ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (6): 1004-1010.doi: 10.11843/j.issn.0366-6964.2014.06.020

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Effect of Infection of E.necatrix on Heat Shock Protein (HSP)-70 Expression in Intestinal Tissue of Broiler Chickens

ZHAI Jie1,LYU Zhi-hui1,2,MA Chun-xia1,3,GAO Xue-li1,LIU Chao-nan1,WANG Quan-jie1,LYU Xiao-ping1,ZHENG Shi-min1*   

  1. (1.College of Veterinary Medicine,Northeast Agricultural University,Harbin 150030, China;2.Zhuhai Campus of Zunyi Medical College,Zhuhai 519041, China;3.Guangxi Veterinary Research Institute,Nanning 530001, China)
  • Received:2013-12-09 Online:2014-06-23 Published:2014-06-23

Abstract:

Ninety chickens were divided into E.necatrix one time infection group, E.necatrix twice infection group,and control group.We researched dynamic change of HSP-70 expression in intestinal tissue of chickens infected with E.necatrix applying immunohistochemical method.The results showed that the HSP-70 expression in intestinal tissue of twice infection chickens were lower than the control chickens by different degrees at the 5th to 9th days after primer infection,the HSP-70 expression of duodenum,jejunum and caecum were significant or very significant lower than control chickens (P<0.05 or P<0.01),later rising rapidly,higher than control chickens at the 14th day and reached the peak;the HSP-70 expression in duodenum and jejunum of chickens showing a trend of significantly lower than control chickens at first,then gradually rising and higher than control chickens after the second challenge infection.But,the HSP-70 expression in intestinal tissue of E.necatrix one time infection chickens was higher than control chickens at the 6th,10th,15th day.These indicate that the primer infection have a certain degree of inhibition of HSP-70 expression in intestinal tissue of chickens,and the increase of HSP-70 expression is closely related with the degree of damage on the body with E.necatrix infection.This study provides important reference for the further study of pathogenic mechanism of coccidian.

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