NDLI: Analysis of Chicken Mucosal Immune Response to Eimeria tenella and Eimeria maxima Infection by Quantitative Reverse Transcription-PCR

Content Provider	PubMed Central
Author	Laurent, Fabrice Mancassola, Roselyne Lacroix, Sonia Menezes, Rita Naciri, Muriel
Editor	Mansfield, J. M.
Copyright Year	2001
Abstract	The recent cloning of chicken genes coding for interleukins, chemokines, and other proteins involved in immune regulation and inflammation allowed us to analyze their expression during infection with Eimeria. The expression levels of different genes in jejunal and cecal RNA extracts isolated from uninfected chickens and chickens infected with Eimeria maxima or E. tenella were measured using a precise quantitative reverse transcription-PCR technique. Seven days after E. tenella infection, expression of the proinflammatory cytokine interleukin-1β (IL-1β) mRNA was increased 80-fold. Among the chemokines analyzed, the CC chemokines K203 (200-fold) and macrophage inflammatory factor 1β (MIP-1β) (80-fold) were strongly upregulated in the infected ceca, but the CXC chemokines IL-8 and K60 were not. However, the CXC chemokines were expressed at very high levels in uninfected cecal extracts. The levels of gamma interferon (IFN-γ) (300-fold), inducible nitric oxide synthase (iNOS) (200-fold), and myelomonocytic growth factor (MGF) (50-fold) were also highly upregulated during infection with E. tenella, whereas cyclooxygenase 2 showed a more modest (13-fold) increase. The genes upregulated during E. tenella infection were generally also upregulated during E. maxima infection but at a lower magnitude except for those encoding MIP-1β and MGF. For these two cytokines, no significant change in expression levels was observed after E. maxima infection. CD3+ intraepithelial lymphocytes may participate in the IFN-γ upregulation observed after infection, since both recruitment and upregulation of the IFN-γ mRNA level were observed in the infected jejunal mucosa. Moreover, in the chicken macrophage cell line HD-11, CC chemokines, MGF, IL-1β, and iNOS were inducible by IFN-γ, suggesting that macrophages may be one of the cell populations involved in the upregulation of these cytokines observed in vivo during infection with Eimeria.
Related Links	http://dx.doi.org/10.1128/iai.69.4.2527-2534.2001
Ending Page	2534
Page Count	8
Starting Page	2527
File Format	PDF
ISSN	00199567
e-ISSN	10985522
Journal	Infection and Immunity
Issue Number	4
Volume Number	69
Language	English
Publisher	American Society for Microbiology
Publisher Date	2001-04-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Immunology Microbiology Parasitology Infectious Diseases Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Parasitology Immunology Microbiology

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