ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2016, Vol. 47 ›› Issue (6): 1215-1221.doi: 10.11843/j.issn.0366-6964.2016.06.017

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mRNA Change Analysis of Eight Cytokines in Ducklings Stimulated by Attenuated Duck Hepatitis A Virus Genotype A MY Strain

ZHANG Huan-rong*,ZHANG Bing,WANG Dong,YUE Hua   

  1. (College of Life Science and Technology,Southwest University for Nationalities,Chengdu 610041,China)
  • Received:2015-11-25 Online:2016-06-23 Published:2016-06-23

Abstract:

In order to explore the roles of cytokines responding to attenuated duck hepatitis A virus genotype A (DHAV-A) vaccine immunization,the effects of attenuated DHAV-A MY strain on cytokine transcription in ducklings were analyzed.The mRNA transcription levels of 8 cytokines,such as IFN-α,IFN-β,IFN-γ and IL-1β,IL-2,IL-6,IL-8,and TNF-α,were determined by RRT-PCR in liver,spleen and brain of ducklings at different time points of 0.25 0.5,1,2,3 and 5 days post attenuated DHAV-A MY strain injecting 1-day-old SPF ducklings,and the virus loads of DHAV-A MY strain in liver,spleen and brain were also detected by RRT-PCR.The results indicated that the virus load reached the highest level in liver and brain at 2 d time point,and at 3 d time point in spleen post attenuated DHAV-A MY strain injection.The mRNA transcription levels of 8 cytokines in liver,spleen and brain up-regulated very significantly at the corresponding time points when the virus load reached the highest level post DHAV-A MY strain injection (P<0.01).The results indicated that attenuated DHAV-A MY strain could stimulate the transcription of anti-viral cytokines IFN-α,IFN-β,IFN-γ and TNF-α,as well as proinflammatory cytokines IL-1β,IL-2,IL-6 and IL-8,our results enrich the immunization mechanism of DHAV-A MY strain.

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