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Lancet. 1995 Jun 17;345(8964):1525-8.

Long-term sequelae of Helicobacter pylori gastritis.

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Department of Gastroenterology, Free University Hospital, Amsterdam, Netherlands.


Chronic Helicobacter pylori gastritis has been put forward as a risk factor for development of gastric mucosal atrophy and gastric cancer. The purpose of our study was to investigate the long-term effects of H pylori gastritis on the gastric mucosa. We prospectively studied 49 subjects negative for H pylori and 58 positive subjects for a mean follow-up of 11.5 years (range 10-13 years). Serum samples were obtained at the initial and follow-up visits for determination of H pylori IgG antibodies. Gastroscopies with biopsy sampling were done in all patients at both visits. Biopsy specimens were used for assessment of H pylori infection and histology. Development of atrophic gastritis and intestinal metaplasia occurred in 2 (4%) uninfected and 16 (28%) infected subjects. Regression of atrophy was noted in 4 (7%) infected subjects. Development of atrophic gastritis and intestinal metaplasia was significantly associated with H pylori infection (p = 0.0014; odds ratio 9.0, 95% CI 1.9-41.3). The proportion of atrophic gastritis in the study population showed an annual increase of 1.15% (0.5-1.8%). We conclude that H pylori infection is a significant risk factor for development of atrophic gastritis and intestinal metaplasia. Our findings support strongly the causative role of this infection in gastric carcinogenesis.

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