Effects of Scutellariae Radix Extracts on LPS-induced Acute Lung Injury

황금이 LPS로 유발된 급성 폐 손상에 미치는 영향

  • Sin, Ho-Phil (Department of Internal Medicine, College of Oriental Medicine, Daegu Haany University) ;
  • Kim, Jong-Dae (Department of Internal Medicine, College of Oriental Medicine, Daegu Haany University) ;
  • Park, Mee-Yeon (Department of Internal Medicine, College of Oriental Medicine, Daegu Haany University) ;
  • Choi, Hae-Yun (Department of Internal Medicine, College of Oriental Medicine, Daegu Haany University)
  • 신호필 (대구한의대학교 한의과대학 내과학교실) ;
  • 김종대 (대구한의대학교 한의과대학 내과학교실) ;
  • 박미연 (대구한의대학교 한의과대학 내과학교실) ;
  • 최해윤 (대구한의대학교 한의과대학 내과학교실)
  • Received : 2010.12.27
  • Accepted : 2011.01.18
  • Published : 2011.02.25

Abstract

The object of this study was to observe the effects of Scutellariae Radix (SR) aqueous extracts on lipopolysaccharide (LPS)-induced rat acute lung injury. Five different dosages of SR extracts were orally administered once a day for 28 days before LPS treatments, and then 5 hours after lipopolysaccharide treatment, all rats were sacrificed. 8 groups, each of 16 rats per group were used in the present study. Changes on the body weights, lung weights, pulmonary transcapillary albumin transit, arterial gas parameters (pH, $PaO_2$ and $PaCO_2$) bronchoalveolar lavage fluid (BALF) protein, lactate dehydrogenase (LDH) and proinflammatory cytokines tumor necrosis factor-${\alpha}$ (TNF-${\alpha}$), interleukin-1${\beta}$ (IL-1${\beta}$) contents, total cell numbers, neutrophil and alveolar macrophage ratios, lung malondialdehyde (MDA), myeloperoxidase (MPO), proinflammatory cytokine TNF-${\alpha}$ and IL-1${\beta}$ contents were observed with histopathology of the lung, changes on luminal surface of alveolus (LSA), thickness of alveolar septum, number of polymorphonuclear neutrophils (PMNs). The results were compared with a potent antioxidant ${\alpha}$-lipoic acid, 60 mg/kg, in which the effects on LPS-induced acute lung injury were already confirmed. The results obtained in this study suggest that over 125 mg/kg of SR extracts showed favorable effects on the LPS-induced acute lung injury, and 250 mg/kg of SR extracts resembling acute respiratory distress syndrome mediated by their antioxidant and anti-inflammatory effects and .as similar to ${\alpha}$-lipoic acid in the present study. Therefore, it is expected that SR will be showed favorable effects on the acute respiratory distress syndrome.

Keywords

References

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