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Updated: Jan 12, 2026
A Neonatal Imaging Model of Gram-Negative Bacterial Sepsis
Published on: August 12, 2020
Neonatal skin: barrier, immunity and infection prevention in the NICU
Tobias Strunk1, Jakob Steer2, Andrew Currie3
1Neonatology, King Edward Memorial Hospital, Child and Adolescent Health Service, Subiaco, Western Australia, Australia; Wesfarmers Centre for Vaccines and Infectious Diseases, The Kids Research Institute Australia, The University of Western Australia, Nedlands, Western Australia, Australia.
Insights
The neonatal skin barrier is crucial for infant survival and immune development. Advances highlight how skin defenses and microbes shape immunity, offering new strategies for neonatal intensive care units to reduce infection risk.
Area of Science:
- Neonatal immunology
- Dermatology
- Microbiome research
Background:
- The neonatal skin barrier is vital for infant survival, integrating physical, chemical, and microbial defenses.
- Preterm infants exhibit immature skin defenses, increasing susceptibility to infection and inflammation.
- The neonatal period is a critical window for skin-microbe interactions influencing immune development.
Purpose of the Study:
- To review recent advances in neonatal skin barrier development, immune defenses, and microbial roles.
- To discuss translational opportunities for improving neonatal care and reducing infection risk.
- To outline future directions in microbiome-informed and skin-centered strategies.
Main Methods:
- Literature review of recent scientific advances.
- Synthesis of current knowledge on skin barrier function, immunity, and microbiome.
- Analysis of translational opportunities in neonatal intensive care.
Main Results:
- Recent research clarifies the complex development of neonatal skin defenses and immune programming by commensals.
- Understanding skin-microbe interactions is key to modulating immune tolerance and long-term health.
- Effective neonatal care practices can mitigate infection risks.
Conclusions:
- The neonatal skin is an active immune organ, critical for infant health and development.
- Targeting skin barrier function and microbiome interactions offers promising avenues for neonatal care.
- Future strategies should integrate microbiome insights for enhanced skin-centered neonatal health approaches.
Abstract:
The neonatal skin is central to early survival and immune development. Far from being a passive mechanical barrier, it integrates physical, chemical, and microbial defences that together protect the infant in the immediate postnatal period. In preterm infants, structural immaturity, reduced antimicrobial capacity, and altered microbial colonisation confer heightened vulnerability to infection and inflammation. At the same time, the neonatal period represents a critical window during which skin-microbe interactions shape tolerance and long-term immune trajectories. This review summarises recent advances in understanding the development of the skin barrier, antimicrobial and innate immune defences, and the role of commensals in immune programming. Translational opportunities for neonatal care are discussed, including skin protective practices, antisepsis, and emollient use that may reduce infection risk in the neonatal intensive care unit. Finally, we consider future directions in microbiome-informed and skin-centred strategies.
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