Species Level Description of the Human Ileal Bacterial Microbiota
| Autor: | Heidi Cecilie Villmones, Øyvind Kommedal, Adrian Halland, Nils Grude, Tore Stenstad, Elling Ulvestad, Erik Skaaheim Haug |
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| Rok vydání: | 2018 |
| Předmět: |
DNA
Bacterial Male 0301 basic medicine lcsh:Medicine Article Microbiology 03 medical and health sciences Ileum RNA Ribosomal 16S Humans lcsh:Science Phylogeny Aged Aged 80 and over Solobacterium Multidisciplinary Bacteria biology Microbiota lcsh:R Middle Aged biology.organism_classification 030104 developmental biology Streptococcus salivarius Gemella lcsh:Q Female Sample collection Proteobacteria Granulicatella Rothia mucilaginosa Actinomyces |
| Zdroj: | Scientific Reports Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018) |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-018-23198-5 |
| Popis: | The small bowel is responsible for most of the body’s nutritional uptake and for the development of intestinal and systemic tolerance towards microbes. Nevertheless, the human small bowel microbiota has remained poorly characterized, mainly owing to sampling difficulties. Sample collection directly from the distal ileum was performed during radical cystectomy with urinary diversion. Material from the ileal mucosa were analysed using massive parallel sequencing of the 16S rRNA gene. Samples from 27 Caucasian patients were included. In total 280 unique Operational Taxonomic Units were identified, whereof 229 could be assigned to a species or a species group. The most frequently detected bacteria belonged to the genera Streptococcus, Granulicatella, Actinomyces, Solobacterium, Rothia, Gemella and TM7(G-1). Among these, the most abundant species were typically streptococci within the mitis and sanguinis groups, Streptococcus salivarius, Rothia mucilaginosa and Actinomyces from the A. meyeri/odontolyticus group. The amounts of Proteobacteria and strict anaerobes were low. The microbiota of the distal part of the human ileum is oral-like and strikingly different from the colonic microbiota. Although our patient population is elderly and hospitalized with a high prevalence of chronic conditions, our results provide new and valuable insights into a lesser explored part of the human intestinal ecosystem. |
| Databáze: | OpenAIRE |
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