Abstract
Serum pepsinogens and gastrin have been proposed as markers of gastritis, but have seldom been studied in children. In this study the aim was to identify host- and Helicobacter pylori-related factors linked to variations in serum gastrin, PGI, PGII, and to evaluate the potential of these biomarkers for diagnosing gastritis, whether H. pylori-associated or not. Ninety-two dyspeptic children referred for endoscopy (peptic ulcer exclusion) were included in the study. H. pylori status (urease, culture, histology) was assessed, and genotype determined (PCR) in H. pylori-positive subjects. Serum gastrin, PGI and PGII levels were measured by standard radioimmunoassay (RIA). PGI and PGII levels were significantly higher in H. pylori-positive subjects (p=0.007; p=0.012, respectively). Gastrin levels were significantly higher in H. pylori-negative subjects (p=0.035). PGI and PGII were associated significantly with higher antrum inflammation scores (p=0.002; p=0.016, respectively); only PGI was associated with age, after controlling for inflammation (p=0.033) and for activity (p=0.037). The contribution of virulence factors could not be assessed owing to the low number of virulent strains. After multivariate analysis, only antrum inflamma...Continue Reading
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