Inflammatory and Cell-Mediated Immune Responses in the Respiratory Tract of Chickens to Infection with Avian Infectious Bronchitis Virus

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dc.contributor.authorOkino, Cintia Hiromi [UNESP]
dc.contributor.authorSantos, Igor Leonardo dos [UNESP]
dc.contributor.authorFernando, Filipe Santos [UNESP]
dc.contributor.authorAlessi, Antonio Carlos [UNESP]
dc.contributor.authorWang, Xiuqing
dc.contributor.authorMontassier, Helio Jose [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionS Dakota State Univ
dc.date.accessioned2015-03-18T15:54:42Z
dc.date.available2015-03-18T15:54:42Z
dc.date.issued2014-10-01
dc.description.abstractTracheal mucosa is the primary site of replication of avian infectious bronchitis virus (IBV), which leads to both morphologic and immune modulatory changes in this organ. To increase the understanding of the mechanisms involved in these processes, we focused on the evaluation of local inflammatory and cell-mediated immune responses after challenge with the M41 strain of IBV, associating these responses with pathologic changes in the tracheal mucosa. At 24 h post-infection, inflammatory cytokines related genes were significantly upregulated, including peaks of TNFSF15 and TGF beta mRNA production, although no tracheal microscopic alterations were observed and only a slightly increase in viral load occurred. At 3 days post-infection (dpi), we observed that the highest upregulation of IL6, IL1 beta, and IFN gamma coincided with highest scores of viral load and microscopic lesions, suggesting a role of both these cytokines and virus load on the development of tracheal lesions. Later, at 7 dpi, the most prominent increases of CD8 alpha alpha mRNA and Granzyme homolog A mRNA were followed by a significant decrease of scores of tracheal lesions and viral load. In conclusion, an early upregulation of expression of proinflammatory cytokines such as IL6, IL1 beta, and IFN gamma induced by the M41 strain of IBV may be partially implicated in the viral pathogenicity on trachea tissues of nonimmune challenged chickens, in addition to a late induction of a putative protective immune responses by this virus through upregulation of CD8 alpha alpha and Granzyme homolog A genes in this organ.en
dc.description.affiliationUniv Estadual Paulista UNESP, Lab Immunol & Virol, Dept Vet Pathol, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationEmbrapa Swine & Poultry, Concordia, Brazil
dc.description.affiliationS Dakota State Univ, Dept Biol & Microbiol, Brookings, SD 57007 USA
dc.description.affiliationUnespUniv Estadual Paulista UNESP, Lab Immunol & Virol, Dept Vet Pathol, BR-14884900 Jaboticabal, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 07/55070-2
dc.description.sponsorshipIdCNPq: 476120/2007-1
dc.format.extent383-391
dc.identifierhttp://dx.doi.org/10.1089/vim.2014.0054
dc.identifier.citationViral Immunology. New Rochelle: Mary Ann Liebert, Inc, v. 27, n. 8, p. 383-391, 2014.
dc.identifier.doi10.1089/vim.2014.0054
dc.identifier.issn0882-8245
dc.identifier.urihttp://hdl.handle.net/11449/116997
dc.identifier.wosWOS:000342507800004
dc.language.isoeng
dc.publisherMary Ann Liebert, Inc
dc.relation.ispartofViral Immunology
dc.relation.ispartofjcr1.531
dc.relation.ispartofsjr0,677
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleInflammatory and Cell-Mediated Immune Responses in the Respiratory Tract of Chickens to Infection with Avian Infectious Bronchitis Virusen
dc.typeArtigo
dcterms.rightsHolderMary Ann Liebert, Inc
unesp.author.orcid0000-0002-3692-3902[1]
unesp.author.orcid0000-0003-3022-9810[6]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt

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