Marine Sponge
Mostrando 13-24 de 63 artigos, teses e dissertações.
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13. Antifouling effect of bioactive compounds from marine sponge Acanthella elongata and different species of bacterial film on larval attachment of Balanus amphitrite (cirripedia, crustacea)
The antifouling activity of bioactive compounds from marine sponge Acanthella elongata (Dendy) and five species of bacterial biofilm were studied. Larvae of Balanus amphitrite (Cyprids and nauplii) were used to monitor the settlement inhibition and the extent to which inhibition was due to toxicity. The crude extract and partially purified fractions of A.elo
Brazilian Archives of Biology and Technology. Publicado em: 2012-06
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14. Antifoulant property of the marine sponge Hymeniacidon heliophila (Demospongiae: Halichondrida)
Brazilian Journal of Oceanography. Publicado em: 2012-06
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15. Antiparasitic bromotyrosine derivatives from the Caribbean marine sponge Aiolochroia crassa
Six bromotyrosine-derived compounds were isolated from the Caribbean marine sponge Aiolochroia crassa: 3-bromo-5-hydroxy-O-methyltyrosine (1), 3-bromo-N,N,N-trimethyltyrosinium (2), 3-bromo-N,N,N,O-tetramethyltyrosinium (3), 3,5-dibromo-N,N,N-trimethyltyrosinium (4), 3,5-dibromo-N,N,N,O-tetramethyltyrosinium (5), and aeroplysinin-1 (6). Structural determinat
Química Nova. Publicado em: 2012
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16. Aplysfistularine: a novel dibromotyrosine derivative isolated from Aplysina fistularis
The new dibromotyrosine derivative 3,5-dibromo-4-[3'dimethylamonium]propoxyphenyl]-N,N,N-trimethylethanamonium, here referred to as aplysfistularine (1), was isolated from the marine sponge Aplysina fistularis along with 2-(3,5-dibromo-4methoxyphenyl)-N,N,N-trimethylethanamonium (2), aplysterol (3) and 24,28-didehydroaplysterol (4). Their identification was
Quím. Nova. Publicado em: 2012
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17. Indução de morte celular em células de adenocarcinoma cervical humano (HeLa) pela lectina da esponja Cinachyrella apion (CaL)
O câncer é um termo utilizado para representar um conjunto de mais de 100 patologias, incluindo tumores malignos de diferentes localizações. As neoplasias malignas constituem a segunda causa de morte na população brasileira, representando aproximadamente 17% dos óbitos de causa conhecida. Estratégias que induzem à diferenciação têm tido sucesso l
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/07/2011
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18. Isolation and cultivation of fungal strains from in vitro cell cultures of two marine sponges (Porifera: Halichondrida and Haplosclerida)
Despite the large number of reports describing sponge-microbe associations, limited knowledge is available about associated fungi and their relationships with the hosts. In this work, specific fungal strains were obtained directly from in vitro sponge cell cultures (primmorphs) and single sponge cells (cytospins) and compared with those obtained from whole t
Braz. J. Microbiol.. Publicado em: 2011-12
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19. Antiherpes screening of marine organisms from Colombian Caribbean Sea
The exploration of marine environment represents a promising strategy in the search for new active antiviral compounds. The isolation and characterization of the nucleosides spongothymidine and spongouridine from the sponge Cryptotethia crypta used as models for the synthesis of ara-A (vidarabine), that has been used therapeutically against herpetic encephal
Revista Brasileira de Farmacognosia. Publicado em: 03/06/2011
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20. Bromopyrrole alkaloids from the caribbean sponge Agelas cerebrum
Bioguided fractionation of Agelas cerebrum crude extract resulted in isolation of four bromopyrrole and four bromopyrrole aminoimidazole alkaloids, identified as 5-bromopyrrole-2-carboxylic acid (1), 4-bromopyrrole-2-carboxylic acid (2), 3,4-bromopyrrole-2-carboxylic acid (3), 4,5-bromopyrrole-2-carboxylic acid (4), oroidin (5), bromoageliferin (6), dibromoa
Química Nova. Publicado em: 2011
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21. The syntheses of the marine metabolites 3-bromoverongiaquinol and 5-monobromocavernicolin
An efficient synthesis of the marine metabolite 3-bromoverongiaquinol (1) and the first total synthesis of 5-monobromocavernicolin (2), both isolated from the marine sponge Aplysina cavernicola, have been described based on the 1,2 addition of the lithium enolate of N,O-bistrimethylsilylacetamide (BSA, 4) to 1,4-benzoquinone (3). Bromination and purification
Química Nova. Publicado em: 2010
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22. Estudos químicos e microbiológicos de microrganismos associados à esponja marinha Dragmacidon reticulatum, objetivando o isolamento de metabólitos secundários bioativos
Fungi are known as one of the most promising sources of unprecedent bioactive compounds, however, marine derived fungi are still very poorly studied. These microorganisms present high percentages of active metabolites and they are commonly isolated from marine invertebrates. At this study, the associated microbiota of the marine sponge Dragmacidon reticulatu
Publicado em: 2010
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23. Marine Pseudomonas putida: a potential source of antimicrobial substances against antibiotic-resistant bacteria
Bacteria isolated from marine sponges found off the coast of Rio de Janeiro, Brazil, were screened for the production of antimicrobial substances. We report a new Pseudomonas putida strain (designated P. putida Mm3) isolated from the sponge Mycale microsigmatosa that produces a powerful antimicrobial substance active against multidrug-resistant bacteria. P.
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-08
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24. Bioactivities of extracts from the marine sponge Halichondria panicea
In the present study, we screened the biological activity of extracts from the marine sponge Halichondria panicea collected in the Arabian Sea. Crude toxin was obtained by methanol, chloroform-methanol (2:1) and aqueous extraction. Subsequently, the protein concentration of each crude extract was determined. The impact of both sponge methanolic and aqueous e
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2009