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Influenza virus represents a serious threat to public health. The lack of effective drugs against flu prompted researchers to identify more promising viral target. In this respect hemagglutinin (HA) can represent an interesting option because of its pivotal role in the infection process.With this aim we collected a small library of commercially available compounds starting from a large database and...
Control of influenza A virus (IAV) in pigs is done by vaccination of females to provide maternally-derived antibodies (MDA) through colostrum. Our aim was to evaluate if MDA interfere with IAV infection, clinical disease, and transmission in non-vaccinated piglets. In the first study, naïve sows were vaccinated with H1N2-δ1 whole inactivated virus (WIV) vaccine. In a follow-up study seropositive sows...
Many insights regarding the pathogenesis of human influenza A virus (IAV) infections have come from studies in mice and ferrets. Surfactant protein (SP)-D is the major neutralizing inhibitor of IAV in mouse airway fluids and SP-D-resistant IAV mutants show enhanced virus replication and virulence in mice. Herein, we demonstrate that sialylated glycoproteins, rather than SP-D, represent the major neutralizing...
The influenza PA-X protein is translated from the PA open reading frame from frameshifting and suppresses cellular gene expression due to its ribonuclease activity. We further defined the functional roles of PA-X by comparing PA-X proteins from two related viruses – equine influenza (EIV) and canine influenza (CIV) H3N8 – that differ in a C-terminal truncation and internal mutations. In vitro reporter...
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