Antioxidant and anti-inflammatory effects of Astragalus polysaccharide on EA.hy926 cells

Huang,Wei  Min; Liang,Yong  Qi; Tang,Li  Jun; Ding,Yue; Wang,Xiao  Hong

doi:10.3892/etm.2013.1074

Antioxidant and anti-inflammatory effects of Astragalus polysaccharide on EA.hy926 cells

Authors:
- Wei Min Huang
- Yong Qi Liang
- Li Jun Tang
- Yue Ding
- Xiao Hong Wang
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Affiliations: Department of Neonatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
Published online on: April 23, 2013 https://doi.org/10.3892/etm.2013.1074
Pages: 199-203

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Abstract

The aim of this study was to explore the role of astragalus polysaccharide (APS) in the pathogenesis of bronchopulmonary dysplasia (BPD) in preterm children using an established BPD cell model. EA.hy926 cell cultures were divided into three groups: the air group as the blank control, the hyperoxia group as the experimental control and the APS group (2.5 mg/ml). The production of superoxide dismutase (SOD), malondialdehyde (MDA) and reactive oxygen species (ROS) were analyzed by biochemical assays. Real-time reverse transcription-polymerase chain reaction (RT-PCR) and western blotting were used to detect the RNA and protein expression levels of inflammatory cytokines, including interleukin (IL)-8, intercellular adhesion molecule 1 (ICAM-1) and nuclear factor (NF)-κB p65. Compared with the hyperoxia group, the ROS and MDA levels of the APS group were significantly reduced. By contrast, SOD production was significantly increased. The expression of IL-8, ICAM‑1 and NF-κB p65 in the APS group was downregulated. APS acts as an antioxidant by stimulating SOD production while inhibiting lipid peroxidation in the EA.hy926 cells. Furthermore, this study demonstrated that APS retards the inflammatory response, as shown by the reduced expression of NF-κB p65, IL-8 and ICAM-1 when APS was added.

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