Browsing Escuela de Medicina Veterinaria by Title
Now showing items 716-735 of 1086
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Nestedness patterns of sand fly (Diptera: Psychodidae) species in a neotropical semi-arid environment
(Elsevier, 2016)A common pattern in neotropical Leishmania spp. transmission is the co-occurrence of several sand fly (SF) species at endemic foci. We collected 13 SF spp. by direct aspiration in natural resting places (NRP) and 10 SF ... -
Neurobrucellosis in stranded dolphins, Costa Rica
(Universidad Nacional, Costa Rica, 2008-09)Ten striped dolphins, Stenella coeruleoalba, stranded along the Costa Rican Pacifi c coast, had meningoencephalitis and antibodies against Brucella spp. Brucella ceti was isolated from cerebrospinal fl uid of 6 dolphins ... -
Neuroinvasion of the highly pathogenic influenza virus H7N1 is caused by disruption of the blood brain barrier in an avian model
(PLOS ONE, 2014-12-15)Influenza A virus (IAV) causes central nervous system (CNS) lesions in avian and mammalian species, including humans. However, the mechanism used by IAV to invade the brain has not been determined. In the current work, we ... -
Neutralizing antibodies against vesicular stomatitis viruses (serotypes New Jersey and Indiana) in horses in Costa Rica
(AAVLD, 2002-09-01)Serum samples were collected from domestic horses in 4 different regions of Costa Rica to detect antibodies against vesicular stomatitis viruses, serotypes New Jersey (VSV-NJ) and Indiana (VSV-IN). A total of 214 samples ... -
Neutrophils as Trojan Horse vehicles for Brucella abortus macrophage infection
(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
(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
(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 and common haplotypes shape genetic diversity in Asian tiger mosquito populations from Costa Rica and Panama
(Oxford University Press, 2015)The Asian tiger mosquito, Aedes albopictus (Skuse) (Diptera: Culicidae), is a vector of sev eral human pathogens. Ae. albopictus is also an invasive species that, over recent years, has expanded its range out of its native ... -
New Bruce-ladder multiplex PCR assay for the biovar typing of Brucella suis and the discrimination of Brucella suis and Brucella canis
(Veterinary Microbiology, 2011-06-11)Rapid and specific identification of Brucella suis at the biovar level is necessary because some of the biovars that infect animals are pathogenic for humans. None of the molecular typing methods described so far are ... -
New insights into Neutrophil Extracellular Trap (NETs) formation from porcine neutrophils in response to bacterial infections
(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 ... -
Niveles de nitratos en forrajes de pastoreo y corta de 30 lecherías especializadas costarricenses.
(Universidad Nacional, Costa Rica, 2022-10)Los nitratos son factores tóxicos que se pueden acumular en los forrajes en ciertas condiciones de clima y fertilización. Fue el objetivo del estudio cuantificarlos en forrajes de 30 lecherías en Costa Rica, durante 2 ... -
Niveles séricos de tetrayodotironina, triyodotironina y cortisol en caninos de Costa Rica mediante un analizador de inmunoensayo
(Universidad Nacional, Costa Rica, 2012)Los intervalos de referencia hormonales varían según el método de medición empleado y el ambiente geoquímico donde las poblaciones se desarrollan. Por ende, cada laboratorio debe contar con intervalos de referencia propios ... -
Nonlinear impacts of climatic variability on the density dependent regulation of an insect vector of disease
(Blackwell, 2011-09)Aedes aegypti is one of the most common urban tropical mosquito species and an important vector of dengue, chikungunya, and yellow fever viruses. It is also an organism with a complex life history where larval stages ... -
Novel genotype of Ehrlichia canis detected in samples of human blood bank donors in Costa Rica
(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 ... -
Objective evaluation for analgesia of the distal interphalangeal joint, the navicular bursa and perineural analgesia in horses with naturally occurring forelimb lameness localised to the foot
(Willey, 2022)Background: The outcome and interpretation of intra-synovial diagnostic analgesia of the distal interphalangeal joint (DIPJ) and the navicular bursa (NB) remain in dis- pute, and no objective studies have been carried ... -
Odontología de Pequeñas Especies con Énfasis en Enfermedad Periodontal en Caninos
(Universidad Nacional, Costa Rica, 2009-09-17)La presente pasantía se realizó entre los meses de junio y octubre del 2008. Consistió en tres etapas. La primera etapa se llevó a cabo en el Hospital de Especies Menores y Silvestres de la Universidad Nacional y en la ... -
Oftalmología veterinaria en especies menores con énfasis en trastornos oculares externos en caninos
(Universidad Nacional, Costa Rica, 2014-01-22)La finalidad primordial de este trabajo, fue adquirir experiencia y destrezas en el reconocimiento y abordaje de las afecciones del ojo canino, sobre todo el diagnóstico de los trastornos oculares externos, los cuales ... -
Olor de repelentes ahuyenta a mapaches
(Oficina de Comunicación, Universidad Nacional, 2021-09)Aparte de las clásicas medidas para controlar las poblaciones de mapaches en zonas urbanas, como el manejo adecuado de residuos en contenedores “a prueba de mapaches”, limitar el acceso a refugios en casas y edificios, ... -
Optimal Age at First Calving in Pasture-Based Dairy Systems
(MPDI, 2023-10-30)The age at first calving (AFC) is one of the most used indicators to evaluate the efficiency of rearing systems in dairy herds. The objective of the present study was to evaluate the association between AFC and different ... -
Optimización de técnicas de PCR para la detección de Salmonella enterica (serotipo Gallinarum) en aves de corral de Costa Rica
(UNED, 2022-02-21)Introducción: La tifosis aviar y la pulorosis, enfermedades ocasionadas por Salmonella enterica subsp. enterica (serotipo Gallinarum, biotipos Gallinarum y Pullorum), son responsables de una elevada mortalidad en aves ...