Marine Sponge
Mostrando 1-12 de 63 artigos, teses e dissertações.
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1. Biotechnological Properties of Sponges from Northeast Brazil: Cliona varians as a Biocatalyst for Enantioselective Reduction of Carbonyl Compounds
To research the potential ability of whole marine sponges to act as biocatalysts, this paper describes for the first time the employment of whole Cliona varians sponge in the stereoselective reduction of prochiral a-keto esters and isatin to the corresponding chiral alcohols. The addition of D-fructose, D-glucose or sucrose remarkably increased the conversio
J. Braz. Chem. Soc.. Publicado em: 2019-01
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2. CHEMICAL CONSTITUENTS DERIVED FROM THE CANARIES MARINE SPONGE Myxilla sp.
Stigmasterols, ceramides, including ceramide-1-phosphates and pyrimidines were identified in an ethanol extract of the marine sponge Myxilla sp. The compounds were identified by MS and 1D- and 2D-NMR techniques. A simple method based on an ultra-high-performance liquid chromatography coupled with tandem mass spectrometry was developed to investigate the prod
Quím. Nova. Publicado em: 2018-03
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3. The Influence of Brazilian Biodiversity on Searching for Human Use Pharmaceuticals
This relatively short review will cover the history of some potential drug entities whose beginnings were from Brazilian flora and fauna that led to scientific findings many years later that could not even have been thought of at the time of their initial discovery. The first two are the discoveries of the effects of peptidic toxins from the highly poisonous
J. Braz. Chem. Soc.. Publicado em: 2017-03
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4. Antibiotic resistance genes detected in the marine sponge Petromica citrina from Brazilian coast
ABSTRACT Although antibiotic-resistant pathogens pose a significant threat to human health, the environmental reservoirs of the resistance determinants are still poorly understood. This study reports the detection of resistance genes (ermB, mecA, mupA, qnrA, qnrB and tetL) to antibiotics among certain culturable and unculturable bacteria associated with the
Braz. J. Microbiol.. Publicado em: 2016-09
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5. Antimicrobial (including antimollicutes), antioxidant and anticholinesterase activities of Brazilian and Spanish marine organisms – evaluation of extracts and pure compounds
Abstract This work describes the antimicrobial, antioxidant and anticholinesterase activities in vitro of organic extracts from fourteen seaweeds, eleven sponges, two ascidians, one bryozoan, and one sea anemone species collected along the Brazilian and Spanish coast, as well as the isolation of the diterpene (4R, 9S, 14S)-4α-acetoxy-9β,14α-dihydroxydolas
Rev. bras. farmacogn.. Publicado em: 2015-12
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6. Metabolite variability in Caribbean sponges of the genus Aplysina
Abstract Sponges of the genus Aplysina are among the most common benthic animals on reefs of the Caribbean, and display a wide diversity of morphologies and colors. Tissues of these sponges lack mineralized skeletal elements, but contain a dense spongin skeleton and an elaborate series of tyrosine-derived brominated alkaloid metabolites that function as chem
Rev. bras. farmacogn.. Publicado em: 2015-12
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7. Marine organisms as source of extracts to disrupt bacterial communication: bioguided isolation and identification of quorum sensing inhibitors from Ircinia felix
AbstractIn this study, 39 extracts from marine organisms were evaluated as quorum sensing inhibitors, collected in the Colombian Caribbean Sea and the Brazilian Coast including 26 sponges, seven soft corals, five algae and one zooanthid. The results showed that crude extracts from the soft coral Eunicea laciniata, and the sponges Svenzea tubulosa, Ircinia fe
Rev. bras. farmacogn.. Publicado em: 2015-06
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8. Hemagglutinating/Hemolytic activities in extracts of marine invertebrates from the Brazilian coast and isolation of two lectins from the marine sponge Cliona varians and the sea cucumber Holothuria grisea
Vinte espécies de invertebrados marinhos, coletados na costa brasileira, foram avaliados quanto à presença de atividade hemaglutinante/hemolítica. Em pelo menos doze espécies testadas, a atividade hemaglutinante foi diferencial para diferentes grupos sanguíneos, sugerindo a presença de lectinas. Extratos de quatro espécies apresentaram atividade hemo
An. Acad. Bras. Ciênc.. Publicado em: 08/05/2015
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9. Cyclodipeptides from metagenomic library of a japanese marine sponge
A metagenômica independente de cultura é um meio atraente e promissor para explorar pequenas moléculas bioativas únicas de esponjas marinhas que abrigam micro-organismos simbiontes não cultiváveis. Foi realizada uma triagem funcional da biblioteca metagenômica da esponja marinha japonesa Discodermia calyx. O fracionamento bio-guiado do extrato cultiva
J. Braz. Chem. Soc.. Publicado em: 2013-12
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10. Diversity of the candidate phylum Poribacteria in the marine sponge Aplysina fulva
Poribacterial clone libraries constructed for Aplysina fulva sponge specimens were analysed with respect to diversity and phylogeny. Results imply the coexistence of several, prevalently "intraspecific" poribacterial genotypes in a single sponge host, and suggest quantitative analysis as a desirable approach in studies of the diversity and distribution of po
Braz. J. Microbiol.. Publicado em: 2013
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11. Caracterização da diversidade de fungos filamentosos associados a esponjas marinhas e avaliação da produção de lacase = : Diversity of filamentous fungi associated with marine sponges and evaluation of laccase production / Diversity of filamentous fungi associated with marine sponges and evaluation of laccase production
The ocean represents a promissing habitat in the search for new microorganisms, which may have the ability to produce enzymes of industrial interests different from that produced by their terrestrial counterparts. In this context, two samples of the marine sponge Dragmacidon reticulatum were collected on northern coast of São Paulo State, aiming at the char
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/09/2012
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12. Degradação de HPAs e produção de enzimas ligninolíticas por fungos basidiomicetos derivados de esponjas marinhas / PAHs degradation and ligninolytic enzymes production by marine-sponge-derived basidiomycetes fungi
Hidrocarbonetos Policíclicos Aromáticos (HPAs) são poluentes ambientais oriundos de fontes naturais e antropogênicas, caracterizados por suas propriedades mutagênicas e carcinogênicas e persistência no ambiente. Fungos basidiomicetos de degradação branca têm sido extensivamente estudados devido à sua habilidade em degradar uma ampla variedade de c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2012