• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1
  • 1
  • Tagged with
  • 2
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A New Approach to 3,4-Dihydrobenz[g]isoquinoline Skeleton

Hung, Ta-Chao 22 July 2003 (has links)
A new approach to isoquinoline skeleton, we use this way to make many isoquinoline skeleton compound, and we hope this method could apply on natural products and photoelectric materials in the future.
2

AvaliaÃÃo da Atividade CitotÃxica In Vitro de uma Benzoisoquinolina Isolada de Mitracarpus baturitensis SUCRE (Rubiaceae) / Evaluation of In Vitro Cytotoxic Activity of an Isolated from Benzoisoquinolina Mitracarpus baturitensis SUCRE (Rubiaceae)

Igor da Silva Bomfim 15 March 2013 (has links)
FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico / FundaÃÃo de Amparo à Pesquisa do Estado do Cearà / As quinonas representam uma das mais importantes classes de compostos utilizados na clÃnica oncolÃgica, suas molÃculas sÃo de ocorrÃncia natural e distribuem-se em trÃs grupos (antraquinonas, benzoquinonas e naftoquinonas). Neste trabalho foi estudado a atividade citotÃxica e mecanismos de aÃÃo anticÃncer de um composto pertencente ao grupo benzoquinona, denominado FR42 (benz[g]isoquinolina-5,10-diona) em cÃlulas de glioblastoma humano (SF-295). Primeiramente realizou-se o ensaio de citotoxicidade em um painel de 4 linhagens de cÃlulas cancerÃgenas, sendo que a FR42 apresentou elevada toxicidade para todas as cÃlulas cancerÃgenas testadas, exibiu IC50 entre 1,70-2,45 μM. Com relaÃÃo ao ensaio de citotoxicidade realizado em cÃlulas normais, mostrou IC50 entre 12,18-23,27 μM, houve ligeira seletividade para cÃlulas cancerÃgenas. Estudos em citometria de fluxo realizados em cÃlulas SF-295 sugerem que o composto FR42 na maior concentraÃÃo testada, induz morte celular por apoptose, evidenciado pela fragmentaÃÃo do DNA e despolarizaÃÃo da membrana mitocondrial. O composto FR42 na menor concentraÃÃo testada 2 μM apresentou interferÃncia no ciclo celular, promovendo acÃmulo de cÃlulas na fase G2/M. Os resultados indicam que o composto FR42 possui notÃvel toxicidade para cÃlulas tumorais. / Quinones represent one of the most important classes of compounds used in clinical oncology, and they are natural products easily found in the nature. They have been distributed in three groups (anthraquinones, benzoquinones and naphthoquinones). This study investigated the cytotoxic activity and anticancer mechanism of action of a compound belonging to the benzoquinone group, called FR42 (benz [g] isoquinoline-5 ,10-dione) in human glioblastoma cells (SF-295). First of all, it was performed the cytotoxicity assay on a panel of four cancer cell lines, and the FR42 showed high toxicity to all cancer cells tested, exhibited IC50 between 1.70 to 2.45 mM. In order to the cytotoxicity assay performed on normal cells showed IC50 between 12.18 to 23.27 mM, there was a slight selectivity for tumor cells. Flow cytometry studies performed in SF-295 cells has been suggested that the compound FR42 in the highest concentration tested, induced cell death by apoptosis as evidenced by DNA fragmentation and depolarization of the mitochondrial membrane. FR42 lowest concentration tested (2 mM) presented interference in the cell cycle promoting arresting of cells in G2 / M. The results has been indicated the a notable toxicity from FR42 in cancer cells lines.

Page generated in 0.0506 seconds