Related Experiment Video
Updated: May 22, 2026

Guided Protocol for Fecal Microbial Characterization by 16S rRNA-Amplicon Sequencing
Published on: March 19, 2018
Composition of the early intestinal microbiota: knowledge, knowledge gaps and the use of high-throughput sequencing
Fiona Fouhy1, R Paul Ross, Gerald F Fitzgerald
1Teagasc Food Research Centre, Moorepark, Fermoy, Cork, Ireland.
Insights
The infant gut microbiota develops over two years, influenced by delivery mode, diet, and antibiotics. Advanced DNA sequencing techniques are crucial for understanding these complex influences on infant gut health.
Area of Science:
- Microbiology
- Gastroenterology
- Pediatrics
Background:
- The newborn gastrointestinal tract undergoes colonization, development, and maturation from birth to two years.
- Numerous factors modulate this process, including delivery mode, feeding, maternal factors, and antibiotic exposure.
- Traditional culture-based methods have limitations in analyzing the complex gut microbiota.
Purpose of the Study:
- To review recent research on factors influencing infant gut microbiota acquisition and development.
- To summarize knowledge gained from culture-independent techniques.
- To highlight advances in high-throughput sequencing for understanding the human intestinal microbiota.
Main Methods:
- Review of recent scientific literature.
- Focus on culture-independent DNA-based approaches.
- Emphasis on high-throughput sequencing technologies.
Main Results:
- Identified key modulatory factors impacting infant gut microbiota.
- Documented advancements in understanding microbiota through culture-independent methods.
- Showcased the role of high-throughput sequencing in filling knowledge gaps.
Conclusions:
- High-throughput sequencing significantly enhances our understanding of infant gut microbiota development.
- Further research using advanced sequencing is essential to fully elucidate the human intestinal microbiota.
- Understanding these modulatory factors is critical for infant gut health.
Abstract:
The colonization, development and maturation of the newborn gastrointestinal tract that begins immediately at birth and continues for two years, is modulated by numerous factors including mode of delivery, feeding regime, maternal diet/weight, probiotic and prebiotic use and antibiotic exposure pre-, peri- and post-natally. While in the past, culture-based approaches were used to assess the impact of these factors on the gut microbiota, these have now largely been replaced by culture-independent DNA-based approaches and most recently, high-throughput sequencing-based forms thereof. The aim of this review is to summarize recent research into the modulatory factors that impact on the acquisition and development of the infant gut microbiota, to outline the knowledge recently gained through the use of culture-independent techniques and, in particular, highlight advances in high-throughput sequencing and how these technologies have, and will continue to, fill gaps in our knowledge with respect to the human intestinal microbiota.
Related Concept Videos
Introduction to the Human Microbiota
Microbiota of the Large Intestine
Modern Molecular Taxonomy
Microbiota of the Stomach and Small Intestine
Development of Human Microbiota
Functions of the Gut Microbiota

