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Helicobacter pylori and Related Virulence Factors for Gastrointestinal Diseases

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Gastric Cancer

Abstract

Helicobacter pylori—a worldwide spread bacterium—is still infecting more than half of humans. This bacterium is closely associated with serious human diseases such as gastric cancer. As only few infected humans develop the most severe clinical outcomes, there have been important efforts for identifying and understanding factors predicting bacterial virulence. Here, we discuss main features of virulence factors that have emerged from decades of intensive researches in the world. From tens of candidate virulent factors found out by epidemiological studies and explored by laboratory experiments, the cag pathogenicity island, the VacA, and several outer membrane proteins such as BabA are so far the most studied. Many other candidate virulent factors such as the serine protease HtrA and H. pylori-related prophages have been identified recently and would be attracting an increasing interest. Topics regarding the virulence of H. pylori species have accounted for the most dynamic among related researches, especially as access to genome sequences is increasing. Therefore, we will attempt to highlight the most recent findings in direct line with each discussed H. pylori virulence factor.

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Kabamba, E.T., Yamaoka, Y. (2019). Helicobacter pylori and Related Virulence Factors for Gastrointestinal Diseases. In: Shiotani, A. (eds) Gastric Cancer. Springer, Singapore. https://doi.org/10.1007/978-981-13-1120-8_3

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