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Título: | Alternative vaccination routes against paratuberculosis modulate local immune response and interference with tuberculosis diagnosis in laboratory animal models |
Autor: | Arrazuria, Rafael; Ladero, I.; Molina, Elena CSIC ORCID ; Fuertes Franco, Miguel CSIC ORCID; Juste, R.; Fernández Fernández, Miguel CSIC; Pérez Pérez, Valentín CSIC ORCID ; Garrido, J.; Elguezabal, Natalia | Palabras clave: | Mycobacterium avium subsp. paratuberculosis Vaccination routes Rabbit model Macrophage polarization Skin test |
Fecha de publicación: | 2020 | Citación: | Veterinary Sciences 7,7 (2020) | Resumen: | Paratuberculosis (PTB) is an enteric granulomatous disease caused by Mycobacterium avium subsp. paratuberculosis (MAP) that mainly aects ruminants. Current vaccines have shown to be cost-eective control reagents, although they are restricted due to cross-interference with bovine tuberculosis (bTB). Therefore, novel vaccination strategies are needed and this study is focused on evaluating alternative vaccination routes and their eect on the local immune response. The MAP oral challenge rabbit model was used to evaluate and compare an experimental inactivated MAP vaccine through oral (VOR) and intradermal (VID) routes. The VID group presented the highest proportion of animals with no visible lesions and the lowest proportion of animals with MAP positive tissues. Immunohistochemistry analysis revealed that the VID group presented a dominantly M1 polarized response indicating an ability to control MAP infection. In general, all vaccinated groups showed lower calprotectin levels compared to the non-vaccinated challenged group suggesting less active granulomatous lesions. The VID group showed some degree of skin test reactivity, whereas the same vaccine through oral administration was completely negative. These data show that PTB vaccination has an eect on macrophage polarization and that the route influences infection outcome and can also have an impact on bTB diagnosis. Future evaluation of new immunological products against mycobacterial diseases should consider assaying dierent vaccination routes. | Descripción: | 16 páginas, 5 figuras, 2 tablas. | Versión del editor: | http://dx.doi.org/10.3390/vetsci7010007 | URI: | http://hdl.handle.net/10261/220506 | DOI: | 10.3390/vetsci7010007 | ISSN: | 2306-7381 |
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Arrazuria R._Alternative vaccination_vetsci-07-00007.pdf | 1,46 MB | Adobe PDF | Visualizar/Abrir |
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