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Development of a Neonatal Piglet Acute Lung Injury Model Recreating the Early Environment of Preterm Infant Lungs
Published on: October 31, 2025
Bronchopulmonary dysplasia and inflammatory biomarkers in the premature neonate
C L Bose1, C E L Dammann, M M Laughon
1Division of Neonatal-Perinatal Medicine, University of North Carolina, Chapel Hill, North Carolina, USA. cbose@med.unc.edu
Insights
Inflammation significantly contributes to bronchopulmonary dysplasia (BPD), a common complication in premature infants. Understanding inflammatory biomarkers in airway fluids may help identify infants at risk for BPD.
Area of Science:
- Neonatal Medicine
- Pulmonary Medicine
- Inflammation Research
Background:
- Bronchopulmonary dysplasia (BPD) is a critical complication of premature birth.
- Lung inflammation, initiated prenatally and worsened by ventilation and oxygen, drives BPD pathogenesis.
- A complex interplay of inflammatory mediators, including chemokines, adhesion molecules, and cytokines, contributes to BPD development.
Purpose of the Study:
- To review the multifaceted role of inflammation in the pathogenesis of bronchopulmonary dysplasia.
- To explore the involvement of various inflammatory proteins and mediators in BPD development.
- To discuss the utility of airway fluid biomarkers in understanding BPD and identifying at-risk infants.
Main Methods:
- Review of existing literature on inflammation and bronchopulmonary dysplasia.
- Analysis of the roles of chemokines, adhesion molecules, pro-inflammatory and anti-inflammatory cytokines, and proteases.
- Inclusion of data from biomarker measurements in infant airway fluid samples.
Main Results:
- Inflammation is a key factor in BPD development, involving a cascade of molecular interactions.
- Specific proteins facilitate inflammatory cell recruitment, migration, and tissue damage in the lungs.
- Growth factors and repair mediators also influence lung structure during BPD recovery.
- Airway fluid biomarker measurements offer insights into inflammatory processes in BPD.
Conclusions:
- Inflammation is central to the development of bronchopulmonary dysplasia in premature infants.
- Understanding the inflammatory cascade and utilizing biomarker data can aid in BPD risk identification.
- Further research into inflammatory pathways may lead to improved prevention and treatment strategies for BPD.
Abstract:
Bronchopulmonary dysplasia (BPD) is the most common, serious sequela of premature birth. Inflammation is a major contributor to the pathogenesis of BPD. Often initiated by a pulmonary fetal inflammatory response, lung inflammation is exacerbated by mechanical ventilation and exposure to supplemental oxygen. In response to these initiators of injury, a complex interaction occurs between proteins that attract inflammatory cells (ie, chemokines), proteins that facilitate the transendothelial migration of inflammatory cells from blood vessels (ie, adhesion molecules), proteins that promote tissue damage (ie, pro-inflammatory cytokines and proteases), and proteins that modulate the process (eg, anti-inflammatory cytokines, binding proteins and receptor antagonists). In addition, during recovery from inflammatory injury, growth factors and other substances that control normal lung growth and mediate repair influence subsequent lung structure. In this review, we discuss the role of each aspect of the inflammatory process in the development of BPD. This discussion will include data from measurements of biomarkers in samples of fluid aspirated from the airways of human infants relevant to each phase of inflammation. Despite their limitations, these measurements provide some insight into the role of inflammation in the development of BPD and may be useful in identifying infants at risk for the disease.
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