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Mouse gut metagenome

ABSTRACT: Effect of Pteridium aquilinum or Matteuccia struthiopteris on gut microbiota in mice

PROVIDER: PRJDB6492 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	DRR117997.fastq.gz	Fastqsanger.gz
	DRR117998.fastq.gz	Fastqsanger.gz
	DRR117999.fastq.gz	Fastqsanger.gz
	DRR118000.fastq.gz	Fastqsanger.gz
	DRR118001.fastq.gz	Fastqsanger.gz

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Project description:Gut microbiome research is rapidly moving towards the functional characterization of the microbiota by means of shotgun meta-omics. Here, we selected a cohort of healthy subjects from an indigenous and monitored Sardinian population to analyze their gut microbiota using both shotgun metagenomics and shotgun metaproteomics. We found a considerable divergence between genetic potential and functional activity of the human healthy gut microbiota, in spite of a quite comparable taxonomic structure revealed by the two approaches. Investigation of inter-individual variability of taxonomic features revealed Bacteroides and Akkermansia as remarkably conserved and variable in abundance within the population, respectively. Firmicutes-driven butyrogenesis (mainly due to Faecalibacterium spp.) was shown to be the functional activity with the higher expression rate and the lower inter-individual variability in the study cohort, highlighting the key importance of the biosynthesis of this microbial by-product for the gut homeostasis. The taxon-specific contribution to functional activities and metabolic tasks was also examined, giving insights into the peculiar role of several gut microbiota members in carbohydrate metabolism (including polysaccharide degradation, glycan transport, glycolysis and short-chain fatty acid production). In conclusion, our results provide useful indications regarding the main functions actively exerted by the gut microbiota members of a healthy human cohort, and support metaproteomics as a valuable approach to investigate the functional role of the gut microbiota in health and disease.

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To identify alterations induced in gastric mucosa of mice exposed to Pteridium aquilinum and/or infected with Helicobacter pylori

Project description:The aim of this study is to identify alterations induced in gastric mucosa of mice exposed to Pteridium aquilinum and/or infected with Helicobacter pylori, in order to identify genes that are induced by bracken fern exerts exacerbating effects on gastric lesions associated to the infection. Six groups of C57Bl/6 mice were be used: 1) control, 2) infected Helicobacter pylori, 3) treated with Bracken fern extract orogastrically, 4) treated with Bracken fern extract in drinking water, 5) infected Helicobacter pylori + treated with Bracken fern extract orogastrically, 6) infected Helicobacter pylori + treated with Bracken fern extract in drinking water. The infection procedure was performed using an orogastric inoculation of H.pylori (strain SS1) twice in the first week. The RNA isolation was done in triplicate (3 mice per each condition). Further evaluation of morphological alterations on gastric mucosa, proliferative index and induction of DNA strand breaks will be performed in the mice stomach exposed to Pteridium aquilinum infected or not with Helicobacter pylori. Alterations of glycosylation in gastric tissues will also evaluated.

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