Ontology highlight
ABSTRACT:
PROVIDER: PRJNA978990 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR24800900_1.fastq.gz | Fastqsanger.gz | |||
| SRR24800900_2.fastq.gz | Fastqsanger.gz | |||
| SRR24800901_1.fastq.gz | Fastqsanger.gz | |||
| SRR24800901_2.fastq.gz | Fastqsanger.gz | |||
| SRR24800902_1.fastq.gz | Fastqsanger.gz |
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Project description:Diarrhea remains a major cause of death in children. Current diagnostic methods largely rely on stool culture and suffer from low sensitivity and inadequate specificity, often leading to inappropriate treatment. The objective of the present study was to use RNA sequencing (RNAseq) analysis to determine blood transcriptional profiles specific for several common pathogenic bacteria and viruses that cause diarrhea in children. We collected whole blood samples from children in Mexico having diarrhea associated with a single pathogen and without systemic complications. Our RNAseq data suggested that the blood signatures can differentiate children with diarrhea from healthy children either with or without bacterial colonization. Moreover, we detected different expression profiles from bacterial and viral infection, demonstrating for the first time the use of RNAseq to identify the etiology of infectious diarrhea. Whole blood from 207 children including children with diarrhea caused by rotavirus (n=55), E.coli (n=55), Salmonella (n=36), Shigella (n=37) and control children (n=24).
2015-06-04 | E-GEOD-69529 | biostudies-arrayexpress
Project description:Diarrhea remains a major cause of death in children. Current diagnostic methods largely rely on stool culture and suffer from low sensitivity and inadequate specificity, often leading to inappropriate treatment. The objective of the present study was to use RNA sequencing (RNAseq) analysis to determine blood transcriptional profiles specific for several common pathogenic bacteria and viruses that cause diarrhea in children. We collected whole blood samples from children in Mexico having diarrhea associated with a single pathogen and without systemic complications. Our RNAseq data suggested that the blood signatures can differentiate children with diarrhea from healthy children either with or without bacterial colonization. Moreover, we detected different expression profiles from bacterial and viral infection, demonstrating for the first time the use of RNAseq to identify the etiology of infectious diarrhea.
2015-06-04 | GSE69529 | GEO
Project description:Our study in mice investigated the potential effects of the prebiotics GOS and inulin administrated during gestation on the development of DSS-induced chronic colitis in the offspring. Mothers were given or not during gestation a diet enriched in the prebiotics GOS and inulin. Eight to ten weeks old male offspring were treated or not with 3 cycles of DSS in drinking water, one cycle consisting of 2 days with DSS and 5 days without DSS.
2022-12-15 | E-MTAB-12176 | biostudies-arrayexpress
Project description:Effects of Probiotic in Treatment of Persistent Diarrhea in Children
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Project description:<p><strong>BACKGROUND:</strong> Diarrhea is common in infants, particularly, children less than 2 years old. Intractable or protracted infancy diarrhea is typically associated with feeding intolerance and malabsorption that is lethal for newborns. This study aimed to evaluate the effectiveness of baizhu shaoyao decoction in reducing functional diarrhea induced by weaning stress, while also delving into its potential mechanisms of action.</p><p><strong>RESULTS:</strong> Piglets were allocated into 5 groups, with each group receiving designated medication for a continuous 14-day period: control, zaohu powder, as well as low-, medium- and high-dose baizhu shaoyao decoction groups (n = 6 piglets per group). To identify diarrhea-related biomarkers, microbial communities, functions and metabolites were compared between the early-weaned piglets (control group) and those treated with 1.28 g/kg baizhu shaoyao decoction (medium-dose baizhu shaoyao decoction group). Our findings revealed significant shifts in microbial composition, function and metabolic profiles in piglets from the medium-dose baizhu shaoyao decoction group, intricately associated with the host's diarrhea status. Furthermore, carbohydrate metabolism and biosynthesis, lipid and amino acid metabolism, glycan activity and carbohydrate digestive enzymes exhibited downregulation in piglets of the medium-dose baizhu shaoyao decoction group compared to those in the control group. Transcriptome analysis highlighted the pivotal role of the FoxO1/3 transcription factor in mitigating weaning stress, particularly through the augmentation of CD4+/CD8+ T cell proportions. Our findings underscored that baizhu shaoyao decoction's therapeutic effects on weaning stress involve intestinal barrier restoration, modulation of brain-gut peptide expression and a reduction in mast-cell activity in the ileum.</p><p><strong>CONCLUSIONS:</strong> The key metabolites (chenodeoxycholyglycine, chenodeoxycholyltaurine, dinoprost, chenodeoxyglycocholic acid, glycochenodeoxycholic acid, glycocholic acid, N-choloylglycine, 5-trans-PGE2, Pregnanediol 3-O-glucuronide, spermidine and spermine) exhibited strong correlations with the abundance of <em>Clostridia_bacterium</em> and <em>Lachnospiraceae_bacterium</em>, emphasizing the significance of <em>Clostridia_bacterium</em> and <em>Lachnospiraceae_bacterium</em> in gut metabolism and function. Besides, this study suggests the potential efficacy of baizhu shaoyao decoction in addressing early post-weaning stress-induced diarrhea in infants, showcasing promising prospects for translational and clinical applications.</p>
2024-02-01 | MTBLS9292 | MetaboLights
Project description:Rotavirus infection is the single most important cause of severe diarrhea in young children worldwide. We used Affymetrix Human U95Av2 high density oligonucleotide arrays to compare gene expression profiles in peripheral blood mononuclear cells (PBMC) of 10 children with acute rotavirus diarrhea and 8 age-matched healthy children. We also examined patterns of gene expression in 5 convalescent-phase PBMC samples from rotavirus patients. For data analysis, we imported .cel files generated by Affymetrix MAS5.0 into Genetraffic 3.1 software (Iobion) and performed robust multi-chip analysis. We considered a gene in patients differentially expressed if its level of expression was at least 1.5-fold higher or lower than the baseline (arithmetic mean) of the corresponding gene in 8 controls and if its pattern of elevated or repressed expression was observed in at least 7 of the 10 patients. Using these criteria, we identified ~1% up- and ~2% down-regulated genes in acute-phase PBMC of patients. Up-regulated genes included those involved in the differentiation, maturation, activation, and survival of B cells, as well as an array of genes with function in inflammatory and antiviral activities. We observed a pattern of repressed expression of a number of genes involved in the various stages of T-cell development and activation. On the basis of these results, we conclude that rotavirus infection induces robust inflammatory response and B-cell activation but represses T-cell response.
2007-11-01 | E-GEOD-2729 | biostudies-arrayexpress
Project description:Akkermansia muciniphila, a bacterium, is associated with good health, but data are lacking whether it confers health benefits on children in low income countries and by which mechanisms. In a case-control study of children <5 years old with (n=1717) or without (n=1524) diarrhea, the presence of A. muciniphila reduces the odds ratio of symptoms of diarrhea from six diarrheal pathogens. A. muciniphila is found more frequently among children who are growing well compared with those who are growing poorly. In silico analysis of 1487 A. muciniphila genomes revealed the presence of DNA encoding the peptide larazotide known to benefit human health by improving tight junctions. Although previously considered synthetic, we demonstrated that larazotide is secreted by A. muciniphila. Larazotide is found in the nucleus of colonic epithelial cells and its exogenous application alters gene expression. When larazotide is applied to colonic organoid cultures, the amount of mucin (MUC2) is increased significantly (p<0.005). Our analyses are consistent with A. muciniphila secreting larazotide and intestinal epithelial cells responding by increasing MUC2, potentially creating a positive feedback loop that increases mucin production, which may itself increase abundance of the mucin-metabolizing A. muciniphila. This cycle may confer positive health outcomes for children.
2021-05-25 | GSE175488 | GEO