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Updated: Jun 25, 2026

Probiotic Studies in Neonatal Mice Using Gavage
Published on: January 27, 2019
A formula containing galacto- and fructo-oligosaccharides prevents intestinal and extra-intestinal infections: an
Eugenia Bruzzese1, Monica Volpicelli, Veronica Squeglia
1Dipartimento di Pediatria, Università di Napoli Federico II, Via S. Pansini 5, 80131 Napoli, Italy.
Insights
Prebiotics in infant formula reduced intestinal infections and antibiotic use in healthy infants. This study suggests prebiotics may also decrease respiratory infections in the first year of life.
Area of Science:
- Pediatrics
- Microbiology
- Nutrition
Background:
- Prebiotics alter infant gut microflora composition.
- Infant infections are a significant health concern.
Purpose of the Study:
- To evaluate if prebiotics in infant formula reduce infections in healthy infants.
- To assess the impact of prebiotics on intestinal and respiratory infections.
Main Methods:
- Prospective, randomized, placebo-controlled trial.
- Healthy infants received formula with galacto- and fructo-oligosaccharides or control formula.
- Infections and anthropometrics monitored for 12 months.
Main Results:
- Lower incidence of gastroenteritis in the prebiotic group (p=0.015).
- Fewer children in the prebiotic group required multiple antibiotic courses (p=0.004).
- Transient increase in body weight observed in the prebiotic group during the first six months.
Conclusions:
- Prebiotic supplementation effectively reduces intestinal infections in infants.
- Prebiotics may also offer protection against respiratory infections in the first year of life.
Background & Aim:
The addition of prebiotics to infant formula modifies the composition of intestinal microflora. Aim of the study was to test the hypothesis that prebiotics reduce the incidence of intestinal and respiratory infections in healthy infants.
Methods:
A prospective, randomized, placebo-controlled, open trial was performed. Healthy infants were enrolled and randomized to a formula additioned with a mixture of galacto- and fructo-oligosaccharides or to a control formula. The incidence of intestinal and respiratory tract infections and the anthropometric measures were monitored for 12 months.
Results:
Three hundred and forty two infants (mean age 53.7+/-32.1 days) were enrolled. The incidence of gastroenteritis was lower in the supplemented group than in the controls (0.12+/-0.04 vs. 0.29+/-0.05 episodes/child/12 months; p=0.015). The number of children with more than 3 episodes tended to be lower in prebiotic group (17/60 vs. 29/65; p=0.06). The number of children with multiple antibiotic courses/year was lower in children receiving prebiotics (24/60 vs. 43/65; p=0.004). A transient increase in body weight was observed in children on prebiotics compared to controls during the first 6 months of follow-up.
Conclusions:
Prebiotic administration reduce intestinal and, possibly, respiratory infections in healthy infants during the first year of age.
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