文献类型： 外文期刊
作者： Wang, Xuebing 1 ; Xue, Yang 1 ; Li, Yongliang 1 ; Liu, Fang 1 ; Yan, Yanhua 1 ; Zhang, Hongying 1 ; Jin, Qianyue 3 ;
作者机构： 1.Henan Agr Univ, Coll Anim Sci & Vet Med, Zhengzhou 450000, Henan, Peoples R China
2.Key Lab Anim Derived Food Safety Henan Prov, Zhengzhou 450000, Henan, Peoples R China
3.Henan Acad Agr Sci, Henan Prov Key Lab Anim Immunol, Zhengzhou 450002, Henan, Peoples R China
关键词： Isatis root polysaccharide; Mice; Swine influenza virus
期刊名称：RESEARCH IN VETERINARY SCIENCE （ 2020影响因子：2.534； 五年影响因子：2.382 ）
ISSN： 0034-5288
年卷期： 2018 年 119 卷
收录情况： SCI
摘要： Isatis root polysaccharide (IRPS) has gained attention in the field of virology. However, very few studies have evaluated the effects of IRPS on H3N2 swine influenza virus (SIV). The antiviral activities of IRPS against SIV were investigated in vitro through three different modes and in vivo in an experimental mouse model of SIV infection. Mice were treated by oral gavage with various doses of IRPS before being experimentally infected with SIV A/swine/Henan/2010(H3N2). The antiviral effects of IRPS were evaluated by clinical signs, weight, histopathology, cytokine levels in lung homogenates and serum nitric oxide (NO) and IgG levels at 2,5 and 9 d post-infection. IRPS demonstrated an inhibitory effect on SIV in Madin-Darby canine kidney cells. Additionally, IRPS significantly improved symptoms, reduced pathological changes and enhanced serum levels of NO and IgG in SIV-infected mice. Furthermore, detection of cytokines in lung homogenates showed IRPS could alter cytokine production to improve immune responses and systemic ability to repair inflammation. Moreover, IRPS extenuated the pulmonary inflammatory response. The results show that various concentrations of IRPS exert antiviral effects in vitro and in vivo. In an experimental mouse model of SIV infection, IRPS at a dose of 75 mg/kg was effective.
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