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Archives of Pharmacal Research

, Volume 42, Issue 8, pp 704–711 | Cite as

Astragalin reduces lipopolysaccharide-induced acute lung injury in rats via induction of heme oxygenase-1

  • Donghua Zheng
  • Dawei Liu
  • Na Liu
  • Yukun Kuang
  • Qiang TaiEmail author
Research Article
  • 99 Downloads

Abstract

Astragalin, a bioactive component of medicinal plants such as Rosa agrestis, has anti-inflammatory and antioxidant features. Induction of heme oxygenase (HO)-1 is an effective strategy to reduce excessive generated oxidants during the pathogenesis of acute lung injury (ALI). The aim of the present study is to investigate that whether the anti-inflammatory and antioxidant features of astragalin is HO-1 dependent in lipopolysaccharide (LPS)-induced ALI. Sprague–Dawley rats were used in animal study. Intratracheal LPS was performed to induce experimental ALI model. Astragalin was administrated 1 h after LPS challenge. Human lung epithelial cells were used in cell study. Samples from rats were harvested at 24 h post LPS challenge. Astragalin treatment inhibited LPS-induced inflammatory cells infiltration in the lung and pulmonary edema. Astragalin treatment markedly enhanced the activity of HO-1 compared with vehicle-treated group at 24 h post LPS challenge. Levels of lipid hydroperoxide, a marker for oxidative stress, were decreased in astragalin-treated animals compared with vehicle-treated group. However, the protective effect of astragalin on LPS-induced ALI was abolished in an inhibitor of HO-1-treated animals. Moreover, the astragalin-induced the upregulation of HO-1 in human lung epithelial cells was inhibited when nuclear factor erythroid-2-related factor 2 (Nrf2) was silenced by small interfering RNA. Astragalin reduces LPS-induced ALI via activation of Nrf2/HO-1 pathway.

Keywords

Astragalin Acute lung injury HO-1 Nrf2 

Notes

Acknowledgements

We thank Xiao Qing and Sen Luo for outstanding technical support for experimental assistance.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© The Pharmaceutical Society of Korea 2019

Authors and Affiliations

  • Donghua Zheng
    • 1
  • Dawei Liu
    • 2
  • Na Liu
    • 1
  • Yukun Kuang
    • 3
  • Qiang Tai
    • 1
    Email author
  1. 1.Department of Critical Care Medicine, The First Affiliated HospitalSun Yat-sen UniversityGuangzhouChina
  2. 2.Department of Pathology, The First Affiliated HospitalSun Yat-sen UniversityGuangzhouChina
  3. 3.The Division of Pulmonary and Critical Care Medicine, The First Affiliated HospitalSun Yat-sen UniversityGuangzhouChina

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