PMID- 20655592 OWN - NLM STAT- MEDLINE DCOM- 20110926 LR - 20110222 IS - 1878-1667 (Electronic) IS - 0147-9571 (Linking) VI - 34 IP - 2 DP - 2011 Mar TI - Cytokine expression, glucocorticoid and growth hormone changes after porcine reproductive and respiratory syndrome virus (PRRSV-1) infection in vaccinated and unvaccinated naturally exposed pigs. PG - 143-55 LID - 10.1016/j.cimid.2010.06.004 [doi] AB - The objective of this paper was to study the changes of some cytokines and neuroendocrine hormones in vaccinated and unvaccinated pigs that were naturally infected by a PRRSV-1 (porcine reproductive and respiratory syndrome virus) heterologous field strain. We analyzed gene expression of pro-inflammatory (TNF-alpha, IL-1beta, MCP-1, IL-6), pro-immune (IFN-gamma) and anti-inflammatory cytokines (IL-10) in PBMC, as well as hormonal (GH and cortisol) levels in blood samples of pigs obtained in a field trial previously reported [Martelli P, Gozio S, Ferrari L, Rosina S, De Angelis E, Quintavalla C, et al. Efficacy of a modified-live porcine reproductive and respiratory syndrome virus (PRRSV) vaccine in pigs naturally exposed to a heterologous European (Italian cluster) field strain: clinical protection and cell-mediated immunity. Vaccine 2009;27:3788-99]. All vaccinated pigs showed an increase in pro-inflammatory and pro-immune cytokine gene expression with respect to controls and a prompt increase in GH that could be consistently associated with pro-inflammatory cytokines in sustaining innate immunity; moreover, the higher levels of cortisol indicates the activation of the hypothalamus-pituitary-adrenal (HPA) axis response. In contrast, unvaccinated pigs showed down-regulation of the cortisol and GH responses, and the pro-inflammatory and pro-immune cytokines remained at a basal or low level, with an increase of TNF-alpha and IL-6 in association with a higher level of IL-10 in the late phase of natural infection. The associated trends of pro-inflammatory and anti-inflammatory cytokines together with the cortisol level demonstrate that a previous vaccination promotes an early immune responsiveness in pigs and a more efficient control of inflammation in the late phase of infection with a heterologous PRRSV isolate; both events could sustain clinical protection. CI - Copyright (c) 2010 Elsevier Ltd. All rights reserved. FAU - Borghetti, Paolo AU - Borghetti P AD - Department of Animal Health, University of Parma, Italy. paolo.borghetti@unipr.it FAU - Saleri, Roberta AU - Saleri R FAU - Ferrari, Luca AU - Ferrari L FAU - Morganti, Marina AU - Morganti M FAU - De Angelis, Elena AU - De Angelis E FAU - Franceschi, Valentina AU - Franceschi V FAU - Bottarelli, Ezio AU - Bottarelli E FAU - Martelli, Paolo AU - Martelli P LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100723 PL - England TA - Comp Immunol Microbiol Infect Dis JT - Comparative immunology, microbiology and infectious diseases JID - 7808924 RN - 0 (Cytokines) RN - 0 (Glucocorticoids) RN - 9002-72-6 (Growth Hormone) SB - IM MH - Animals MH - Cytokines/blood/*immunology MH - Gene Expression Regulation/*immunology MH - Glucocorticoids/blood/*immunology MH - Growth Hormone/blood/*immunology MH - Immunity, Innate MH - Leukocytes, Mononuclear/immunology MH - Porcine Reproductive and Respiratory Syndrome/blood/*immunology MH - Porcine respiratory and reproductive syndrome virus/immunology MH - Swine MH - Vaccination EDAT- 2010/07/27 06:00 MHDA- 2011/09/29 06:00 CRDT- 2010/07/27 06:00 PHST- 2010/05/07 00:00 [received] PHST- 2010/06/20 00:00 [accepted] PHST- 2010/07/27 06:00 [entrez] PHST- 2010/07/27 06:00 [pubmed] PHST- 2011/09/29 06:00 [medline] AID - S0147-9571(10)00047-0 [pii] AID - 10.1016/j.cimid.2010.06.004 [doi] PST - ppublish SO - Comp Immunol Microbiol Infect Dis. 2011 Mar;34(2):143-55. doi: 10.1016/j.cimid.2010.06.004. Epub 2010 Jul 23.