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Published on: January 27, 2019
Influence of probiotics on faecal antibiotic resistome in neonates: a systematic review
Chandra Rath1,2, Anurag Fursule3, Florence Wong4
1Neonatology, Centenary Hospital for Women and Children, Canberra, ACT, Australia. chandra.rath@research.uwa.edu.au.
Insights
Probiotic supplementation may reduce antimicrobial resistance (AMR) gene colonization in neonates. This systematic review suggests probiotics could be a strategy to combat AMR in infants.
Area of Science:
- Neonatal health
- Microbiome research
- Antimicrobial resistance
Background:
- Antimicrobial resistance (AMR) is a significant global health challenge.
- Probiotics offer a potential preventive strategy against AMR.
Purpose of the Study:
- To systematically review studies on the effect of probiotics on the neonatal fecal resistome.
- To assess the role of probiotics in reducing AMR colonization in neonates.
Main Methods:
- Systematic review of 18 studies (8 RCTs, 10 observational) involving 3496 neonates.
- Searched databases in October 2025 for studies on fecal antibiotic resistome in neonates with and without probiotic supplementation.
- Assessed risk of bias and certainty of evidence.
Main Results:
- Ten studies reported a significant reduction in fecal antibiotic resistome with probiotic use.
- Studies using culture or PCR methods were less likely to show reduction compared to metagenomic analyses.
- No consistent associations found between probiotic dose/strain or feeding type and resistome colonization.
- Most studies had a low risk of bias, but evidence certainty was low to very low.
Conclusions:
- Probiotic supplementation shows potential in reducing neonatal fecal AMR gene colonization.
- Future research needs standardized RCTs with quantitative AMR gene assessment and clinical outcomes.
- Microbiome modulation with probiotics may complement antibiotic stewardship in combating neonatal AMR.
Background:
Antimicrobial resistance (AMR) and its associated complications represent a major global health threat. Probiotics, among the limited available preventive strategies, may play an important role in reducing the risk of AMR.
Methods:
A systematic review of studies assessing faecal antibiotic resistome in neonates who did versus did not receive probiotic supplementation. Databases were searched in October 2025.
Results:
Eighteen studies (n = 3496) were included, comprising eight randomized controlled trials (RCTs) and ten observational studies (non-RCTs). Ten of the eighteen studies (RCTs: 5, non-RCTs: 5) reported significant reduction in the prevalence of faecal antibiotic resistome among probiotic supplemented infants. Five of the eight studies that reported no reduction relied on culture or polymerase-chain reaction-based methods rather than metagenomic analyses. No consistent associations were observed between probiotic dose and strain, or type of milk feeding and resistome colonization. Most included studies were assessed as having a low risk of bias. The certainty of evidence was rated as low to very low.
Conclusion:
Probiotic supplementation may reduce faecal AMR gene colonization in neonates. Future RCTs should employ standardized study designs and include quantitative assessment of AMR gene abundance, along with clinically relevant outcomes such as sepsis and its associated complications.
Impact:
The first comprehensive systematic review focused on the effect of probiotics on neonatal fecal resistome and mobile genetic elements, incorporating evidence from 18 studies involving 3496 neonates. Suggests a potential role for targeted probiotic strategies as an intervention for reducing early neonatal antimicrobial resistance colonization, particularly in preterm infants at high risk of multi-drug resistance sepsis. Positions microbiome modulation as a strategy complementary to antibiotic stewardship in tackling global neonatal antimicrobial resistance.
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