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Updated: Feb 2, 2026

A Gut-on-a-Chip Model to Study the Gut Microbiome-Nervous System Axis
Published on: July 28, 2023
Connection between gut microbiome and brain development in preterm infants
1Department of Pediatrics, University of Chicago, Pritzker School of Medicine, Chicago, Illinois.
Insights
Gut microbiome dysbiosis in preterm infants impacts brain development and neurological outcomes. Optimizing early gut microbiota colonization may improve neurodevelopment and prevent related diseases.
Area of Science:
- Microbiome research
- Neuroscience
- Neonatal health
Background:
- Gut microbiome dysbiosis in preterm infants is linked to necrotizing enterocolitis, sepsis, and adverse neurological outcomes.
- Early life presents critical developmental windows for both the gut microbiota and the nervous system.
- Preterm infants offer a unique opportunity to study the microbiome-brain axis during development.
Purpose of the Study:
- To review factors influencing neonatal gut microbiota assembly.
- To examine the role of dysbiosis in preterm infants' neuroinflammation and neurodevelopmental disorders.
- To explore emerging pathways connecting the gut microbiome and brain development.
Main Methods:
- Review of existing literature on neonatal gut microbiome assembly.
- Analysis of studies on dysbiosis in preterm infants and its neurological consequences.
- Discussion of animal models (e.g., humanized gnotobiotic models) and antibiotic exposure effects on brain development.
Main Results:
- Dysbiosis contributes to neuroinflammation and neurodevelopmental issues in preterm infants.
- Specific pathways linking gut microbiome alterations to brain development are being elucidated.
- Current models provide insights into the impact of microbiome manipulation on brain function.
Conclusions:
- Optimizing the early-life microbiome is crucial for preterm infant brain development.
- Understanding the microbiome-brain axis is key to developing targeted therapies.
- Interventions aimed at the gut microbiome can protect against prematurity-related neurodevelopmental diseases.
Abstract:
Dysbiosis of the gut microbiome in preterm infants predisposes the neonate to various major morbidities including neonatal necrotizing enterocolitis and sepsis in the neonatal intensive care unit, and adverse neurological outcomes later in life. There are parallel early developmental windows for the gut microbiota and the nervous system during prenatal to postnatal of life. Therefore, preterm infants represent a unique population in which optimization of initial colonization and microbiota development can affect brain development and enhance neurological outcomes. In this review, we will first discuss the factors affecting the assembly of neonatal gut microbiota and the contribution of dysbiosis in preterm infants to neuroinflammation and neurodevelopmental disorders. We then will discuss the emerging pathways connecting the gut microbiome and brain development. Further we will discuss the significance of current models for alteration of the gut microbiome (including humanized gnotobiotic models and exposure to antibiotics) to brain development and functions. Understanding the role of early optimization of the microbiome in brain development is of paramount importance for developing microbiome-targeted therapies and protecting infants from prematurity-related neurodevelopmental diseases.
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