PubMed · 14897716
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D A H CHESS. 1951. Regional enteritis.. https://pubmed.ncbi.nlm.nih.gov/14897716/
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Exclusive enteral nutrition (EEN) is a first-line therapy for pediatric Crohn's disease (CD), but protective mechanisms remain unknown. We established a prospective pediatric cohort to characterize the function of fecal microbiota and metabolite changes of treatment-naive CD patients in response to EEN (German Clinical Trials DRKS00013306). Integrated multi-omics analysis identified network clusters from individually variable microbiome profiles, with Lachnospiraceae and medium-chain fatty acids as protective features. Bioorthogonal non-canonical amino acid tagging selectively identified bacterial species in response to medium-chain fatty acids. Metagenomic analysis identified high strain-level dynamics in response to EEN. Functional changes in diet-exposed fecal microbiota were further validated using gut chemostat cultures and microbiota transfer into germ-free Il10-deficient mice. Dietary model conditions induced individual patient-specific strain signatures to prevent or cause inflammatory bowel disease (IBD)-like inflammation in gnotobiotic mice. Hence, we provide evidence that EEN therapy operates through explicit functional changes of temporally and individually variable microbiome profiles.
PURPOSE: This study was designed to compare postoperative adverse events and functional outcomes after ileal pouch-anal anastomosis between patients with Crohn's disease and those with non-Crohn's disease diagnoses. METHODS: A literature search was performed to identify studies published between 1980 and 2005 comparing outcomes of patients undergoing ileal pouch-anal anastomosis for Crohn's disease, ulcerative colitis, and indeterminate colitis. Random-effect, meta-analytical techniques were used and sensitivity analysis was performed. RESULTS: Ten studies comprising 3,103 patients (Crohn's disease=225; ulcerative colitis=2,711; indeterminate colitis=167) were included. Patients with Crohn's disease developed more anastomotic strictures than non-Crohn's disease diagnoses (odds ratio, 2.12; P=0.05) and experienced pouch failure more frequently than patients with ulcerative colitis (Crohn's disease vs. ulcerative colitis: 32 vs. 4.8 percent, P<0.001; Crohn's disease vs. indeterminate colitis: 38 vs. 5 percent, P<0.001). Urgency was more common in Crohn's disease compared with non-Crohn's disease: 19 vs. 11 percent (P=0.02). Incontinence occurred more frequently in Crohn's disease compared with non-Crohn's disease patients: 19 vs. 10 percent (odds ratio, 2.4; P=0.01). Twenty-four-hour stool frequency did not differ significantly between Crohn's disease, ulcerative colitis, or indeterminate colitis. Patients with isolated colonic Crohn's disease were not significantly at increased risk of postoperative complications or pouch failure (P=0.06). CONCLUSIONS: Patients with Crohn's disease undergoing ileal pouch-anal anastomosis should be appropriately counseled toward poorer functional outcomes and higher failure compared with non-Crohn's disease patients. It maybe possible to preoperatively select patients with isolated colonic Crohn's disease who may benefit from ileal pouch-anal anastomosis with acceptable adverse outcomes.
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