1
tesis de grado
Publicado 2022
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Desarrolla un protocolo que permita detectar células infectadas en 24 horas, a través de citometría de Flujo. El protocolo desarrollado, basado en la detección intracelular de proteínas virales mediante el uso del antisuero MDV, ha mostrado ser específico para células infectadas y ha sido capaz de detectar el incremento de éstas durante el periodo de cultivo. Con la finalidad de confirmar que el protocolo no esté subestimando o sobrestimando el porcentaje de células infectadas, células DF-1 fueron infectadas con un virus recombinante (rHVT) que expresaba la proteína verde fluorescente (HVT-GFP). Posteriormente evaluamos el porcentaje de células infectadas utilizando el protocolo desarrollado y paralelamente evaluamos el porcentaje detectado a través de la expresión de GFP. Mediante la correlación de Spearman observamos una alta correlación (r= 0.93; p=0.011) entre ambos ...
2
artículo
Publicado 2020
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Infectious coryza (IC), an upper respiratory tract disease affecting chickens, is caused by Avibacterium paragallinarum. The clinical manifestations of IC include nasal discharge, facial swelling, and lacrimation. This acute disease results in high morbidity and low mortality, while the course of the disease is prolonged and mortality rates are increased in cases with secondary infections. Studies regarding the immune response in infected chickens are scarce, and the local immune response is the focal point of investigation. However, a large body of work has demonstrated that severe infections can impact the systemic immune response. The objective of this study was to evaluate the systemic effects of Avibacterium paragallinarum (serovar B-1) infection on immune cells in specific pathogen-free (SPF) chickens. The current study revealed the presence of a transient circulating monocyte popu...
3
Publicado 2022
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Within the framework of the current COVID-19 pandemic, there is a race against time to find therapies for the outbreak to be controlled. Since vaccines are still tedious to develop and partially available for low-income countries, passive immunity based on egg-yolk antibodies (IgY) is presented as a suitable approach to preclude potential death of infected patients, based on its high specificity/avidity/production yield, cost-effective manufacture, and ease of administration. In the present study, IgY antibodies against a recombinant RBD protein of SARS-CoV-2 were produced in specific-pathogen-free chickens and purified from eggs using a biocompatible method. In vitro immunoreactivity was tested, finding high recognition and neutralization values. Safety was also demonstrated prior to efficacy evaluation, in which body weight, kinematics, and histopathological assessments of hamsters cha...
4
artículo
Publicado 2021
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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
