Alterations in gastric mucosal lineages before or after acute oxyntic atrophy in gastrin receptor and H2 histamine receptor-deficient mice

Susumu Aikou, Yasushi Fukushima, Masako Ogawa, Koji Nozaki, Toshihito Saito, Toshimitsu Matsui, James R. Goldenring, Michio Kaminishi, Sachiyo Nomura

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Spasmolytic polypeptide (SP/TFF2)-expressing metaplasia (SPEM) is induced by oxyntic atrophy and is known as a precancerous or paracancerous lesion. We seek to determine whether the gastrin receptor or H2 histamine receptor influence the development of SPEM. DMP-777 was administered to gastrin receptor and/or H2 receptor-deficient mice and wild-type mice. Gastric mucosal lineage changes were analyzed. The mucosa from double knockout mice and H2 receptor knockout mice contained elevated numbers of dual TFF2 and intrinsic factor immunoreactive cells even before DMP-777 treatment. All genotypes of mice showed SPEM after 7-day treatment. In all types of knockout mice, the number of TFF2 immunoreactive cells remained elevated after cessation of treatment. The H2 receptor and gastrin receptor do not affect emergence of SPEM. However, it is suggested that the absence of H 2 receptor signaling causes a delay in the maturation of chief cells from mucous neck cells.

Original languageEnglish
Pages (from-to)1625-1635
Number of pages11
JournalDigestive Diseases and Sciences
Volume54
Issue number8
DOIs
StatePublished - Aug 2009
Externally publishedYes

Keywords

  • Chief cells
  • DMP-777
  • Gastric cancer
  • Metaplasia
  • Mucous neck cells
  • Trefoil factor 2

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