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Phagocytosis and persistence of Helicobacter pylori Allen LACell Microbiol 2007[Apr]; 9 (4): 817-28Helicobacter pylori is a spiral-shaped, flagellated, microaerophilic Gram-negative bacterium that colonizes the gastric epithelium of humans. All persons infected with H. pylori have gastritis, and some will develop severe disease such as peptic ulcers or gastric cancer. A characteristic feature of this infection is the pronounced accumulation of phagocytes, particularly neutrophils, in the gastric mucosa. H. pylori thrives in a phagocyte-rich environment, and we describe here how this organism uses an array of novel virulence factors to manipulate chemotaxis, phagocytosis, membrane trafficking and the respiratory burst as a means to evade elimination by the innate immune response.|Animals[MESH]|Gastric Mucosa/immunology/metabolism/microbiology[MESH]|Gastrointestinal Tract/cytology/metabolism/microbiology[MESH]|Helicobacter Infections/immunology/microbiology/*physiopathology[MESH]|Helicobacter pylori/*growth & development/metabolism[MESH]|Humans[MESH]|Models, Biological[MESH]|Neutrophils/metabolism/physiology[MESH]|Phagocytosis/*physiology[MESH] |
