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Published in: Medical Microbiology and Immunology 5-6/2018

01-11-2018 | Original Investigation

The interplay between local immune response and Epstein–Barr virus-infected tonsillar cells could lead to viral infection control

Authors: Aldana G. Vistarop, Melina Cohen, Fuad Huaman, Lucia Irazu, Marcelo Rodriguez, Elena De Matteo, María Victoria Preciado, Paola A. Chabay

Published in: Medical Microbiology and Immunology | Issue 5-6/2018

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Abstract

Epstein Barr virus (EBV) gains access to the host through tonsillar crypts. Our aim was to characterize microenvironment composition around EBV+ cells in tonsils from pediatric carriers, to disclose its role on viral pathogenesis. LMP1 expression, assessed by immunohistochemistry (IHC), was used to discriminate EBV + and – zones in 41 tonsil biopsies. Three regions were defined: Subepithelial (SE), interfollicular (IF) and germinal center (GC). CD8, GrB, CD68, IL10, Foxp3, PD1, CD56 and CD4 markers were evaluated by IHC; positive cells/100 total cells were counted. CD8+, GrB+, CD68+ and IL10+ cells were prevalent in EBV+ zones at the SE region (p < 0.0001, p = 0.03, p = 0.002 and p = 0.002 respectively, Wilcoxon test). CD4+ and CD68+ cell count were higher in EBV + GC (p = 0.01 and p = 0.0002 respectively, Wilcoxon test). Increment of CD8, GrB and CD68 at the SE region could indicate a specific response that may be due to local homing at viral entry, which could be counterbalanced by IL10, an immunosuppressive cytokine. Additionally, it could be hypothesized that CD4 augment at the GC may be involved in the EBV-induced B-cell growth control at this region, in which macrophages could also participate.
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Metadata
Title
The interplay between local immune response and Epstein–Barr virus-infected tonsillar cells could lead to viral infection control
Authors
Aldana G. Vistarop
Melina Cohen
Fuad Huaman
Lucia Irazu
Marcelo Rodriguez
Elena De Matteo
María Victoria Preciado
Paola A. Chabay
Publication date
01-11-2018
Publisher
Springer Berlin Heidelberg
Published in
Medical Microbiology and Immunology / Issue 5-6/2018
Print ISSN: 0300-8584
Electronic ISSN: 1432-1831
DOI
https://doi.org/10.1007/s00430-018-0553-2

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