PMID: 29483497Feb 28, 2018Paper

Lectin binding patterns in normal, dysplastic and Helicobacter pylori infected gastric mucosa

Experimental Oncology
S VernygorodskyiD Suhan

Abstract

To analyze the glycoprotein binding sites of the gastric mucosa and its secreted mucus using lectin histochemistry in patients with chronic non-atrophic gastritis (CNAG) associated or not-associated with Helicobacter pylori infection with or without dysplasia. In order to identify the areas with glycoconjugates expression in gastric mucosa, 6 lectins (Canavalia ensiformis agglutinin - Con A, Sambucus nigra agglutinin - SNA, wheat germ agglutinin - WGA, soybean agglutinin - SBA, Helix pomatia agglutinin - HPA, peanut agglutinin - PNA) were used. Carbohydrate determinants were visualized according to the lectin-peroxidase-diaminobenzidine staining protocol. Biopsy material was obtained and processed by conventional histological methods. The samples from 84 patients (54 with CNAG) with low (n = 34) and high grade (n = 20) dysplasia, 38 patients were H. pylori-infected and 26 patients - H. pylori-noninfected) were used. The comparison group included 30 persons with CNAG without dysplasia (16 patients H. pylori-infected and 14 - noninfected). In comparison to normal gastric mucosa, a low affinity of Con A was shown in 80% of patients with non-infected CNAG and 90% of H. pylori associated CNAG. In 70% of H. pylori-infected patients w...Continue Reading

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