Antigastric autoantibodies in Helicobacter pylori gastritis: prevalence, in-situ binding sites and clues for clinical relevance (original) (raw)

Abstract

Colonization of human gastric mucosa with Helicobacter pylori leads to chronic active gastritis and induces the occurrence of an acquired mucosa-associated lymphoid tissue (MALT) in the stomach. This remodelling of the gastric mucosa together with chronic antigen persistence may induce autoimmune reactions. The aim of this study was to investigate humoral autoimmune reactions to human gastric mucosa in H. pylori gastritis and their clinical relevance. Sera from patients with dyspeptic symptoms were tested for presence of IgG immunoglobulins against H. pylori. Gastric infection with H. pylori and alterations of gastric mucosa were demonstrated by histological examination of gastric biopsy specimens. All sera were tested for reactivity against human gastric mucosa by immunohistochemistry. Two different in-situ binding sites of antigastric autoantibodies were observed. Binding to canalicular structures within parietal cells was significantly correlated with antibodies to H. pylori, elevated basal gastrin levels and atrophy of gastric corpus glands. Our data indicate that autoimmune reactions to antigens in the human gastric mucosa occur in H. pylori gastritis and that they may play a role in the pathogenesis of the disease.

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Autoimmune gastritis

Article 09 July 2020

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Authors and Affiliations

  1. Institute of Pathology, University of Erlangen-Nürnberg, Krankenhausstrasse 8-10, D-91054, Erlangen, Germany
    G. Faller, H. Steininger & T. Kirchner
  2. Institute of Pathology, University of Würzburg, Würzburg, Germany
    M. Eck
  3. Department of Internal Medicine I, University of Erlangen-Nürnberg, Erlangen, Germany
    J. Hensen & E. G. Hahn

Authors

  1. G. Faller
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  2. H. Steininger
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  3. T. Kirchner
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  4. M. Eck
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  5. J. Hensen
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  6. E. G. Hahn
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Faller, G., Steininger, H., Kirchner, T. et al. Antigastric autoantibodies in Helicobacter pylori gastritis: prevalence, in-situ binding sites and clues for clinical relevance.Vichows Archiv A Pathol Anat 427, 483–486 (1996). https://doi.org/10.1007/BF00199508

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