Mouse fecal pellets
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA823289 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR18609464_1.fastq.gz | Fastqsanger.gz | |||
| SRR18609464_2.fastq.gz | Fastqsanger.gz | |||
| SRR18609465_1.fastq.gz | Fastqsanger.gz | |||
| SRR18609465_2.fastq.gz | Fastqsanger.gz | |||
| SRR18609466_1.fastq.gz | Fastqsanger.gz |
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Project description:Feed additives aiming to improve gastrointestinal health are frequently supplied to piglets after weaning but might be more effective when administered before weaning. In this period, feed additives can either be administered directly to neonates, or indirectly via sow’s feed. It is yet unknown what the effect of the administration route is on gut functionality and health. Therefore, we compared the effect of different dietary interventions on gut functionality after maternal administration (lactation feed) to the neonatal administration route (oral gavage). These feed interventions included medium chain fatty acids (MCFA), beta-glucans (BG), and galacto-oligosaccharides (GOS). We measured intestinal gene expression and microbiota composition after birth (d1) and after weaning (d31). Our results show that the type of intervention and the administration route influence gut functionality (microbiome and gene expression profiles). MCFA administration led to a more differentially orchestrated response when comparing the neonatal and maternal administration route then the other two additives, indicating the route of administration of the feed interventions is determinative for the outcome. This implies that for each nutritional intervention in early life of a pig the optimal route of administration needs to be determined.
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Project description:Disruption of circadian rhythm during pregnancy produced adverse health outcomes in offspring. However, the role of maternal circadian rhythms in infants’ immunity and their susceptibility to inflammation remains poorly understood. Here we reported that disruption of circadian rhythms in pregnant mice profoundly aggravated the severity of neonatal inflammatory disorders, including necrotizing enterocolitis (NEC) and sepsis. The diminished production of maternal-derived docosahexaenoic acid (DHA) and the impaired immunosuppressive function of myeloid-derived suppressor cells (MDSCs) in neonates played a dominant role in this process. Mechanistically, DHA enhanced the immunosuppressive function of neonatal MDSCs viaPPARγ mediated mitochondrial oxidative phosphorylation. Transfer of MDSCs or perinatal supplementation of DHA relieved neonatal inflammation induced by maternal rhythms disruption. These observations revealed an important role of maternal circadian rhythms in the control of neonatal inflammation via metabolic reprograming of myeloid cells.
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Project description:Disruption of circadian rhythm during pregnancy produced adverse health outcomes in offspring. However, the role of maternal circadian rhythms in infants’ immunity and their susceptibility to inflammation remains poorly understood. Here we reported that disruption of circadian rhythms in pregnant mice profoundly aggravated the severity of neonatal inflammatory disorders, including necrotizing enterocolitis (NEC) and sepsis. The diminished production of maternal-derived docosahexaenoic acid (DHA) and the impaired immunosuppressive function of myeloid-derived suppressor cells (MDSCs) in neonates played a dominant role in this process. Mechanistically, DHA enhanced the immunosuppressive function of neonatal MDSCs viaPPARγ mediated mitochondrial oxidative phosphorylation. Transfer of MDSCs or perinatal supplementation of DHA relieved neonatal inflammation induced by maternal rhythms disruption. These observations revealed an important role of maternal circadian rhythms in the control of neonatal inflammation via metabolic reprograming of myeloid cells.
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Project description:Necrotizing enterocolitis (NEC) is a devastating intestinal inflammatory disorder that primarily affects premature infants. Despite decades of research, this disease remains a significant cause of death in the absence of efficient therapeutics. Interleukin (IL)-22 has been shown to play a critical role in maintaining the gut barrier, promoting epithelial regeneration, and controlling intestinal inflammation in adult animal models with an established microbiome. However, the importance of IL-22 signaling in the regulation of gut homeostasis and protection in neonates that lack an established microbiome remains unknown. Therefore, the aim of the current study is to investigate the role of IL-22 in the neonatal intestinal epithelium under homeostatic and inflammatory conditions by using a mouse model of NEC. Our data reveal that Il22 expression in neonatal murine intestine is negligible until weaning. In addition, both human and murine neonates lack IL-22 production during NEC. Mice deficient in IL-22 or mice lacking the expression of IL-22 receptor in intestinal epithelial cells, display a similar susceptibility of neonates to NEC consistent with the lack of endogenous IL-22 at this critical stage of intestinal development. Conversely, treatment with recombinant IL-22 during NEC substantially reduces disease severity. This IL-22-mediated protection is associated with enhanced epithelial regeneration and increased expression of several antimicrobial genes. Strikingly, despite an IL-22-mediated induction of an antimicrobial transcriptional program, the composition of the intestinal microbial communities remains unchanged. Taken together, this study demonstrates that an IL-22 signaling axis promotes protection against neonatal NEC through the induction of epithelial cell regeneration.
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