Multi-omic Analysis of the Interaction between Clostridioides difficile Infection and Pediatric Inflammatory Bowel Disease.

TitleMulti-omic Analysis of the Interaction between Clostridioides difficile Infection and Pediatric Inflammatory Bowel Disease.
Publication TypeJournal Article
Year of Publication2020
AuthorsBushman FD, Conrad M, Ren Y, Zhao C, Gu C, Petucci C, Kim M-S, Abbas A, Downes KJ, Devas N, Mattei LM, Breton J, Kelsen J, Marakos S, Galgano A, Kachelries K, Erlichman J, Hart JL, Moraskie M, Kim D, Zhang H, Hofstaedter CE, Wu GD, Lewis JD, Zackular JP, Li H, Bittinger K, Baldassano R
JournalCell Host Microbe
Date Published2020 Aug 11
ISSN1934-6069
Abstract

Children with inflammatory bowel diseases (IBD) are particularly vulnerable to infection with Clostridioides difficile (CDI). IBD and IBD + CDI have overlapping symptoms but respond to distinctive treatments, highlighting the need for diagnostic biomarkers. Here, we studied pediatric patients with IBD and IBD + CDI, comparing longitudinal data on the gut microbiome, metabolome, and other measures. The microbiome is dysbiotic and heterogeneous in both disease states, but the metabolome reveals disease-specific patterns. The IBD group shows increased concentrations of markers of inflammation and tissue damage compared with healthy controls, and metabolic changes associate with susceptibility to CDI. In IBD + CDI, we detect both metabolites associated with inflammation/tissue damage and fermentation products produced by C. difficile. The most discriminating metabolite found is isocaproyltaurine, a covalent conjugate of a distinctive C. difficile fermentation product (isocaproate) and an amino acid associated with tissue damage (taurine), which may be useful as a joint marker of the two disease processes.

DOI10.1016/j.chom.2020.07.020
Alternate JournalCell Host Microbe
PubMed ID32822584