Article ; Online: Alterations in fecal β-defensin-3 secretion as a marker of instability of the gut microbiota.
2023 Volume 15, Issue 1, Page(s) 2233679
Abstract: Compositional changes in the microbiota (dysbiosis) may be a basis for Irritable Bowel Syndrome (IBS), but biomarkers are currently unavailable to direct microbiota-directed therapy. We therefore examined whether changes in fecal β-defensin could be a ... ...
| Abstract | Compositional changes in the microbiota (dysbiosis) may be a basis for Irritable Bowel Syndrome (IBS), but biomarkers are currently unavailable to direct microbiota-directed therapy. We therefore examined whether changes in fecal β-defensin could be a marker of dysbiosis in a murine model. Experimental dysbiosis was induced using four interventions relevant to IBS: a mix of antimicrobials, westernized diets (high-fat/high-sugar and high salt diets), or mild restraint stress. Fecal mouse β-defensin-3 and 16S rRNA-based microbiome profiles were assessed at baseline and during and following these interventions. Each intervention, except for mild restraint stress, altered compositional and diversity profiles of the microbiota. Exposure to antimicrobials or a high-fat/high-sugar diet, but not mild restraint stress, resulted in decreased fecal β-defensin-3 compared to baseline. In contrast, exposure to the high salt diet increased β-defensin-3 compared to baseline. Mice exposed to the mix of antimicrobials showed the largest compositional changes and the most significant correlations between β-defensin-3 levels and bacterial diversity. The high salt diet was also associated with significant correlations between changes in β-defensin-3 and bacterial diversity, and this was not accompanied by discernible inflammatory changes in the host. Thus, dietary change or antimicrobial exposure, both recognized factors in IBS exacerbations, induced marked dysbiosis that was accompanied by changes in fecal β-defensin-3 levels. We propose that serial monitoring of fecal β-defensins may serve as a marker of dysbiosis and help identify those IBS patients who may benefit from microbiota-directed therapeutic interventions. |
|---|---|
| MeSH term(s) | Animals ; Humans ; Mice ; beta-Defensins ; Diet, High-Fat ; Dysbiosis/microbiology ; Feces/microbiology ; Gastrointestinal Microbiome ; Irritable Bowel Syndrome/microbiology ; RNA, Ribosomal, 16S/genetics ; Sugars |
| Chemical Substances | beta-Defensins ; RNA, Ribosomal, 16S ; Sugars ; beta-defensin 3, mouse |
| Language | English |
| Publishing date | 2023-07-19 |
| Publishing country | United States |
| Document type | Journal Article ; Research Support, Non-U.S. Gov't |
| ZDB-ID | 2575755-6 |
| ISSN | 1949-0984 ; 1949-0984 |
| ISSN (online) | 1949-0984 |
| ISSN | 1949-0984 |
| DOI | 10.1080/19490976.2023.2233679 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
More links
Kategorien
Order via subito
This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.