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  • Title: Exposure of Piglets to Enteroviruses Investigated by an Immunoassay Based on the EV-G1 VP4 Peptide.
    Author: Benkahla MA, Sane F, Desailloud R, Hober D.
    Journal: Intervirology; 2016; 59(2):69-73. PubMed ID: 27694750.
    Abstract:
    OBJECTIVE: The aim of this study was to investigate the exposure of piglets to enteroviruses-G (EV-G) through the presence of antibodies in their serum. METHODS: Serum samples were obtained from the vena cava of 10 piglets at 9 weeks of age and again 39 days later (day 39). They were tested using an immunoassay based on the EV-G1 VP4 peptide, since VP4 is highly conserved among the four Enterovirus capsid proteins, and by using a seroneutralization assay. RESULTS: For each serum collected on day 39 the optical density was high compared to the value obtained in serum collected earlier (p = 0.002). However, the titers of anti-EV-G1 serum neutralizing activity were not different in paired samples (p > 0.999). The sequence alignment of the EV-G1 VP4 peptide, encompassing 50 amino acids, used in the immunoassay showed 88% homology with EV-G, suggesting that antibodies directed toward other EV-G than EV-G1 may be detected. CONCLUSION: An immunoassay based on EV-G1 VP4 can detect an increased level of EV-G antibodies in piglet serum samples. Further studies are needed to determine whether this immunoassay may be useful for diagnosis and/or epidemiological studies and to monitor EV-G infection in pigs to evaluate strategies aimed to prevent enterovirus infections.
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