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  1. Article ; Online: Interactions between lactobacilli and chicken macrophages induce antiviral responses against avian influenza virus.

    Shojadoost, Bahram / Kulkarni, Raveendra R / Brisbin, Jennifer T / Quinteiro-Filho, Wanderley / Alkie, Tamiru N / Sharif, Shayan

    Research in veterinary science

    2017  Volume 125, Page(s) 441–450

    Abstract: ... activity of chicken macrophages against avian influenza virus in an in vitro model using MQ-NCSU cells ... as determined by the virus titration assay. We also found that lactobacilli stimulation of macrophages induced ... antiviral functions and also can induce virus-specific adaptive immune responses. Macrophage interaction ...

    Abstract Macrophages are an important cell type of the innate immune system that upon activation, can exert antiviral functions and also can induce virus-specific adaptive immune responses. Macrophage interaction with certain probiotic bacteria such as lactobacilli can enhance antiviral functions of these cells. We have previously shown that administration of lactobacilli to chickens can effectively augment immune response to vaccine antigens. Here, we investigated the effects of representative strains of three Lactobacillus species, L. acidophilus, L. reuteri and L. salivarius used alone or in combination, in enhancing antiviral activity of chicken macrophages against avian influenza virus in an in vitro model using MQ-NCSU cells. Treatment of macrophages with probiotic lactobacilli significantly enhanced the antiviral functions, as determined by the virus titration assay. We also found that lactobacilli stimulation of macrophages induced significantly higher expression of interleukin (IL)-1β, interferon (IFN)- γ and IFN-α cytokine genes as well as interferon regulatory factor-7 (IRF7), 2',5'-oligoadenylate synthetase (OAS) and interferon-inducible transmembrane protein M3 (IFITM3) genes. Furthermore, macrophages that were treated with lactobacilli had significantly enhanced production of nitric oxide (NO) and IFN-γ protein as well as surface expression of the costimulatory molecule CD40. However, the antiviral and immunostimulatory effects of probiotic lactobacilli largely depended on the Lactobacillus species studied. Collectively, the results from our study using an in vitro model showed that certain Lactobacillus species can effectively augment antiviral responses in chicken macrophages.
    MeSH term(s) Animals ; Chickens ; Influenza A virus/immunology ; Influenza in Birds/immunology ; Lactobacillus/physiology ; Macrophages/immunology ; Macrophages/physiology ; Probiotics
    Language English
    Publishing date 2017-10-31
    Publishing country England
    Document type Journal Article
    ZDB-ID 840961-4
    ISSN 1532-2661 ; 0034-5288
    ISSN (online) 1532-2661
    ISSN 0034-5288
    DOI 10.1016/j.rvsc.2017.10.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Interactions between lactobacilli and chicken macrophages induce antiviral responses against avian influenza virus

    Shojadoost, Bahram / Alkie, Tamiru N / Brisbin, Jennifer T / Kulkarni, Raveendra R / Quinteiro-Filho, Wanderley / Sharif, Shayan

    Research in veterinary science. 2019 Aug., v. 125

    2019  

    Abstract: ... activity of chicken macrophages against avian influenza virus in an in vitro model using MQ-NCSU cells ... as determined by the virus titration assay. We also found that lactobacilli stimulation of macrophages induced ... antiviral functions and also can induce virus-specific adaptive immune responses. Macrophage interaction ...

    Abstract Macrophages are an important cell type of the innate immune system that upon activation, can exert antiviral functions and also can induce virus-specific adaptive immune responses. Macrophage interaction with certain probiotic bacteria such as lactobacilli can enhance antiviral functions of these cells. We have previously shown that administration of lactobacilli to chickens can effectively augment immune response to vaccine antigens. Here, we investigated the effects of representative strains of three Lactobacillus species, L. acidophilus, L. reuteri and L. salivarius used alone or in combination, in enhancing antiviral activity of chicken macrophages against avian influenza virus in an in vitro model using MQ-NCSU cells. Treatment of macrophages with probiotic lactobacilli significantly enhanced the antiviral functions, as determined by the virus titration assay. We also found that lactobacilli stimulation of macrophages induced significantly higher expression of interleukin (IL)-1β, interferon (IFN)- γ and IFN-α cytokine genes as well as interferon regulatory factor-7 (IRF7), 2′,5′-oligoadenylate synthetase (OAS) and interferon-inducible transmembrane protein M3 (IFITM3) genes. Furthermore, macrophages that were treated with lactobacilli had significantly enhanced production of nitric oxide (NO) and IFN-γ protein as well as surface expression of the costimulatory molecule CD40. However, the antiviral and immunostimulatory effects of probiotic lactobacilli largely depended on the Lactobacillus species studied. Collectively, the results from our study using an in vitro model showed that certain Lactobacillus species can effectively augment antiviral responses in chicken macrophages.
    Keywords adaptive immunity ; antigens ; antiviral properties ; chickens ; genes ; immune response ; immunostimulants ; Influenza A virus ; innate immunity ; interferon regulatory factor-7 ; interferon-alpha ; interferon-gamma ; interleukins ; Lactobacillus reuteri ; macrophages ; models ; nitric oxide ; probiotics ; titration ; transmembrane proteins ; vaccines ; viruses
    Language English
    Dates of publication 2019-08
    Size p. 441-450.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 840961-4
    ISSN 1532-2661 ; 0034-5288
    ISSN (online) 1532-2661
    ISSN 0034-5288
    DOI 10.1016/j.rvsc.2017.10.007
    Database NAL-Catalogue (AGRICOLA)

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