259 research outputs found

    MEDICAMENTOS COM PROPRIEDADES ANTI-INFLAMATÓRIAS EFICAZES CONTRA A COVID-19:: UMA REVISÃO SISTEMÁTICA

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    A COVID-19, sigla em inglês para “coronavirusdisease 2019” (doença por coronavírus 2019), tornou-se um desafio de saúde pública na atualidade por afetar um grande número de indivíduos e, consequentemente, impactar na economia e nos sistemas de saúde de todo o mundo. Apesar desta doença ainda não contar com um tratamento específico e eficaz, estudos não clínicos e clínicos demonstram o potencial terapêutico de alguns medicamentos que têm atividade direcionada para o combate do quadro inflamatório causado pela infecção. Nesse sentido, esta revisão sistemática objetivou analisar a eficácia dos medicamentos com efeitos anti-inflamatórios contra a COVID-19, enfatizando os seus mecanismos através de testes in vivo e in vitro. A revisão da literatura foi realizada nas plataformas PubMed e ScienceDirect, no período de dezembro de 2019 a agosto de 2020, selecionando 11 artigos elegíveis ao objetivo do presente trabalho. Com isso, através de estudos preliminares dos medicamentos, obtiveram-se, em geral, resultados positivos no combate a inflamação pela COVID-19. Entretanto, destaca-se a necessidade de mais estudos para caracterizar melhor seus possíveis efeitos adversos, bem como a eficácia desses medicamentos em longo prazo

    Importância da triagem pré-natal no manejo da sífilis gestacional e impactos para o concepto: uma revisão integrativa

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    A gestante diagnosticada com sífilis que não é tratada ou que é tratada de forma inadequada, pode transmitir essa infecção ao concepto, causando a sífilis congênita, um problema global de saúde pública, principalmente, em países em desenvolvimento, como o Brasil. Dentre os fatores que estão associados aos elevados números de sífilis congênita, pode-se destacar a falta ou uma assistência pré-natal deficiente. A presente revisão integrativa objetivou discutir a importância da assistência pré-natal de qualidade no manejo de grávidas com sífilis e seu impacto para a saúde concepto. Entre agosto e outubro de 2023, foi realizado o levantamento bibliográfico utilizando os descritores “sífilis” (syphilis), “cuidado pré-natal” (prenatal care) e “parto” (parturition) e seguindo os seguintes critérios de inclusão: artigos publicados nos últimos cinco anos, escritos em português ou inglês, publicados em periódicos com classificação Qualis CAPES mínimo B2 e com texto completo eletronicamente disponível. Após a busca bibliográfica, foram identificados um total de 111 artigos, sendo 90 na BVS e 11 na PubMed. Destes, 9 atenderam a todos os critérios e foram incluídos na presente revisão. Percebe-se que a falta de acesso ou o manejo deficiente da gestante com sífilis (diagnóstico tardio ou tratamento inadequado) durante a assistência pré-natal é responsável pelos números elevados de casos de sífilis congênita. Assim, faz-se necessário o desenvolvimento de estratégias que busquem fortalecer e qualificar a assistência pré-natal às gestantes com sífilis para reduzir ou eliminar os casos de sífilis congênita

    Neotropical freshwater fisheries : A dataset of occurrence and abundance of freshwater fishes in the Neotropics

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    The Neotropical region hosts 4225 freshwater fish species, ranking first among the world's most diverse regions for freshwater fishes. Our NEOTROPICAL FRESHWATER FISHES data set is the first to produce a large-scale Neotropical freshwater fish inventory, covering the entire Neotropical region from Mexico and the Caribbean in the north to the southern limits in Argentina, Paraguay, Chile, and Uruguay. We compiled 185,787 distribution records, with unique georeferenced coordinates, for the 4225 species, represented by occurrence and abundance data. The number of species for the most numerous orders are as follows: Characiformes (1289), Siluriformes (1384), Cichliformes (354), Cyprinodontiformes (245), and Gymnotiformes (135). The most recorded species was the characid Astyanax fasciatus (4696 records). We registered 116,802 distribution records for native species, compared to 1802 distribution records for nonnative species. The main aim of the NEOTROPICAL FRESHWATER FISHES data set was to make these occurrence and abundance data accessible for international researchers to develop ecological and macroecological studies, from local to regional scales, with focal fish species, families, or orders. We anticipate that the NEOTROPICAL FRESHWATER FISHES data set will be valuable for studies on a wide range of ecological processes, such as trophic cascades, fishery pressure, the effects of habitat loss and fragmentation, and the impacts of species invasion and climate change. There are no copyright restrictions on the data, and please cite this data paper when using the data in publications

    Ser e tornar-se professor: práticas educativas no contexto escolar

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    NEOTROPICAL CARNIVORES: a data set on carnivore distribution in the Neotropics

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    Mammalian carnivores are considered a key group in maintaining ecological health and can indicate potential ecological integrity in landscapes where they occur. Carnivores also hold high conservation value and their habitat requirements can guide management and conservation plans. The order Carnivora has 84 species from 8 families in the Neotropical region: Canidae; Felidae; Mephitidae; Mustelidae; Otariidae; Phocidae; Procyonidae; and Ursidae. Herein, we include published and unpublished data on native terrestrial Neotropical carnivores (Canidae; Felidae; Mephitidae; Mustelidae; Procyonidae; and Ursidae). NEOTROPICAL CARNIVORES is a publicly available data set that includes 99,605 data entries from 35,511 unique georeferenced coordinates. Detection/non-detection and quantitative data were obtained from 1818 to 2018 by researchers, governmental agencies, non-governmental organizations, and private consultants. Data were collected using several methods including camera trapping, museum collections, roadkill, line transect, and opportunistic records. Literature (peer-reviewed and grey literature) from Portuguese, Spanish and English were incorporated in this compilation. Most of the data set consists of detection data entries (n = 79,343; 79.7%) but also includes non-detection data (n = 20,262; 20.3%). Of those, 43.3% also include count data (n = 43,151). The information available in NEOTROPICAL CARNIVORES will contribute to macroecological, ecological, and conservation questions in multiple spatio-temporal perspectives. As carnivores play key roles in trophic interactions, a better understanding of their distribution and habitat requirements are essential to establish conservation management plans and safeguard the future ecological health of Neotropical ecosystems. Our data paper, combined with other large-scale data sets, has great potential to clarify species distribution and related ecological processes within the Neotropics. There are no copyright restrictions and no restriction for using data from this data paper, as long as the data paper is cited as the source of the information used. We also request that users inform us of how they intend to use the data

    Proton reconstruction with the CMS-TOTEM Precision Proton Spectrometer

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    International audienceThe Precision Proton Spectrometer (PPS) of the CMS and TOTEM experiments collected 107.7 fb1^{-1} in proton-proton (pp) collisions at the LHC at 13 TeV (Run 2). This paper describes the key features of the PPS alignment and optics calibrations, the proton reconstruction procedure, as well as the detector efficiency and the performance of the PPS simulation. The reconstruction and simulation are validated using a sample of (semi)exclusive dilepton events. The performance of PPS has proven the feasibility of continuously operating a near-beam proton spectrometer at a high luminosity hadron collider

    Search for central exclusive production of top quark pairs in proton-proton collisions at s\sqrt{s} = 13 TeV with tagged protons

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    International audienceA search for the central exclusive production of top quark-antiquark pairs (ttˉ\mathrm{t\bar{t}}) is performed for the first time using proton-tagged events in proton-proton collisions at the LHC at a centre-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 29.4 fb1^{-1}. The ttˉ\mathrm{t\bar{t}} decay products are reconstructed using the central CMS detector, while forward protons are measured in the CMS-TOTEM precision proton spectrometer. An observed (expected) upper bound on the production cross section of 0.59 (1.14) pb is set at 95% confidence level, for collisions of protons with fractional momentum losses between 2 and 20%

    Search for central exclusive production of top quark pairs in proton-proton collisions at s\sqrt{s} = 13 TeV with tagged protons

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    International audienceA search for the central exclusive production of top quark-antiquark pairs (ttˉ\mathrm{t\bar{t}}) is performed for the first time using proton-tagged events in proton-proton collisions at the LHC at a centre-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 29.4 fb1^{-1}. The ttˉ\mathrm{t\bar{t}} decay products are reconstructed using the central CMS detector, while forward protons are measured in the CMS-TOTEM precision proton spectrometer. An observed (expected) upper bound on the production cross section of 0.59 (1.14) pb is set at 95% confidence level, for collisions of protons with fractional momentum losses between 2 and 20%

    Search for central exclusive production of top quark pairs in proton-proton collisions at s= \sqrt{s} = 13 TeV with tagged protons

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    A search for the central exclusive production of top quark-antiquark pairs (ttˉ \mathrm{t} \bar{\mathrm{t}} ) is performed for the first time using proton-tagged events in proton-proton collisions at the LHC at a centre-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 29.4 fb1 ^{-1} . The ttˉ \mathrm{t} \bar{\mathrm{t}} decay products are reconstructed using the central CMS detector, while forward protons are measured in the CMS-TOTEM precision proton spectrometer. An observed (expected) upper bound on the production cross section of 0.59 (1.14) pb is set at 95% confidence level, for collisions of protons with fractional momentum losses between 2 and 20%.A search for the central exclusive production of top quark-antiquark pairs (ttˉ\mathrm{t\bar{t}}) is performed for the first time using proton-tagged events in proton-proton collisions at the LHC at a centre-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 29.4 fb1^{-1}. The ttˉ\mathrm{t\bar{t}} decay products are reconstructed using the central CMS detector, while forward protons are measured in the CMS-TOTEM precision proton spectrometer. An observed (expected) upper bound on the production cross section of 0.59 (1.14) pb is set at 95% confidence level, for collisions of protons with fractional momentum losses between 2 and 20%
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