Helicobacter pylori and gastric microbiota homeostasis: progress and prospects.

, a Gram-negative microaerobic bacteria belonging to the phylum Proteobacteria, can colonize in the stomach and duodenum, and cause a series of gastrointestinal diseases such as gastritis, gastric ulcer and even gastric cancer. At present, the high diversity of the microorganisms in the stomach has been confirmed with culture-independent methods; some researchers have also studied the stomach microbiota composition at different stages of carcinogenesis. Here, we mainly review the possible role of -mediated microbiota changes in the occurrence and development of gastric cancer to provide new ideas for preventing infection and regulating microecological imbalance.