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Updated: Feb 26, 2026

Probiotic Studies in Neonatal Mice Using Gavage
Published on: January 27, 2019
Prenatal and postnatal administration of prebiotics and probiotics
Kristin Sohn1, Mark A Underwood1
1Department of Pediatrics, University of California Davis School of Medicine, Sacramento, CA, USA.
Insights
Beneficial gut bacteria are crucial for infant health, protecting against pathogens and inflammation. Modulating the maternal and neonatal microbiome with prebiotics, probiotics, and synbiotics can improve pregnancy and infant outcomes.
Area of Science:
- Microbiology
- Neonatal Health
- Gastroenterology
Background:
- Neonatal gut microbiome colonization by beneficial bacteria is vital for mucosal barrier integrity.
- Maternal and neonatal microbiomes are influenced by diet, environment, and maternal factors.
- Pregnancy dysbiosis is linked to adverse maternal and infant outcomes, including pre-eclampsia and childhood atopy.
Purpose of the Study:
- To investigate the role of the neonatal gut microbiome in infant health and disease.
- To explore the impact of maternal and neonatal dysbiosis on pregnancy and neonatal outcomes.
- To evaluate the safety and feasibility of enteral prebiotics, probiotics, and synbiotics in modulating the microbiome.
Main Methods:
- Review of literature on neonatal gut microbiome development and dysbiosis.
- Analysis of factors influencing maternal and neonatal microbiome composition.
- Examination of studies on the administration of prebiotics, probiotics, and synbiotics during pregnancy and infancy.
Main Results:
- Neonatal gut dysbiosis is associated with infant conditions like colic, necrotizing enterocolitis, and sepsis.
- Maternal dysbiosis during pregnancy increases risks for various complications.
- Enteral administration of prebiotics, probiotics, and synbiotics shows promise for microbiome modulation.
Conclusions:
- Establishing a healthy neonatal microbiome is critical for preventing disease and promoting long-term health.
- Interventions targeting the maternal and neonatal microbiome may offer a safe and effective strategy to improve pregnancy and infant outcomes.
- Further research into microbiome modulation holds potential for enhancing neonatal care.
Abstract:
Colonization of the neonatal gut by beneficial bacteria is important for the establishment and maintenance of the mucosal barrier, thus protecting the neonate from enteric pathogens and local and systemic inflammation. The neonatal microbiome is influenced by infant diet, environment, and the maternal microbiome. Dysbiosis in pregnancy increases the risk of pre-eclampsia, diabetes, infection, preterm labor, and later childhood atopy. Dysbiosis of the neonatal gut plays an important role in colic in the term infant, in the disease processes which plague preterm infants, including necrotizing enterocolitis and sepsis, and in the long-term outcomes of neonates. Administration of enteral prebiotics, probiotics, and synbiotics during pregnancy, lactation, and postnatal life appears to be a safe and feasible method to alter the maternal and neonatal microbiome, thus improving pregnancy and neonatal outcomes.
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