Infant Gut Microbiota Associated with Fine Motor Skills

Inmaculada Acuña1,2, Tomás Cerdó3, Alicia Ruiz4

  • 1Department of Biochemistry and Molecular Biology, Faculty of Pharmacy, Campus of Cartuja, University of Granada, 18071 Granada, Spain.

Nutrients
|June 2, 2021
PubMed

Insights

Infant gut bacteria composition is linked to fine motor skills development. Specific bacterial groups, including probiotics like Bifidobacterium, were more abundant in infants with better fine motor abilities.

Area of Science:

  • Microbiome research
  • Neurodevelopmental biology
  • Pediatric health

Background:

  • Early life gut microbiome development is dynamic and coincides with brain maturation.
  • Potential cross-talk mechanisms between the gut and brain may influence infant behavior.

Purpose of the Study:

  • To investigate the association between gut microbiota composition and neurodevelopmental outcomes in healthy infants.
  • To explore differences in gut microbial diversity, enterotypes, and specific taxa related to behavioral characteristics.

Main Methods:

  • 16S rRNA gene sequencing was employed to analyze the gut microbiota of 71 healthy infants at 18 months of age.
  • Neurodevelopmental outcomes were assessed using the Bayley Scales of Infant Development III.
  • Dirichlet multinomial mixture analysis was used to determine enterotypes.

Main Results:

  • Significant differences in beta-diversity (weighted Unifrac) were observed in fine motor (FM) activity between infants.
  • Two distinct enterotypes were identified and strongly associated with FM outcomes.
  • Specific bacterial genera, including *Turicibacter* and *Parabacteroides*, were linked to lower FM performance, while others, including *Bifidobacterium* and *Lactobacillus*, were associated with higher FM performance, even after controlling for maternal BMI and breastfeeding duration.

Conclusions:

  • The study suggests a link between gut enterotypes, specific bacterial genera, and fine motor activity in infants.
  • These findings may indicate potential for probiotic interventions to support motor skill development and address motor disorders.
Abstract

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