Inhibitory effects of recombinant porcine interferon-alpha on high- and low-virulence porcine reproductive and respiratory syndrome viruses

文献类型: 外文期刊

第一作者: Dong, Shijuan

作者: Dong, Shijuan;Shen, Shiyuan;Zhang, Wanhua;Zhu, Yumin;Yu, Ruisong;Li, Zhen;Dong, Shijuan;Shen, Shiyuan;Zhu, Yumin;Yu, Ruisong;Li, Zhen;Yin, Yanbo;Guo, Yanyan;Gao, Minjie;Shi, Zhongping

作者机构:

关键词: Interferon-alpha;Porcine respiratory and reproduction syndrome;Virus;Challenge;Lymphocyte;Immunology

期刊名称:RESEARCH IN VETERINARY SCIENCE ( 影响因子:2.534; 五年影响因子:2.382 )

ISSN: 0034-5288

年卷期: 2012 年 93 卷 2 期

页码:

收录情况: SCI

摘要: The inhibitory effects of recombinant porcine interferon alpha (rPolFN-alpha) on the propagation of low-virulence PRRSV (IvPRRSV) in MARC-145 cells, and on the progress and severity of high virulence PRRSV (hvPRRSV)-induced infections in pigs, were determined. Pre-treatment of MARC-145 cells with increasing concentrations of rPolFN-alpha prior to infection with IvPRRSV decreased the observed cytopathic effects (CPEs) in a concentration-dependent manner. Viral propagation and antibody response were temporarily delayed in swine treated with rPolFN-alpha either at the same time as the hvPRRSV challenge was administered or post-challenge. Exposure of challenged animals to rPolFN-alpha after the onset of disease symptoms alleviated associated hyperthermia. Variations in lymphocyte subsets indicated that rPolFN-alpha treatment might alleviate damage to the immune system or enhance propagation of host cytotoxic T-lymphocytes when the treatment was applied simultaneously with the virus or 1 dpc, respectively. (C) 2011 Elsevier Ltd. All rights reserved.

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