Tuberculosis and Respiratory Diseases

  • 제70권6호
  • /
  • Pages.482-489
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  • 2011
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  • 1738-3536(pISSN)
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  • 2005-6184(eISSN)
대한결핵및호흡기학회 (The Korean Academy of Tuberculosis and Respiratory Diseases)
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Effect of Apocynin on Acute Lung Injury in Rats Given Interleukin-$1{\alpha}$ Intratracheally

  • Lee, Young-Man (Department of Physiology, The Catholic University of Daegu School of Medicine)
  • 투고 : 2011.02.09
  • 심사 : 2011.05.09
  • 발행 : 2011.06.30
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초록

Background: Based on the assertion that apocynin diminishes acute lung injury (ALI) by inhibition of NADPH oxidase, the effect of apocynin was tested in interleukin-$1{\alpha}$ (IL-1)-induced ALI in rats. Methods: IL-1 was insufflated into the trachea of Sprague-Dawley rats to induce ALI, and apocynin (8 mg/kg) was given intravenously for inhibition of NADPH oxidase. In addition, we determined whether apocynin inhibited generation of superoxide anions from isolated human neutrophils. Five hours after IL-1 instillation, lung injury parameters, expression of cytosolic phospholipase A2 (cPLA2) by cells from bronchoalveolar lavage (BAL), an index of oxidative stress in lung tissues (${\gamma}$-glutamyltranspeptidase, activity), and ultrastructure of alveolar type II (AT II) cells were evaluated. Results: Apocynin decreased the generation of free radicals from phorbol myristate (PMA)-activated neutrophils in vitro, but did not ameliorate ALI. IL-1 induced enhancement of the expression of cPLA2 on neutrophils was not altered by apocynin. Conclusion: Apocynin induced suppression of the generation of superoxide anions from neutrophils by inhibition of NADPH oxidase does not attenuate IL-1-induced ALI in rats.

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참고문헌

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피인용 문헌

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