Titel
Intestinal Microbiota Signatures Associated with Inflammation History in Mice Experiencing Recurring Colitis
Autor*in
David Berry
Autor*in
Orest Kuzyk
Autor*in
Isabella Rauch
Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories
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Abstract
Acute colitis causes alterations in the intestinal microbiota, but the microbiota is thought to recover after such events. Extreme microbiota alterations are characteristic of human chronic inflammatory bowel diseases, although alterations reported in different studies are divergent and sometimes even contradictory. To better understand the impact of periodic disturbances on the intestinal microbiota and its compositional difference between acute and relapsing colitis, we investigated the beginnings of recurrent inflammation using the dextran sodium sulfate (DSS) mouse model of chemically induced colitis. Using bacterial 16S rRNA gene-targeted pyrosequencing as well as quantitative fluorescence in situ hybridization, we profiled the intestinal and stool microbiota of mice over the course of three rounds of DSS-induced colitis and recovery. We found that characteristic inflammation-associated microbiota could be detected in recovery-phase mice. Successive inflammation episodes further drove the microbiota into an increasingly altered composition post-inflammation, and signatures of colitis history were detectable in the microbiota more sensitively than by pathology analysis. Bacterial indicators of murine colitis history were identified in intestinal and stool samples, with a high degree of consistency between both sample types. Stool may therefore be a promising non-invasive source of bacterial biomarkers that are highly sensitive to inflammation state and history.
Stichwort
DSScolitisIBDFISHMucispirillumAkkermansiaBacteroides
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:448064
Erschienen in
Titel
Frontiers in Microbiology
Band
6
Verlag
Frontiers Media SA
Erscheinungsdatum
2015
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