To understand better the events in early avian host immune responses to Salmonella Enteritidis (SE), we examined messenger-RNA (mRNA) expression for eight genes: CXCLi1[K60], CXCLi2 [IL-8/CAF], interferon (IFN)-γ, interleukin (IL) -1β, IL-6, IL-12α, IL-12β, and gallinacin (Gal)-2 in the ceca of young chicks 1 wk postinoculation with SE. Cecum tissue sections were stained and evaluated for the presence of macrophages, lymphocytes, heterophils, and apoptotic cells following SE infection. With the use of quantitative reverse transcriptase–polymerase chain reaction (RT-PCR), SE infection was associated with a significant (P < 0.01) upregulation of cecal CXCLi1 and CXCLi2 mRNA expression. Infection with SE was also associated (P < 0.05) with increased staining for macrophages and decreased apoptosis (single-stranded DNA [ssDNA]) in cecal tissue sections when these sections were compared with those of uninfected animals. Changes in chemokine expression and cell population dynamics are a direct result of SE infection, as uninfected animals do not show these alterations. Thus, these SE-induced changes reflect the host immune response to SE in young chickens.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 52 • No. 2