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Helicobacter Species pp 175–188Cite as

Gastric Helicobacter spp. in Animal Models: Pathogenesis and Modulation by Extragastric Coinfections

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Part of the book series: Methods in Molecular Biology ((MIMB,volume 921))

Abstract

Animal models are used to study complex host, microbial, and environmental influences associated with gastric Helicobacter infection. Evidence that gastric helicobacters are pathogenic in animals first came from ferrets. Felids, nonhuman primates, and many other species also harbor stomach helicobacters. Today, mice are preferred by most researchers for scientific investigation because of cost-efficiencies, rapid reproduction, choice of laboratory reagents, and availability of genetically engineered models. Infection with Helicobacter felis or H. pylori Sydney strain-1 in appropriate mouse strains produces disease with remarkable similarities to H. pylori in humans. Due to recent advances in genetic engineering, in vivo imaging, and system-wide genomics and proteomics, these models will become even more widespread in the future. Recently, it has been shown that extragastric infections can dramatically affect the severity of disease induced by gastric Helicobacter spp. through heterologous immunity. These models provide proof-of-principle for the “African enigma” wherein gastric cancer is underrepresented in low-lying tropical countries with concurrently high H. pylori and internal parasite prevalence. Helicobacter gastritis and carcinogenesis in mouse models may be augmented or ameliorated by other infectious agents depending on the character of the invoked immune response. Knowledge gained from the Human Microbiome Project and other investigations is certain to shed new light on the influence of extragastric bacterial, viral, fungal, and parasitic coinfections on H. pylori-associated peptic ulcer disease and gastric adenocarcinoma.

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  1. Lineberger Comprehensive Cancer Center and Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA

    Arlin B. Rogers

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  1. Medical School, Dept. Medicine, University of Massachusetts, Plantation Street 364, Worcester, 01635, Massachusetts, USA

    JeanMarie Houghton

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Rogers, A.B. (2012). Gastric Helicobacter spp. in Animal Models: Pathogenesis and Modulation by Extragastric Coinfections. In: Houghton, J. (eds) Helicobacter Species. Methods in Molecular Biology, vol 921. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-62703-005-2_21

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