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- W2608087718 abstract "ABSTRACT Background: In polarized cells, ganglioside location determines ganglioside function. Diet alters ganglioside content and composition in cell membranes. Ganglioside acts as a receptor for Helicobacter pylori. H pylori infects the stomach epithelium and may cause peptic ulcer disease and gastric cancer. The present study used purified gangliosides to modify the ganglioside composition of human gastric epithelial cells in vitro to reduce H pylori adhesion. Methods: A human gastric epithelial cell line (NCI-N87) was cultured with a ganglioside mix or with pure ganglioside (GM3 or GD3) at different concentrations (0–30 μg/mL) and ganglioside membrane content of gastric cells was determined after 48 hours. LC/triple quadrupole MS was used to analyse ganglioside concentration. H pylori was inoculated into the culture media of gastric cells previously treated with gangliosides GM3 or GD3 or a combination of GM3 and GD3. Results: GD3 and GM3 content increased in the plasma membrane in a dose-dependent manner. Gastric cells treated with GD3 showed more GM3 content than GD3 ( P < 0.01). Ganglioside content was modified in the apical membrane, but GM3 and GD3 were also found in the basolateral membrane after treatments. Gastric cells treated with GM3, GD3 or the combination of GM3:GD3 decreased H pylori adhesion to gastric cells at all ganglioside concentrations tested by 80% compared with untreated gastric cells ( P < 0.05). Conclusions: These observations suggest that GD3 and GM3 present in the stomach lumen may be taken up into the apical gastric membrane and decrease H pylori adhesion to the epithelium." @default.
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- W2608087718 date "2017-10-01" @default.
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- W2608087718 title "Modification of Ganglioside Content of Human Gastric Epithelial Cell Membrane Decreases Helicobacter pylori Adhesion" @default.
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- W2608087718 doi "https://doi.org/10.1097/mpg.0000000000001612" @default.
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