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Different expression of Helicobacter pylori gastritis in children: evidence for a specific pediatric disease?
1Department of Internal Medicine II, Klinikum Grosshadern, University of Munich, Germany.
Insights
Helicobacter pylori gastritis is more severe in children than in adults. This pediatric H. pylori gastritis presents with higher inflammation and colonization, suggesting a distinct disease presentation in younger individuals.
Area of Science:
- Gastroenterology
- Pediatric Medicine
- Infectious Diseases
Background:
- Helicobacter pylori infection is a primary cause of chronic active gastritis, persisting for most of a lifetime.
- Limited data exist on H. pylori gastritis concerning age-related differences.
- This study investigates age-specific features of H. pylori gastritis in children versus adults.
Purpose of the Study:
- To compare the characteristics of H. pylori gastritis in children with those in two adult age groups.
- To identify potential age-dependent variations in gastritis severity and associated parameters.
Main Methods:
- Compared 50 children (median age 11) with two adult groups (median ages 43 and 70).
- All patients had H. pylori gastritis unrelated to peptic ulcer disease.
- Evaluated gastritis parameters including degree, activity, H. pylori colonization, regenerative epithelium, mucous depletion, atrophic gastritis with intestinal metaplasia, and lymphoid follicles from antral and corpus biopsy specimens.
Main Results:
- Significant differences in gastritis parameters were observed between children and adults (p < .05).
- Children exhibited a higher expression of gastritis degree, activity, H. pylori colonization, regenerative epithelium, mucous depletion, and lymphoid follicles compared to adults.
- Atrophic gastritis with intestinal metaplasia was less frequent in children than in adults.
Conclusions:
- H. pylori gastritis, especially in the antrum, is more severe in childhood.
- This may be due to a child-specific immune response or a distinct pediatric disease presentation.
- H. pylori gastritis in children may be a nonatrophic, highly active form that evolves with host adaptation over time.
Background:
Infection with Helicobacter pylori causes active chronic gastritis. Once the infection is acquired, gastritis will persist for almost the rest of one's life. To date, very few data are available on H. pylori gastritis in relation to age. Therefore, we attempted to investigate whether H. pylori gastritis in children exhibits features different from H. pylori gastritis in adults of two different age groups.
Materials And Methods:
Fifty consecutive children with a median age of 11 years (range, 3-18 years) were compared with two groups of 50 adult patients, one group with a median age of 43 (range, 19-56 years) and another group with a median age of 70 years (range, 59-86 years). All patients had H. pylori gastritis unrelated to active peptic ulcer disease. Two biopsy specimens were taken from the antrum and two from the corpus, and the following gastritis parameters were evaluated: degree and activity of gastritis, H, pylori colonization, replacement of foveolar epithelium by regenerative epithelium, mucous depletion, presence of atrophic gastritis with intestinal metaplasia, and presence of lymphoid follicles.
Results:
Degree and activity of gastritis, extent of H. pylori colonization, degree of replacement by regenerative epithelium, extent of mucous depletion, degree of atrophic gastritis with intestinal metaplasia, and the presence of lymphoid follicles in the antrum, as well as the presence of lymphoid follicles in the corpus differed significantly (chi-square test: p < .05). All these differences--except the once frequent occurrence of atrophic gastritis with intestinal metaplasia in adults--were attributable to a higher expression of these gastritis parameters in children.
Conclusions:
We conclude that H. pylori gastritis, particularly in the antrum, is more severely expressed in childhood. One reason for this might be a child-specific immune response to an infection with H. pylori. Alternatively, infection may represent a pediatric disease characterized by a nonatrophic, highly expressed form of gastritis, which changes its appearance once the host becomes adapted over time.