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Related Experiment Videos

Platelet-activating factor antagonists decrease lung protein leak in preterm ventilated rabbits.

B L Tabor1, J F Lewis, M Ikegami

  • 1Department of Obstetrics and Gynecology, Harbor--University of California, Los Angeles Medical Center, Torrance.

American Journal of Obstetrics and Gynecology
|September 1, 1992
PubMed
Summary

Platelet-activating factor (PAF) antagonists significantly reduced protein leakage in preterm ventilated rabbit lungs, suggesting PAF

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Area of Science:

  • Neonatal Physiology
  • Pulmonary Medicine
  • Pharmacology

Background:

  • Preterm ventilated lungs exhibit increased protein leakage, contributing to neonatal respiratory distress syndrome.
  • Platelet-activating factor (PAF) is implicated in this pathological protein leak.

Purpose of the Study:

  • To investigate the role of platelet-activating factor (PAF) in protein leakage in preterm ventilated lungs.
  • To assess the efficacy of PAF antagonists in mitigating this leakage.

Main Methods:

  • Preterm rabbits (gestation day 28) were ventilated for 30 minutes.
  • Animals received saline or PAF antagonists.
  • Lung compliance, surfactant pool size, and protein leak were measured.

Main Results:

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  • PAF antagonists significantly reduced protein leakage into air spaces by over 50% and into the lung by 40%.
  • No significant differences were observed in lung compliance or surfactant pool size among groups.

Conclusions:

  • Platelet-activating factor (PAF) plays a critical role in the protein leak observed in preterm ventilated lungs.
  • Targeting PAF may be a therapeutic strategy for neonatal respiratory distress syndrome.