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Título
Haemophilus parasuis Subunit Vaccines Based on Native Proteins with Affinity to Porcine Transferrin Prevent the Expression of Proinflammatory Chemokines and Cytokines in Pigs
Autor
Facultad/Centro
Área de conocimiento
Datos de la obra
Clinical and Developmental Immunology, 2013
Editor
Hindawi Publishing Corporation
Fecha
2013-02-23
Resumo
The expression of chemokines (CCL-2 and CXCL-8) and cytokines (IL-1𝛼, IL-1𝛽, IL-6, TNF-𝛼, and IL-10) was evaluated by RTqPCR
in colostrum-deprived pigs vaccinated and challenged with Haemophilus parasuis serovar 5. Two vaccines containing native
proteins with affinity to porcine transferrin (NPAPTim and NPAPTit) were tested, along with two control groups: one inoculated
with PBS instead of antigen (challenge group (CHG)), and another one nonimmunized and noninfected (blank group). The use of
NPAPTim and NPAPTit resulted in complete protection against H. parasuis (no clinical signs and/or lesions), and both vaccines
were capable of avoiding the expression of the proinflammatory molecules to levels similar to physiological values in blank group.
However, overexpression of all proinflammatory molecules was observed in CHG group, mainly in the target infection tissues
(brain, lungs, and spleen). High expression of CCL-2, CXCL-8, IL-1𝛼, IL-1𝛽, and IL-6 can be considered one of the characteristics
of H. parasuis infection by serovar 5
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