Browsing by Subject "ESCHERICHIA COLI"
Now showing items 1-13 of 13
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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 ... -
Análisis de los perfiles de sensibilidad a los antibióticos en aislamientos de Escherichia coli, obtenidas a partir de cloacas de cocodrilo americano (Crocodylus acutus) de animales capturados en estanques de producción de tilapia en Cañas, Guanacaste, Costa Rica
(Universidad Nacional, Costa Rica, 2024)El objetivo de la investigación es analizar los perfiles de sensibilidad a los antibióticos en aislamientos de Escherichia coli obtenidos de la cloaca del cocodrilo americano, para identificar el grado de resistencia a los ... -
Análisis del perfil de sensibilidad a los antibióticos en aislamientos de Escherichia coli obtenidos a partir de heces de Tapirus bairdii de vida libre, y su relación con la actividad antropogénica, en zonas altas de la Cordillera de Talamanca, Costa Rica
(Universidad Nacional, Costa Rica, 2018)La resistencia a los antibióticos es un problema global emergente, que actualmente está tomando importancia a nivel de salud humana y animal, relacionado con la agricultura, acuacultura e industria farmacéutica. Uno de ... -
Estudio del efecto toxicológico de nanopartículas de plata anisotrópicas en Escherichia coli y Staphylococcus aureus
(Universidad Nacional (Costa Rica), 2020)Las nanopartículas de plata (AgNPs) son ampliamente utilizadas en la formulación de productos diversos. Este tipo de materiales constituye un agente complejo y relativamente nuevo, del cual sus propiedades toxicológicas ... -
Evaluation of Escherichia coli concentrations in Crassostrea gigas and seawater in two oyster growing areas in the Gulf of Nicoya, Costa Rica
(Universidad Nacional (Costa Rica), 2014-12)Costa Rica does not have references on the health quality of Crassostrea gigas growing areas, which can pose a po tential public health risk. This study evaluated the temporal trends of Escherichia coli concentrations in ... -
First report of a Multidrug-Resistant ST58 Escherichia coli Harboring Extended-Spectrum Beta-Lactamase of the CTX-M-1 Class in a Fecal Sample of a Captive Baird’s Tapir (Tapirus bairdii) in Costa Rica, Central America
(Mary Ann Liebert, 2022-01)Objective: This study’s main objective was to analyze the antibiotic susceptibility profile of Escherichia coli isolates obtained from a fecal sample of a captive Baird’s tapir (Tapirus bairdii) in Costa Rica. Materials ... -
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 ... -
Heces de primates podrían transmitir enfermedades a personas
(Oficina de Comunicación, Universidad Nacional, 2021-05)Lohendy Muñoz Vargas y Ernesto Rojas, expertos en salud pública de la Escuela de Medicina Veterinaria de la Universidad Nacional (UNA), realizan una investigación en distintas regiones del país, con el propósito de ... -
Identificación de los perfiles de susceptibilidad a antimicrobianos y genes blaCMY-2 y blaCTX-M en aislamientos de Escherichia coli recuperados de porcinos a nivel de planta de cosecha en Costa Rica
(Universidad Nacional, Costa Rica, 2023)La resistencia a los antimicrobianos (RAM) es un creciente problema que perjudica la salud humana, animal y ambiental globalmente. Este estudio buscó conocer la situación de la resistencia en la cadena de producción porcina ... -
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 ... -
Multidrug-Resistant CTX-M and CMY-2 producing Escherichia coli Isolated from healthy household dogs from the great metropolitan area, Costa Rica
(Mary Ann Liebert, Inc., 2020)Objective:This study aimed to determine the prevalence of fecal carriage of antibiotic-resistantEscherichia coliof healthy household dogs with an emphasis on extended-spectrumb-lactamases (ESBL), AmpC-typeb-lactamases ... -
Pansusceptible Escherichia Coli isolates obtained from faeces of free-ranging baird's tapirs (Tapirus Bairdii) suggests a low selective pressure for resistance determinants in the Northwestern Region of the Talamanca Mountain Range, Costa Rica
(Elsevier, 2018-09-27)Objectives The main objective of this study was to analyse the antimicrobial susceptibility profile of Escherichia coli isolates obtained from faecal samples of free-ranging Baird’s tapirs (Tapirus bairdii) in the ... -
Zoonotic Agents in Feral Pigeons (Columba livia) from Costa Rica: Possible Improvements to Diminish Contagion Risks
(Mary Ann Liebert, 2018-01)Most studies on zoonotic agents in pigeons have been conducted in the Palearctic region, but the scarcity of data is notorious in the Neotropical region, where these birds can breed all year around and are in close contact ...