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Cytokines and acute phase proteins associated with acute swine influenza infection in pigs

This study set out to investigate the cytokines and acute phase proteins (APPs) associated with the acute stages of experimentally-induced swine influenza virus (SIV) infection in 3-week-old, colostrum-deprived, caesarean-derived piglets. The piglets were inoculated intratracheally with 10(7.5) 50%...

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Autores principales: Barbé, Filip, Atanasova, Kalina, Van Reeth, Kristien
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier Ltd. 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7129392/
https://www.ncbi.nlm.nih.gov/pubmed/20097110
http://dx.doi.org/10.1016/j.tvjl.2009.12.012
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author Barbé, Filip
Atanasova, Kalina
Van Reeth, Kristien
author_facet Barbé, Filip
Atanasova, Kalina
Van Reeth, Kristien
author_sort Barbé, Filip
collection PubMed
description This study set out to investigate the cytokines and acute phase proteins (APPs) associated with the acute stages of experimentally-induced swine influenza virus (SIV) infection in 3-week-old, colostrum-deprived, caesarean-derived piglets. The piglets were inoculated intratracheally with 10(7.5) 50% egg infective dose [EID(50)] Swine/Belgium/1/98 (H1N1) SIV and were euthanased at time-points between 0 and 120 h post-inoculation (PI). Broncho-alveolar lavage fluid (BALF), lung homogenates and sera were examined for inflammatory mediators by bioassay or ELISA. Interferon (IFN)-α, interleukin (IL)-6, IL-1 and tumour necrosis factor (TNF)-α peaked in BALF 24–30 h PI, when virus titres and the severity of clinical signs were maximal. Whereas IFN-γ and IL-12, but not IL-18, increased in tandem in BALF, serum cytokine concentrations were either undetectable or were up to 100-fold lower. The APP C-reactive protein (CRP) and haptoglobin peaked 24 h later than the cytokines and reached higher levels in serum than in BALF. In contrast, lipopolysaccharide (LPS)-binding protein (LBP) only increased in BALF. Lung virus titres tightly correlated with BALF IFN-α, IL-6, IL-1, TNF-α, IFN-γ and IL-12, as well as with serum IL-6, IFN-α and IFN-γ. Signs of disease correlated with the same cytokines in BALF and serum, as well as with BALF LBP and serum CRP. The findings suggest that IFN-γ and IL-12 play a role in the pathogenesis of SIV and that APPs are induced by cytokines. This influenza infection model may have value in assessing the therapeutic potential of cytokine antagonists.
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spelling pubmed-71293922020-04-06 Cytokines and acute phase proteins associated with acute swine influenza infection in pigs Barbé, Filip Atanasova, Kalina Van Reeth, Kristien Vet J Article This study set out to investigate the cytokines and acute phase proteins (APPs) associated with the acute stages of experimentally-induced swine influenza virus (SIV) infection in 3-week-old, colostrum-deprived, caesarean-derived piglets. The piglets were inoculated intratracheally with 10(7.5) 50% egg infective dose [EID(50)] Swine/Belgium/1/98 (H1N1) SIV and were euthanased at time-points between 0 and 120 h post-inoculation (PI). Broncho-alveolar lavage fluid (BALF), lung homogenates and sera were examined for inflammatory mediators by bioassay or ELISA. Interferon (IFN)-α, interleukin (IL)-6, IL-1 and tumour necrosis factor (TNF)-α peaked in BALF 24–30 h PI, when virus titres and the severity of clinical signs were maximal. Whereas IFN-γ and IL-12, but not IL-18, increased in tandem in BALF, serum cytokine concentrations were either undetectable or were up to 100-fold lower. The APP C-reactive protein (CRP) and haptoglobin peaked 24 h later than the cytokines and reached higher levels in serum than in BALF. In contrast, lipopolysaccharide (LPS)-binding protein (LBP) only increased in BALF. Lung virus titres tightly correlated with BALF IFN-α, IL-6, IL-1, TNF-α, IFN-γ and IL-12, as well as with serum IL-6, IFN-α and IFN-γ. Signs of disease correlated with the same cytokines in BALF and serum, as well as with BALF LBP and serum CRP. The findings suggest that IFN-γ and IL-12 play a role in the pathogenesis of SIV and that APPs are induced by cytokines. This influenza infection model may have value in assessing the therapeutic potential of cytokine antagonists. Elsevier Ltd. 2011-01 2010-01-22 /pmc/articles/PMC7129392/ /pubmed/20097110 http://dx.doi.org/10.1016/j.tvjl.2009.12.012 Text en Copyright © 2009 Elsevier Ltd. All rights reserved. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
spellingShingle Article
Barbé, Filip
Atanasova, Kalina
Van Reeth, Kristien
Cytokines and acute phase proteins associated with acute swine influenza infection in pigs
title Cytokines and acute phase proteins associated with acute swine influenza infection in pigs
title_full Cytokines and acute phase proteins associated with acute swine influenza infection in pigs
title_fullStr Cytokines and acute phase proteins associated with acute swine influenza infection in pigs
title_full_unstemmed Cytokines and acute phase proteins associated with acute swine influenza infection in pigs
title_short Cytokines and acute phase proteins associated with acute swine influenza infection in pigs
title_sort cytokines and acute phase proteins associated with acute swine influenza infection in pigs
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7129392/
https://www.ncbi.nlm.nih.gov/pubmed/20097110
http://dx.doi.org/10.1016/j.tvjl.2009.12.012
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