Related Experiment Video
Updated: Jun 13, 2026

Probiotic Studies in Neonatal Mice Using Gavage
Published on: January 27, 2019
Programming infant gut microbiota: influence of dietary and environmental factors
Tatiana Milena Marques1, Rebecca Wall, R Paul Ross
1Alimentary Pharmabiotic Centre, Co. Cork, Ireland.
Insights
The neonatal period is critical for establishing a healthy infant gut microbiota. Understanding how diet influences this microbial organ is key for long-term infant health and well-being.
Area of Science:
- Microbiology
- Neonatal Health
- Gut Microbiome Research
Background:
- The neonatal period is a critical window for intestinal colonization.
- Early life gut microbiota composition is influenced by birth mode, environment, diet, and antibiotic exposure.
- The gut microbiota plays vital roles in immunity, metabolism, and pathogen protection, but can also contribute to disease.
Purpose of the Study:
- To understand the establishment of the infant gut microbial ecosystem.
- To investigate dietary strategies, including prebiotics and probiotics, for programming a beneficial gut microbiota.
- To identify methods for optimizing the gut microbial organ for host health.
Main Methods:
- Review of existing literature on neonatal gut colonization.
- Analysis of factors influencing microbiota composition.
- Exploration of dietary interventions for microbiota modulation.
Main Results:
- Neonatal gut microbiota development is complex and multifactorial.
- Dietary interventions show potential for shaping the infant gut microbiome.
- Specific food ingredients, prebiotics, and probiotics can influence microbial composition.
Conclusions:
- Early life nutrition is a critical determinant of gut microbiota composition.
- Targeted dietary strategies can promote a healthy and resilient gut ecosystem in infants.
- Further research is needed to optimize dietary interventions for long-term health benefits.
Abstract:
The neonatal period is crucial for intestinal colonisation, and the composition of this ecosystem in early life is influenced by such factors as mode of birth, environment, diet and antibiotics. The intestinal microbiota contributes to protection against pathogens, maturation of the immune system and metabolic welfare of the host, but under some circumstances can contribute to the pathogenesis of certain diseases. Because colonisation with non-pathogenic microbiota is important for infant health and may affect health in later life, it is important to understand how the composition of this microbial organ is established and by which dietary means (e.g. supplementation with prebiotics/probiotics/food ingredients) it can be programmed in order to achieve an ecosystem that is valuable for the host.
Related Concept Videos
Anatomy of the Intestines
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the small...
Development of Human Microbiota
Microbiota Modulation by Antibiotics
Development of the Oral Microbiota
Gut-Brain Axis
Introduction to the Human Microbiota
