Iron Deficiency and IL1β Polymorphisms in Helicobacter pylori-infected Children

Abstract

© 2016 John Wiley & Sons Ltd.Background: Helicobacter pylori infection has been associated with an imbalance of iron homeostasis. IL-1β has been related with iron absorption disturbances through a variety of mechanisms. The aim of this study was to evaluate the presence of polymorphic variants for IL-1β cluster and gastric IL1β mRNA expression in H. pylori-infected children and their relationship with hypochlorhydria and iron deficiency (ID). Patients and Methods: Prospective study of 123 symptomatic children. At endoscopy, antral biopsies were taken for urease test, pathology and culture and blood for analysis of ferritin, transferrin, serum iron, and total iron-binding capacity. Polymorphisms in the IL-1β cluster (positions -511, -31, +3954, ILRN) were determined by PCR-RFLP. Gastric mucosal expression of IL-1β mRNA was determined by RT-PCR. Results: After exclusions, of 105 patients, 33 (31.4%) were H. pylori positive. Nine (8.6%) children were classified as iron deficient (ID). Hel