Perinatal factors affect the gut microbiota up to four years after birth

Area of Science:

• Microbiology
• Developmental Biology
• Gastroenterology

Background:

• Perinatal factors influence early-life gut microbiota development.
• Limited understanding exists regarding the long-term effects of these factors on the gut microbiome.
• The gut microbiome undergoes continuous evolution during early childhood.

Purpose of the Study:

• To investigate the long-term impact of perinatal factors on gut microbiota composition and evolution in children up to four years of age.
• To identify specific microbial profiles associated with different perinatal exposures.
• To determine the persistence of perinatal factor-associated microbial signatures.

Main Methods:

• DNA sequencing of fecal samples from children over their first four years.
• Analysis of gut microbiota composition and its correlation with perinatal factors.
• Longitudinal tracking of microbial community dynamics.

Main Results:

• Gut microbiota shows perpetual evolution during the first four years of life.
• Gestational age at birth and delivery mode significantly impact gut microbiota progression.
• Antibiotic exposure showed no measurable effects on the gut microbiota in the first year.
• Distinct microbiota profiles were observed based on gestational age and maturity at birth.
• Full-term delivery was associated with Bacteroides, Parabacteroides, and Christensenellaceae at different time points.
• Preterm delivery was associated with Lactobacillus, Streptococcus, and Carnobacterium at different time points.

Conclusions:

• The gut microbiome retains distinct microbial profiles related to perinatal factors for up to four years.
• Gestational age and delivery mode are critical determinants of long-term gut microbiota development.
• Early-life microbial signatures established by perinatal factors can persist into early childhood.