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Publikationstyp: Zeitschriftenaufsatz
Dokumenttyp: Originalarbeit

Jahr: 2021

AutorInnen: Lagler, J; Schmidt, S; Mitra, T; Stadler, M; Patricia Wernsdorf, ; Grafl, B; Hatfaludi, T; Hess, M; Gerner, W; Liebhart, D

Titel: Comparative investigation of IFN-γ-producing T cells in chickens and turkeys following vaccination and infection with the extracellular parasite Histomonas meleagridis.

Quelle: Dev Comp Immunol. 2021; 116:103949



Autor/innen der Vetmeduni Vienna:

Gerner Wilhelm
Grafl Beatrice
Hatfaludi Tamas
Hess Michael
Lagler Julia
Liebhart Dieter
Mitra Taniya
Schmidt Selma
Stadler Maria
Wernsdorf Patricia

Beteiligte Vetmed-Organisationseinheiten
Institut für Immunologie
Universitätsklinik für Geflügel und Fische, Klinische Abteilung für Geflügelmedizin


Zugehörige(s) Projekt(e): Phenotype and cytokine production of Histomonas meleagridis-specific T cells isolated from chickens and turkeys infected with the parasite or vaccinated against histomonosis

Phenotype and cytokine production of Histomonas meleagridis-specific T cells isolated from chickens and turkeys infected with the parasite or vaccinated against histomonosis


Abstract:
The re-emerging disease histomonosis is caused by the protozoan parasite Histomonas meleagridis that affects chickens and turkeys. Previously, protection by vaccination with in vitro attenuated H. meleagridis has been demonstrated and an involvement of T cells, potentially by IFN-γ production, was hypothesized. However, comparative studies between chickens and turkeys on H. meleagridis-specific T cells were not conducted yet. This work investigated IFN-γ production within CD4+, CD8α+ and TCRγδ+ (chicken) or CD3ε+CD4-CD8α- (turkey) T cells of spleen and liver from vaccinated and/or infected birds using clonal cultures of a monoxenic H. meleagridis strain. In infected chickens, re-stimulated splenocytes showed a significant increase of IFN-γ+CD4+ T cells. Contrariwise, significant increments of IFN-γ-producing cells within all major T-cell subsets of the spleen and liver were found for vaccinated/infected turkeys. This indicates that the vaccine in turkeys causes more intense systemic immune responses whereas in chickens protection might be mainly driven by local immunity.Copyright © 2020 The Author(s). Published by Elsevier Ltd.. All rights reserved.


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