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Surgical resection of the ileum, cecum, and proximal right colon (ICR) is common in the management of Crohn's disease, yet little is known about the effect of active inflammation on the adaptive response following intestinal loss. We recently developed a surgical model of ICR in germ-free (GF) IL-10 null mice that develop small intestinal inflammation only when mice undergo conventionalization with...
Bile acid (BA) reclamation following ileo-cecal resection (ICR) may prevent colonic mucosa from chronic injury. In this study, we hypothesized that in a murine model of ICR the remnant colon would upregulate the cellular machinery necessary for BA reclamation and would do so in an FXR- and bacteria-dependent manner.Conventional (WT), conventional FXR knockout (FXR null) and germ-free (GF) mice were...
Background & Aims: Dendritic cells (DCs) recognize and respond to microbial structures using pattern recognition receptors, including Toll-like receptors (TLRs). In the intestine, DCs are pivotal in tolerance induction and direct the differentiation of T cells. We aimed to identify changes in intestinal DCs that may underlie the dysregulated immune response to enteric bacteria that occurs in patients...
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