Alterations of the human gut microbiome in liver cirrhosis
- PMID: 25079328
- DOI: 10.1038/nature13568
Alterations of the human gut microbiome in liver cirrhosis
Abstract
Liver cirrhosis occurs as a consequence of many chronic liver diseases that are prevalent worldwide. Here we characterize the gut microbiome in liver cirrhosis by comparing 98 patients and 83 healthy control individuals. We build a reference gene set for the cohort containing 2.69 million genes, 36.1% of which are novel. Quantitative metagenomics reveals 75,245 genes that differ in abundance between the patients and healthy individuals (false discovery rate < 0.0001) and can be grouped into 66 clusters representing cognate bacterial species; 28 are enriched in patients and 38 in control individuals. Most (54%) of the patient-enriched, taxonomically assigned species are of buccal origin, suggesting an invasion of the gut from the mouth in liver cirrhosis. Biomarkers specific to liver cirrhosis at gene and function levels are revealed by a comparison with those for type 2 diabetes and inflammatory bowel disease. On the basis of only 15 biomarkers, a highly accurate patient discrimination index is created and validated on an independent cohort. Thus microbiota-targeted biomarkers may be a powerful tool for diagnosis of different diseases.
Comment in
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Cirrhosis and dysbiosis: New insights from next-generation sequencing.Hepatology. 2016 Jan;63(1):336-8. doi: 10.1002/hep.28133. Epub 2015 Oct 10. Hepatology. 2016. PMID: 26313376 No abstract available.
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Decompensated cirrhosis and microbiome interpretation.Nature. 2015 Sep 17;525(7569):E1-2. doi: 10.1038/nature14851. Nature. 2015. PMID: 26381988 Free PMC article. No abstract available.
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Qin et al. reply.Nature. 2015 Sep 17;525(7569):E2-3. doi: 10.1038/nature14852. Nature. 2015. PMID: 26381989 No abstract available.
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