An improved rat model for chronic inflammatory bowel disease
Article
Article Title | An improved rat model for chronic inflammatory bowel disease |
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ERA Journal ID | 15016 |
Article Category | Article |
Authors | Ghattamaneni, Naga K. R. (Animator), Panchal, Sunil K. (Author) and Brown, Lindsay (Author) |
Journal Title | Pharmacological Reports |
Journal Citation | 71 (1), pp. 149-155 |
Number of Pages | 7 |
Year | 2019 |
Place of Publication | Poland |
ISSN | 1230-6002 |
1734-1140 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.pharep.2018.10.006 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S1734114018303621 |
Abstract | Background: Inflammatory bowel disease (IBD) is an important cause of chronic disability in humans. Methods We characterized a model of chronic IBD in young male Wistar rats by administering dextran sodium sulfate (DSS: 0%, 0.25%, 0.5%, or 1% in drinking water) for six weeks, with 0.5% DSS for twelve weeks, following DSS cessation or together with treatment with sulfasalazine for the last 6 weeks. We measured gastrointestinal characteristics including stool consistency, blood in stools, small intestine and colon length, intestinal transit and permeability, and gut microbiota, as well as extra-intestinal parameters including oral glucose tolerance, systolic blood pressure, fat and lean mass, and left ventricular stiffness. Results: At 6 weeks, 0.25-1% DSS produced gastrointestinal changes as diarrhea and blood in stools. At 12 weeks, 0.5% DSS produced chronic and sustained gastrointestinal changes, with marked infiltration of inflammatory cells throughout the gastrointestinal tract and crypt distortion. Firmicutes increased and Bacteroidetes and Actinobacteria decreased in DSS-treated rats. Changes were reversed by DSS cessation or sulfasalazine treatment. Gastrointestinal permeability and extra-intestinal parameters did not change, so DSS changes were limited to the gastrointestinal tract. Conclusions: Chronic 0.5% DSS produces selective and reversible gastrointestinal changes, providing an improved chronic model in rats that mimics human IBD for testing new interventions. |
Keywords | Dextran sodium sulfate; inflammatory bowel disease; rats; sulfasalazine; methods |
ANZSRC Field of Research 2020 | 321004. Nutritional science |
321401. Basic pharmacology | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Centre for Health Research |
Functional Foods Research Group | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4zx5/an-improved-rat-model-for-chronic-inflammatory-bowel-disease
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