80 resultados para Sintese de farmacos
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Within the Wittgensteinian approach, the ideal of exactness, disconnected from concrete situations of language use, does not make any sense. Such an approach takes into account every and any kind of intersubjective communication, inasmuch as it is based on a previous agreement concerning the use of language and the interpretation of the world linked to it. This paper, throughout its three parts, seeks to understand this agreement, and evaluates whether or not philosophy plays a role in relation to it. To start with, the obstacles to such an agreement will be considered, namely, solipsism and private, subjective language. In the following stage, the intention is to indicate that the rupture from the subjectivist conception of language allows Wittgenstein to visualize another subject, the one incorporated by the community. From then on, the question is to verify whether reflectivity is possible in the ambit of a linguistic community or not, since the objectivity of concepts is not sought within knowledge, but within forms of life. In the third and last part, we will point to the language game metaphor
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Química - IQ
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Pós-graduação em Química - IQ
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Pós-graduação em Ciência dos Materiais - FEIS
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Pós-graduação em Química - IQ
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Pós-graduação em Química - IQ
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Pós-graduação em Zootecnia - FMVZ
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Pós-graduação em Biotecnologia - IQ
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Pós-graduação em Ginecologia, Obstetrícia e Mastologia - FMB
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Pós-graduação em Biotecnologia - IQ
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N-4-Phenyl 2-acetylpyridine thiosemicarbazone (H2Ac4Ph; N-(phenyl)-2-(1-(pyridin-2-yl)ethylidene) hydrazinecarbothioamide) and its N-4-ortho-, -meta- and -para-fluorophenyl (H2Ac4oFPh, H2Ac4mFPh, H2Ac4pFPh), N-4-ortho-, -meta- and -para-chlorophenyl (H2Ac4oClPh, H2Ac4mClPh, H2Ac4pClPh), N-4-ortho-, -meta- and -para-iodophenyl (H2Ac4oIPh, H2Ac4mIPh, H2Ac4pIPh) and N-4-ortho-, -meta- and -para-nitrophenyl (H2Ac4oNO(2)Ph, H2Ac4mNO(2)Ph, H2Ac4pNO(2)Ph) derivatives were assayed for their cytotoxicity against human malignant breast (MCF-7) and glioma (T98G and U87) cells. The compounds were highly cytotoxic against the three cell lineages (IC50: MCF-7, 52-0.16 nM; T98G, 140-1.0 nM; U87, 160-1.4 nM). All tested thiosemicarbazones were more cytotoxic than etoposide and did not present any haemolytic activity at up to 10(-5) M. The compounds were able to induce programmed cell death. H2Ac4pClPh partially inhibited tubulin assembly at high concentrations and induced cellular microtubule disorganization. (C) 2012 Elsevier Ltd. All rights reserved.