Erschienen in:
01.10.2013
Early Increase in Alveolar Macrophage Prostaglandin 15d-PGJ2 Precedes Neutrophil Recruitment into Lungs of Cytokine-Insufflated Rats
verfasst von:
Ana Fernandez-Bustamante, Jelena Klawitter, Paul Wilson, Nancy D. Elkins, Amanda Agazio, Takahiro Shibata, Koji Uchida, Uwe Christians, John E. Repine
Erschienen in:
Inflammation
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Ausgabe 5/2013
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ABSTRACT
Early detection and prevention is an important goal in acute respiratory distress syndrome research. We determined the concentration of the anti-inflammatory 15-deoxy-Δ12,14-prostaglandin-J2 (15d-PGJ2) and other components of the cyclopentenone prostaglandin cascade in relation to lung inflammation in cytokine (IL-1/LPS)-insufflated rats. We found that 15d-PGJ2 levels increase in the bronchoalveolar lavage (BAL) fluid of rats insufflated with cytokines 2 h before. BAL 15d-PGJ2 increases preceded neutrophil recruitment, lung injury, and oxidative stress in the lungs of cytokine-insufflated rats. 15d-PGJ2 was localized in alveolar macrophages that decreased following cytokine insufflation. 15d-PGJ2 may constitute an early biomarker of lung inflammation and may reflect an endogenous attempt to regulate ongoing inflammation in macrophages and elsewhere after cytokine insufflation.