Gastric mucin expression in Helicobacter pylori -related, nonsteroidal anti-inflammatory drug-related and idiopathic ulcers

Doron Boltin, Marisa Halpern, Zohar Levi, Alex Vilkin, Sara Morgenstern, Samuel B. Ho, Yaron Niv

Research output: Contribution to journalArticlepeer-review

Abstract

AIM: To determine the pattern of secreted mucin expression in Helicobacter pylori (H. pylori)-related, nonsteroidal anti-inflammatory drug (NSAID)-related and idiopathic gastric ulcers. METHODS: We randomly selected 92 patients with H. pylori -associated (n = 30), NSAID-associated (n = 18), combined H. pylori and NSAID-associated gastric ulcers (n = 24), and patients with idiopathic gastric ulcers (n = 20). Immunohistochemistry for T-cell CD4/CD8, and for mucin 5AC (MUC5AC) and mucin 6 (MUC6), was performed on sections of the mucosa from the ulcer margin. Inflammation score was assessed according to the Sydney system. RESULTS: MUC5AC was expressed on the surface epithelium (98.9%) and neck glands (98.9%) with minimal expression in the deep glands (6.5%). MUC6 was strongly expressed in the deep glands (97.8%), variable in the neck glands (19.6%) and absent in the surface epithelium (0%). The pattern of mucin expression in idiopathic ulcer margins was not different from the expression in ulcers associated with H. pylori, NSAIDs, or combined H. pylori and NSAIDs. CD4/CD8 ratio was higher in H. pylori -positive patients (P = 0.009). Idiopathic ulcers are associated with hospitalized patients and have higher bleeding and mortality rates. CONCLUSION: Idiopathic ulcers have a unique clinical profile. Gastric mucin expression in idiopathic gastric ulcers is unchanged compared with H. pylori and/or NSAID-associated ulcers.

Original languageEnglish
Pages (from-to)4597-4603
Number of pages7
JournalWorld Journal of Gastroenterology
Volume18
Issue number33
DOIs
StatePublished - 2012

Keywords

  • Helicobacter pylori
  • Idiopathic ulcer
  • Mucin
  • Mucin 5AC
  • Mucin 6

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