Decreased TFF2 expression in the gastric antrum in patients infected with CagA-Positive Helicobacter pylori

Regina Michelis, Shifra Sela, Wisam Sbeit, Hector I. Cohen, Ron Reshef

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Background: The trefoils factor family is a relatively new family of peptides. Their abundant expression in the epithelial cells of the gastrointestinal tract in the normal physiological state and in various ulcerative conditions suggests an important role in mucosal defense and repair. Infection with Helicobacter pylori interferes with normal mucosal activity. Objectives: To investigate whether H. pylori infection alters the expression of trefoils TFF1 and TFF2 in the gastric mucosa of patients with H. pylori-associated chronic active gastritis, positive or negative for the CagA strain. Methods: During investigation for dyspepsia, gastric biopsies and blood samples were obtained from patients who underwent upper gastrointestinal endoscopy. Rapid urease testing, histology for determination of H. pylori-associated CAG and Western analysis for TFF1 and TFF2 expression with antisera were performed. CagA state was determined using a commercial kit. Results: TFF2 expression was significantly reduced in both groups of patients with H. pylori-associated CAG compared to healthy patients without H. pylori infection, particularly in CagA-positive patients. TFF1 expression showed a tendency of reduction (not significant) in this group only. Conclusions: These results suggest that H. pylori-associated CAG has a deleterious effect on the expression of TFF2 in the gastric antrum. This reduced expression may contribute to the damage induced to the gastric mucosa by H. pylori.

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalIsrael Medical Association Journal
Issue number1
StatePublished - 2009
Externally publishedYes


  • CagA
  • Chronic active gastritis (CAG)
  • Helicobacter pylori
  • TFF1
  • TFF2


Dive into the research topics of 'Decreased TFF2 expression in the gastric antrum in patients infected with CagA-Positive Helicobacter pylori'. Together they form a unique fingerprint.

Cite this