Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 357638
Title Gene expression response of the rat small intestine following oral salmonella infection
Author(s) Rodenburg, G.C.H.; Bovee-Oudenhoven, I.M.J.; Kramer, E.H.M.; Meer, R. van der; Keijer, J.
Source Physiological genomics 30 (2007). - ISSN 1094-8341 - p. 123 - 133.
DOI https://doi.org/10.1152/physiolgenomics.00190.2006
Department(s) Chair Nutrition and Health over the Lifecourse
RIKILT - Business Unit Safety & Health
Publication type Refereed Article in a scientific journal
Publication year 2007
Keyword(s) dietary fructo-oligosaccharides - inflammatory-bowel-disease - enterotoxigenic escherichia-coli - epithelial-cells - bacterial survival - immune-response - molecular-basis - crohns-disease - animal-models - typhoid-fever
Abstract Data on the molecular response of the intestine to the food-borne pathogen Salmonella are derived from in vitro studies, whereas in vivo data are lacking. We performed an oral S. enteritidis infection study in Wistar rats to obtain insight in the in vivo response in time. Expression profiles of ileal mucosa (IM) and Peyer's patches (PP) were generated using DNA microarrays at days 1, 3, and 6 postinfection. An overview of Salmonella-regulated processes was obtained and confirmed by quantitative real-time PCR on pooled and individual samples. Salmonella-induced gene expression responses in vivo are fewer and smaller than observed in vitro, and the response develops over a longer period of time. Few effects are seen at day 1 and mainly occur in IM, suggesting the mucosa as the primary site of invasion. Later, a bigger response is observed, especially in PP. Decreased expression of anti-microbial peptides genes (in IM at day 1) suggests inhibition of this process by Salmonella. Newly identified target processes are carbohydrate transport (increased expression in IM at day 1) and phase I and phase II detoxification (decreased expression at days 3 and 6). Increase of cytokine and chemokine expression occurs at later time points, both in PP and IM. Pancreatitis-associated protein, lipocalin 2, and calprotectin, potential inflammatory marker proteins, showed induced expression from day 3 onward. We conclude that the in vivo gene expression response of the ileum to Salmonella differs to a large extent from the response seen in vitro.
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