Announcement

Collapse
No announcement yet.

Effects of Isatis root polysaccharide in mice infected with H3N2 swine influenza virus

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Effects of Isatis root polysaccharide in mice infected with H3N2 swine influenza virus

    Res Vet Sci. 2018 May 1;119:91-98. doi: 10.1016/j.rvsc.2018.04.012. [Epub ahead of print]
    Effects of Isatis root polysaccharide in mice infected with H3N2 swine influenza virus.

    Wang X1, Xue Y2, Li Y2, Liu F1, Yan Y2, Zhang H3, Jin Q4.
    Author information

    Abstract

    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.


    KEYWORDS:

    Isatis root polysaccharide; Mice; Swine influenza virus

    PMID: 29890386 DOI: 10.1016/j.rvsc.2018.04.012
Working...
X