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Nutrients 2017, 9(8), 904; doi:10.3390/nu9080904

Probiotics Prevent Late-Onset Sepsis in Human Milk-Fed, Very Low Birth Weight Preterm Infants: Systematic Review and Meta-Analysis

1
Neonatology and Neonatal Intensive Care Unit, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, S.Orsola-Malpighi Hospital, 40138 Bologna, Italy
2
Neonatal Unit, Catholic University, 00168 Rome, Italy
3
Department of Biomedical and Neuromotor Sciences (DIBINEM), University of Bologna, 40126 Bologna, Italy
4
Institute of Microbiology, Catholic University, 29122 Piacenza, Italy
5
Department of Pediatrics, Aldo Moro University, 70124 Bari, Italy
6
Division of Neonatology, V. Buzzi Children Hospital, 20154 Milan, Italy
7
Department of Pediatrics, V. Buzzi Children Hospital, University of Milan, 20154 Milan, Italy
*
Author to whom correspondence should be addressed.
Received: 11 July 2017 / Revised: 13 August 2017 / Accepted: 16 August 2017 / Published: 22 August 2017
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Abstract

Growing evidence supports the role of probiotics in reducing the risk of necrotizing enterocolitis, time to achieve full enteral feeding, and late-onset sepsis (LOS) in preterm infants. As reported for several neonatal clinical outcomes, recent data have suggested that nutrition might affect probiotics’ efficacy. Nevertheless, the currently available literature does not explore the relationship between LOS prevention and type of feeding in preterm infants receiving probiotics. Thus, the aim of this systematic review and meta-analysis was to evaluate the effect of probiotics for LOS prevention in preterm infants according to type of feeding (exclusive human milk (HM) vs. exclusive formula or mixed feeding). Randomized-controlled trials involving preterm infants receiving probiotics and reporting on LOS were included in the systematic review. Only trials reporting on outcome according to feeding type were included in the meta-analysis. Fixed-effects models were used and random-effects models were used when significant heterogeneity was found. The results were expressed as risk ratio (RR) with 95% confidence interval (CI). Twenty-five studies were included in the meta-analysis. Overall, probiotic supplementation resulted in a significantly lower incidence of LOS (RR 0.79 (95% CI 0.71–0.88), p < 0.0001). According to feeding type, the beneficial effect of probiotics was confirmed only in exclusively HM-fed preterm infants (RR 0.75 (95% CI 0.65–0.86), p < 0.0001). Among HM-fed infants, only probiotic mixtures, and not single-strain products, were effective in reducing LOS incidence (RR 0.68 (95% CI 0.57–0.80) p < 0.00001). The results of the present meta-analysis show that probiotics reduce LOS incidence in exclusively HM-fed preterm infants. Further efforts are required to clarify the relationship between probiotics supplementation, HM, and feeding practices in preterm infants. View Full-Text
Keywords: late-onset sepsis; probiotic; preterm infants; human milk; meta-analysis late-onset sepsis; probiotic; preterm infants; human milk; meta-analysis
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MDPI and ACS Style

Aceti, A.; Maggio, L.; Beghetti, I.; Gori, D.; Barone, G.; Callegari, M.L.; Fantini, M.P.; Indrio, F.; Meneghin, F.; Morelli, L.; Zuccotti, G.; Corvaglia, L.; on behalf of the Italian Society of Neonatology.. Probiotics Prevent Late-Onset Sepsis in Human Milk-Fed, Very Low Birth Weight Preterm Infants: Systematic Review and Meta-Analysis. Nutrients 2017, 9, 904.

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