›› 2013, Vol. 40 ›› Issue (11): 175-179.

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Effect of Avian Influenza Virus Subtype H9 on Antioxidant Function in MDCK Cells

ZHENG Liang-yan1, CHEN Long1, XU Jia-hua2, TANG Zhao-xin1,2   

  1. 1. College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China;
    2. Zhaoqing Dahuanong Biology Medicine Co., Ltd., Guangzhou 526238, China
  • Received:2013-04-15 Online:2013-11-20 Published:2013-12-19

Abstract: After MDCK cells were seeded in 6-well culture plate at a density of 8×104/cm2,avian influenza virus subtype H9 were inoculated with those cells at different doses (0,10-3×EID50,10-4×EID50 and 10-5×EID50).Experimental results showed that compared with the control group, hydrogen peroxide (H2O2) and hydroxyl radical (·OH) in MDCK cells inoculated high-dose of avian influenza virus subtype H9 enhanced significantly (P>0.05),and superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activity significantly decreased (P>0.05) in those cells. In addition,intracellular malondialdehyde (MDA) had a significant increasing (P>0.05) in MDCK cells treated with high-dose of virus. In conclusion,avian influenza virus subtype H9 could significantly enhance the content of reactive oxygen species (ROS) in MDCK cells, reduce the activities of antioxidant enzymes,and hinder ROS scavenging mechanisms within the cell,cause the cell lipid peroxidation,which damaged cells.

Key words: avian influenza virus subtype H9; MDCK cells; antioxidant function

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