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Updated: Mar 23, 2026

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Published on: January 27, 2019
Impact of oral probiotics on neurodevelopmental outcomes in preterm infants
Melek Akar1, Zeynep Eras2, Mehmet Yekta Oncel1
1a Division of Neonatology and.
Insights
Oral probiotics given to very low birth weight (VLBW) infants to prevent necrotizing enterocolitis (NEC) did not impact neurodevelopmental outcomes. Cognitive, neuromotor, and sensory development remained similar between probiotic and control groups at 18-24 months corrected age.
Area of Science:
- Neonatal Medicine
- Developmental Pediatrics
- Microbiome Research
Background:
- Necrotizing enterocolitis (NEC) is a serious gastrointestinal condition in premature infants.
- Very low birth weight (VLBW) infants are at high risk for NEC.
- Probiotics are explored for NEC prevention, but their effect on neurodevelopment is less understood.
Purpose of the Study:
- To assess the neurodevelopmental outcomes in VLBW preterm infants receiving oral probiotics for NEC prevention.
- To determine if probiotic supplementation influences cognitive, neuromotor, and sensory development.
Main Methods:
- Prospective follow-up of VLBW infants from a randomized controlled trial.
- Neurodevelopmental assessment using Bayley Scales of Infant Development II at 18-24 months corrected age.
- Evaluation of sensory and neurological performance via standard methods.
Main Results:
- No significant differences were observed in neurodevelopmental, sensory, or neurological outcomes between the probiotic and control groups.
- 400 infants completed the trial; 249 were evaluated for neurodevelopmental outcomes.
Conclusions:
- Early oral probiotic administration to VLBW infants for NEC prevention does not appear to affect neurodevelopmental, neurosensory, or cognitive outcomes.
- Findings suggest probiotics for NEC prevention may not alter long-term neurodevelopmental trajectories in this population.
Objective:
The aim of the study was to evaluate the neurodevelopment outcomes of very low birth weight (VLBW) preterm infants supplemented with oral probiotics for the prevention of necrotizing enterocolitis (NEC).
Methods:
A prospective follow-up study was performed in a cohort of VLBW preterm infants enrolled in a single center randomized controlled clinical trial to evaluate the efficacy of oral probiotics for the prevention of NEC. Cognitive and neuromotor developments were assessed by using the Bayley scales of infant development II. Sensory and neurological performance was evaluated by standard techniques. The primary outcome was neurodevelopmental impairment at 18-24 months' corrected age.
Results:
A total of 400 infants completed the trial protocol. Of the 370 infants eligible for follow-up, 249 infants (124 in the probiotics group and 125 in the control group) were evaluated. There was no significant difference in any of the neurodevelopmental and sensory outcomes between the two groups.
Conclusion:
Oral probiotic given to VLBW infants to reduce the incidense and severity of NEC started with the first feed did not affect neuromotor, neurosensory and cognitive outcomes at 18-24 months' corrected age.
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