ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2017, Vol. 48 ›› Issue (10): 1983-1989.doi: 10.11843/j.issn.0366-6964.2017.010.022

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Changes of Cell Apoptosis and Relevant Factor in Central Immune Organs of SPF Chicks Infected with Reticuloendotheliosis Virus

FU Li-sheng1, HOU Ning1,2, WANG Xiao-yan1, GAO Xue-li1, LIU Chao-nan1, LÜ Xiao-ping1, ZHENG Shi-min1*   

  1. 1. Heilongjiang Key Laboratory of Laboratory Animal and Comparative Medicine, Colloge of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China;
    2. Qinhuangdao Saintland Ocean Park, Qinhuangdao 066000, China
  • Received:2017-04-24 Online:2017-10-23 Published:2017-10-23
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Abstract:

The research was conducted to study the effects of reticuloendotheliosis virus (REV) on cell apoptosis, enzyme activities and expression of relevant factors in immune organs of chicks. Seventy one-day old SPF chicks were randomly selected into REV infection groups (I) and control groups (C). The methods of enzyme activities detection kit, RT-PCR, ELISA and TUNEL were applied to detect activities of Caspase-3 and Caspase-9, expression of Bcl-2 and cell apoptosis in central immune organs. The results showed that the detected indexes in thymus of SPF chicks infected with REV were significantly higher than control groups at 7 to 28 days after infection. The indexes in bursa of Fabricius of SPF chicks infected with REV were significantly increased than control groups at 7 to 35 days after infection. These data indicate that cell apoptosis caused by enhancement of Caspase-3 and Caspase-9 activities, up-regulated expression of the Bcl-2 mRNA and protein in central immune organs of SPF chicks infected with REV, are closely related to immune function suppression.

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