PMID- 24308664 OWN - NLM STAT- MEDLINE DCOM- 20160427 LR - 20181202 IS - 1865-1682 (Electronic) IS - 1865-1674 (Linking) VI - 62 IP - 5 DP - 2015 Oct TI - Comparative Analysis of Immune Responses in Pigs to High and Low Pathogenic Porcine Reproductive and Respiratory Syndrome Viruses Isolated in China. PG - e1-e10 LID - 10.1111/tbed.12190 [doi] AB - The CH-1a and HuN4 strains of porcine reproductive and respiratory syndrome virus (PRRSV) show different pathogenicities in pigs. To understand host immune responses against these viruses, we investigated the dynamic changes in cytokine levels produced in peripheral blood of piglets infected with the highly pathogenic PRRSV HuN4 strain or the CH-1a strain. Clinical signs, virus loads and serum cytokine levels [interferon(IFN)-alpha, Interleukin (IL)-1, TNF-alpha, IL-6, IL-12, IFN-gamma, IL-10 and TGF-beta] were tested. The results showed that while piglets developed effective cellular immune responses against CH-1a infection, those infected with HuN4 displayed ineffective cellular immunity, organ lesions and persistent elevated levels of immunoregulatory cytokines (IL-10 and TGF-beta), which delayed the development of PRRSV-specific immune responses. These results demonstrated that HuN4 infection induced higher cytokine levels than that of CH-1a infection induced. The changes in inflammatory cytokines intensified the inflammatory reaction and damaged the tissues and organs. CI - (c) 2013 Blackwell Verlag GmbH. FAU - Han, Z AU - Han Z AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. AD - College of Veterinary Medicine, Northeast Agricultural University, Harbin, China. FAU - Liu, Y AU - Liu Y AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Wang, G AU - Wang G AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. FAU - He, Y AU - He Y AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Hu, S AU - Hu S AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Li, Y AU - Li Y AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Shi, W AU - Shi W AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Wu, J AU - Wu J AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Wang, S AU - Wang S AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Liu, H AU - Liu H AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. FAU - Cai, X AU - Cai X AD - State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute of Chinese Academy of Agricultural Sciences, Harbin, China. LA - eng SI - GENBANK/EF635006 SI - GENBANK/EU807840 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131206 PL - Germany TA - Transbound Emerg Dis JT - Transboundary and emerging diseases JID - 101319538 RN - 0 (Cytokines) SB - IM MH - Animals MH - China MH - Cytokines/*blood MH - Immunity, Cellular/immunology MH - Molecular Sequence Data MH - Porcine Reproductive and Respiratory Syndrome/*immunology MH - Porcine respiratory and reproductive syndrome virus/*immunology MH - Swine MH - Viral Load OTO - NOTNLM OT - cytokines OT - highly pathogenic porcine reproductive and respiratory syndrome virus OT - immunity modulation OT - porcine reproductive and respiratory syndrome virus EDAT- 2013/12/07 06:00 MHDA- 2016/04/28 06:00 CRDT- 2013/12/07 06:00 PHST- 2013/06/26 00:00 [received] PHST- 2013/12/07 06:00 [entrez] PHST- 2013/12/07 06:00 [pubmed] PHST- 2016/04/28 06:00 [medline] AID - 10.1111/tbed.12190 [doi] PST - ppublish SO - Transbound Emerg Dis. 2015 Oct;62(5):e1-e10. doi: 10.1111/tbed.12190. Epub 2013 Dec 6.