Poult. Sci.
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Poult Sci 2008. 87:1768-1772. doi:10.3382/ps.2008-00166
© 2008 Poultry Science Association
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IMMUNOLOGY, HEALTH, AND DISEASE: Research Note

The Pathogenesis of Salmonella Enteritidis in Experimentally Infected Ducks: A Quantitative Time-Course Study Using TaqMan Polymerase Chain Reaction1

S. X. Deng*, A. C. Cheng*,{dagger},2, M. S. Wang*,{dagger},{ddagger}, B. Yan*, N. C. Yin*, S. Y. Cao*, Z. H. Zhang* and P. Cao*

* Avian Diseases Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Yaan, Sichuan, 625014, China; {dagger} Key Laboratory of Animal Diseases and Human Health of Sichuan Province, Yaan, Sichuan, 625014, China; and {ddagger} College of Life Science and Technology of Southwest University for Nationalities, Chengdu, Sichuan, 610041, China

2 Corresponding author: chenganchun{at}vip.163.com

Ducks were subcutaneously infected with a high-virulence strain of Salmonella enterica ssp. enterica serovar Enteritidis (Salmonella Enteritidis). The kinetics of the Salmonella Enteritidis genomic DNA loads, the immunohistochemical localization of the bacterial antigens, and the histopathological examination in various tissues were investigated. The results showed that the time course of the appearance of the Salmonella Enteritidis bacterial antigens and the lesions in various tissues was coincident with the bacterial load of the organism in various infected tissues. This suggests that Salmonella Enteritidis loads in systemic organs are closely correlated with the progression of the infection.

Key Words: Salmonella Enteritidis • pathogenesis • quantitative study • duck

1 The first 4 authors contributed equally to this work.






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