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  • Title: Antigastric autoantibodies and gastric secretory function in Helicobacter pylori-infected patients with duodenal ulcer and non-ulcer dyspepsia.
    Author: Faller G, Winter M, Steininger H, Konturek P, Konturek SJ, Kirchner T.
    Journal: Scand J Gastroenterol; 1998 Mar; 33(3):276-82. PubMed ID: 9548621.
    Abstract:
    BACKGROUND: Autoantibodies against epitopes located at the canaliculi of human parietal cells occur in about 30% of Helicobacter pylori-infected patients. This has led to the hypothesis that gastric secretory function could be inhibited by anticanalicular autoantibodies in H. pylori gastritis. METHODS: Forty-four H. pylori-infected patients with and without duodenal ulcers were screened for anticanalicular autoantibodies by means of immunohistochemistry. Plasma gastrin levels and basal and maximal gastric acid output were determined. RESULTS: Fasting gastrin levels were significantly increased in the group with anticanalicular autoantibodies. In the group of patients with non-ulcer dyspepsia the presence of anticanalicular autoantibodies was significantly correlated with an impaired basal acid secretion. CONCLUSIONS: Antigastric autoimmunity in H. pylori gastritis seems to be relevant for gastric hyposecretion either directly by inhibiting the proton pump or indirectly through the development of gastric mucosa atrophy.
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