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• W2801905390 abstract "Abstract Background Our previous works have demonstrated that Helicobacter pylori ( Hp ) infection can alter histone H3 serine 10 phosphorylation status in gastric epithelial cells. However, whether Helicobacter pylori ‐induced histone H3 serine 10 phosphorylation participates in gastric carcinogenesis is unknown. We investigate the expression of histone H3 serine 10 phosphorylation in various stages of gastric disease and explore its clinical implication. Materials and Methods Stomach biopsy samples from 129 patients were collected and stained with histone H3 serine 10 phosphorylation, Ki67, and Helicobacter pylori by immunohistochemistry staining, expressed as labeling index. They were categorized into nonatrophic gastritis, chronic atrophic gastritis, intestinal metaplasia, low‐grade intraepithelial neoplasia, high‐grade intraepithelial neoplasia, and intestinal‐type gastric cancer groups. Helicobacter pylori infection was determined by either 13 C‐urea breath test or immunohistochemistry staining. Results In Helicobacter pylori ‐negative patients, labeling index of histone H3 serine 10 phosphorylation was gradually increased in nonatrophic gastritis, chronic atrophic gastritis, intestinal metaplasia groups, peaked at low‐grade intraepithelial neoplasia, and declined in high‐grade intraepithelial neoplasia and gastric cancer groups. In Helicobacter pylori ‐infected patients, labeling index of histone H3 serine 10 phosphorylation followed the similar pattern as above, with increased expression over the corresponding Helicobacter pylori ‐negative controls except in nonatrophic gastritis patient whose labeling index was decreased when compared with Helicobacter pylori ‐negative control. Labeling index of Ki67 in Helicobacter pylori ‐negative groups was higher in gastric cancer than chronic atrophic gastritis and low‐grade intraepithelial neoplasia groups, and higher in intestinal metaplasia group compared with chronic atrophic gastritis group. In Helicobacter pylori ‐positive groups, Ki67 labeling index was increased stepwise from nonatrophic gastritis to gastric cancer except slightly decrease in chronic atrophic gastritis group. In addition, we noted that histone H3 serine 10 phosphorylation staining is accompanied with its location changes from gastric gland bottom expanded to whole gland as disease stage progress. Conclusions These results indicate that stepwise gastric carcinogenesis is associated with altered histone H3 serine 10 phosphorylation, Helicobacter pylori infection enhances histone H3 serine 10 phosphorylation expression in these processes; it is also accompanied with histone H3 serine 10 phosphorylation location change from gland bottom staining expand to whole gland expression. The results suggest that epigenetic dysregulation may play important roles in Helicobacter pylori ‐induced gastric cancer." @default.
• W2801905390 created "2018-05-17" @default.
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• W2801905390 date "2018-04-15" @default.
• W2801905390 modified "2023-10-13" @default.
• W2801905390 title "<i>Helicobacter pylori</i> infection-induced H3Ser10 phosphorylation in stepwise gastric carcinogenesis and its clinical implications" @default.
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• W2801905390 doi "https://doi.org/10.1111/hel.12486" @default.
• W2801905390 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6001454" @default.
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