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The Preterm Infant Microbiome: Biological, Behavioral and Health Outcomes at 2 and 4 Years of Age

ABSTRACT: The Preterm Infant Microbiome: Biological, Behavioral and Health Outcomes at 2 and 4 Years of Age

PROVIDER: PRJNA449987 | ENA |

REPOSITORIES: ENA

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The Preterm Infant Microbiome: Biological, Behavioral and Health Outcomes at 2 and 4 Years of Age

Project description:The Preterm Infant Microbiome: Biological, Behavioral and Health Outcomes at 2 and 4 Years of Age

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Metaproteome of preterm infant gut microbiome

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The Preterm Infant Microbiome: Biological, Behavioral and Health Outcomes at 2 and 4 Years of Age

Project description:<p>This project follows a cohort of 78 Very Low Birth Weight (VLBW) previously enrolled infants in a R21 grant plus additional 25 infants through their Neonatal Intensive Care Unit (NICU) stay until they reach the age of 4 years. The data, gathered over 6 weeks of the NICU stay, includes multiple factors, such as prenatal and postnatal events and illnesses, received human milk amount, weekly means of cytokines, chemokines, growth factors, and secretory Immunoglobulin A in the milk, and weekly levels of fecal calprotectin. These factors could potentially alter the gut microbiome. Microbiome species and diversities will be measured in the laboratory of Dr. Jack Gilbert at Argonne National Laboratory using state of the science deep sequencing and amplification of microbial sRNA genes. The microbiome will again be measured in stool samples from those children at the ages of 2 and 4 years. Relationship between the prenatal and postnatal factors, human milk volume and immunobiology, fecal calprotectin levels, and the very early microbiome will be analyzed. The predictive power of the VLBW infant gut microbiome for determining later childhood microbiomes will be analyzed prospectively. The relationships between microbiomes across time and later growth, development and health will be determined. VLBW infants are at risk for both early and later health effects, and the role of the microbiome in these effects will be measured in this prospective study. </p>

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Genome-resolved metaproteomic characterization of preterm infant gut microbiota development reveals core metabolic functions and variability during early-life

Project description:An integrated metagenomics and metaproteomics investigation of human preterm infant gut microbiota.

2017-02-23 | MSV000080565 | MassIVE

Metaproteomics on preterm infant stool

Project description:Development of the gut microbiota is greatly impacted in preterm infants. Despite increasing knowledge about microbiota composition in preterm infants, knowledge about the functional signatures of the intestinal microbiota remains limited. The aim was to study transitions in microbiota activity during the first six postnatal weeks in ten preterm infants. A total of 64 stool samples were measured by LC-MS/MS.

2017-07-14 | PXD005574 | Pride

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A Dysregulated Proinflammatory Status in Preterm School-aged Children with PVL-induced Spastic Cerebral Palsy

Project description:Injury occurring during critical periods of development may have long-term effects on inflammatory responses. Periventricular leukomalacia (PVL) is the most common cause of cerebral palsy (CP) in preterm infant. Activated leukocytes are the main source of inflammatory cytokines that give rise to white matter damage and CP in preterm infant. Here, we tested the hypothesis that inflammation profiles as pathogenic mediators for the occurrence of PVL in the neonatal period may persist in preterm children with CP at school age. Five preterm children with PVL-induced CP and gestational age-matched five preterm children with normal neurodevelopment were recruited from follow up clinics. Proinflammatory gene expression in the PBMCs from preterm children were determined by Superarray PCR study.

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Peptidomics analysis of milk protein-derived peptides released over time in the preterm infant stomach

Project description:Over the course of milk digestion, native milk proteases and infant digestive proteases fragment intact proteins into peptides with potential bioactivity. This study investigated the release of peptides over three hours of gastric digestion in 14 preterm infant sample sets. The peptide content was extracted and analyzed from milk and gastric samples via Orbitrap tandem mass spectrometry. The relative ion intensity (abundance) and count of peptides in each sample were compared over time and between infants fed milk fortified with bovine milk fortifier and infants fed unfortified milk. Bioactivity of the identified peptides was predicted by sequence homology to known bioactive milk peptides. Both total and bioactive peptide abundance and count continuously increased over three hours of gastric digestion. After accounting for infant weight, length, and post-conceptual age, fortification of milk limited the release of peptides from human milk proteins. Peptides that survived further gastric digestion after their initial release were structurally more similar to bioactive peptides than non-surviving peptides. This work is the first to provide a comprehensive profile of milk peptides released during gastric digestion over time, which is an essential step in determining which peptides are most likely to be biologically relevant in the infant.

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Very preterm delivery is associated with microbial signatures in maternal feces and blood and inflammatory activation in the fetus

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