
Mice
Colitis
Disease Progression
Body Weight
Dextran Sulfate
Proliferating Cell Nuclear Antigen
Organ Size
Gene Deletion
Dipeptidyl Peptidase 4
Description: The definitive version may be found at www.wiley.com
DOI: 10.1002/jcp.20333
Published version: http://dx.doi.org/10.1002/jcp.20333
Appears in Collections:Aurora harvest 2
Molecular and Biomedical Science publications

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