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Updated: Oct 5, 2026

The Citrobacter rodentium Mouse Model: Studying Pathogen and Host Contributions to Infectious Colitis
Published on: February 19, 2013
Enteropathogenic Escherichia coli and ulcerative colitis in cotton-top tamarins (Saguinus oedipus)
K G Mansfield1, K C Lin, D Xia
1New England Regional Primate Research Center, Harvard Medical School, Southborough, MA 01772-9012, USA. Keith_Mansfield@HMS.Harvard.edu
Abstract:
The cotton-top tamarin (CTT; Saguinus oedipus) is an endangered New World primate that develops a highly prevalent idiopathic colitis resembling human ulcerative colitis. This study found that enteropathogenic Escherichia coli (EPEC) caused acute colitis in CTTs, which was associated with ulcerative colitis. EPEC clinical isolates revealed localized adherence patterns by HEp-2 assay and were devoid of Shiga-toxin production. Sequencing of the eae gene (GenBank accession no. AF319597) revealed 99.2% identity to sequences of human isolates (GenBank AF116899) and corresponded to the epsilon intimin gene subtype. Detection of intimin sequences by polymerase chain reaction on primary fecal cultures indicated widespread EPEC infection in the CTT colony. Prospective analysis revealed that animals with fecal cultures positive for intimin sequences had a higher frequency of active colitis (75.0% vs. 27.2%; P<.005, chi(2) test) and higher histological scores of colonic inflammation (0.875 vs. 0.455, respectively; P<.05, Mann-Whitney rank sum test).
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