Browsing Artículos Científicos by Title
Now showing items 561-580 of 598
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The regulon of Brucella abortus two- component system BvrR/BvrS reveals the coordination of metabolic pathways required for intracellular life
(PLOS ONE, 2022-09-21)Brucella abortus is a facultative intracellular pathogen causing a severe zoonotic disease worldwide. The two-component regulatory system (TCS) BvrR/BvrS of B. abortus is con- served in members of the Alphaproteobacteria ... -
The role of neutrophils in Brucellosis
(American Society for Microbiology, 2020-10-14)Brucellosis is a bacterial disease of domestic animals and humans. The pathogenic ability of Brucella organisms relies on their stealthy strategy and their capacity to replicate within host cells and to induce long-lasting ... -
The Struggle of Neglected Scientific Groups: Ten Years of NeTropica Efforts to Promote Research in Tropical Diseases in Central America
(PLOS ONE, 2011)The general strategy used by high-income countries to address global health challenges in low- and middle-income countries (LMICs) relies heavily on short-term strategies designed to diminish the burden of diseases afflicting ... -
The two-component system BvrR BvrS essential for Brucella abortus virulence regulates the expression of outer membrane proteins with counterparts in members of the Rhizobiaceae
(Proceedings of the National Academy of Sciences, 2002-09-17)The Brucella BvrR/BvrS two-component regulatory system is homologous to the ChvI/ChvG systems of Sinorhizobium meliloti and Agrobacterium tumefaciens necessary for endosymbiosis and pathogenicity in plants. BvrR/BvrS ... -
The two-component system BvrR/BvrS regulates the expression of the Type IV secretion system VirB in Brucella abortus
(American Society for Microbiology, 2010-11)The pathogenesis of Brucella is related to the ability to multiply intracellularly, an event controlled by the two-component system BvrR/BvrS (TCS BvrRS) and the type IV secretion machinery VirB (T4SS VirB). We have ... -
The use of a cartilage decellularized matrix scaffold for the repair of osteochondral defects: the importance of long-term studies in a large animal model
(Osteoarthritis and Cartilage, 2017-03)Objective To investigate the effect of decellularized cartilage-derived matrix (CDM) scaffolds, by itself and as a composite scaffold with a calcium phosphate (CaP) base, for the repair of osteochondral defects. It was ... -
The use of a cartilage decellularized matrix scaffold for the repair of osteochondral defects: the importance of long-term studies in a large animal model
(Osteoarthritis Research Society International. Published by Elsevier, 2016-08-21)Objective: To investigate the effect of decellularized cartilage-derived matrix (CDM) scaffolds, by itself and as a composite scaffold with a calcium phosphate (CaP) base, for the repair of osteochondral defects. It was ... -
The use of computer records: a tool to increase productivity in dairy herds
(MDPI, 2020-01-10)The level of adoption of herd management information system veterinary automated management and production control program (VAMPP) Bovine and its impact on productivity of 912 specialized dairy systems with at least 5 ... -
The use of green fluorescent protein as a marker for Brucella vaccines
(Elsevier, 2010-11-04)La brucelosis es una importante enfermedad de los animales de producción y de la fauna silvestre y una zoonosis mundial. El uso de vacunas eficaces y las correspondientes pruebas de diagnóstico que permiten diferenciar los ... -
The white-nosed coati (Nasua narica) is a naturally susceptible definitive host for the zoonotic nematode Angiostrongylus costaricensis in Costa Rica
(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 ... -
Thermographic scrotal pattern in sound for breeding zebu bulls extensively managed in tropical Costa Rica
(Animal Reproduction Science, 2016-06)Infrared thermography (IR) is relatively a novel proce- dure in animal andrology for studying bull’s scrotal thermal pattern. The accuracy of this technique lies onto camera’s performance and operator skills, and ... -
Ticks infesting humans in Central America: A review of their relevance in public health
(Elsevier, 2022)Ticks are blood-sucking arthropods that parasitize most groups of terrestrial or semiaquatic vertebrates. Humans are accidental hosts to the ticks; however, in humans the ticks can cause damages varying from simple ... -
Transient exposure to sublethal concentrations of a pesticide mixture (chlorpyrifos–difenoconazole) caused different responses in fish species from different trophic levels of the same community
(Elsevier, 2021)The assessment of early effects caused in biota by sublethal exposure to pesticide mixtures should enhance the realism in the ecological risk assessment for agricultural landscapes. This study aimed to evaluate ... -
Tratamiento de sarcoide equino: reporte de cuatro casos clínicos
(Universidad Nacional, Costa Rica, 2015-05-08)El sarcoide equino es el tumor cutáneo más frecuente en caballos, con presentaciones y localizaciones variables en la piel. Este artículo tiene como objetivo describir la presentación, el abordaje y la evolución de cuatro ... -
Trypanosoma cruzi Infection in Rhodnius pallescens (Heteroptera: Reduviidae) Infesting Coyol Palms in the Dry Arch of Panamá
(Oxford University Press on behalf of Entomological Society of America, 2018-02-07)Ecoepidemiological scenarios for Trypanosoma cruzi Chagas transmission are partially shaped by kissing bug vector ecology. The presence of Attalea butyracea Kunth, the ‘royal palm’, is a major risk factor for Chagas ... -
Two groups of cocirculating, epidemic clostridiodes difficile strains microdiversify through different mechanisms
(Oxford University Press, 2018-03-14)Clostridiodes difficile strains from the NAPCR1/ST54 and NAP1/ST01 types have caused outbreaks despite of their notable differences in genome diversity. By comparing whole genome sequences of 32 NAPCR1/ST54 isolates and ... -
Ultrasonographic measurement of the equine fetal vitreous body length for predicting days to parturition in Pura Raza Española horses
(Universidad Nacional, Costa Rica, 2019)Ultrasonographic measurement of the fetal vitreous body length to predict parturition date in horses has shown substantial differences between breeds. PRE (Pura Raza Española or Purebred Spanish ... -
Ultrasonographic screening of embryo development in cattle (Bos indicus) between days 20 and 40 of pregnancy
(Elsevier, 2005-03-09)Through a transrectal ultrasonography (Aloka SSD 500 microplus equipment, linear transducer of 7.5 MHz) a total of 267 observations were performed in a group of 50 females mainly Bos indicus, raised under humid tropical ... -
Ultrasonography as Aid for Early Pregnancy Diagnosis in Zebu Cattle in a Natural Mating Programme
(Taylor and Francis Group, 2006)To utilise ultrasonography in Zebu cattle to test early pregnancy, multiparous Bos indicus COWS (n=74) were allocated with 2 mature Brahman bulls, which were replaced with new ones every four weeks. COWS were bled for ... -
Understanding Ehrlichia canis infections in dogs of Costa Rica: hematological findings and indicative clinical signs
(Universidad Nacional, Costa Rica, 2016-11-30)Background: A cross-sectional study combining different serological and molecular techniques for the detection of Ehrlichia canis in dogs was carried out to determine hemopathological findings and suggestive clinical ...