Mother-to-offspring microbial vertical transmission: timing, determinants, and impact on offspring susceptibility to

Ruqiao Duan1,2,3, Kun Wang1,2,3, Liping Duan1,2,3

  • 1Department of Gastroenterology, Peking University Third Hospital, Beijing, China.

Insights

Mother-to-offspring microbial transmission shapes the early-life microbiome. Understanding transmission routes and influencing factors is key for preventing infant dysbiosis and related diseases.

Area of Science:

  • Microbiology
  • Human Microbiome
  • Developmental Biology

Background:

  • The early-life microbiota is crucial for infant health and development.
  • Mother-to-offspring microbial vertical transmission is a primary determinant of the infant microbiome.
  • Disruptions in early microbial colonization are linked to various health issues.

Purpose of the Study:

  • To synthesize current knowledge on mother-to-offspring microbial vertical transmission.
  • To examine the timing, determinants, and health implications of this transmission.
  • To review potential interventions for disrupted microbial transmission.

Main Methods:

  • Comprehensive literature review of studies on maternal-infant microbial transmission.
  • Analysis of evidence regarding prenatal, intrapartum, and postnatal transmission routes.
  • Evaluation of factors influencing microbial transmission and their impact on the infant microbiome.

Main Results:

  • Evidence for prenatal transmission remains debated, while intrapartum (birth) and postnatal (breastfeeding) transmission are well-established.
  • Delivery mode, gestational age, feeding practices, and antibiotic exposure significantly modulate microbial transmission.
  • Interventions like probiotics and microbiota transplantation show promise in restoring healthy microbial patterns.

Conclusions:

  • Vertical microbial transmission is fundamental to intergenerational microbiome inheritance.
  • Targeting vertical transmission offers a potential therapeutic strategy for preventing early-life dysbiosis.
  • Optimizing early microbial colonization is vital for long-term infant health outcomes.

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