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Updated: Jun 18, 2026

Lavage-induced Surfactant Depletion in Pigs As a Model of the Acute Respiratory Distress Syndrome (ARDS)
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Surfactant lavage decreases systemic interleukin-1 beta production in meconium aspiration syndrome

Pei-Wei Wang1, Mei-Jy Jeng, Liang-Shun Wang

  • 1Institute of Emergency and Critical Care Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan.

Pediatrics International : Official Journal of the Japan Pediatric Society
|November 19, 2009
PubMed
Abstract

Insights

Surfactant lavage improved oxygenation and reduced lung inflammation and cell death in piglets with meconium aspiration syndrome (MAS). This treatment offers a potential therapeutic strategy for MAS by mitigating pro-inflammatory responses and apoptosis.

Area of Science:

  • Neonatal Medicine
  • Pulmonology
  • Cell Biology

Background:

  • Meconium aspiration syndrome (MAS) is a serious condition in newborns.
  • Surfactant lavage is used to clear meconium, but its effects on inflammation and cell death are not fully understood.

Purpose of the Study:

  • To investigate the impact of therapeutic surfactant lavage on pro-inflammatory cytokines and alveolar cell apoptosis in a piglet model of MAS.

Main Methods:

  • MAS was induced in newborn piglets via meconium instillation.
  • Piglets were randomly assigned to receive surfactant lavage or serve as controls.
  • Cardiopulmonary parameters, serum cytokine levels (IL-1β, IL-6, TNF-α), and lung tissue apoptosis were analyzed.

Main Results:

  • Surfactant lavage significantly improved gas exchange and reduced serum IL-1β levels compared to controls.
  • Apoptotic cell death in lung tissue was significantly lower in the lavage group.
  • Apoptosis was reduced in both dependent and non-dependent lung regions after lavage.

Conclusions:

  • Therapeutic surfactant lavage is effective in improving oxygenation in MAS.
  • It reduces systemic pro-inflammatory cytokine production, specifically IL-1β.
  • Surfactant lavage alleviates lung cell apoptosis in MAS, suggesting a protective effect.

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