Browsing Facultad de Ciencias de la Salud by Title
Now showing items 1356-1375 of 1442
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The current prevalence of asthma, allergic rhinitis, and eczema related symptoms in school-aged children in Costa Rica
(Taylor and Francis Ltd, 2018-04-25)Objective: Asthma prevalence in Costa Rica is among the highest worldwide. We aimed to determine the prevalence of asthma among school-age children in the Central Highland Area of Costa Rica. Methods: Cross-sectional ... -
The differential interaction of brucella and ochrobactrum with innate immunity reveals traits related to the evolution of stealthy pathogens
(PLOS ONE, 2009-06-16)Background: During evolution, innate immunity has been tuned to recognize pathogen-associated molecular patterns. However, some a-Proteobacteria are stealthy intracellular pathogens not readily detected by this system. ... -
The dynamics of latifundia formation
(PLOS ONE, 2013-12-20)Land tenure inequity is a major social problem in developing nations worldwide. In societies, where land is a commodity, inequities in land tenure are associated with gaps in income distribution, poverty and biodiversity ... -
The effect of the dam–calf relationship on serostatus to Neospora caninum on 20 Costa Rican dairy farms
(Universidad Nacional, Costa Rica, 2003-03-31)An epidemiological study was conduced on 20 dairy herds previously diagnosed as seropositive for Neospora caninum. The number of females per farm varies from 41 to 296. All females present on the farms were bled once in ... -
The genus Whiteringia: A review of its traditional uses, phytochemistry and pharmacology
(International Journal of Herbal Medicine, 2017)The genus Witheringia belongs to Solanaceae family. Some of its species are widely used in traditional medicine to cure several disorders such as diabetes, cancer, malaria, helminthic infections, inflammatory disorders, ... -
The horse as a model for translational orthopedic research: examples of studies on the regeneration of cartilage and bone conducted in Costa Rica
(Universidad Nacional, Costa Rica, 2019)The paper provides results published or to be published of long-term in vivo equine studies to evaluate techniques of possible regenerative matrices of cartilage and bone, by means of cell-free implants or ... -
The Impact of Deforestation, Urbanization, and Changing Land Use Patterns on the Ecology of Mosquito and Tick-Borne Diseases in Central America
(MDPI, 2021)Central America is a unique geographical region that connects North and South America, enclosed by the Caribbean Sea to the East, and the Pacific Ocean to the West. This region, encom- passing Belize, Costa Rica, ... -
The impact of overstocking and negative energy balance on quantitative measurement of non-typhoidal Salmonella in periparturient dairy cattle
(Frontiers in Veterinary Science, 2022-02-17)Stressful conditions in animal production facilities may exacerbate the fecal shedding and foodborne transmission of non-typhoidal Salmonella enterica subsp. enterica. Dairy cows are reservoirs of this zoonotic microorganism, ... -
The Influence of Time Spent in Outdoor Play on Daily and Aerobic Step Count in Costa Rican Children
(2011)Examina la influencia del tiempo gastado en juegos al aire libre (entre semana o fines de semana) sobre la cuenta del paso aeróbico diario en 190 niños costarricenses de quinto a¤o provenientes de tres escuelas de la ... -
The infrared thermography of the scrotal surface in the long scrotum bull. Preliminary comparisons to normal scrotum sound for breeding bulls
(Universidad Nacional, Costa Rica, 2023)Long scrotum bulls (LS) (i.e the scrotum apex surpassing the hock joint level) have been reported with a high culling rate compared to normal scrotum sires (NS) (scrotum apex above the hock joint), due to seminal and ... -
The lipopolysaccharide core of Brucella abortus acts as a shield against innate immunity recognition
(PLoS Pathogens, 2012-05-10)Innate immunity recognizes bacterial molecules bearing pathogen-associated molecular patterns to launch inflammatory responses leading to the activation of adaptive immunity. However, the lipopolysaccharide (LPS) of the ... -
The NS segment of H5N1 avian influenza viruses (AIV) enhances the virulence of an H7N1 AIV in chickens
(Veterinary Research, 2014-01-25)Some outbreaks involving highly pathogenic avian influenza viruses (HPAIV) of subtypes H5 and H7 were caused by avian-to-human transmissions. In nature, different influenza A viruses can reassort leading to new viruses ... -
The one hundred year journey of the genus Brucella (Mayer and Shaw 1920)
(Oxford University Press, 2021-01-01)The genus Brucella, described by Meyer and Shaw in 1920, comprises bacterial pathogens of veterinary and public health relevance. For 36 years, the genus came to include three species that caused brucellosis in livestock ... -
The potential use of Rattus norvegicus (Mammalia, Muridae) in experimental infections with metacercariae of Paragonimus mexicanus (Digenea, Troglotematidae)
(Universidad Nacional, Costa Rica, 2017-01-15)Seven Wistar rats (Rattus norvegicus) were experimentally infected with Paragonimus mexicanus metacercariae, obtained from organs and tissues of freshwater crabs (Brachyura: Pseudothelphusidae) collected from the Caribbean ... -
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 ...
