›› 2017, Vol. 44 ›› Issue (2): 402-410.doi: 10.16431/j.cnki.1671-7236.2017.02.015

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Establishment of Model for Oxidative Stress in Mice Immune Cells Induced by PCV2 in vivo

YANG Jian, YIN Dan, LUO Wen-juan, LI Lu, WEN Lu-ting, HAO Zhu-bing, WEI Ying-yi, ZENG Yun, HU Ting-jun   

  1. College of Animal Science and Technology, Guangxi University, Nanning 530005, China
  • Received:2016-07-25 Online:2017-02-20 Published:2017-02-25

Abstract:

The aim of this experiment was to establish the oxidative stress model of immune cells in mice induced by PCV2. Optimal infection titer and time of PCV2 were selected. On the 1st,2nd and 3rd day or 1st, 3rd,5th and 7th day,Kunming mice were treated with 100 PCV2 or 10-1 PCV2 by 3 ways (intraperitoneal injection, intranasal administration and intragastrical administration). 7, 14, 21 d post administration, we killed the mice. Reactive oxygen species (ROS),total glutathione (T-GSH),reduced glutathione (GSH),oxidized glutathione (GSSG) levels and xanthine oxidase (XOD), myeloperoxidase (MPO) and inducible nitric oxide synthase (iNOS) activity were determined to investigate the relationship between the infection time point and the change of ROS level after PCV2 infection. Thus to establish mice immune cells oxidative stress model. The results showed that infection with 100 PCV2 virus in 3 ways every day both at day 1, 2, 3 and 1 mL per mouse was the best program for the follow-up experiment. The intracellular level of ROS of mice infected with PCV2 was extremely significantly increased both at 7, 14 and 21 d (P < 0.01);7 and 14 d post infection, GSH level of PCV2 infected mice had significant difference compared with that of control group (P < 0.05). 7 d after infection, GSSG level was extremely significantly higher than that of control group (P < 0.01); 7 d after infection, T-GSH level was significantly lower than that of control group (P < 0.05), T-GSH was extremely significantly lower than that of control group at 14 d post infection (P < 0.01). XOD, MPO and iNOS activity between PCV2 infection group and blank control group were significantly different at 7 d post infection (P < 0.05). It suggested that PCV2 successfully infected mice, experimental infection programme was Kunming mice were treated with 100 PCV2 by three ways (intraperitoneal injection, intranasal administration and intragastrical administration) both at the 1st,2nd and 3rd day of the experiment.The best condition to establish the oxidative stress model of immune cells in mice was using 100 PCV2 to infect for 7 days.

Key words: PCV2; mice; immune cells; oxidative stress model

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