The Airway Microbiome at Birth

Area of Science:

• Neonatal research
• Microbiome studies
• Pulmonary medicine

Background:

• Pulmonary microbiome alterations are linked to respiratory disorders.
• The existence and role of the airway microbiome at birth require investigation.
• Understanding the early airway microbiome is crucial for predicting and preventing infant lung disease.

Purpose of the Study:

• To determine if an airway microbiome exists at birth.
• To investigate the association between the infant airway microbiome and subsequent lung disease.
• To explore temporal changes in the airway microbiome related to bronchopulmonary dysplasia development.

Main Methods:

• Analysis of airway microbiome composition in preterm and term infants at birth.
• Comparison of the airway microbiome in healthy infants versus those with chronic lung disease (bronchopulmonary dysplasia).
• Longitudinal assessment of airway microbiome changes from birth to disease development in extremely preterm infants.

Main Results:

• A diverse and similar airway microbiome was identified at birth in both preterm and term infants.
• The airway microbiome at birth was more diverse and distinct compared to older preterm infants with bronchopulmonary dysplasia.
• Temporal dysbiotic changes in the airway microbiome were observed from birth leading to bronchopulmonary dysplasia.
• Decreased levels of Lactobacillus at birth were associated with chorioamnionitis and subsequent lung disease development.

Conclusions:

• Evidence suggests fetal acquisition of the airway microbiome.
• The early airway microbiome may play a role in priming the pulmonary immune system.
• Dysbiosis in the early airway microbiome could contribute to the development of subsequent lung disease.