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The TNF mouse as a model of intestinal fibrosis. | LitMetric

AI Article Synopsis

Article Abstract

Background & Aims: Crohn's disease (CD) is a highly morbid chronic inflammatory disease. The majority of CD patients also develop fibrostenosing complications. Despite this, there are no medical therapies for intestinal fibrosis. This is in part due to lack of high-fidelity biomimetic models to enhance understanding and drug development. There is a need to develop models of inflammatory bowel disease-related intestinal fibrosis. We sought to determine if the TNF mouse, a model of ileal inflammation, may also develop intestinal fibrosis.

Methods: Several clinically relevant outcomes were studied including features of structural fibrosis, histological fibrosis, and gene expression. These include the use of a luminal casting technique we developed, traditional histological outcomes, use of second harmonic imaging, and quantitative PCR. These features were studied in aged TNF mice as well as in cohorts of numerous ages.

Results: At ages of 24+ weeks, TNF mice develop structural, histological, and genetic changes of ileal fibrosis. Genetic expression profiles have changes as early as six weeks, followed by histological changes occurring as early as 14-15 weeks, and overt structural fibrosis delayed until after 24 weeks.

Discussion: The TNF mouse is a viable and highly tractable model of intestinal fibrosis. This model and the techniques employed can be leveraged for both mechanistic studies and therapeutic development for the treatment of intestinal fibrosis.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9882211PMC
http://dx.doi.org/10.1101/2023.01.13.523973DOI Listing

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