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Browsing by Author "Oliveira, Catarina"

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  • Avaliação do impacto das abordagens bottom-up e top-down nas atividades da vida diária em pessoas com neglect – revisão sistemática
    Publication . Rosa, Marlene; Vieira, Andreia; Novo Bártolo, Marisa; Martins, Ana Rita; Oliveira, Catarina; Silva, Cândida
    RESUMO | INTRODUÇÃO: Atualmente não existe um consenso entre quais as caraterísticas das abordagens (bottom-up ou top-down) mais eficazes na reabilitação das Atividades da Vida Diária (AVDs) em pessoas com Síndrome de Neglect (SN). OBJETIVO: Caracterizar as abordagens (bottom-up ou top-down) e o seu impacto nas AVDs em adultos e idosos com SN. MÉTODOS: Esta revisão sistemática foi realizada de acordo com a recomendação PRISMA - Preferred Reporting Items for Systematic Reviews and Meta-Analyses. A pesquisa bibliográfica foi realizada nas bases de dados PubMed, Web of Science, PEDro e Cochrane. Foram considerados estudos experimentais em que pelo menos uma técnica das abordagens bottom-up e top-down fosse utilizada. A ferramenta Joanna Briggs Institute Critical Appraisal Checklist for RCTs foi utilizada para avaliar a qualidade metodológica dos estudos. Foi usada a seguinte combinação de palavras chave: Neglect Syndrome OR Unilateral Syndrome OR Neglect (…) AND Activities of Daily Living OR Daily (…) AND Treatment OR Intervention OR Technique (…). RESULTADOS: Foram incluídos 16 estudos, dos quais 9 incluem técnicas de abordagem bottom-up, 6 incluem técnicas de abordagem top-down e 1 artigo inclui técnicas das duas abordagens. As técnicas da abordagem bottom-up que aumentaram a independência nas AVDs foram Visuomotor Feedback Training, Smooth Pursuit Eye Movement Training e a combinação de Eye Patching com Constraint-induced Therapy. Na abordagem top-down as técnicas com os mesmos resultados foram Visual Scanning, Mental Practice, Continuous Theta Burst Stimulation e Transcranial Direct Current Stimulation. CONCLUSÃO: As abordagens bottom-up e top-down aumentam a independência nas AVDs e cada uma contém técnicas com significativo impacto positivo, como Visuomotor Feedback Training e Continuous Theta Burst Stimulation. O presente trabalho permitiu uma análise crítica à classificação das abordagens em bottom-up e top-down, uma vez que não são sensíveis à distinção dos mecanismos de reabilitação envolvidos.
    2020-11-27Journal article Open access Show more
  • Dévoilement des liens transnationaux des migrants chinois au Portugal, Oficina do CES nº 241
    Publication . Marques, José Carlos; Góis, Pedro; Oliveira, Catarina
    2005Other Open access Show more
  • Employment Analytical Study for Portugal
    Publication . Dias, Bruno; Oliveira, Catarina; Marques, José Carlos; Góis, Pedro
    2003Journal article Open access Show more
  • Proactive response to tackle the threat of emerging drugs: synthesis and toxicity evaluation of new cathinones
    Publication . Gaspar, Helena; Bronze, Soraia; Oliveira, Catarina; Victor, Bruno L.; Machuqueiro, Miguel; Pacheco, Rita; Caldeira, Maria João; Santos, Susana
    The emergence of potentially dangerous new psychoactive substances (NPS) imposes enormous challenges on forensic laboratories regarding their rapid and unambiguous identification. Access to comprehensive databases is essential for a quick characterization of these substances, allowing them to be categorized according to national and international legislations. In this work, it is reported the synthesis and structural characterization by NMR and MS of a library encompassing 21 cathinones, 4 of which are not yet reported in the literature, but with structural characteristics that make them a target for clandestine laboratories. This in-house library will be an important tool accessible to forensic laboratories, for the quick identification of seized NPS. The in vitro cytotoxicity of all cathinones was assessed in HepG2 cells, to have a preliminary but effective indication of their human hepatotoxicity potential. The two new cathinones DMB (8) and DMP (9) were the more cytotoxic, followed by the already seized mephedrone (2), 3,4-DMMC (3), 4-MDMC (7), NEB (12) with EC50 values ranging from 0.81 mM for (3) to 1.28 mM for (2). Results suggest an increase of cytotoxicity with the increase of the chain length of the acyl moiety and with the substitution (with one or two methyl groups) in the aromatic ring. The nature of the amine moiety seems to play only a minor role in the cytotoxic effect. Molecular dynamics simulations were performed to evaluate the molecular details related with the observed cytotoxicities. Although these studies indicated that cathinones are able to cross lipid bilayers with relative ease, when in their neutral forms, it was observed only a partial correlation between lipophilicity and cytotoxicity, indicating that membrane trafficking may not be the only key factor influencing the bioactivity of these compounds. This work is a valuable contribution to the forensic science field since a quick identification of novel cathinones is urgent to match their rapid increase in the market.
    2018Journal article Restricted access Show more