Browsing by Subject "BACTERIAS"
Now showing items 1-20 of 35
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Activation of Rho and Rab GTPases dissociates Brucella abortus internalization from intracellular trafficking
(Blackwell Science, 2002-10-04)Brucella abortus is an intracellular pathogen that relies on unconventional virulence factors to infect hosts. In non-professional phagocytes, Rho GTPasesactivation by the Escherichia coli cytotoxic necrotiz ing factor ... -
Aislamiento e identificación molecular de la bacteria Pasteuria penetrans en fincas bananeras comerciales de la región Caribe de Costa Rica, y su evaluación in vitro contra el nemátodo barrenador Radopholus similis (Thorne) y Meloidogyne Goeldi, 1892
(Universidad Nacional (Costa Rica). Escuela de Ciencias Agrarias, 2017)Determina la presencia de Pasteuria penetrans en la región Caribe de Costa Rica, por medio de técnicas moleculares y analizar de forma preliminar, su potencial como agente de combate biológico de Radopholus similis, bajo ... -
Alertan ante derretimiento de glaciales
(Escuela de Medicina Veterinaria, 2020-03)A medida que el cambio climático provocado por el ser humano derrite los glaciares en todo el mundo, podrían resurgir microorganismos desconocidos por la ciencia. Si bien el coronavirus ha puesto en alerta a la población ... -
Analysis of the association between density of Helicobacter spp and gastric lesions in dogs
(American Journal of Veterinary Research, 2017-12)OBJECTIVE To evaluate the correlation between the density of native gastric Helicobacter spp and the presence of gastric lesions in dogs. ANIMALS 80 dogs of various breeds, sexes, and ages. PROCEDURES Gastroscopic and ... -
Bacterial counts in spleen
(Bio-protocol, 2013-11-05)Bacterial loads can be determined as colony forming units (CFU) at any point of the infection by culturing spleen homogenates on agar plates. This is a reliable method for comparing the kinetics of infection in various ... -
Brucella abortus induces the premature death of human neutrophils through the action of Its lipopolysaccharide
(PLoS Pathogens, 2015-05-06)Most bacterial infections induce the activation of polymorphonuclear neutrophils (PMNs), enhance their microbicidal function, and promote the survival of these leukocytes for protracted periods of time. Brucella abortus ... -
Brucella abortus ornithine lipids are dispensable outer membrane components devoid of a marked pathogen-associated molecular pattern
(PLoS One, 2011-01-07)The brucellae are a-Proteobacteria facultative intracellular parasites that cause an important zoonosis. These bacteria escape early detection by innate immunity, an ability associated to the absence of marked pathogen-associated ... -
Brucella abortus senses the intracellular environment through the BvrR/Bvrs two-component system, which allows B. abortus to adapt to its replicative nich
(American Society for Microbiology., 2018-01-16)Brucella abortus is a facultative extracellular-intracellular pathogen belonging to a group of Alphaproteobacteria that establishes close interactions with animal cells. This bacterium enters host cells in a membrane-bound ... -
Brucella β 1,2 cyclic glucan is an activator of human and mouse dendritic cells
(PLoS Pathogens, 2012-11-15)Bacterial cyclic glucans are glucose polymers that concentrate within the periplasm of alpha-proteobacteria. These molecules are necessary to maintain the homeostasis of the cell envelope by contributing to the osmolarity ... -
Chlamydia psittaci
(Universidad Nacional, Costa Rica, 2020)El objetivo de este vídeo es presentar una breve explicación sobre la bacteria Chlamydia psittaci presente en aves, su forma de transmisión a humanos, presencia en Costa Rica, diagnóstico y las medidas de transmisión. El ... -
Chromobacterium violaceum infection in a free ranging howler monkey in Costa Rica
(Wildlife Disease Association, 2010)Chromobacterium violaceum is a gram-negative saprobe bacterium that is a rare opportunistic pathogen in mammals. There are numerous reports in humans including fatalities, but no record exists in free-ranging nonhuman ... -
Científicos estudian proceso de contagio de la Brucella
(Oficina de Comunicación, Universidad Nacional, 2020-11)Elías Barquero académico de la Escuela de Medicina Veterinaria (EMV) y Edgardo Moreno, profesor emérito de la Universidad Nacional (UNA), publicaron recientemente una investigación sobre el papel de ... -
Combined electrokinetic manipulations of pathogenic bacterial samples in low-cost fabricated dielectrophoretic devices
(AIP Advances, 2019-11-13)A low-cost fabrication method of microfluidic devices with micrometer-sized constrictions used for electrodeless dielectrophoresis (eDEP) is demonstrated here. A structure on a commercial printed circuit board (PCB) ... -
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 ... -
Determinación preliminar de los patrones de resistencia antimicrobiana de las bacterias pertenecientes al género Staphylococcus spp. causantes de pioderma en pacientes caninos atendidos en clínicas veterinarias del Área Metropolitana.
(Universidad Nacional de Costa RicaEscuela de Ciencias VeterinariasHeredia, CR. : M. Romero S.,, 2014-09-10)Identifica los agentes bacterianos pertenecientes al género Staphylococcus spp. causantes de pioderma y sus patrones de resistencia a diferentes antibióticos utilizados rutinariamente para el tratamiento de dermatopatías. ... -
Estandarización de un protocolo de caracterización molecular para la identificación de especie de cepas terrestres de bacterias del género Brucella
(Ediciones Unisalle, 2011-10-03)La brucelosis es la enfermedad zoonótica más extendida en el mundo que afecta diversos animales, incluyendo especies domésticas y de vida silvestre. Es causada por una bacteria perteneciente al género Brucella, el cual ... -
GTPases of the Rho subfamily are required for Brucella abortus internalization in nonprofessional phagocytes
(The American Society for Biochemistry and Molecular Biology, Inc., 2001-11-30)Members of the genus Brucella are intracellular -Proteobacteria responsible for brucellosis, a chronic disease of humans and animals. Little is known about Brucella virulence mechanisms, but the abilities of these ... -
Identification and antimicrobial susceptibility of obligate anaerobic bacteria from clinical samples of animal origin
(Anaerobe, 2015-09-14)The etiology of veterinary infectious diseases has been the focus of considerable research, yet relatively little is known about the causative agents of anaerobic infections. Susceptibility studies have documented the ... -
In vivo proteolytic degradation of the Escherichia coli acyltransferase HlyC
(The American Society for Biochemistry and Molecular Biology, 2001-05-18)Escherichia coli hemolysin (HlyA) is the prototype toxin of a major family of exoproteins produced by Gram-negative bacteria known as “repeats in toxins.” Only fatty acid-acylated HlyA molecules at residues Lys564 and ... -
Intracellular adaptation of Brucella abortus
(Universidad Nacional, Costa Rica, 2009-03)Macrophages were infected with virulent B. abortus strain 2308 or attenuated strain 19. Intracellular bacteria were recovered at different times after infection and their proteomes compared. The virulent strain initially ...
