Browsing by Subject "BACTERIA"
Now showing items 1-15 of 15
-
Aerobic bacterial flora of nesting green turtles (Chelonia mydas) from Tortuguero National Park, Costa Rica
(American Association of Zoo Veterinarians, 2006)Bacteriological examination of 70 nesting green turtles (Chelonia mydas) from Tortuguero National Park, Costa Rica was performed to investigate nasal and cloacal aerobic bacteria. A total of 325 bacterial isolates were ... -
Aislamiento de cepas bacterianas amonio y nitrito oxidantes a partir de suelo y su aplicación potencial en la disminución de nitrógeno en aguas residuales de tipo doméstico
(Universidad Nacional (Costa Rica), 2014)El suelo es la matriz fundamental donde suceden las reacciones químicas y biológicas que permiten el desarrollo de la vida en la tierra, y donde ocurren procesos fundamentales como la mineralización de los elementos y la ... -
Backyard Chicken Flocks Pose a Disease Risk for Neotropic Birds in Costa Rica
(American Association of Avian Pathologists, 2008)Pathogens of free-ranging chickens create a risk of disease for wild birds, some of which migrate to the United States, as well as potential economic losses for resource-poor farmers. Free-roaming backyard chickens are ... -
Biodeterioration and biodegradation of Roman monuments: A comparison of the current status of 18th century paintings by the Canalettos
(2014)Worldwide there is an urgent need to monitor the conditions of monuments affected by biodeterioration and biodegradation, but no long term data exist for most of them. Here is an exception in the case of certain Roman ... -
Brucella abortus lipopolysaccharide in murine peritoneal macrophages acts as a down-regulator of T cell activation
(The American Association of Immunologists, Inc., 2000)Macrophages play a central role in host immune responses against pathogens by acting as both professional phagocytic cells and as fully competent APCs. We report here that the LPS from the facultative intracellular ... -
Brucella abortus transits through the autophagic pathway and replicates in the endoplasmic reticulum of nonprofessional phagocytes
(American Society for Microbiology, 1988-09-01)Brucella abortus is an intracellular pathogen that replicates within a membrane-bounded compartment. In this study, we have examined the intracellular pathway of the virulent B. abortus strain 2308 (S2308) and the attenuated ... -
Characterization of culturable marine luminescent bacteria isolated from the Gulf of Nicoya, Costa Rica
(Consejo Superior de Investigaciones Científicas (España), 2017)Luminescence in bacteria is dependent on quorum sensing and is regulated by the luxCDAB operon. The expression of this operon genes can be inhibited by explosion to toxic substances such as heavy metals. The ratio between ... -
Clostridium difficile: determinación de genotipos en suinos de Costa Rica
(Universidad Nacional, Costa Rica, 2017)Clostridium difficile es un enteropatógeno con amplia distribución geográfica e importancia a nivel clínico; su virulencia y resistencia a los antimicrobianos son actual objeto de estudio a nivel internacional. En animales, ... -
Detección de la infección por Brucella ceti en cetáceos mediante PCR-Alta Resolución de Fusión: pautas para el manejo de delfines encallados
(Universidad Nacional, Costa Rica, 2020)Este trabajo describe la aplicación de la Reacción en Cadena de la Polimerasa con Alta Resolución de la Temperatura de Fusión (PCR-HRM) como herramienta de apoyo en la identificación de aislamientos de bacterias del género ... -
Determination of streptomycin and doxycycline using LC/MS towards an effective treatment against an experimental Brucella abortus infection in mice
(Elsevier B.V, 2022-02-25)Herein we described a versatile liquid chromatographic method for detection and quantification of the total levels of two antimicrobials [i.e., streptomycin (STM) and doxycycline (DOX)], in mice plasma and selected tissues, ... -
Effect of the veterinary ionophore monensin on the structure and activity of a tropical soil bacterial community
(Taylor and Francis Inc., 2019-10-07)Monensin (MON) is a coccidiostat used as a growth promoter that can reach the environment through fertilization with manure from farm animals. To verify whether field-relevant concentrations of this drug negatively ... -
Expertos alertan sobre peligrosa bacteria en aves, mamíferos y reptiles
(Oficina de Comunicación, Universidad Nacional, 2021-06)La manipulación inadecuada de las excretas, secreciones o cadáveres de aves, reptiles, anfibios y mamíferos podría pasar de una tarea cotidiana a una seria complicación de salud, tanto en animales como en personas. ... -
Francisella sp., an emerging pathogen of tilapia, Oreochromis niloticus (L.), in Costa Rica
(Blackwell, 2009)Francisella sp. is an emergent bacterial pathogen that causes acute to chronic disease in warm and cold water cultured and wild fish species. During the past 3 years, the bacterium has been detected in tilapia, Oreochromis ... -
MyD88, but not Toll-Like receptors 4 and 2, Is required for efficient clearance of Brucella abortus
(American Society for Microbiology, 2005-08)It is not clear how the host initially recognizes and responds to infection by gram-negative pathogenic Brucella spp. It was previously shown (D. S. Weiss, B. Raupach, K. Takeda, S. Akira, and A. Zychlinsky, J. Immunol. ... -
Patógenos bacterianos y su resistencia a los antimicrobianos en los cultivos de tilapia en Guatemala
(Universidad Nacional (Costa Rica), 2021-07-31)Este estudio muestra el trabajo realizado durante el año 2018-2019, donde se identificaron los principales patógenos bacterianos que afectan los cultivos de la tilapia en Guatemala, al mismo tiempo se evaluó la resistencia ...