Person: Domínguez Bernal, Gustavo Ramón
Faculty / Institute
Veterinaria es calidad: Evaluación contínua y autoevaluación
2018-03-22, Olmeda García, Angeles Sonia, Lorenzo González, Pedro Luis, Fernández Álvarez, Manuela, Cambero Rodríguez, María Isabel, Domínguez Bernal, Gustavo Ramón, Sainz Rodríguez, Ángel, San Andrés Larrea, María Dolores de, Pérez Cabal, María de los Ángeles, Pérez Sen, Raquel, Barrero Rodríguez, Andrés
El documento recoge los resultados del proyecto de Innova-Gestion UCM desarrollado durante los años 2016/2017 para la evaluación por rúbrica y online, formando, aplicando y analizando sus resultados. También se exponen los datos preliminares de la opinión de docentes y alumnos sobre su satisfacción con el actual Grado en Veterinaria. Estos resultados son, además, el punto de partida, para continuar mejorando la calidad de la docencia del centro.
Transcriptomic Profile of Canine DH82 Macrophages Infected by Leishmania infantum Promastigotes with Different Virulence Behavior
2022-01-27, Mas, Alicia, Martínez Rodrigo, Abel, Carrión, Javier, Orden, José Antonio, Alzate, Juan F., Domínguez Bernal, Gustavo Ramón, Horcajo, Pilar
Zoonotic visceral leishmaniosis caused by Leishmania infantum is an endemic disease in the Mediterranean Basin affecting mainly humans and dogs, the main reservoir. The leishmaniosis outbreak declared in the Community of Madrid (Spain) led to a significant increase in human disease incidence without enhancing canine leishmaniosis prevalence, suggesting a better adaptation of the outbreak’s isolates by other host species. One of the isolates obtained in the focus, IPER/ES/2012/BOS1FL1 (BOS1FL1), has previously demonstrated a different phenotype than the reference strain MCAN/ES/1996/BCN150 (BCN150), characterized by a lower infectivity when interacting with canine macrophages. Nevertheless, not enough changes in the cell defensive response were found to support their different behavior. Thus, we decided to investigate the molecular mechanisms involved in the interaction of both parasites with DH82 canine macrophages by studying their transcriptomic profiles developed after infection using RNA sequencing. The results showed a common regulation induced by both parasites in the phosphoinositide-3-kinase–protein kinase B/Akt and NOD-like receptor signaling pathways. However, other pathways, such as phagocytosis and signal transduction, including tumor necrosis factor, mitogen-activated kinases and nuclear factor-κB, were only regulated after infection with BOS1FL1. These differences could contribute to the reduced infection ability of the outbreak isolates in canine cells. Our results open a new avenue to investigate the true role of adaptation of L. infantum isolates in their interaction with their different hosts.
Immunization with the HisAK70 DNA Vaccine Induces Resistance against Leishmania Amazonensis Infection in BALB/c Mice
2019-11-14, Martínez Rodrigo, Abel, S. Dias, Daniel, Ribeiro, Patrícia A. F., Roatt, Bruno M., Mas Zubiri, Alicia, Carrión Herrero, Francisco Javier, Coelho, Eduardo A. F., Domínguez Bernal, Gustavo Ramón
Leishmania amazonensis is the aetiological agent of a broad spectrum of leishmaniosis in South America. It can cause not only numerous cases of cutaneous leishmaniosis but also diffuse cutaneous leishmaniosis. Considering the diversity of parasite species causing different forms of the disease that coexist in the same region, it is desirable to develop a vaccine capable of eliciting cross-protection. We have previously described the use of HisAK70 DNA vaccine for immunization of mice to assess the induction of a resistant phenotype against Leishmania major and infantum infections. In this study, we extended its application in the murine model of infection by using L. amazonensis promastigotes. Our data revealed that 14 weeks post-infection, HisAK70-vaccinated mice showed key biomarkers of protection, such as higher iNOS/arginase activity, IFN-γ/IL-10, IFN-γ/IL-4, and GM-CSF/IL-10 ratios, in addition to an IgG2a-type response when compared to the control group. These findings correlated with the presentation of lower footpad swelling and parasite burdens in the immunized compared to the control mice. Overall, this study suggests that immunization with HisAK70 may be considered a suitable tool to combat leishmaniosis as it is able to induce a potent cellular immune response, which allows to control the infection caused by L. amazonensis.