23 research outputs found

    Antioxidant, Antinociceptive, and Anti-inflammatory Properties of the Ethanolic Extract of Combretum duarteanum in Rodents

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    This is a copy of an article published in the Journal of Medicinal Food© 2011 - copyright Mary Ann Liebert, Inc.; Journal of Medicinal Food is available online at: http://online.liebertpub.comThe antioxidant, antinociceptive, and anti-inflammatory activities of the ethanolic extract from leaves of Combretum duarteanum (EEC) were assessed in rodents through in vitro tests. The antioxidant activity was investigated by using thiobarbituric acid reactive species (TBARS), hydroxyl radical–scavenging, and scavenging activity of nitric oxide assays. The antinociceptive activity was investigated by using acetic acid–induced writhing, formalin, and hot-plate tests in mice. The anti-inflammatory activity was assessed in rats by using the carrageenan-induced hind-paw edema test and arachidonic acid–induced paw edema test. EEC possesses a strong antioxidant potential according to the TBARS, nitric oxide, and hydroxyl radical–scavenging assays; it also presented scavenger activity in all in vitro tests. After intraperitoneal injection, EEC (100, 200, and 400 mg/kg) significantly reduced the number of writhes (38.1%, 90.6%, and 97.8%, respectively) in a writhing test and the number of paw licks during phase 1 (30.5% and 69.5%, higher doses) and phase 2 (38.1%, 90.6%, and 97.8%, all doses) of a formalin test when compared with the control group. Naloxone (1.5 mg/kg, intraperito- neally) antagonized the antinociceptive action of EEC (400 mg/kg), and this finding suggests participation of the opioid system. Administration of 200 and 400 mg/kg (intraperitoneally) of EEC exhibited an anti-inflammatory activity in the carrageenin test, which was based on interference with prostaglandin synthesis. This finding was confirmed by the arachidonic acid test. Together, these results indicate that properties of EEC might be further explored in the search for newer tools to treat painful inflammatory conditions, including those related to pro-oxidant states

    I Diretriz brasileira de cardio-oncologia pediátrica da Sociedade Brasileira de Cardiologia

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    Sociedade Brasileira de Oncologia PediátricaUniversidade Federal de São Paulo (UNIFESP) Instituto de Oncologia Pediátrica GRAACCUniversidade Federal de São Paulo (UNIFESP)Universidade de São Paulo Faculdade de Medicina Instituto do Coração do Hospital das ClínicasUniversidade Federal do Rio Grande do Sul Hospital de Clínicas de Porto AlegreInstituto Materno-Infantil de PernambucoHospital de Base de BrasíliaUniversidade de Pernambuco Hospital Universitário Oswaldo CruzHospital A.C. CamargoHospital do CoraçãoSociedade Brasileira de Cardiologia Departamento de Cardiopatias Congênitas e Cardiologia PediátricaInstituto Nacional de CâncerHospital Pequeno PríncipeSanta Casa de Misericórdia de São PauloInstituto do Câncer do Estado de São PauloUniversidade Federal de São Paulo (UNIFESP) Departamento de PatologiaHospital Infantil Joana de GusmãoUNIFESP, Instituto de Oncologia Pediátrica GRAACCUNIFESP, Depto. de PatologiaSciEL

    SARS-CoV-2 introductions and early dynamics of the epidemic in Portugal

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    Genomic surveillance of SARS-CoV-2 in Portugal was rapidly implemented by the National Institute of Health in the early stages of the COVID-19 epidemic, in collaboration with more than 50 laboratories distributed nationwide. Methods By applying recent phylodynamic models that allow integration of individual-based travel history, we reconstructed and characterized the spatio-temporal dynamics of SARSCoV-2 introductions and early dissemination in Portugal. Results We detected at least 277 independent SARS-CoV-2 introductions, mostly from European countries (namely the United Kingdom, Spain, France, Italy, and Switzerland), which were consistent with the countries with the highest connectivity with Portugal. Although most introductions were estimated to have occurred during early March 2020, it is likely that SARS-CoV-2 was silently circulating in Portugal throughout February, before the first cases were confirmed. Conclusions Here we conclude that the earlier implementation of measures could have minimized the number of introductions and subsequent virus expansion in Portugal. This study lays the foundation for genomic epidemiology of SARS-CoV-2 in Portugal, and highlights the need for systematic and geographically-representative genomic surveillance.We gratefully acknowledge to Sara Hill and Nuno Faria (University of Oxford) and Joshua Quick and Nick Loman (University of Birmingham) for kindly providing us with the initial sets of Artic Network primers for NGS; Rafael Mamede (MRamirez team, IMM, Lisbon) for developing and sharing a bioinformatics script for sequence curation (https://github.com/rfm-targa/BioinfUtils); Philippe Lemey (KU Leuven) for providing guidance on the implementation of the phylodynamic models; Joshua L. Cherry (National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health) for providing guidance with the subsampling strategies; and all authors, originating and submitting laboratories who have contributed genome data on GISAID (https://www.gisaid.org/) on which part of this research is based. The opinions expressed in this article are those of the authors and do not reflect the view of the National Institutes of Health, the Department of Health and Human Services, or the United States government. This study is co-funded by Fundação para a Ciência e Tecnologia and Agência de Investigação Clínica e Inovação Biomédica (234_596874175) on behalf of the Research 4 COVID-19 call. Some infrastructural resources used in this study come from the GenomePT project (POCI-01-0145-FEDER-022184), supported by COMPETE 2020 - Operational Programme for Competitiveness and Internationalisation (POCI), Lisboa Portugal Regional Operational Programme (Lisboa2020), Algarve Portugal Regional Operational Programme (CRESC Algarve2020), under the PORTUGAL 2020 Partnership Agreement, through the European Regional Development Fund (ERDF), and by Fundação para a Ciência e a Tecnologia (FCT).info:eu-repo/semantics/publishedVersio

    Mielomeningocele e anomalias associadas: uma série de casos e revisão sistemática

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    A mielomeningocele é uma malformação congênita grave do sistema nervoso central, representando um dos tipos mais complexos de defeitos do tubo neural. A condição é marcada pela exposição das meninges e, em alguns casos, da medula espinhal, através de uma abertura na coluna vertebral, desafiando tanto o prognóstico do paciente quanto as estratégias de tratamento. O presente estudo visa explorar os avanços recentes no diagnóstico, intervenções cirúrgicas e desfechos neurológicos associados à mielomeningocele, com foco particular na eficácia e segurança das abordagens atuais. Para isso, foi realizada uma revisão sistemática da literatura de 2016 a 2024 nas bases de dados PubMed (Medline), Cochrane Library e SciELO, aplicando critérios de inclusão e exclusão rigorosos para selecionar estudos que abordassem esses aspectos. Três estudos chave foram analisados, destacando-se pelas técnicas de diagnóstico antenatal, pela utilização de intervenções cirúrgicas inovadoras, como o fechamento fetal, e pelos cuidados pós-operatórios visando melhorias nos desfechos neurológicos. Os resultados indicam uma tendência positiva na melhoria da qualidade de vida dos pacientes, com avanços significativos no controle e na prevenção de complicações a longo prazo. No entanto, foi observada a necessidade de uma abordagem multidisciplinar no tratamento, integrando cuidados neurocirúrgicos, ortopédicos e reabilitativos. A mielomeningocele, apesar dos desafios, tem testemunhado progressos notáveis nas últimas décadas, sugerindo um futuro mais promissor para os pacientes afetados. Ainda assim, são necessários mais estudos para consolidar essas abordagens e otimizar as estratégias de tratamento na prática clínica

    Lidar Observations in South America. Part I - Mesosphere and Stratosphere

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    South America covers a large area of the globe and plays a fundamental function in its climate change, geographical features, and natural resources. However, it still is a developing area, and natural resource management and energy production are far from a sustainable framework, impacting the air quality of the area and needs much improvement in monitoring. There are significant activities regarding laser remote sensing of the atmosphere at different levels for different purposes. Among these activities, we can mention the mesospheric probing of sodium measurements and stratospheric monitoring of ozone, and the study of wind and gravity waves. Some of these activities are long-lasting and count on the support from the Latin American Lidar Network (LALINET). We intend to pinpoint the most significant scientific achievements and show the potential of carrying out remote sensing activities in the continent and show its correlations with other earth science connections and synergies. In Part I of this chapter, we will present an overview and significant results of lidar observations in the mesosphere and stratosphere. Part II will be dedicated to tropospheric observations

    ECONOMICAL AND FINANCIAL ANALYSIS OF AVIARIES FOR THE INTEGRATION OF BROILERS UNDER CONDITIONS OF RISK

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    Financial investment projects are characterized by uncertainties. When quantified, these will determine the probability of their occurrence and the condition of risk. This information might be analyzed via simulation of Monte Carlo Method, which will establish the level of associated risk. To understand the financial risks of broiler production in integration system, cash flow models for aviaries were formulated with different technological levels. Using deterministic techniques, the value of the main economic viability indicators were calculated, which were incorporated to the risk through a probabilistic model of pseudo-random numbers, generated with Monte Carlo Method. The uncertainties associated to financial projects show that broiler production in different integration systems is economically viable. However, the best financial return and smallest risk are obtained with an aviary which contains low technological level and the least financial investment
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