Mouse fecal pellets
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PROVIDER: PRJNA823289 | ENA |
REPOSITORIES: ENA
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Project description:Maternal gut microbiome-induced IgG regulates neonatal gut microbiome and immunity: IgG-/- vs WT, cohousing and DSS
| PRJNA823357 | ENA
Project description:Maternal gut microbiome-induced IgG regulates neonatal gut microbiome and immunity: IgG+ and IgG- bacteria
| PRJNA823359 | ENA
Project description:Maternal gut microbiome-induced IgG regulates neonatal gut microbiome and immunity: IgG-/- vs WT after DSS
| PRJNA823360 | ENA
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.
2023-06-01 | GSE229947 | GEO
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.
2023-09-08 | GSE242246 | GEO
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.
2023-05-26 | GSE233545 | GEO
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.
2021-05-18 | GSE155172 | GEO
Project description:“Dysbiosis" of the maternal gut microbiome, in response to environmental challenges such as infection, altered diet and stress during pregnancy, has been increasingly associated with abnormalities in offspring brain function and behavior. However, whether the maternal gut microbiome regulates neurodevelopment in the absence of environmental challenge remains unclear. In addition, whether the maternal microbiome exerts such influences during critical periods of embryonic brain development is poorly understood. Here we investigate how depletion, and selective reconstitution, of the maternal gut microbiome influences fetal neurodevelopment in mice. Embryos from antibiotic-treated and germ-free dams exhibit widespread transcriptomic alterations in the fetal brain relative to conventionally-colonized controls, with reduced expression of several genes involved in axonogenesis. In addition, embryos from microbiome-depleted mothers exhibit deficient thalamocortical axons and impaired thalamic axon outgrowth in response to cell-extrinsic guidance cues and growth factors. Consistent with the importance of fetal thalamocortical axonogenesis for shaping neural circuits for sensory processing, restricted depletion of the maternal microbiome from pre-conception through mid-gestation yields offspring that exhibit tactile hyposensitivity in select sensorimotor behavioral tasks. Gnotobiotic colonization of antibiotic-treated dams with a limited consortium of spore-forming bacteria indigenous to the gut microbiome prevents abnormalities in fetal brain gene expression, fetal thalamocortical axonogenesis and adult tactile sensory behavior associated with maternal microbiome depletion. Metabolomic profiling reveals that the maternal microbiota regulates levels of numerous small molecules in the maternal serum as well as the brains of fetal offspring. Select microbiota-dependent metabolites – trimethylamine N-oxide, 5-aminovalerate, imidazole propionate, and hippurate – sufficiently promote axon outgrowth from fetal thalamic explants. Moreover, maternal supplementation with the metabolites during early gestation abrogates deficiencies in fetal thalamocortical axons and prevents abnormalities in tactile sensory behavior in offspring from microbiome-depleted dams. Altogether, these findings reveal that the maternal gut microbiome promotes fetal thalamocortical axonogenesis and select tactile sensory behaviors in mice, likely by signaling of microbially modulated metabolites to neurons in the developing brain.
2020-04-17 | GSE147183 | GEO
Project description:We surveyed the genotypes and DNA methylomes of 237 neonates and found 1423 punctate regions of the methylome that were highly variable across individuals, termed variably methylated regions (VMRs), against a backdrop of homogeneity. Although methQTLs were readily detected in neonatal methylomes, genotype alone did not explain the majority of the VMRs. We found that the best explanation for 75% of VMRs was the interaction of genotype with different in utero environments, including maternal smoking, maternal depression, maternal BMI, infant birth weight, gestational age and birth order. We surveyed the genotypes and DNA methylomes of 237 neonates and included 32 technical replicates
2014-04-02 | E-GEOD-53816 | biostudies-arrayexpress
Project description:We surveyed the genotypes and DNA methylomes of 237 neonates and found 1423 punctate regions of the methylome that were highly variable across individuals, termed variably methylated regions (VMRs), against a backdrop of homogeneity. Although methQTLs were readily detected in neonatal methylomes, genotype alone did not explain the majority of the VMRs. We found that the best explanation for 75% of VMRs was the interaction of genotype with different in utero environments, including maternal smoking, maternal depression, maternal BMI, infant birth weight, gestational age and birth order. We surveyed the genotypes and DNA methylomes of 237 neonates
2014-04-02 | E-GEOD-54445 | biostudies-arrayexpress