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Aliment Pharmacol Ther. 2016 Apr;43(7):790-801. doi: 10.1111/apt.13552. Epub 2016 Feb 9.

The features of mucosa-associated microbiota in primary sclerosing cholangitis.

Author information

1
Division of Gastroenterology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
2
Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
3
Section of Gastroenterology, Hepatology, and Nutrition, University of Chicago, Chicago, IL, USA.
4
Division of Liver Diseases, Department of Medicine, Recanati/Miller Transplantation Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.

Abstract

BACKGROUND:

Little is known about the role of the microbiome in primary sclerosing cholangitis.

AIM:

To explore the mucosa-associated microbiota in primary sclerosing cholangitis (PSC) patients across different locations in the gut, and to compare it with inflammatory bowel disease (IBD)-only patients and healthy controls.

METHODS:

Biopsies from the terminal ileum, right colon, and left colon were collected from patients and healthy controls undergoing colonoscopy. Microbiota profiling using bacterial 16S rRNA sequencing was performed on all biopsies.

RESULTS:

Forty-four patients were recruited: 20 with PSC (19 with PSC-IBD and one with PSC-only), 15 with IBD-only and nine healthy controls. The overall microbiome profile was similar throughout different locations in the gut. No differences in the global microbiome profile were found. However, we observed significant PSC-associated enrichment in Barnesiellaceae at the family level, and in Blautia and an unidentified Barnesiellaceae at the genus level. At the operational taxa unit level, most shifts in PSC were observed in Clostridiales and Bacteroidales orders, with approximately 86% of shifts occurring within the former order.

CONCLUSIONS:

The overall microbiota profile was similar across multiple locations in the gut from the same individual regardless of disease status. In this study, the mucosa associated-microbiota of patients with primary sclerosing cholangitis was characterised by enrichment of Blautia and Barnesiellaceae and by major shifts in operational taxa units within Clostridiales order.

PMID:
26857969
PMCID:
PMC5177987
DOI:
10.1111/apt.13552
[Indexed for MEDLINE]
Free PMC Article
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