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Inflammation and proliferation - a causal event of host response to Helicobacter pylori infection

Journal

MICROBIOLOGY-SGM
Volume 161, Issue -, Pages 1150-1160

Publisher

MICROBIOLOGY SOC
DOI: 10.1099/mic.0.000066

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Helicobacter pylori is a major aetiological agent in the development of various gastroduodenal diseases. Its persistence in gastric mucosa is determined by the interaction between various host, microbial and environmental factors. The bacterium colonizes the gastric epithelium and induces activation of various chemokine mediators, including NF kappa B, the master regulator of inflammation. H. pylori infection is also associated with an increase in expression of cell cycle regulators, thereby leading to mucosal cell hyper-proliferation. Thus, H. pylon-associated infections manifest activation of key host response events, which inadvertently could lead to the establishment of chronic infection and neoplastic progression. This article reviews and elaborates the current knowledge in H. pylon-induced activation of various host signalling pathways that could promote cancer development. Special focus is placed on the inflammatory and proliferative responses that could serve as suitable biomarkers of infection, since a sustained cell proliferation in an environment rich in inflammatory cells is characteristic in H. pylori-associated gastric malignancies. Here, the role of ERK and WNT signalling in H. pylori-induced activation of inflammatory and proliferative responses respectively is discussed in detail. An in depth analysis of the underlying signalling pathways and interacting partners causing alterations in these crucial. host responses could contribute to the development of successful therapeutic strategies for the prevention, management and treatment of H. pylori infection.

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