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http://dx.doi.org/10.4046/trd.2010.69.4.256

Moxifloxacin Alleviates Oleic Acid-provoked Neutrophilic Respiratory Burst in the Rat Lung through the Inhibition of Cytosolic Phospholipase $A_2$  

Lee, Young-Man (Department of Physiology, Daegu Catholic University School of Medicine)
Publication Information
Tuberculosis and Respiratory Diseases / v.69, no.4, 2010 , pp. 256-264 More about this Journal
Abstract
Background: According to the notion of the immunoregulatory functions of moxifloxacin (MFX), the effect of MFX on the neutrophilic respiratory burst in conjunction with the expression of cytosolic phospholipase $A_2$ ($cPLA_2$) was investigated. Methods: The effects and possible mechanisms of MFX on neutrophilic respiratory burst in oleic acid (OA)-induced acutely injured rats lung and OA-stimulated, isolated murine neutrophils were probed, associated with the expression of cytosolic phospholipase $A_2$ in vivo and in vitro. Results: In the OA-induced acutely-injured lungs, neutrophils were accumulated, which was attenuated by MFX. The parameters denoting a neutrophilic respiratory burst, such as nitro blue tetrazolium reaction, cytochrome-c reduction, neutrophil aggregation, $H_2O_2$ production in neutrophils revealed increased neutrophilic respiratory burst by OA, and MFX decreased all of these parameters. In addition, the enhanced expression of $cPLA_2$ in the lung and isolated murine neutrophils by OA were decreased by MFX. Conclusion: MFX suppresses the OA-induced neutrophilic respiratory burst by the suppression of $cPLA_2$ in neutrophils.
Keywords
Oleic Acid; Neutrophils; Phospholipases $A_2$, Cytosolic; Moxifloxacin;
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