| First Author | Fox JG | Year | 2007 |
| Journal | Am J Pathol | Volume | 171 |
| Issue | 5 | Pages | 1520-8 |
| PubMed ID | 17982128 | Mgi Jnum | J:127260 |
| Mgi Id | MGI:3763484 | Doi | 10.2353/ajpath.2007.070249 |
| Citation | Fox JG, et al. (2007) Accelerated progression of gastritis to dysplasia in the pyloric antrum of TFF2 -/- C57BL6 x Sv129 Helicobacter pylori-infected mice. Am J Pathol 171(5):1520-8 |
| abstractText | Trefoil factor family 2 (TFF2) is up-regulated in Helicobacter spp.-infected gastric tissues of both humans and mice. To ascertain the biological effects of TFF2 in vivo, TFF2(-/-) C57BL/6 x Sv129 and wild-type (WT) C57BL/6 x Sv129 mice were orally infected with Helicobacter pylori SS1. Mice were evaluated for gastric H. pylori colonization, pathology, and cytokine profiles at 6 and 19 months post inoculation (pi). At 6 months pi, there was a significant difference (P < 0.05) for epithelial criteria (mucosal defects, atrophy, hyperplasia, pseudopyloric metaplasia, and dysplasia) in the corpus of TFF2(-/-) versus WT mice. At 19 months pi, a similar statistical difference in epithelial parameters was noted in the antrum of TFF2(-/-) versus WT mice (P < 0.01). All of the TFF2(-/-) H. pylori-infected mice had high-grade antral dysplasia, including gastric intraepithelial neoplasia, which was statistically significant (P < 0.05) compared with the infected WT mice. Levels of interferon-gamma were markedly elevated in the gastric mucosa of infected TFF2(-/-) mice at both 6 and 19 months pi. TFF2 provided a cytoprotective and/or anti-inflammatory effect against the progression of premalignant lesions of the gastric corpus at 6 months pi and in the pyloric antrum in H. pylori-infected mice at 19 months pi. These data support a protective role for TFF2 in part by modulating levels of gastric interferon-gamma in the development of H. pylori-associated premalignancy of the distal stomach. |
