Browsing Escuela de Medicina Veterinaria by Subject "BACTERIAS"

Now showing items 41-60 of 78

    • Hallazgos anatomopatológicos en virtopsia, necropsia, bacteriología e histopatología del sistema nervioso central de cetáceos encallados en las playas de Costa Rica durante el periodo 2017-2021 

      Granados Zapata, Efraín Andrés (Universidad Nacional, Costa Rica, 2021-10-08)
      La fauna de cetáceos en Costa Rica incluye una estimación de 30 especies, esta biodiversidad representa el 33% de las especies de cetáceos del mundo y, por lo tanto, anualmente se reportan encallamientos de cetáceos a ...

    • Hallazgos post-mortem y caracterización bacteriana de salmonelosis septicémica equina: Descripción de un caso. 

      Segura, Enid; Rojas Sánchez, Ernesto; Murillo, Carla; Razquín, Patricio; Alfaro-Alarcón, Alejandro; MUNOZ VARGAS, LOHENDY; BARQUERO-CALVO, ELIAS (Universidad Nacional, Costa Rica, 2022-07)
      Se describe el primer caso, debidamente confirmado, de salmonelosis en un equino en Costa Rica; una potra iberoamericana de siete meses de edad con un cuadro de diarrea de unas cuatro semanas de transcurso y baja ...

    • Identification and antimicrobial susceptibility of obligate anaerobic bacteria from clinical samples of animal origin 

      BARQUERO-CALVO, ELIAS; Mayorga, Melissa; Rodríguez-Cavallini, Evelyn; López-Ureña, Diana; Quesada-Gómez, Carlos (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 ...

    • If You're Not Confused, You're Not Paying Attention: Ochrobactrum Is Not Brucella 

      Moreno, Edgardo; Middlebrook, Earl A.; Altamirano-Silva, Pamela; Al Dahouk, Sascha; Araj, George F.; Arce-Gorvel, Vilma; Arenas-Gamboa, Ángela; Ariza, Javier; BARQUERO-CALVO, ELIAS; Battelli, Giorgio; Bertu, Wilson J.; Blasco, José María; Bosilkovsk, Mile; Cadmus, Simeon; Caswell, Clayton C.; Celli, Jean; Chacón-Díaz, Carlos; Chaves-Olarte, Esteban; Comerci, Diego J.; Conde-Álvarez, Raquel; Cook, Elizabeth; Cravero, Silvio; Dadar, Maryam; De Boelle, Xavier; De Massis, Fabrizio; Díaz, Ramón; Escobar, Gabriela I.; Fernández-Lago, Luis; Ficht, Thomas A.; Foster, Jeffrey T.; Garin-Bastuji, Bruno; Godfroid, Jacques; Gorvel, Jean-Pierre; Güler, Leyla; Erdenlig-Gürbilek, Sevil; Gusi, Amayel M.; Guzman-Verri, Caterina; Hai, Jiang; Hernández-Mora, Gabriela; Iriarte, Maite; Jacob, Nestor R.; Keriel, Anne; Khames, Maamar; Köhler, Stephan; Letesson, Jean-Jacques; Loperena-Barber, Maite; López-Goñi, Ignacio; McGiven, John; Melzer, Falk; Mora-Cartin, Ricardo; Moran-Gilad, Jacob; Muñoz, Pilar M.; Neubauer, Heinrich; O'Callaghan, David; Ocholi, Reuben; Oñate, Ángel; Pandey, Piyush; Pappas, Georgios; Pembroke, J. Tony; Roop, Martin; Ruiz-Villalobos, Nazareth; Ryan, Michael P.; Salvador-Bescós, Miriam; Sangari, Félix J.; de Lima Santos, Renato; Seimenis, Aristarchos; Splitter, Gary; Suárez-Esquivel, Marcela; Tabbaa, Darem; Trangoni, Marcos David; Tsolis, Renee M.; Vizcaíno, Nieves; Wareth, Gamal; . Welburn, Susan C; Whatmore, Adrian; Zúñiga-Ripa, Amaia; Moriyónq, Ignacio (American Society for Microbiology, 2023-07-03)
      Bacteria of the genus Brucella are facultative intracellular parasites that cause brucellosis, a severe animal and human disease. Recently, a group of taxonomists merged the brucellae with the primarily free-living, ...

    • In search of a bacterial spedes definition 

      Moreno, Edgardo (Universidad de Costa Rica., 1997)
      The bacterial species concept was examined within the framework of plant and animal associated a-2 proteobacteria, taking into consideration the phylogenetic, taxonomic and biological approaches as well as the microbiologists' ...

    • In vivo animal models confrm an increased virulence potential and pathogenicity of the NAP1/RT027/ST01 genotype within the Clostridium difcile MLST Clade 2 

      Orozco-Aguilar, Josue; Acuña-Amador, Luis; Rodríguez, César; Quesada-Gómez, Carlos; Alfaro-Alarcon, Alejandro; Chaves Olarte, Esteban (BioMed Central, 2020-09-22)
      Background: Based on MLST analyses the global population of C. difcile is distributed in eight clades, of which Clade 2 includes the “hypervirulent” NAP1/RT027/ST01 strain along with various unexplored sequence types ...

    • In vivo proteolytic degradation of the Escherichia coli acyltransferase HlyC 

      Guzman-Verri, Caterina; Chaves-Olarte, Esteban; García, Fernando; Arvidson, Staffan; Moreno, Edgardo (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 

      Lamontagne, Julie; Forest, Anik; Marazzo, Elena; François, Denis; Butler, Heather; Michaud, Jean-François; Boucher, Lyne; Pedro, Ida; Villeneuve, Annie; Sitnikov, Dmitri; Trudel, Sylvie; Nassif, Najib; Boudjelt, Djamila; Tomaki, Fadi; Chaves-Olarte, Esteban; Guzman-Verri, Caterina; Brunet, Sylvain; Côté-Martin, Alexandra; Hunter, Joanna; Moreno, Edgardo; Paramithiotis, Eustache (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 ...

    • Isolation and identification of Arcobacter species from Costa Rican poultry production and retail sources 

      Zumbado, Leana; Barboza, Karol; Angulo, Irina; Redondo-Solano, Mauricio; Castro, Eduardo; Arias, María Laura (Journal of food protection, 2017-04-03)
      Arcobacter is a gram-negative rod recognized as a potential food- and waterborne pathogen; nevertheless, little is known about the effects of this pathogen on human and animal health. Although Arcobacter species are commonly ...

    • Molecular characterization of Salmonella Paratyphi B dT+ and Salmonella Heidelberg from poultry and retail chicken meat in Colombia by Pulsed-Field gel electrophoresis 

      Donado-Godoy, Pilar; Byrne, Barbara; HUME, MICHAEL; León, Maribel; PÉREZ-GUTIERREZ, ENRIQUE; Vives, Martha; Clavijo, Viviana; Holguin Moreno, Angela Victoria; ROMERO-ZUÑIGA, JUAN JOSÉ; Castellanos, Ricardo; TAFUR, MCALLISTER; SMITH, WOUTRINA A (International Association for Food Protection, 2015)
      Salmonella Paratyphi B dTz variant (also termed Salmonella Java) and Salmonella Heidelberg are pathogens of public health importance that are frequently isolated from poultry. As a step toward implementing the Colombian ...

    • MyD88, but not Toll-Like receptors 4 and 2, Is required for efficient clearance of Brucella abortus 

      Weiss, David S.; Takeda, Kiyoshi; Akira, Shizuo; Zychlinsky, Arturo; Moreno, Edgardo (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. ...

    • Neutrophils as Trojan Horse vehicles for Brucella abortus macrophage infection 

      Gutiérrez-Jiménez, Cristina; Mora-Cartín, Ricardo; Altamirano-Silva, Pamela; Chacón-Díaz, Carlos; Chaves-Olarte, Esteban; Moreno, Edgardo; BARQUERO-CALVO, ELIAS (Universidad Nacional, Costa Rica, 2019-05-07)
      Brucella abortus is a stealthy intracellular bacterial pathogen of animals and humans. This bacterium promotes the premature cell death of neutrophils (PMN) and resists the killing action of these leukocytes. B. abortus-infected ...

    • Neutrophils dampen adaptive immunity in Brucellosis 

      Mora-Cartín, Ricardo; Gutiérrez-Jiménez, Cristina; Alfaro-Alarcón, Alejandro; Chaves-Olarte, Esteban; Chacón-Díaz, Carlos; BARQUERO-CALVO, ELIAS; Moreno, Edgardo (American Society For Microbiology, 2019-04-23)
      Brucella organisms are intracellular stealth pathogens of animals and humans. The bacteria overcome the assault of innate immunity at early stages of an infection. Removal of polymorphonuclear neutrophils (PMNs) at the ...

    • Neutrophils exert a suppressive effect on Th1 responses to intracellular pathogen Brucella abortus 

      BARQUERO-CALVO, ELIAS; Martirosyan, Anna; Ordoñez-Rueda, Diana; Arce-Gorvel, Vilma; Alfaro-Alarcón, Alejandro; Lepidi, Hubert; Malissen, Bernard; Malissen, Marie; Gorvel, Jean-Pierre; Moreno, Edgardo (PLoS Pathogens, 2013-02-14)
      Polymorphonuclear neutrophils (PMNs) are the first line of defense against microbial pathogens. In addition to their role in innate immunity, PMNs may also regulate events related to adaptive immunity. To investigate the ...

    • New insights into Neutrophil Extracellular Trap (NETs) formation from porcine neutrophils in response to bacterial infections 

      Bonilla, Marta C.; Quiros, Oriana N.; Wendt, Michael; Hennig-Pauka, Isabel; Mörgelin, Matthias; von Köckritz-Blickwede, Maren; de Buhr, Nicole (MDPI, 2022-08-11)
      Actinobacillus pleuropneumoniae (A.pp, Gram negative) and Streptococcus (S.) suis (Gram positive) can cause severe diseases in pigs. During infection, neutrophils infiltrate to counteract these pathogens with phagocytosis ...

    • Novel genotype of Ehrlichia canis detected in samples of human blood bank donors in Costa Rica 

      Dolz, Gaby; Bouza-Mora, Laura; Solórzano-Morales, Antony; Romero-Zúñiga, Juan José; Salazar Sanchez, Lizbeth; Labruna, Marcelo Bahia; Aguiar, Daniel M. (Ticks and Tick- borne Diseases, 2017-09-23)
      This study focuses on the detection and identification of DNA and antibodies to Ehrlichia spp. in samples of blood bank donors in Costa Rica using molecular and serological techniques. Presence of Ehrlichia canis was ...

    • Paratuberculosis 

      Dolz, Gaby (Camara Nacional de Productores de Leche, 2016-09-29)
      La paratuberculosis o enfermedad de Johne es una enfermedad incurable de los rumiantes, ocasionada por una bacteria denominada Mycobacterium aviun subespecie paratuberculosis o MAP. Esta bacteria ocasiona una enteritis ...

    • Pasantía en la Unidad de Microbiología Médico Veterinaria del Laboratorio Nacional de Servicios Veterinarios del SENASA 

      Villalobos Solís, María José (Universidad Nacional, Costa Rica, 2023)
      El presente trabajo de pasantía se realizó durante los meses de enero a marzo del 2023, en la Unidad de Microbiología Médico Veterinaria (MMV) del LANASEVE en el Campus Benjamín Núñez, Lagunilla, Ulloa, Heredia, para ...

    • Pathogenicity and its implications in Taxonomy: The Brucella and Ochrobactrum Case 

      Moreno, Edgardo; Blasco, José María; Letesson, Jean Jacques; Gorvel, Jean Pierre; Moriyón, Ignacio (MDPI, 2022)
      The intracellular pathogens of the genus Brucella are phylogenetically close to Ochrobac- trum, a diverse group of free-living bacteria with a few species occasionally infecting medically compromised patients. A group ...

    • Persistence of Brucella abortus in the bone marrow of infected mice 

      Gutiérrez-Jiménez, Cristina; HYSENAJ, LISIENA; Alfaro-Alarcón, Alejandro; Mora-Cartín, Ricardo; Gorvel, Jean-Pierre; Arce-Gorvel, Vilma; Moreno, Edgardo; BARQUERO-CALVO, ELIAS (Journal of Immunology Research, 2018-12-03)
      Brucellosis is a zoonotic bacterial infection that may persist for long periods causing relapses in antibiotic-treated patients. The ability of Brucella to develop chronic infections is linked to their capacity to invade ...