Journal
FEMS MICROBIOLOGY ECOLOGY
Volume 93, Issue 12, Pages -Publisher
OXFORD UNIV PRESS
DOI: 10.1093/femsec/fix153
Keywords
microbiota; gut diseases; microbiome; microbial biomarkers; metagenomics
Categories
Funding
- EU Joint Programming Initiative-A Healthy Diet for a Healthy Life (JPI HDHL)
- DvS [15/JP/HDHL/3280]
- MIUR
- Laboratory of Probiogenomics
- Fondazione Cariparma, Parma, Italy
- Science Foundation Ireland (SFI), through the Irish Government's National Development Plan [SFI/12/RC/2273]
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Intestinal diseases, such as Crohn's disease (CD), ulcerative colitis (UC) and pseudomembranous colitis (CDI), are among the most common diseases in humans and may lead to more serious pathologies, e.g. colorectal cancer (CRC). Next generation sequencing has in recent years allowed the identification of correlations between intestinal bacteria and diseases, although the formulation of universal gut microbial biomarkers for such diseases is only in its infancy. In the current study, we selected and reanalyzed a total of 3048 public datasets obtained from 16S rRNA profiling of individuals affected by CD, UC, CDI and CRC. This meta-analysis revealed possible biases in the reconstruction of the gut microbiota composition due to the use of different primer pairs employed for PCR of 16S rRNA gene fragments. Notably, this approach also identified common features of individuals affected by gut diseases (DS), including lower biodiversity compared to control subjects. Moreover, potential universal intestinal disease microbial biomarkers were identified through cross-disease comparisons. In detail, CTRL showed high abundance of the genera Barnesiella, Ruminococcaceae UCG-005, Alistipes, Christensenellaceae R-7 group and unclassified member of Lachnospiraceae family, while DS exhibited high abundance of Lactobacillus, unclassified member of Erysipelotrichaceae family and Streptococcus genera.
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