Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1321700 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Chain elongating open mixed culture 16S rRNA Raw sequence reads
| PRJNA942594 | ENA
Project description:Folic acid deficiency is common worldwide and is linked to intestinal flora imbalance. The intestinal microbial utilization of folic acid based on model animals faces the challenges of repeatability and individual variability. In this study, we built an in vitro fecal slurry culture model deficient in folic acid. We examined the effects of supplementation with different forms of folic acid (5-methyltetrahydrofolate and non-reduced folic acid) on the modulation of intestinal flora. 16S rDNA gene sequencing showed alpha diversity increased after folic acid supplementation compared to fermentation samples with folic acid deficiency. In the non-reduced folic acid (FA) group, the relative abundance of the Firmicutes phylum dropped to 56.7%, whereas in the 5-methyltetrahydrofolate (MTHF) supplementation group, it grew to 64.9%. Lactobacillus genera became more prevalent, reaching 22.8% and 30.8%, respectively. Additionally, Bifidobacterium and Pedioccus, two common probiotic bacteria, were in higher abundance. Short-chain fatty acids (SCFAs) analysis showed that supplementation with folic acid (non-reduced folic acid, 5-methyltetrahydrofolate) decreased acetic acid and increased the fermentation yield of isobutyric acid. The in vitro fecal slurry culture model developed in this study can be utilized as a human folic acid deficiency model for studying intestinal microbiota and demonstrated that both 5-methyltetrahydrofolate and non-reduced folic acid have effects on the regulation of intestinal microecology.
2024-03-01 | GSE227224 | GEO
Project description:Mixed culture fermentation for production of medium-chain carboxylates (MCC) Targeted loci environmental
| PRJNA1222319 | ENA
Project description:Introduction: Fermented milk products are part of the staple diet for many Mediterranean populations. Most of these traditional foods are enriched with lactobacilli and other lactic acid bacteria and metabolites resulting from lactose fermentation. There is currently very little scientific knowledge on the influence of diet supplementation with fermented milk on the gut microbiota metabolism and composition. Methods: We integrated 16S rRNA gene-based taxonomic profiling with metaproteomic-based functional analysis to investigate the gut microbiota modifications in rats exposed for 8 weeks to diet supplementation with casu axedu, a traditional fermented milk produced within rural communities in Sardinia (Italy). Results and Discussion: Several taxa showed a significantly increased abundance at the end of the dietary treatment, including Phascolarctobacterium, Prevotella, Blautia glucerasea, and Akkermansia muciniphila, while Bifidobacterium, Lachnoclostridium, Odoribacter, Bacteroides dorei and Dubosiella newyorkensis were decreased compared to the control rats. Metaproteomic analysis highlighted a striking reshape of the Prevotella proteome profile in agreement with its blooming in casu axedu-fed animals, suggesting an increase of the glycolytic activity through the Embden Meyerhof Parnas Pathway over the Entner Doudoroff Pathway. Moreover, an increased production of succinate was observed, which in turn significantly boosted the abundance of Phascolartcobacterium and its production of propionate. Fermented milk consumption was also associated with promotion of microbial synthesis of branched chain essential amino acids L-valine and L-leucine. Finally, metaproteomic data indicated a reduction of bacterial virulence factors and host inflammatory markers, suggesting that the consumption of casu axedu can have beneficial effects on the gut mucosa health.
2025-09-29 | PXD054645 | Pride