Changes in some pro-and anti-inflammatory cytokines produced by bovine peripheral blood mononuclear cells following foot and mouth disease vaccination
Authors
Abstract:
Interleukin (IL)-17 is exclusively produced by CD4 helper T-cells upon activation. It most often acts as a pro-inflammatory cytokine, which stimulates the release of pro-inflammatory cytokines IL-6, IL-8, TNF-α, and granulocyte-macrophage colony-stimulating factor (GM-CSF). In this study, we studied the in-vitro IL-17 response to specific antigens and a variety of mitogens and compared the IL-17 response to IL-2, IL-4, IL-5, IL-6, IL-10, and IFN-γ responses. We used a foot and mouth disease (FMD) vaccine as specific antigens and mitogens (phytohemagglutinin [PHA], pokeweed mitogen [PWM], and concanavalin A [Con A]) to stimulate peripheral blood mononuclear cells (PBMCs) of vaccinated calves. Cell culture supernatant was harvested and analyzed for cytokines, using commercially available bovine ELISA kits. The mitogens induced a significant increase in IL-17 production. IL-17 was produced at high levels in response to the T cell-stimulated mitogens, PHA, and Con A, and at low levels in response to PWM mitogens. In contrast, level of the produced IL-17 cytokines in response to the FMDV antigens was lower as compared to those produced by mitogens. The FMDV antigens and mitogens significantly increased IL-17 production. There was not a correlation between IL-17 production and type-1 cytokine, IFN-γ, and IL-2, while there was a correlation between type-2 cytokine, IL-4, and IL-5 at either cytokine level produced by PBMCs stimulated by FMDV antigens. Moreover, there was an interaction between IL-17 and IL-6, that is, as IL-6 cytokine level elevated or diminished, IL-17 cytokine level increased or decreased, as well.
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Journal title
volume 71 issue 3
pages 199- 207
publication date 2016-09-01
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