Fungal cutaneous microbiome and host determinants in preterm and term neonates

Anshu A Paul1, Kristi L Hoffman2, Joseph L Hagan1

  • 1Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.

Pediatric Research
|December 10, 2019
PubMed
Abstract

Insights

The skin microbiome of preterm infants is simple and affected by antibiotics and the NICU environment. Understanding these factors and host genetics can help prevent invasive fungal infections.

Area of Science:

  • Neonatal dermatology
  • Fungal microbiome research
  • Infectious disease prevention

Background:

  • The skin microbiome in preterm infants remains largely uncharacterized.
  • Preterm neonates are susceptible to invasive fungal infections due to immature skin.
  • Identifying factors influencing the skin mycobiome is crucial for preventing infections.

Purpose of the Study:

  • To characterize the neonatal cutaneous mycobiome in preterm infants.
  • To identify clinical and host determinants of the skin mycobiome.
  • To inform strategies for preventing invasive fungal infections in neonates.

Main Methods:

  • Collected skin swabs from preterm and term neonates (n=30) over 5 weeks.
  • Sequenced the fungal ITS2 region to analyze the mycobiome.
  • Genotyped immune-modulating genes and collected clinical data.

Main Results:

  • The neonatal mycobiome is characterized by low diversity.
  • Antibiotic exposure, body site (forehead), and NICU environment impact mycobiome diversity.
  • Delivery mode, diet, and body site influence mycobiome composition.
  • Host genetics (TLR4, NLRP3, CARD8, NOD2 polymorphisms) are associated with the cutaneous microbiome.

Conclusions:

  • The neonatal skin mycobiome is simple and influenced by clinical factors and host genetics.
  • Understanding these influences can guide the development of preventive strategies against invasive fungal infections.

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