1,536 research outputs found

    Long-Term Safety of Tedizolid in a Patient With Spondilodiscitis After Switch From Linezolid Due to Toxicity

    Get PDF
    The patient is a 57-year-old man with liver cirrhosis, Bricker anastomosis after a radical cystoprostatectomy and, a history of bacteremias caused by extended-spectrum -lactamase-positive Escherichia coli, Enterococcus faecium, and Candida albicans. He presented with persistent low back pain and was diagnosed with vertebral osteomyelitis, for which he received ertapenem-linezolid treatment. However, after 20 days, linezolid had to be discontinued because of myelotoxicity and metabolic acidosis. The patient was switched to tedizolid, which, in combination with ertapenem, was successfully given for 114 days until biopsy showed no growth of gram-positive cocci. We conclude that tedizolid can be an alternative to linezolid in case of toxicity, especially in long-term treatments

    Current profiles and AC losses of a superconducting strip with elliptic cross-section in perpendicular magnetic field

    Full text link
    The case of a hard type II superconductor in the form of strip with elliptic cross-section when placed in transverse magnetic field is studied. We approach the problem in two steps, both based on the critical-state model. First we calculate numerically the penetrated current profiles that ensure complete shielding in the interior, without assuming an a priori form for the profiles. In the second step we introduce an analytical approximation that asumes that the current profiles are ellipses. Expressions linking the sample magnetization to the applied field are derived covering the whole range of applied fields. The theoretical predictions are tested by the comparison with experimental data for the imaginary part of AC susceptibility.Comment: 12 pages; 3 figure

    Bioavailability, mobility and leaching of phosphorus in a Mediterranean agricultural soil (ne Spain) amended with different doses of biosolids

    Get PDF
    The precipitation of sparingly soluble calcium phosphate in calcareous soils decreases the bioavailability of macronutrients, which makes their addition by way of fertilisers necessary. Sludge resulting from treating urban wastewater does not only provide significant amounts of phosphorus, but also helps lower the pH, thus increasing its bioavailability. The loss of part of soil nutrients due to irrigation or rain can contaminate groundwater. In order to assess the movement of phosphorus, a experiment was conducted on percolation columns, to which different doses of wastes were applied. The pH decreased by as much as 0.89 units, as well as the assimilable and soluble P, in intervals of 20 cm of depth, obtaining maximum values of 254 mg P kg-1 and 1455 lg P kg-1 respectively, and the P present in the leached water collected, which did not surpass 95 lg PL-1. The intent was to learn which was the majoritarian inorganic formed crystalline phase that immobilised the movement of phosphorus through the percolation column. The results obtained by the diffraction of X-rays are not conclusive, although they point to the formation of octacalcium phosphate. The diffractograms of the studied samples have similar diffraction lines to those of apatites

    Caracterización y principales patologías de la arenisca “Piedra Dorada” empleada en los edificios históricos de las ciudades de Úbeda y Baeza (Jaén, Sur de España)

    Get PDF
    La arenisca conocida como “Piedra Dorada” es uno de los materiales más empleados en la construcción de gran parte de los edificios históricos de la provincia de Jaén. Un ejemplo de ello se encuentra en las ciudades de Úbeda y Baeza, declaradas Patrimonio Cultural de la Humanidad por la Unesco. Se ha realizado una caracterización detallada de la roca, en sus principales variedades: “Viva”, “Franca” y “Jabaluna”. Ha sido analizado tanto material de las canteras originales como muestras de monumentos. En el presente trabajo se determinan las principales características mineralógicas, texturales y geoquímicas así como las propiedades físicas de las variedades de “Piedra Dorada”. Además se profundiza en el estudio de las principales patologías encontradas en los edificios históricos de las ciudades anteriormente citadas. A partir de los diferentes parámetros determinados se ha establecido un orden de calidad de las variedades de “Piedra Dorada”. También se han caracterizado los mecanismos de deterioro entre los que se encuentran: colonización biológica (líquenes, algas, musgos y plantas superiores), ascenso capilar, depósitos superficiales (sales y costras negras) y deterioros debidos a factores antrópicos como fugas en la red de alcantarillado, ausencia de cubiertas y bajantes, etc. Este estudio ha permitido conocer en detalle una de las piedras de construcción más importantes de Andalucía con el fin de garantizar su perdurabilidad a través de los años. The sandstone known as “Piedra Dorada”, or golden stone, is one of the most commonly used materials in the construction of many of the main historic buildings in the province of Jaén. Many examples can be found in the cities of Úbeda and Baeza, declared World Heritage Cities by UNESCO. A thorough characterization of their main varieties: “Viva”, “Franca” and “Jabaluna” has been done. Original quarry materials as well as samples of monuments have been analyzed. In this study we present a characterization of the mineralogical, textural and geochemistry features as well as the main physical properties of the varieties of “Piedra Dorada”. Furthermore, this research investigates in depth the main pathologies found in historic buildings in the cities mentioned above. We have established an order of quality of the varieties mentioned from the different parameters determined. We have also characterized the deterioration mechanisms amongst which are: biological colonization (lichens, algae, moss and higher plants), an increase in capillary action, surface deposits (salts and black crust) and anthropic factors such as leaks into the sewer network, absence of covers and downspouts, etc. This study has allowed us to know in detail one of the most important construction stones of Andalusia in order to ensure its durability for future years

    Normative data for calcaneal broadband ultrasound attenuation among children and adolescents from Colombia: the FUPRECOL Study

    Get PDF
    The authors are grateful to the Bogota District Education Secretary for the data used in this research. The authors would also like thank the Bogota District students, teachers, schools, and staff, who participated in this study.Quantitative ultrasound (QUS) has been found to be a safe and reliable method for evaluating bone mineral density (BMD). Using calcaneal QUS techniques, the current study contributes to remedying this gap in the literature by establishing normative data among children and adolescents from Colombia. Introduction Minimal data on BMD changes are available from populations in developing countries. BMD reference values for children and adolescents have not been published for a Latin-American population. The aim of this study was to establish a normal reference range of calcaneal broadband ultrasound attenuation (BUA) in Colombian children and adolescents with ages ranging from 9 to 17.9 years. Methods A sample of 1001 healthy Colombian youth (boys n = 445 and girls n = 556), children, and adolescents (9–17.9 years old) participated in the study. A calcaneus QUS parameter (BUA) was obtained for boys and girls, stratified by age group. Furthermore, height, weight, fat mass percentage, and body mass index were measured. Centile smoothed curves for the third, tenth, 25th, 50th, 75th, 90th, and 97th percentiles were calculated using the LMS method (L [curve Box–Cox], M [curve median], and S [curve coefficient of variation]). Results Mean (± SD) values for the participants’ anthropometric data were 12.9 ± 2.3 years of age, 45.2 ± 11.5 kg weight, 1.51 ± 0.1 m height, 19.5 ± 3.1 kg/m2 BMI, and 69.5 ± 17.1 dB/MHz BUA. Overall, all variables were significantly higher in boys except in BMI and body fat percentage. Girls generally had higher mean calcaneal BUA (dB/MHz) values than the boys, except in the age ranges 16 and 17.9, p> 0.05. In addition, the BUA (dB/MHz) increased with age throughout childhood and adolescence and reached a plateau by age 15–17.9 for girls. Conclusions For the first time, our results provide sex- and age-specific BUA reference values for Colombian children and adolescents aged 9–17.9 years. A more specific set of reference values is useful for clinicians and researchers and informs clinical practice to monitor bone mineral status.The FUPRECOL Study received funding from the Instituto Colombiano para el Desarrollo de la Ciencia y la Tecnología BFrancisco José de Caldas^ COLCIENCIAS [Contract N° 671-2014 Code 122265743978]

    Conservation status of Narcissus perezlarae Font Quer (Amaryllidaceae) in the Valencian Community

    Get PDF
    Narcissus perezlarae está incluido en el Catálogo Valenciano de Especies de Flora Amenazadas de la Comunidad Valenciana (Orden 6/2013) en la categoría "En peligro de extinción". Estudios recientes han demostrado su origen híbrido (= N. cavanillesii × N. miniatus [= N. serotinus auct.]). Por otro lado, el mayor especialista y monografía del género reclamó recientemente su autonomía como especie independiente, como N. piifontianus. Esta especie es endémica de la península Ibérica, presente en Alto Alentejo (Portugal), Sevilla y Cádiz (España), y en la parte oriental de la Cordillera Bética, entre Alicante y Valencia. Sin embargo, si se tratara como una especie independiente, sería un endemismo exclusivamente restringido a la Comunidad Valenciana. Siete poblaciones naturales han sido monitoreadas, cuyos datos censales oscilan anualmente. El último censo contiene 1.634 plantas. Desde 2010, se han llevado a cabo cinco experiencias de translocación en la provincia de Alicante. De un total de 8.970 ejemplares introducidos se ha registrado una tasa de supervivencia del 28,4% (2.545 plantas) en el último censo. Las poblaciones recién creadas aumentan el número de localidades conocidas de la especie en la Comunidad Valenciana y amplían considerablemente su distribución a lo largo del territorio.Narcissus perezlarae is included in the Valencian Catalogue of Threatened Species of the Valencian Community (Order 6/2013) in the category "In danger of extinction". Recent studies have demonstrated its hybridogenic origin (= N. cavanillesii × N. miniatus [= N. serotinus auct.]). On the other hand, the greatest specialist and monograph of the genus has most recently claimed its autonomy as an independent species, as N. piifontianus. This species is endemic to the Iberian Peninsula, present in Alto Alentejo (Portugal), Sevilla and Cadiz (Spain), and in the eastern part of the Baetic Mountains, between Alicante and Valencia. However, if treated as an independent species, it would be an endemism exclusively restricted to the Valencian Community. Seven natural populations have been monitored, whose census data oscillate annually. The latest census contains 1634 plants. Since 2010, five translocation experiences have been carried out in Alicante province. A total amount of 8,970 plants were translocated and a survival rate of 28,4% (2,545 plants) was observed in the latest census. The newly created populations increase the number of known locations of the species in the Valencian Community and considerably expand their distribution range along the territory

    Protocolo de sedo-analgesia para prevención del espasmo radial en hemodinámica cardíaca

    Get PDF
    Introducción y objetivo: El espasmo es la complicación más habitual en los cateterismos por arteria radial. Su frecuencia oscila entre el 10-30% y puede ser un factor limitante que impida la realización del cateterismo por esa vía. El objetivo de este estudio es evaluar con un nuevo protocolo de sedo-analgesia la reducción de la frecuencia del espasmo radial y la disminución de la ansiedad del paciente. Material y método: Estudio aleatorizado y prospectivo de 300 pacientes sometidos a cateterismo radial. Se randomizaron dos grupos, el Grupo I (n=150) con la pauta de sedación habitual (10mg diazepam sl) y el Grupo II (n=150) con una pauta de sedación con 2 mg de Midazolam + 0,035 mg/kg de Cloruro Mórfico y en caso de procedimientos de más de 45 minutos se añadía Fentanilo a 1 mcgr/kg. Resultados y conclusión: No se observaron diferencias significativas entre los dos grupos estudiados en cuanto a las características basales. La edad media de la población fue de 65 ± 11 años; 223 pacientes (74%) fueron hombres y el índice de masa corporal (IMC) medio 27,7 ± 3,8. Los pacientes del Grupo II presentaron reducción significativa del espasmo respecto a los del Grupo I (9,3% frente a 22,6%; p=0,002). También se objetivó una reducción significativa del dolor (2,05 frente a 2,77; p=0,007). La pauta sedo-analgésica propuesta demostró ser eficaz en la reducción del espasmo radial y del dolor durante el cateterismo

    Body composition, nutritional profile and muscular fitness affect bone health in a sample of schoolchildren from Colombia: The Fuprecol Study

    Get PDF
    This is the final version of the article. Available from the publisher via the DOI in this record.The objective of the present study is to investigate the relationships between body composition, nutritional profile, muscular fitness (MF) and bone health in a sample of children and adolescents from Colombia. Participants included 1118 children and adolescents (54.6% girls). Calcaneal broadband ultrasound attenuation (c-BUA) was obtained as a marker of bone health. Body composition (fat mass and lean mass) was assessed using bioelectrical impedance analysis. Furthermore height, weight, waist circumference and Tanner stage were measured and body mass index (BMI) was calculated. Standing long-jump (SLJ) and isometric handgrip dynamometry were used respectively as indicators of lower and upper body muscular fitness. A muscular index score was also computed by summing up the standardised values of both SLJ and handgrip strength. Dietary intake and degree of adherence to the Mediterranean diet were assessed by a 7-day recall questionnaire for food frequency and the Kidmed questionnaire. Poor bone health was considered using a z-score cut off of ≤−1.5 standard deviation. Once the results were adjusted for age and Tanner stage, the predisposing factors of having a c-BUA z-score ≤−1.5 standard deviation included being underweight or obese, having an unhealthy lean mass, having an unhealthy fat mass, SLJ performance, handgrip performance, and unhealthy muscular index score. In conclusion, body composition (fat mass and lean body mass) and MF both influenced bone health in a sample of children and adolescents from Colombia. Thus promoting strength adaptation and preservation in Colombian youth will help to improve bone health, an important protective factor against osteoporosis in later life.: We would like to acknowledge to Bogota District Education Department for supporting data collection for this study. The authors also thank the participating Bogota District students, teachers, schools, and staff. The “FUPRECOL Study” was possible given the financial support provided by the Instituto Colombiano para el Desarrollo de la Ciencia y la Tecnología “Francisco José de Caldas” COLCIENCIAS (Contract Number 671-2014 Code 122265743978). Also, during the completion of this paper, AG-H was visiting researchers at the University of Rosario (CEMA, Bogotá, Colombia), supported with grants awarded by Proyectos Basales y Vicerrectoría de Investigación, Desarrollo e Innovación” (Universidad de Santiago de Chile, USACH)

    Accelerated Variant of Idiopathic Pulmonary Fibrosis: Clinical Behavior and Gene Expression Pattern

    Get PDF
    Idiopathic pulmonary fibrosis (IPF) is characterized by the insidious onset of dyspnea or cough. However, a subset of patients has a short duration of symptoms with rapid progression to end-stage disease. In this study, we evaluated clinical and molecular features of "rapid" and "slow" progressors with IPF
    corecore