BML-111, a lipoxin receptor agonist, attenuates ventilator-induced lung injury in rats

Shock. 2014 Apr;41(4):311-6. doi: 10.1097/SHK.0000000000000104.

Abstract

Mechanical ventilation can cause structural and functional disturbances in the lung termed ventilator-induced lung injury (VILI). The aim of this study was to evaluate whether BML-111, a lipoxin receptor agonist, could attenuate VILI. Following induction of anesthesia and tracheostomy, Sprague-Dawley rats were ventilated with low tidal volume (6 mL/kg) or high tidal volume (20 mL/kg, HVT) for 4 h. Some rats subjected to HVT ventilation received BML-111 or vehicle (saline) by intraperitoneal injection. Some rats subjected to HVT and BML-111(1 mg/kg) received BOC-2 (a FPR2/ALX antagonist) intraperitoneally 30 min before BML-111. Sham rats were tracheotomized without ventilation. Treatment with BML-111 attenuated VILI, as evidenced by improved oxygenation and reduced histological injury compared with HVT-induced lung injury. BML-111 decreased indices of inflammation such as interleukin 1β, interleukin 6, tumor necrosis factor α, and bronchoalveolar lavage neutrophil infiltration. Administration with BML-111 suppressed the decrement of the nuclear factor κB (NF-κB) inhibitor IκB-α, diminished NF-κB activation, and reduced activation of mitogen-activated protein kinase in VILI. This study indicates that BML-111 attenuated VILI via a NF-κB and mitogen-activated protein kinase dependent mechanism. BML-111 may be a promising strategy for alleviation of VILI in patients subjected to mechanical ventilation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Anti-Inflammatory Agents, Non-Steroidal / pharmacology
  • Anti-Inflammatory Agents, Non-Steroidal / therapeutic use*
  • Bronchoalveolar Lavage Fluid / cytology
  • Cytokines / biosynthesis
  • Drug Evaluation, Preclinical / methods
  • Heptanoic Acids / pharmacology
  • Heptanoic Acids / therapeutic use*
  • I-kappa B Proteins / metabolism
  • Male
  • Mitogen-Activated Protein Kinases / metabolism
  • NF-KappaB Inhibitor alpha
  • NF-kappa B / metabolism
  • Peroxidase / metabolism
  • Phosphorylation
  • Rats
  • Rats, Sprague-Dawley
  • Receptors, Lipoxin / agonists*
  • Transcription Factor AP-1 / metabolism
  • Transcription Factor RelA / genetics
  • Transcription Factor RelA / metabolism
  • Translocation, Genetic / drug effects
  • Up-Regulation / drug effects
  • Ventilator-Induced Lung Injury / metabolism
  • Ventilator-Induced Lung Injury / pathology
  • Ventilator-Induced Lung Injury / prevention & control*

Substances

  • 5(S),6(R)-7-trihydroxyheptanoic acid, methyl ester
  • Anti-Inflammatory Agents, Non-Steroidal
  • Cytokines
  • Heptanoic Acids
  • I-kappa B Proteins
  • NF-kappa B
  • Nfkbia protein, rat
  • Receptors, Lipoxin
  • Rela protein, rat
  • Transcription Factor AP-1
  • Transcription Factor RelA
  • NF-KappaB Inhibitor alpha
  • Peroxidase
  • Mitogen-Activated Protein Kinases