Alba Rubio, ClaudioCarrera, MartaÁlvarez Calatayud, GuillermoArroyo Rodríguez, RebecaFernández Álvarez, LeonidesRodríguez Gómez, Juan Miguel2024-05-172024-05-172024-04-11Alba, C.; Carrera, M.; Álvarez-Calatayud, G.; Arroyo, R.; Fernández, L.; Rodríguez, J.M. Evaluation of Safety and Beneficial Health Effects of the Human-Milk Strain Bifidobacterium breve DSM32583: An Infant Pilot Trial. Nutrients 2024, 16, 1134. https://doi.org/10.3390/ nu1608113410.3390/nu16081134https://hdl.handle.net/20.500.14352/104180Author Contributions: Conceptualization, J.M.R. and G.Á.-C.; methodology, R.A. and M.C.; software, C.A.; validation, G.Á.-C.; formal analysis, L.F.; resources, J.M.R.; data curation, C.A. and L.F.; writing—original draft preparation, J.M.R.; writing—review and editing, L.F., M.C. and G.Á.-C.; project administration, J.M.R.; funding acquisition, J.M.R. All authors have read and agreed to the published version of the manuscript.Human milk promotes the growth of bifidobacteria in the infant gut. Adding bifidobacterial species to infant formula may contribute to increasing their presence in the gut of formula-fed infants. Therefore, the safety and anti-infectious effects of Bifidobacterium breve DSM32583, a breast milk isolate, were assessed in a pilot trial involving 3-month-old infants. The infants were randomly assigned to either the probiotic (PG) or the control (CG) groups. All the infants consumed the same formula, although it was supplemented with the strain (1 × 107 cfu/g of formula) in the PG. Overall, 160 infants (80 per group) finished the intervention. Infants in CG gained more weight compared to PG (p < 0.05), but the weights for age Z-scores at 6 months were within the normal distribution for this age group. The rates of infections affecting the gastrointestinal and respiratory tracts and antibiotic therapy were significantly lower in the PG. The bifidobacterial population and the level of short-chain fatty acids were higher (p < 0.05) in the fecal samples of PG infants. No adverse events related to formula consumption were observed. In conclusion, the administration of an infant formula with B. breve DSM32583 was safe and exerted potential beneficial effects on gut health.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal article2072-6643https://doi.org/10.3390/nu1608113438674825https://www.mdpi.com/journal/nutrientsopen access613.22Bifidobacterium breveProbioticsInfant formulaSafetyBifidobacteriaShort-chain fatty acidsInfectionsDietética y nutrición (Medicina)3206 Ciencias de la Nutrición