Abstract
The immunomodulatory and antiviral effects of an extracellular polysaccharide (EPS-2), produced by a strain of Geobacillus thermodenitrificans isolated from a shallow marine vent of Vulcano Island (Italy), were evaluated. In the present study, we show for the first time that EPS-2 treatment hinder HSV-2 replication in human peripheral blood mononuclear cells (PBMC) but not in WISH cells. In fact, high levels of IFN-α, IL-12, IFN-γ, TNF-α, IL-18 were detected in supernatants of EPS-2 treated PBMC. Moreover, this effect was dose-dependent. Taken together, our results confirm that the immunological disorders determined by HSV-2 could be partially restored by treatment with EPS-2.
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