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Cesarean delivery may affect the early biodiversity of intestinal bacteria

Giacomo Biasucci1, Belinda Benenati, Lorenzo Morelli

  • 1Department of Paediatrics and Neonatology, "Guglielmo da Saliceto Hospital," Piacenza, Italy. g.biasucci@ausl.pc.it

The Journal of Nutrition
|August 22, 2008
PubMed

Insights

Mode of delivery significantly impacts infant gut microbiota. Cesarean delivery results in less diverse intestinal bacteria and lacks Bifidobacteria compared to vaginal births, affecting early immune development.

Area of Science:

  • Microbiology
  • Neonatal immunology
  • Gut microbiome research

Background:

  • The neonatal gastrointestinal tract is colonized by microorganisms post-birth, primarily from the mother.
  • Early gut microbiota composition is crucial for the development of the neonatal immune system.
  • The mode of delivery is a potential factor influencing initial microbial colonization.

Purpose of the Study:

  • To investigate the relationship between the mode of delivery and the intestinal bacterial ecosystem in newborns.
  • To analyze the impact of cesarean section versus vaginal delivery on neonatal gut microbiota composition.

Main Methods:

  • Molecular biology techniques, including PCR-denaturing gradient gel electrophoresis and PCR-temperature gradient gel electrophoresis.
  • Specific amplification of key bacterial groups: Bifidobacterium, Ruminococcus, and Bacteroides species.
  • Analysis of intestinal bacterial composition on day 3 of life in infants born via vaginal delivery and cesarean section.

Main Results:

  • Infants delivered by cesarean section exhibited a less diverse intestinal microbiota compared to vaginally delivered infants.
  • The gut microbiota of neonates born via cesarean delivery was characterized by a significant absence of Bifidobacteria species.
  • Vaginally delivered neonates showed predominant bacterial groups like Bifidobacterium longum and Bifidobacterium catenulatum, despite individual variations.

Conclusions:

  • The mode of delivery profoundly influences the composition of the intestinal microbiota in early life.
  • Findings suggest a link between delivery mode, microbiota composition, and potential immune system development.
  • Further research is needed to explore microbiota modulation in cesarean-delivered neonates and the role of microbiological tools in clinical trials.

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