508 research outputs found

    Ocular emergencies in children: Demographics, origin, symptoms, and most frequent diagnoses

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    To describe the epidemiology of ocular emergencies in children in a hospital-based emergency room (ER). Methods. ,e medical reports of all children, 14 years of age and younger, who attended La Paz University Hospital (Madrid, Spain) ER from September 2015 to August 2016 were prospectively collected. Demographic data, origin, symptom for consultation, diagnostic tests, final diagnosis, and final referral of patients were recorded. Results. A total of 774 children were attended: 57% boys and 43% girls. Mean age was 5 years (SD 4.10 years, range 0–14 years) without significant differences between sexes. Most children went to the ER because parents or teachers took the decision (75%), 24% were referred from the paediatric ER for evaluation, and 0.78% were referred from another hospital or by an out-clinic ophthalmologist. ,e reasons for consultation were red eyes (61%), traumatism (17%), referred from the paediatrician to have the fundus explored in children with headache (7%), eyelids problems (7%), and visual loss (7%). ,e most frequent diagnoses were infectious conjunctivitis (29%), corneal erosion (17%), normal examination (15%), and allergic conjunctivitis (13%). ,e most severe cases (visual loss, acute strabismus, and leucocoria) were referred by the paediatricians and represented 4.65% of the total patients. Visits occurred more frequently during the third trimester of the year (July–September), with a higher incidence of eye trauma in summer. Conclusions. Infectious conjunctivitis was the most frequent pathology. It is necessary to increase public awareness about the symptoms, the way of transmission, and treatment. Ocular trauma was also a common cause of presentation and the majority were contusional and mild. ,ere is also a need for education of parents, teachers, and coaches regarding the potential for eye injuries. Ophthalmologists and paediatricians must take an active role in educating people about the prophylactic measures to prevent eye injuries in childre

    Identification by proximity labeling of novel lipidic and proteinaceous potential partners of the dopamine transporter

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    Dopamine (DA) transporters (DATs) are regulated by trafficking and modulatory processes that probably rely on stable and transient interactions with neighboring proteins and lipids. Using proximity-dependent biotin identification (BioID), we found novel potential partners for DAT, including several membrane proteins, such as the transmembrane chaperone 4F2hc, the proteolipid M6a and a potential membrane receptor for progesterone (PGRMC2). We also detected two cytoplasmic proteins: a component of the Cullin1-dependent ubiquitination machinery termed F-box/LRR-repeat protein 2 (FBXL2), and the enzyme inositol 5-phosphatase 2 (SHIP2). Immunoprecipitation (IP) and immunofluorescence studies confirmed either a physical association or a close spatial proximity between these proteins and DAT. M6a, SHIP2 and the Cullin1 system were shown to increase DAT activity in coexpression experiments, suggesting a functional role for their association. Deeper analysis revealed that M6a, which is enriched in neuronal protrusions (filopodia or dendritic spines), colocalized with DAT in these structures. In addition, the product of SHIP2 enzymatic activity (phosphatidylinositol 3,4-bisphosphate [PI(3,4)P2]) was tightly associated with DAT, as shown by co-IP and by colocalization of mCherry-DAT with a specific biosensor for this phospholipid. PI(3,4)P2 strongly stimulated transport activity in electrophysiological recordings, and conversely, inhibition of SHIP2 reduced DA uptake in several experimental systems including striatal synaptosomes and the dopaminergic cell line SH-SY5Y. In summary, here we report several potential new partners for DAT and a novel regulatory lipid, which may represent new pharmacological targets for DAT, a pivotal protein in dopaminergic function of the brainOpen Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This work was supported by grants from the Spanish MINECO (RTI2018-098712-B-100) and the “Fundación Ramón Areces”, the latter also providing an institutional grant to CBMS

    Climate Change Perceptions and Adaptations among Smallholder Farmers in the Mountains of Eastern Democratic Republic of Congo

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    The warming rates in many mountain areas are higher than the global average, negatively impacting crop systems. Little is known about the climatic changes which are already being observed in eastern Democratic Republic (DR) of Congo, due to the lack of long-term meteorological data. Local perceptions could help us to understand not only the climatic changes and impacts but also which adaptation strategies are already being used by local smallholder farmers. Semi-structured questionnaires were administered to 300 smallholder Bafuliru (n = 150) and Lega (n = 150) farmers living in the Itombwe Mountains. The respondents reported climatic changes and impacts, with the Bafuliru—living on the eastern drier slopes—reporting more changes and impacts. While the Bafuliru were implementing several adaptation strategies (e.g., increased irrigation and use of inputs, more soil conservation, more income diversification), the Lega were implementing very few, due to soft limits (access to inputs, markets, and information) and culture (less interest in farming, less capacity to organize into groups). The results highlight important differences in sociocultural contexts, even for one ‘remote’ mountain, calling for a more collaborative approach to adaptation planning and action.We acknowledge funding from Ecole Régionale d’Aménagement et Gestion Intégrés des Forêts et Territoires Tropicaux (ERAIFT) and Rainforest Foundation Norway (RFN)

    Binary reaction decays from 24Mg+12C

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    Charged particle and gamma decays in 24Mg* are investigated for excitation energies where quasimolecular resonances appear in 12C+12C collisions. Various theoretical predictions for the occurence of superdeformed and hyperdeformed bands associated with resonance structures with low spin are discussed within the measured 24Mg* excitation energy region. The inverse kinematics reaction 24Mg+12C is studied at E_lab(24Mg) = 130 MeV, an energy which enables the population of 24Mg states decaying into 12C+12C resonant break-up states. Exclusive data were collected with the Binary Reaction Spectrometer in coincidence with EUROBALL IV installed at the VIVITRON Tandem facility at Strasbourg. Specific structures with large deformation were selectively populated in binary reactions and their associated gamma decays studied. Coincident events associated with inelastic and alpha-transfer channels have been selected by choosing the excitation energy or the entry point via the two-body Q-values. The analysis of the binary reaction channels is presented with a particular emphasis on 24Mg-gamma, 20Ne-gamma and 16O-gamma coincidences. New information (spin and branching ratios) is deduced on high-energy states in 24Mg and 16O, respectively.Comment: 27 pages, 8 figures, 1 tabl

    Voltammetric electronic tongue for the simultaneous determination of three benzodiazepines

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    The presented manuscript reports the simultaneous detection of a ternary mixture of the benzodiazepines diazepam, lorazepam, and flunitrazepam using an array of voltammetric sensors and the electronic tongue principle. The electrodes used in the array were selected from a set of differently modified graphite epoxy composite electrodes; specifically, six electrodes were used incorporating metallic nanoparticles of Cu and Pt, oxide nanoparticles of CuO and WO, plus pristine electrodes of epoxy-graphite and metallic Pt disk. Cyclic voltammetry was the technique used to obtain the voltammetric responses. Multivariate examination using Principal Component Analysis (PCA) justified the choice of sensors in order to get the proper discrimination of the benzodiazepines. Next, a quantitative model to predict the concentrations of mixtures of the three benzodiazepines was built employing the set of voltammograms, and was first processed with the Discrete Wavelet Transform, which fed an artificial neural network response model. The developed model successfully predicted the concentration of the three compounds with a normalized root mean square error (NRMSE) of 0.034 and 0.106 for the training and test subsets, respectively, and coefficient of correlation R ≥ 0.938 in the predicted vs. expected concentrations comparison graph

    Large Deformation Effects in the N = Z 44Ti Compound Nucleus

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    The N = Z 44Ti* nucleus has been populated in Fusion Evaporation process at very high excitation energies and angular momenta using two entrance channels with different mass-asymmetry. The deformation effects in the rapidly rotating nuclei have been investigated through the energy distribution of the alpha-particle combined to statistical-model calculations. In the case of low-multiplicity events, the ratio between first particle emitted has been measured and shows significant disagreement with the predictions of the statistical-model. This may explain The large discrepancies observed in proton energy spectra measured in previous experiments performed in the same mass region.Comment: Proceeding of the 10th International Conference on Nuclear Reaction Mechanisms, Varenna Italy, June 9-13 2003. 10 pages, 6 figures, 1 tabl

    Efecto de un sistema automático de dispensación de medicamentos sobre el gasto farmacéutico y el grado de satisfacción del usuario

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    Objective: To evaluate in economic terms, the effect of replacing traditional kits for the implementation of automated dispensing of medications in the Intensive Care Unit. Analyze the degree of acceptance of such changeon the part of users.   Method: For the economic analysis is considered tangible direct and indirect costs resulting from the implementation: initial capital investment, cost of staff involved, the political cost of drug consumption. All these aspects were evaluated before and after implantation. The degree of user satisfaction was assessed using a standardized questionnaire. Results: After the estimation of costs, we found that the expenditure incurred on the initial investment will be quickly offset by the cost mainly referred to the politics of consumption of drugs with a reduction of 24% over the previous delivery system. The cost in personal chapter is also reduced by 11%, and the cost per stay and cost / income fell by 26% and 30% respectively over the previous system. The evaluation questionnaire revealed that users are satisfied with the implementation and 84% of nurses would recommend it to other units. Conclusions: Automated Dispensing Systems Drugs are a new technological tool to control drug spending, with good acceptance by users.Objetivo: Evaluar en términos económicos el efecto de la sustitución de botiquines tradicionales por la implantación de Sistemas Automáticos de Dispensación de Medicamentos en la Unidad de Cuidados Intensivos. Analizar el grado de aceptación de dicho cambio por parte de los usuarios.   Método: Para el análisis económico, se consideraron los costes directos e indirectos tangibles, derivados de la implantación: inversión inicial de capital, coste del personal implicado, coste en política de consumo de medicamentos. Todos estos aspectos se evaluaron antes y después de la implantación. El grado de satisfacción de los usuarios se evaluó a través de un cuestionario estandarizado.   Resultados: Tras la estimación de los costes, comprobamos que el gasto realizado en la inversión inicial se verá rápidamente compensado fundamentalmente por el coste referido a la política de consumos de medicamentos con una reducción del 24% con respecto al sistema de dispensación anterior. El coste en el capitulo de personal también se ve reducido un 11%, así como el coste/estancia y coste/ingreso que disminuyen un 26% y 30% respectivamente en relación al sistema anterior. La evaluación del cuestionario reveló que los usuarios están satisfechos con la implantación y un 84% del personal de enfermería lo recomendaría a otras unidades.   Conclusiones: Los Sistemas Automáticos de Dispensación de Medicamentos constituyen una nueva herramienta tecnológica para el control del gasto farmacéutico, con buena aceptación por parte de los usuario

    Reaction mechanisms in 24Mg+12C and 32S+24Mg

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    The occurence of "exotic" shapes in light N=Z alpha-like nuclei is investigated for 24Mg+12C and 32S+24Mg. Various approaches of superdeformed and hyperdeformed bands associated with quasimolecular resonant structures with low spin are presented. For both reactions, exclusive data were collected with the Binary Reaction Spectrometer in coincidence with EUROBALL IV installed at the VIVITRON Tandem facility of Strasbourg. Specific structures with large deformation were selectively populated in binary reactions and their associated γ\gamma-decays studied. The analysis of the binary and ternary reaction channels is discussed.Comment: 7 pages, 4 figures, Paper presented at the Fusion08 International Conference on New Aspects of Heavy Ion Collisions Near the Coulomb Barrier, Chicago. Proceedings to be published by AIP Conference Proceedings Illinois, USA, September 22-26, 200

    Verrucous carcinoma of the oral mucosa: an epidemiological and follow-up study of patients treated with surgery in 5 last years

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    Introduction: Oral Verrucous Carcinoma (OVC) is described apart of the Squamous Cell Carcinoma (SCC) due to its specific properties. The objective of our study is to show our series of cases of OVC and to compare with the SCC in terms of clinical manifestations, epidemiology, histopathology, treatment and follow-up. Material and Methods: This is a retrospective study of all the OVC treated in our department between January- 2007 and December-2011. The analyzed variables were sex, age, localization in the oral cavity, histopathology, number of biopsies needed to diagnose OVC, TNM classification, treatment and recurrences during follow-up. Results: Our sample was composed by n=14 patients, 57% female, with a mean age of 69.14 years. The most com - mon localization was buccal mucosa (n=5). Seven patients were diagnosed of OVC with the first biopsy. TNM classification was: pT1: 7 patients, pT2: 3 patients, pT3: 3 patients, pT4: 1 patient. No cervical metastases were observed either in cervical neck dissection or during the follow-up of the patients. The treatment was surgery with clinical resection margins up to 1 cm in all cases, followed by radiotherapy in selected cases. Only n=1 patient (7.69%) presented a recurrence after 34 months of follow-up. The overall survival rate was 92.85%. Conclusions: In our population, OVC represents the 6.16% of all oral cavity and oropharynx cancer, and is more frequent in female patients above 70 years old. It uses to rise over a previous lesion, and usually affects the buccal mucosa. In patients with high suspicious lesions, more than one biopsy may be needed to diagnose OVC. No pa - tient showed cervical dissemination. In our experience, treatment based on local resection, without cervical neck dissection, could be a good option for these patients
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