Immature lung and acute lung injury

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Updated: Aug 30, 2026

Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs
08:58

Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs

Published on: October 31, 2025

P Zoban1, M Cerný

  • 1Department of Neonatology, Second Faculty of Medicine, Charles University, University Hospital Motol, V úvalu 84, 150 06 Prague 5, Czech Republic. petr.zoban@lfmotol.cuni.cz

Physiological Research
|October 11, 2003
PubMed

Insights

Acute lung injury affects premature infants, causing lung damage through factors like immaturity and inflammation. Understanding these causes is crucial for preventing chronic lung disease in newborns.

Area of Science:

  • Neonatology
  • Pediatric Pulmonology
  • Developmental Biology

Background:

  • Acute lung injury (ALI) is a significant concern in very low birth weight (VLBW) and extremely low birth weight (ELBW) infants.
  • The pathological cascade involves lung immaturity, oxidative stress, inflammation, and mechanical stress, leading to bronchial, alveolar, and capillary damage.
  • ALI may precede the development of chronic lung disease of prematurity or bronchopulmonary dysplasia.

Purpose of the Study:

  • To review the primary factors contributing to acute lung injury in VLBW and ELBW infants.
  • To elucidate the mechanisms of lung injury in premature neonates, drawing from existing research.
  • To highlight the multifactorial etiology of ALI as a syndrome rather than a distinct nosological unit.

Main Methods:

  • Review of experimental models and clinical studies, primarily focusing on adult patients.
  • Extrapolation of findings from adult studies to understand mechanisms in premature infants.
  • Synthesis of current knowledge on lung immaturity, mechanical injury, oxidative stress, and inflammation.

Main Results:

  • Lung immaturity is a key predisposing factor in premature infants.
  • Oxidative stress, inflammation, and mechanical insults contribute significantly to lung tissue injury.
  • Existing research predominantly relies on adult models, necessitating careful interpretation for neonatal ALI.

Conclusions:

  • Acute lung injury in premature infants is complex and multifactorial.
  • Lung immaturity, mechanical ventilation, oxidative stress, and inflammation are critical contributors.
  • Further research is needed to fully understand and address ALI in the neonatal population.

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