Browsing Artículos Científicos by Author "Alfaro-Alarcón, Alejandro"

Now showing items 1-10 of 10

    • Analysis of the association between density of Helicobacter spp and gastric lesions in dogs 

      Suárez-Esquivel, Marcela; Alfaro-Alarcón, Alejandro; Guzman-Verri, Caterina; BARQUERO-CALVO, ELIAS (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 ...

    • Brucella canis is an intracellular pathogen that induces a lower proinflammatory response than smooth zoonotic counterparts 

      Guzman-Verri, Caterina; Chacón-Díaz, Carlos; Altamirano-Silva, Pamela; González-Espinoza, Gabriela; Medina, María-Concepción; Alfaro-Alarcón, Alejandro; Bouza-Mora, Laura; Jiménez-Rojas, César; Wong, Melissa; BARQUERO-CALVO, ELIAS; Rojas, Norman; Moreno, Edgardo; Chaves-Olarte, Esteban (Infection and Immunity, 2015-09-29)
      Canine brucellosis caused by Brucella canis is a disease of dogs and a zoonotic risk. B. canis harbors most of the virulence determinants defined for the genus, but its pathogenic strategy remains unclear since it has not ...

    • Chromobacterium violaceum infection in a free ranging howler monkey in Costa Rica 

      Baldi, Mario; Morales, Juan Alberto; Hernandez, Giovanna; Jiménez-Soto, Mauricio; Alfaro-Alarcón, Alejandro; BARQUERO-CALVO, ELIAS (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 ...

    • Depletion of complement enhances the clearance of Brucella abortus in mice 

      González-Espinoza, Gabriela; BARQUERO-CALVO, ELIAS; Lizano-González, Esteban; Alfaro-Alarcón, Alejandro; Arias-Gómez, Berny; Chaves-Olarte, Esteban; Moreno, Edgardo; Lomonte, Bruno; Chacón-Díaz, Carlos (American Society for Microbiology, 2018-08-06)
      Brucellosis is a bacterial disease of animals and humans. Brucella abortus barely activates the innate immune system at the onset of infection, and this bacterium is resistant to the microbicidal action of complement. Since ...

    • Fatal Paratanaisia bragai (Digenea: Eucotylidae) infection in scarlet macaws (Ara macao) in Costa Rica 

      Alfaro-Alarcón, Alejandro; Morales, Juan Alberto; VENEZIANO, Vincenzo; Santoro, Mario (Acta Parasitologica, 2015-06-16)
      We report on four fatal cases of renal infection due to Paratanaisia bragai in scarlet macaws (Ara macao) from two rescue centres in Costa Rica. At necropsy, birds had severe dehydration and cachexia. Two birds had ...

    • First report of a naturally patent infection of Angiostrongylus costaricensis in a dog 

      Alfaro-Alarcón, Alejandro; VENEZIANO, Vincenzo; Galiero, Giorgio; Cerrone, Anna; Gutierrez, Natalia; Chinchilla, Adriana; Annoscia, Giada; Colella, Vito; Dantas Torres, Filipe; Otranto, Domenico; Santoro, Mario (Veterinary Parasitology, 2015-09-15)
      Angiostrongylus costaricensis is the zoonotic agent of abdominal angiostrongyliasis in several countries in North and South America. Rodents are recognized as the main definitive hosts of A. costaricensis, but other wildlife ...

    • 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 ...

    • 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 ...

    • Presence of Maedi-Visna in Costa Rican sheep flocks 

      Dolz, Gaby; Villagra-Blanco, Rodolfo; Solórzano-Morales, Antony; Alfaro-Alarcón, Alejandro; Montero-Caballero, Danilo; Romero-Zúñiga, Juan José (Small Ruminant Research, 2015-01-22)
      A total of 359 sheep serum samples from 15 farms were analyzed for the presence of antibodies against Maedi Visna Virus (MVV) by Enzyme-linked Immunosorbent Assay (ELISA). Additionally, a survey was applied to the sheep ...

    • The white-nosed coati (Nasua narica) is a naturally susceptible definitive host for the zoonotic nematode Angiostrongylus costaricensis in Costa Rica 

      Hagnauer, Isabel; Santoro, Mario; Alfaro-Alarcón, Alejandro; VENEZIANO, Vincenzo; Cerrone, Anna; Latrofa, Maria Stefania; Otranto, Domenico; Jiménez-Soto, Mauricio (Veterinary Parasitology, 2016-09-15)
      Angiostrongylus costaricensis (Strongylida, Angiostrongylidae) is a roundworm of rodents, which may cause a severe or fatal zoonosis in several countries of the Americas. A single report indicated that the white-nosed coati ...