1,976 research outputs found

    Seed bank of native species from Monte and Payunia for ecological restoration

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    La desertificación y sus consecuencias en las tierras áridas y semiáridas llevan a la necesidadde emprender estrategias de conservación y restauración. En este trabajo se presentan los objetivos y composición de la colección de semillas del Banco del Árido perteneciente a la Universidad Nacional del Comahue. Actualmente se cuenta con accesiones de más de 50 especies de Monte y Payunia colectadas con participación de pobladores locales.Desertifiation and its consequences on arid and semiarid lands make it necessary to implement conservation and restoration procedures. This paper presents the objectives and composition of the seed collection of the Banco del Árido belonging to the Universidad Nacional del Comahue. We currently count with accessions of more than fit (50) species of seeds from Monte y Payunia collected with participation of local residents.Fil: Rodriguez Araujo, María Emilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Universidad Nacional del Comahue. Facultad de Ciencias del Ambiente y la Salud. Laboratorio de Rehabilitación y Restauración Ecológica de Ecosistemas Áridos y Semiáridos; ArgentinaFil: Turuelo, Natalia Mirna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Universidad Nacional del Comahue. Facultad de Ciencias del Ambiente y la Salud. Laboratorio de Rehabilitación y Restauración Ecológica de Ecosistemas Áridos y Semiáridos; ArgentinaFil: Pérez, Daniel Roberto. Universidad Nacional del Comahue. Facultad de Ciencias del Ambiente y la Salud. Laboratorio de Rehabilitación y Restauración Ecológica de Ecosistemas Áridos y Semiáridos; Argentin

    Concesión Sabio Caldas - Gimnasio Moderno Un caso de responsabilidad social, stakeholders y bien común

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    En la última década del siglo XX se comenzó a notar en el mundo cómo los valores y virtudes de la sociedad se veían opacados por el actuar de algunas compañías. Era normal escuchar cada semana noticias que hacían referencia a comportamientos antiéticos cometidos por los directivos de algunas prestigiosas empresas. Ante esta situación, el mundo empezó a despertar la necesidad de retomar los valores una vez más y a hacerlos parte no sólo de la enseñanza familiar sino también de la académica e incluso de la laboral. Surgieron seminarios en los cuales uno de los temas principales era la responsabilidad social empresarial y la relación con los stakeholders y el bien común. Sin embargo, estos temas no son nuevos; son conceptos utilizados en la literatura sobre administración para explicar el comportamiento de las organizaciones. Las teorías que tratan de fundamentar la responsabilidad social de las empresas se encuentran entre dos polos opuestos: aquel que reduce dicha responsabilidad a la consecución de beneficios para sus propietarios, y aquel que extiende la responsabilidad de las empresas para incluir a una amplia gama de actores que tienen intereses en ella. Aun cuando la teoría de los stakeholders es más atractiva, desde el punto de vista ético, carece de fundamentos sólidos que la hagan aceptable para diversas escuelas de pensamiento

    Benefit from decline: the primary transcriptome of Alteromonas macleodii str. Te101 during Trichodesmium demise

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    Interactions between co-existing microorganisms deeply affect the physiology of the involved organisms and, ultimately, the function of the ecosystem as a whole. Copiotrophic Alteromonas are marine gammaproteobacteria that thrive during the late stages of phytoplankton blooms in the marine environment and in laboratory co-cultures with cyanobacteria such as Trichodesmium. The response of this heterotroph to the sometimes rapid and transient changes in nutrient supply when the phototroph crashes is not well understood. Here, we isolated and sequenced the strain Alteromonas macleodii str. Te101 from a laboratory culture of Trichodesmium erythraeum IMS101, yielding a chromosome of 4.63 Mb and a single plasmid of 237 kb. Increasing salinities to ≥43 ppt inhibited the growth of Trichodesmium but stimulated growth of the associated Alteromonas. We characterized the transcriptomic responses of both microorganisms and identified the complement of active transcriptional start sites in Alteromonas at single-nucleotide resolution. In replicate cultures, a similar set of genes became activated in Alteromonas when growth rates of Trichodesmium declined and mortality was high. The parallel activation of fliA, rpoS and of flagellar assembly and growth-related genes indicated that Alteromonas might have increased cell motility, growth, and multiple biosynthetic activities. Genes with the highest expression in the data set were three small RNAs (Aln1a-c) that were identified as analogs of the small RNAs CsrB-C in E. coli or RsmX-Z in pathogenic bacteria. Together with the carbon storage protein A (CsrA) homolog Te101_05290, these RNAs likely control the expression of numerous genes in responding to changes in the environmentThis work was supported by the EU project MaCuMBA (grant agreement no. 311975) to WRH and FRVby the German Israeli Foundation grant no. 1133 to IB-F and WRHSupport of ML-P by a postdoctoral fellowship from the Valencian Consellería de Educació, Investigació, Cultura i Esport (APOSTD/2016/051)of SH by the China Scholarship Council is gratefully acknowledged

    Functional Recovery and Serum Angiogenin Changes According to Intensity of Rehabilitation Therapy After Stroke

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    Rehabilitation is still the only treatment available to improve functional status after the acute phase of stroke. Most clinical guidelines highlight the need to design rehabilitation treatments considering starting time, intensity, and frequency, according to the tolerance of the patient. However, there are no homogeneous protocols and the biological effects are under investigation. To investigate the impact of rehabilitation intensity (hours) after stroke on functional improvement and serum angiogenin (ANG) in a 6-month follow-up study. A prospective, observational, longitudinal, and multicenter study with three cohorts: strokes in intensive rehabilitation therapy (IRT, minimum 15 h/week) vs. conventional therapy (NO-IRT, <15 h/week), and controls subjects (without known neurological, malignant, or inflammatory diseases). A total of seven centers participated, with functional evaluations and blood sampling during follow-up. The final cohort includes 62 strokes and 43 controls with demographic, clinical, blood samples, and exhaustive functional monitoring. The median (IQR) number of weekly hours of therapy was different: IRT 15 (15-16) vs. NO-IRT 7.5 (5-9), p < 0.01, with progressive and significant improvements in both groups. However, IRT patients showed earlier improvements (within 1 month) on several scales (CAHAI, FMA, and FAC; p < 0.001) and the earliest community ambulation achievements (0.89 m/s at 3 months). There was a significant difference in ANG temporal profile between the IRT and NO-IRT groups (p < 0.01). Additionally, ANG was elevated at 1 month only in the IRT group (p < 0.05) whereas it decreased in the NO-IRT group (p < 0.05). Our results suggest an association of rehabilitation intensity with early functional improvements, and connect the rehabilitation process with blood biomarkers

    Ceylon Pink Tea: Estudio de factibilidad de entrada al mercado mexicano

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    Este documento contiene una síntesis del trabajo que se realizó dentro del PAP vinculación internacional con PYMES ciclo primavera 2018 en conjunto con la empresa Ceylon Pink Tea, como objetivo de determinar la factibilidad de entrar al mercado mexicano con el té Ceylon Pink Tea, las regulaciones para este tipo de productos, las características del consumidor y el tamaño del mismo. Este proyecto se desarrollo en tres etapas: producto, mercado y logística, concluyendo con los resultados y recomendaciones para la empresa.ITESO, A.C

    Actualidad de las Plantas Medicinales en Terapéutica

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    RESUMENLas plantas medicinales han sido utilizadas por el hombre desde tiempo inmemorial para el alivio o curación de sus enfermedades. En la actualidad no solo se utilizan como punto de partida para la obtención de medicamentos industriales sino que mantienen plena vigencia para el tratamiento de numerosas dolencias. A pesar de su origen natural no están exentas de riesgos para la salud pues algunas provocan reacciones adversas e interacciones con otros fármacos que hay que tener en cuenta.En el presente trabajo se repasan las principales plantas medicinales, de gran utilidad terapéutica y amplio uso, clasificadas de acuerdo con los sistemas funcionales sobre los que actúan.Palabras claveFitoterapia, medicamentos, acción farmacológica, principios activos, interacciones medicamento-planta medicinal. ABSTRACTMedicinal plants have been used for the relief or cure of several diseases for centuries. Most of the medicines we used today are derived straight from plants and medicinal plants are used as a drug themselves, with great utility in therapeutics. Despite their natural origin, herbal drugs are not free of side effects or interactions with other drugs that must be taken into account.This study review the efficacy and safety of the most used medicinal plants classified according to the functional systems where they act.Key words:Phytotherapy, medicines, pharmacological action, active principles, interactions drug-medicinal plant

    Cluster para aprendizaje y práctica de bigdata y servicios de learning analytics

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    Big Data es la nueva generación de almacenamiento, análisis de datos y de negocios. En el fenómeno del Big Data se considera, como fuentes de generación de datos a personas, smartphones, equipos que generan data de proyectos y experimentos, y, principalmente, a Internet. La tecnología Big Data permite recolectar, almacenar y preparar grandes volúmenes de datos, para analizar o visualizar la relación entre ellos, inclusive a partir de datos que se generan en tiempo real y provienen de redes sociales, sensores, dispositivos de diversa índole o fuentes de audio y video. En esta temática, el presente proyecto pretende, en una primera etapa, investigar tecnologías y arquitecturas para implementar un clúster en una plataforma web, donde estudiantes de la Facultad de Ingeniería de la UNJu, puedan aprender y practicar Big Data; en una segunda etapa se comenzará con una investigación en Analítica de Datos para evolucionar a Learning Analytics, utilizando algoritmos para medición, recopilación, análisis e informe de datos, sobre estudiantes universitarios y sus contextos, a fin de comprender y optimizar el aprendizaje y entornos en que se produce.Eje: Base de Datos y Minería de Datos.Red de Universidades con Carreras en Informátic

    Trends in hip fracture in patients with rheumatoid arthritis: Results from the Spanish National Inpatient Registry over a 17-year period (1999–2015). TREND-AR study

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    Purpose T o analyse trends in hip fracture (HF) rates in patients with rheumatoid arthritis (RA) over an extended time period (17 years). Methods T his observational retrospective survey was performed by reviewing data from the National Surveillance System for Hospital Data, which includes more than 98% of Spanish hospitals. All hospitalisations of patients with RA and HF that were reported from 1999 to 2015 were analysed. Codes were selected using the Ninth International Classification of Diseases, Clinical Modification: ICD-9-CM: RA 714.0 to 714.9 and HF 820.0 to 820.3. The crude and age-adjusted incidence rate of HF was calculated by age and sex strata over the last 17 years. General lineal models were used to analyse trends. Results Between 1999 and 2015, 6656 HFs occurred in patients with RA of all ages (84.25% women, mean age 77.5 and 15.75% men, mean age 76.37). The ageadjusted osteoporotic HF rate was 221.85/100 000 RA persons/ year (women 227.97; men 179.06). The HF incidence rate increased yearly by 3.1% (95% CI 2.1 to 4.0) during the 1999–2015 period (p<0.001) and was more pronounced in men (3.5% (95% CI 2.1 to 4.9)) than in women (3.1% (95% CI 2.3 to 4.1)). The female to male ratio decreased from 1.54 in 1999 to 1.14 in 2015. The average length of hospital stays (ALHS) decreased (p<0.001) from 16.76 days (SD 15.3) in 1999 to 10.78 days (SD 7.72) in 2015. Age at the time of hospitalisation increased (p<0.001) from 75.3 years (SD 9.33) in 1999 to 79.92 years (SD 9.47) in 2015. There was a total of 326 (4.9%) deaths during admission, 247 (4.4%) in women and 79 (7.5%) in men (p<0.001). Conclusion I n Spain, despite the advances that have taken place in controlling disease activity and in treating osteoporosis, the incidence rate of HF increased in both male and female patients with RA.This work has a help for the research provided by the Society of Rheumatology of the Community of Madrid (SORCOM)

    Expanding the genetic spectrum of TUBB1-related thrombocytopenia

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    β1-Tubulin plays a major role in proplatelet formation and platelet shape maintenance, and pathogenic variants in TUBB1 lead to thrombocytopenia and platelet anisocytosis (TUBB1-RT). To date, the reported number of pedigrees with TUBB1-RT and of rare TUBB1 variants with experimental demonstration of pathogenicity is limited. Here, we report 9 unrelated families presenting with thrombocytopenia carrying 6 β1-tubulin variants, p.Cys12LeufsTer12, p.Thr107Pro, p.Gln423*, p.Arg359Trp, p.Gly109Glu, and p.Gly269Asp, the last of which novel. Segregation studies showed incomplete penetrance of these variants for platelet traits. Indeed, most carriers showed macrothrombocytopenia, some only increased platelet size, and a minority had no abnormalities. Moreover, only homozygous carriers of the p.Gly109Glu variant displayed macrothrombocytopenia, highlighting the importance of allele burden in the phenotypic expression of TUBB1-RT. The p.Arg359Trp, p.Gly269Asp, and p.Gly109Glu variants deranged β1-tubulin incorporation into the microtubular marginal ring in platelets but had a negligible effect on platelet activation, secretion, or spreading, suggesting that β1-tubulin is dispensable for these processes. Transfection of TUBB1 missense variants in CHO cells altered β1-tubulin incorporation into the microtubular network. In addition, TUBB1 variants markedly impaired proplatelet formation from peripheral blood CD34+ cell-derived megakaryocytes. Our study, using in vitro modeling, molecular characterization, and clinical investigations provides a deeper insight into the pathogenicity of rare TUBB1 variants. These novel data expand the genetic spectrum of TUBB1-RT and highlight a remarkable heterogeneity in its clinical presentation, indicating that allelic burden or combination with other genetic or environmental factors modulate the phenotypic impact of rare TUBB1 variants.This work was partially supported by grants from Instituto de Salud Carlos III (ISCIII) and Feder (PI17/01311, PI17/01966, PI20/00926 and CB15/00055), Fundacion Séneca (19873/ GERM/15), Gerencia Regional de Salud (GRS 2061A/19 and 1647/A/17), Fundacion Mutua Madrile´ña (AP172142019), and ~ Sociedad Espanola de Trombosis y Hemostasia (Premio L ~ opez Borrasca 2019 and Ayuda a Grupos de Trabajo en Patologıa Hemorragica). The authors’ research on inherited platelet disorders is conducted in accordance with the aims of the Functional and Molecular Characterization of Patients with Inherited Platelet Disorders Project, from Grupo Espanol de Alteraciones Plaqueta- ~ rias Congenitas, which is supported by the Spanish Society of Thrombosis and Haemostasis. V.P.-B. has a predoctoral contract from CIBERER. L.B. was supported by a fellowship from Fondazione Umberto Veronesi. M.E.d.l.M.-B. holds a postdoctoral fellowship from the University of Murcia. A.M.-Q. holds a predoctoral grant from the Junta de Castilla y Leon

    P53 in Penile Squamous Cell Carcinoma : A Pattern-Based Immunohistochemical Framework with Molecular Correlation

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    Penile squamous cell carcinomas harbouring mutations of TP53 have an increased risk of lymph node metastases and an impaired prognosis, but the mutational analysis of the TP53 gene is not available in many pathology laboratories. Although p53 immunohistochemistry (IHC) has been proposed as an alternative to the molecular analysis, the current method of evaluation of p53 IHC has many inaccuracies. The aim of our study was to determine, in a series of 40 penile tumours, if a recently described pattern-based framework of p53 IHC evaluation correlates better than the classical method with the TP53 mutational status. Our results show that the new method has a very good correlation with TP53 mutations (95% sensitivity; 92% specificity), higher than that of the classical method, and can be considered as a reliable surrogate of the TP53 mutational status. This new framework can help clinicians to better define risk groups and refine treatment strategies. p53 immunohistochemistry (IHC) has been proposed as a surrogate for TP53 mutations in penile squamous cell carcinomas (PSCC). We aimed to evaluate the performance of a pattern-based evaluation of p53 IHC in PSCC. Human papilloma virus (HPV) DNA testing, p16 and p53 IHC, and whole exome sequencing were performed in a series of 40 PSCC. p53 IHC was evaluated following a pattern-based framework and conventional p53 IHC evaluation. Out of 40 PSCC, 12 (30.0%) were HPV-associated, and 28 (70.0%) were HPV-independent. The agreement between the p53 IHC pattern-based evaluation and TP53 mutational status was almost perfect (k = 0.85). The sensitivity and accuracy of the pattern-based framework for identifying TP53 mutations were 95.5% and 92.5%, respectively, which were higher than the values of conventional p53 IHC interpretation (54.5% and 70.0%, respectively), whereas the specificity was the same (88.9%). In conclusions, the pattern-based framework improves the accuracy of detecting TP53 mutations in PSCC compared to the classical p53 IHC evaluation
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