Identificación molecular de hemoparásitos transmitidos por garrapatas en equinos del Noroeste de Colombia

Objetive. To detect and identify Anaplasmataceae agents and piroplasms in equines from the slaughterhouse “La Rinconada” at Rionegro municipality in Antioquia. Materials and Methods. A descriptive cross-sectional study was carried out on equines selected by convenience during a period of 2015. Information about species, sex, age and origin of the animals. Whole blood was collected for DNA extraction procedure, and a PCR targeting a 360bp of Anaplasmataceae 16S ribosomal gene and 450bp of 18S ribosomal gene of Piroplasm were used for detection. PCR amplicons selected were submitted to direct sequencing for identification of hemoparasites through genetic analysis. Results. 135 equine samples from Antioquia, Cordoba y Sucre were analyzed. 78% were horses, 16% were donkeys and 6% were mules. Anaplasmataceae agents were not detected in any sample, meanwhile 13% were positive to piroplasm PCR. Sequence analysis reveals the circulation of Theileria equi in northwestern Colombia. Conclusion. This work presents the first molecular evidence of at least three genotypes of T. equi in equines of northwestern Colombia.Objetivo. Detectar e identificar agentes de la familia Anaplasmataceae y piroplasmas en equinos colombianos que llegan a la planta de beneficio La Rinconada ubicada en el municipio de Rionegro, Antioquia. Materiales y métodos. Se realizó un estudio descriptivo de corte transversal durante parte del 2015 a equinos seleccionados por conveniencia. Se recopiló información tal como especie, sexo, edad y localidad de procedencia. Se obtuvieron muestras de sangre para extracción de ADN, y se amplificó un fragmento de 360pb del gen 16S ribosomal de Anaplasmataceae y un fragmento de 450 pb del gen 18S ribosomal de piroplasmas para detección de hemoparásitos. Amplicones de PCR fueron sometidos a secuenciación para identificación de los hemoparásitos a través de análisis genético. Resultados. Se analizaron 135 equinos provenientes de los departamentos de Antioquia, Córdoba y Sucre. Un 78% eran caballos, un 16% eran asnos y un 6% eran mulas. El 100% de los animales fueron negativos para agentes de la familia Anaplasmataceae y un 13% fueron positivos para piroplasmas. Se identificó por secuenciación la circulación de Theileria equi en la zona norte de Colombia. Conclusión. Se presenta la primera evidencia molecular de al menos tres genotipos de T. equi infectando equinos del norte del país

Spin-Flip Noise in a Multi-Terminal Spin-Valve

We study shot noise and cross correlations in a four terminal spin-valve geometry using a Boltzmann-Langevin approach. The Fano factor (shot noise to current ratio) depends on the magnetic configuration of the leads and the spin-flip processes in the normal metal. In a four-terminal geometry, spin-flip processes are particular prominent in the cross correlations between terminals with opposite magnetization.Comment: 4 pages, 3 figure

Control of sulphide during anaerobic treatment of S-containing wastewaters by adding limited amounts of oxygen or nitrate

Sulphide generated during anaerobic treatment of S-containing wastewaters represents an environmental problem. Adding limited amounts of oxygen or nitrate (or nitrite) to biologically (or chemically) oxidise sulphide forms a simple process level strategy to control this problem. This short review evaluates the feasibility and limitations of this strategy on the basis of the results of bioreactor studies.Sulphide generated during anaerobic treatment of S-containing wastewaters represents an environmental problem. Adding limited amounts of oxygen or nitrate (or nitrite) to biologically (or chemically) oxidise sulphide forms a simple process level strategy to control this problem. This short review evaluates the feasibility and limitations of this strategy on the basis of the results of bioreactor studies.Spanish Ministry of Education and Science; AEA Technology Environment; Nova Energie; The Swedish Gas Centre; University of Southern Denmark

Dynamics of Responses in Compatible Potato - Potato virus Y Interaction Are Modulated by Salicylic Acid

To investigate the dynamics of the potato – Potato virus Y (PVY) compatible interaction in relation to salicylic acid - controlled pathways we performed experiments using non-transgenic potato cv. Désirée, transgenic NahG-Désirée, cv. Igor and PVYNTN, the most aggressive strain of PVY. The importance of salicylic acid in viral multiplication and symptom development was confirmed by pronounced symptom development in NahG-Désirée, depleted in salicylic acid, and reversion of the effect after spraying with 2,6-dichloroisonicotinic acid (a salicylic acid - analogue). We have employed quantitative PCR for monitoring virus multiplication, as well as plant responses through expression of selected marker genes of photosynthetic activity, carbohydrate metabolism and the defence response. Viral multiplication was the slowest in inoculated potato of cv. Désirée, the only asymptomatic genotype in the study. The intensity of defence-related gene expression was much stronger in both sensitive genotypes (NahG-Désirée and cv. Igor) at the site of inoculation than in asymptomatic plants (cv. Désirée). Photosynthesis and carbohydrate metabolism gene expression differed between the symptomatic and asymptomatic phenotypes. The differential gene expression pattern of the two sensitive genotypes indicates that the outcome of the interaction does not rely simply on one regulatory component, but similar phenotypical features can result from distinct responses at the molecular level

The exposure of the nursing profession in online and print media

OBJECTIVE: to describe the coverage of news concerning the nursing profession in the Portuguese media: informative sites on the Internet and in print media. METHOD: a total of 1,271 health news items were collected in September and October of 2011 (956 online news items and 325 news items originating from the press review of the Portuguese Order of Nurses). Statistical analysis was used to characterize the variables. RESULTS: nurses were the sources of information in 6.6% of cases, suggesting limited media exposure. The health news collected is characterized by a production based on limited information sources, that is, male and official sources, on information disseminated by news agencies focused on economic and political issues in the health field. CONCLUSION: the presence of nurses in the news concerning nursing health is reduced. We suggest that nurses develop public communication skills to disseminate the importance of their profession in society and their relationship with the media

GIS as a tool to detect flat erosional surfaces in coastal areas: a case study in North Spain

The delimitation of flat surfaces, such as marine or continental terraces, can be easily done if they are wellpreserved by using classic techniques such as fieldwork and photointerpretation. However, subsequent landscapeerosion can modify their initial morphology, hindering their recognition. This paper presents a methodologydesigned to identify and delineate flat erosional surfaces (known as rasas) in a sector of 1,228km2 in theCantabrian coast (eastern Asturias, N Spain). The spatial distribution of rasas was quantitatively established bycomparing the Digital Terrain Model (DTM) with previously available information about flat surfaces alreadymapped. From a lithological point of view, rasas are modelled on Ordovician quartzite (9.7km2 of 1,228) mainlybetween 132–232m above sea level (a.s.l.) altitude and on Carboniferous limestone (2.9km2 of 1,228) mainlybetween 24–69m a.s.l. The use of Geographic Information Systems (GIS) combined with a quantitative analysisof the relief (using the hypsometric method) allowed us to develop a predictive approach for flat erosionalsurface detection. The methodology has been tested and validated in areas in which there were no erosionalsurfaces previously mapped. The results reveal new surfaces modelled on Ordovician quartzite (0.43km2), ataltitudes ranging from 200 to 250m, on Jurassic mixed formations (35.9km2) at 150–175m altitude, and onEocene limestone (1.1km2) at 110–120m altitude