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FEMS Immunol Med Microbiol. 1999 Jun;24(2):233-8.

Changes in the mucosal expression of interleukin 15 in Helicobacter pylori-associated gastritis.

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  • 1Dipartimento di Medicina Sperimentale e Clinica, Universit√† di Catanzaro Magna Graecia, Italy.

Abstract

Transcripts for interleukin (IL) 15 were detected in the gastric mucosal samples of 5/5 (100%) patients with no evidence of Helicobacter pylori infection and in 4/14 (28%) H. pylori-infected patients (P< 0.05). Both IL-15 mRNA and IL-15 protein were detected in 1/6 (17%) patients who successfully underwent H. pylori eradication therapy, before treatment and in 5/6 (83%) cases after eradication. Even though a parallel significant (P < 0.03) improvement of gastritis score occurred after eradication, the severity of gastritis did not differ according to the mucosal IL-15 expression among H. pylori-infected patients, irrespective of the CagA serology. This study demonstrates, for the first time, that transcripts for IL-15 are expressed in the human gastric mucosa. Changes occurring during H. pylori colonisation and after eradication raise the hypothesis that H. pylori may down-regulate IL-15 expression in the gastric mucosa.

PMID:
10378426
[PubMed - indexed for MEDLINE]
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