Development of antibiotic resistome in premature infants

Area of Science:

• Neonatal Care
• Microbiome Research
• Pediatric Health

Background:

• Preterm birth poses significant risks to infant survival and long-term health.
• The gut microbiome is critical for infant development but is often dysregulated in preterm infants.
• Understanding antibiotic effects on the preterm gut microbiome is crucial.

Purpose of the Study:

• To analyze the impact of antibiotic exposure on the gut microbiome composition and antibiotic resistance in preterm infants.
• To investigate the influence of feeding patterns, particularly human milk, on the developing preterm gut microbiome.
• To assess the temporal changes in the gut microbiome and antibiotic resistance following antibiotic treatment.

Main Methods:

• Analysis of weekly, 6-month, and 1-year stool samples from 100 preterm infants.
• Correlation of microbiome data with clinical information on antibiotic use and feeding practices.
• Comparison of gut microbiome profiles between infants with and without empirical antibiotic treatment.

Main Results:

• Antibiotic use led to significant alterations in gut microbiome composition and increased antibiotic resistance gene abundance early in life.
• These microbiome alterations and increased resistance diminished over time but long-term clinical impacts are uncertain.
• Human milk feeding was linked to beneficial microbiota, such as Actinobacteriota, and reduced antibiotic resistance genes.

Conclusions:

• Judicious antibiotic use is essential in neonatal intensive care to mitigate negative impacts on the infant gut microbiome.
• Promoting human milk feeding can foster a healthier gut microbiome and potentially counteract antibiotic-induced dysbiosis.
• Further research is needed to clarify the long-term clinical consequences of early-life antibiotic exposure and microbiome alterations in preterm infants.