273 research outputs found

    Manejo de la falla respiratoria catastrófica en el adulto

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    ResumenEl SDRA severo es un síndrome clínico de relativa frecuencia en la unidades críticas y de elevada morbi-mortalidad, la que no ha sido modificada significativamente a pesar de los avances en la investigación clínica. Un conocimiento profundo de su fisiopatología y las condiciones particulares de cada caso permiten un manejo adecuado. Un número importante de estrategias de manejo han sido investigadas, con variable resultado, pero es improbable que una sola de ellas conduzca a resultados clínicos exitosos. Al revés, una combinación juiciosa e informada de las diferentes alternativas terapéuticas disponibles es la única opción conocida hoy día para el manejo de estos pacientes. La transferencia precoz de estos casos a centros de referencia con experiencia y equipamiento en el manejo de esta patología puede salvar vidas.SummarySevere ARDS is a relatively common clinical syndrome in critical care units and carries a high morbi-mortality, which has not been significantly modified despite advances in clinical research. A thorough understanding of its pathophysiology and the particular conditions of each case allow proper management. A significant number of therapeutical strategies has been investigated, with variable results, but it is unlikely that one of them alone leads to successful clinical outcomes. Conversely, an informed and judicious combination of the different therapeutic options available is the only strategy known today for the management of this patients. An early referral of this cases to centers with expertise and equipment in the management of this disease can save lives

    Organização de base de dados de indicadores sociais e econômicos sobre a Região Metropolitana de Campinas para uso em ambiente escolar.

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    Construir base de dados e série de mapas temáticos sobre indicadores sociais e econômicos da Região Metropolitana de Campinas (RMC) utilizando dados de acesso público e ferramentas de geotecnologias como contribuição à elaboração de material didático para o ensino fundamental.bitstream/item/84749/1/044-12.pd

    Geotecnologias na elaboração de material didático para o ensino fundamental: Atlas escolar da Região Metropolitana de Campinas.

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    Este artigo tem o objetivo de apresentar as etapas que levaram à construção do Atlas escolar da Região Metropolitana de Campinas. O recurso didático produzido pela equipe pode ser consultado e utilizado em escolas da região de Campinas e também pode servir de modelo para outras escolas interessadas em replicar a experiência

    Prokineticin 2 upregulation in the peripheral nervous system has a major role in triggering and maintaining neuropathic pain in the chronic constriction injury model

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    The new chemokine Prokineticin 2 (PROK2) and its receptors (PKR1 and PKR2) have a role in inflammatory pain and immunomodulation. Here we identified PROK2 as a critical mediator of neuropathic pain in the chronic constriction injury (CCI) of the sciatic nerve in mice and demonstrated that blocking the prokineticin receptors with two PKR1-preferring antagonists (PC1 and PC7) reduces pain and nerve damage. PROK2 mRNA expression was upregulated in the injured nerve since day 3 post injury (dpi) and in the ipsilateral DRG since 6 dpi. PROK2 protein overexpression was evident in Schwann Cells, infiltrating macrophages and axons in the peripheral nerve and in the neuronal bodies and some satellite cells in the DRG. Therapeutic treatment of neuropathic mice with the PKR-antagonist, PC1, impaired the PROK2 upregulation and signalling. This fact, besides alleviating pain, brought down the burden of proinflammatory cytokines in the damaged nerve and prompted an anti-inflammatory repair program. Such a treatment also reduced intraneural oedema and axon degeneration as demonstrated by the physiological skin innervation and thickness conserved in CCI-PC1 mice. These findings suggest that PROK2 plays a crucial role in neuropathic pain and might represent a novel target of treatment for this disease

    The SUCCESSO-TERRA project: A lesson of sustainability from the terramare culture, middle bronze age of the po plain (Northern Italy)

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    This backstory article deals with the SUCCESSO-TERRA Project (2017–2020), an interdisciplinary research program aiming at reconstructing the land-use transformations that occurred during the development of the Terramare culture in the southern-central Po Plain of Northern Italy. Topics include climate-environment changes, human impact and exploitation of natural resources that are interconnected topics in human ecology and environmental sciences. These topics can only be understood in a long-term perspective integrating archaeology, geology, botany and other sciences. The text includes the theoretical basis, the research strategy and the main methodological approaches given by geoarchaeology and palynology, the two research sides constituting the partnership of the project

    AD-linked, toxic NH2 human tau affects the quality control of mitochondria in neurons

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    Functional as well as structural alterations in mitochondria size, shape and distribution are precipitating, early events in progression of Alzheimer's Disease (AD). We reported that a 20\u201322 kDa NH2-tau fragment (aka NH2htau), mapping between 26 and 230 amino acids of the longest human tau isoform, is detected in cellular and animal AD models and is neurotoxic in hippocampal neurons. The NH2htau \u2013but not the physiological full-length protein\u2013 interacts with A\u3b2 at human AD synapses and cooperates with it in inhibiting the mitochondrial ANT-1-dependent ADP/ATP exchange. Here we show that the NH2htau also adversely affects the interplay between the mitochondria dynamics and their selective autophagic clear- ance. Fragmentation and perinuclear mislocalization of mitochondria with smaller size and density are early found in dying NH2htau-expressing neurons. The specific effect of NH2htau on quality control of mitochondria is accompanied by (i) net reduction in their mass in correlation with a general Parkin- mediated remodeling of membrane proteome; (ii) their extensive association with LC3 and LAMP1 autoph- agic markers; (iii) bioenergetic deficits and (iv) in vitro synaptic pathology. These results suggest that NH2htau can compromise the mitochondrial biology thereby contributing to AD synaptic deficits not only by ANT-1 inactivation but also, indirectly, by impairing the quality control mechanism of these organelles

    Analysis of the RLMS Adaptive Beamforming Algorithm Implemented with Finite Precision

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    This paper studies the influence of the use of finite wordlength on the operation of the RLMS adaptive beamformingalgorithm. The convergence behavior of RLMS, based on the minimum mean square error (MSE), is analyzed for operation with finite precision. Computer simulation results verify that a wordlength of nine bits is sufficient for the RLMS algorithm to achieve performance close to that provided by full precision. The performance measures used include residual MSE, rate of convergence, error vector magnitude (EVM), and beam pattern. Based on all these measures, it is shown that the RLMS algorithm outperforms other earlier algorithms, such as least mean square (LMS), recursive least square (RLS), modified robust variable step size (MRVSS) and constrained stability LMS (CSLMS)

    AD-linked, toxic NH2 human tau affects the quality control of mitochondria in neurons

    No full text
    Functional as well as structural alterations in mitochondria size, shape and distribution are precipitating, early events in progression of Alzheimer's Disease (AD). We reported that a 20\u201322 kDa NH2-tau fragment (aka NH2htau), mapping between 26 and 230 amino acids of the longest human tau isoform, is detected in cellular and animal AD models and is neurotoxic in hippocampal neurons. The NH2htau \u2013but not the physiological full-length protein\u2013 interacts with A\u3b2 at human AD synapses and cooperates with it in inhibiting the mitochondrial ANT-1-dependent ADP/ATP exchange. Here we show that the NH2htau also adversely affects the interplay between the mitochondria dynamics and their selective autophagic clear- ance. Fragmentation and perinuclear mislocalization of mitochondria with smaller size and density are early found in dying NH2htau-expressing neurons. The specific effect of NH2htau on quality control of mitochondria is accompanied by (i) net reduction in their mass in correlation with a general Parkin- mediated remodeling of membrane proteome; (ii) their extensive association with LC3 and LAMP1 autoph- agic markers; (iii) bioenergetic deficits and (iv) in vitro synaptic pathology. These results suggest that NH2htau can compromise the mitochondrial biology thereby contributing to AD synaptic deficits not only by ANT-1 inactivation but also, indirectly, by impairing the quality control mechanism of these organelles
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