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Increased gastric juice leukotriene B4, C4 and E4 concentrations in children with Helicobacter pylori colonization
Insights
Helicobacter pylori infection in children with abdominal pain is linked to higher levels of inflammatory leukotrienes (LTs) in gastric juice. This suggests LTs play a role in H. pylori-associated gastritis.
Area of Science:
- Gastroenterology
- Immunology
- Microbiology
Background:
- Inflammatory lipid mediators, specifically leukotrienes (LTs), are increasingly recognized for their role in Helicobacter pylori (H. pylori) infection.
- Recurrent abdominal pain in children is a common condition, and the underlying mechanisms are not always clear.
Purpose of the Study:
- To investigate the concentrations of leukotrienes (LTs) in gastric juice of children with recurrent abdominal pain.
- To determine if these lipid inflammatory mediators are involved in the pathophysiology of H. pylori infections.
Main Methods:
- Gastric juice and mucosal biopsy samples were collected endoscopically from 31 children with recurrent abdominal pain.
- H. pylori colonization was assessed using rapid urease tests and histopathology.
- Leukotriene levels (LTB4, LTC4, LT4) were quantified using high-performance liquid chromatography (HPLC) and radioimmunoassay (RIA).
Main Results:
- Gastric juice leukotriene levels (LTB4, LTC4, LT4) were significantly elevated in children with H. pylori colonization compared to those without.
- Histopathological examination confirmed gastritis in H. pylori-positive patients.
Conclusions:
- Increased levels of pro-inflammatory leukotrienes in the gastric environment are associated with H. pylori colonization.
- These findings suggest a potential role for leukotrienes in the pathogenesis of H. pylori-associated gastritis in children.
Abstract:
During recent years, the role of inflammatory lipid mediators in the pathophysiology of Helicobacter pylori (H. pylori) infections has been investigated in several studies. The concentrations of leukotrienes (LTs) in gastric juice from H. pylori positive (n = 13) and negative (n = 18) children with recurrent abdominal pain were studies in order to determine whether these lipid inflammatory mediators are involved in local and systemic biological actions. Gastric juice samples and biopsy specimens of mucosa were obtained endoscopically from 31 patients with recurrent abdominal pain for assessment of LTs and histopathological examination. In this study, all children with recurrent abdominal pain were investigated by rapid urease test and histological assessment for H. pylori colonization. Leukotriene levels were measured by high performance liquid chromatography (HPLC) and radioimmunoassay (RIA) in gastric juice samples. Gastric juice LTB4, LTC4, and LT4 levels were significantly higher in patients with H. pylori colonization than in children without H. pylori colonization. These results indicate that increased gastric content of proinflammatory mediators (LTB4, LTC4, and LT4) may be related to the pathogenesis of H. pylori-associated gastritis.