Cnidarian
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Pharmacological characterization of cnidarian extracts from the Caribbean Sea: evaluation of anti-snake venom and antitumor properties
Abstract Background: Cnidarians produce toxins, which are composed of different polypeptides that induce pharmacological effects of biotechnological interest, such as antitumor, antiophidic and anti-clotting activities. This study aimed to evaluate toxicological activities and potential as antitumor and antiophidic agents contained in total extracts from fi
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 21/09/2018
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2. Hemolytic, anticancer and antigiardial activity of Palythoa caribaeorum venom
Abstract Background Cnidarian venoms and extracts have shown a broad variety of biological activities including cytotoxic, antibacterial and antitumoral effects. Most of these studied extracts were obtained from sea anemones or jellyfish. The present study aimed to determine the toxic activity and assess the antitumor and antiparasitic potential of Palythoa
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 24/05/2018
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3. Cytolytic and systemic toxic effects induced by the aqueous extract of the fire coral Millepora alcicornis collected in the Mexican Caribbean and detection of two types of cytolisins
AbstractBackground Millepora alcicornis is a branching hydrocoral common throughout the Caribbean Sea. Like other members of this genus, this species is capable of inducing skin eruptions and blisters with severe pain after contact. In the present study, we investigated the toxicity of theM. alcicornis aqueous extract on several animal models. Considering th
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 20/10/2015
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4. Characteristics of hemolytic activity induced by the aqueous extract of the Mexican fire coral Millepora complanata
Background Millepora complanata is a plate-like fire coral common throughout the Caribbean. Contact with this species usually provokes burning pain, erythema and urticariform lesions. Our previous study suggested that the aqueous extract of M. complanata contains non-protein hemolysins that are soluble in water and ethanol. In general, the local damage ind
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 19/12/2014
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5. A anêmona-do-mar Diadumene Stephenson, 1920: um cnidário com potencial invasor na Baía de Paranaguá, PR, Brasil / The sea anemone Diadumene Stephenson, 1920: a cnidarian with an invasion potential in Paranaguá Bay, PR, Brazil
A great number of sea anemones of the genus Diadumene Stephenson, 1920 were found fixated on natural and artificial substrates at the Paranaguá Bay. In 1989, in a study conducted at the same location, the number of anemones of this genus, not identified to a specific level, was much lower. The great abundance of anemones that has currently been observed may
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/09/2011
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6. Taxonomia de pracriontes isolados de cnidários de São Sebastião, SP, Brasil / Taxonomy of prokaryontes isolated from cnidarians of São Sebastião, SP, Brasil
Microorganisms have a key role in the health of cnidarians establishing ecologic relationships, of parasitism to mutualism. The knowledge on the diversity of prokaryotes associated with corals in Brazil is very limited. This is the first study on the taxonomic characterization of heterotrophic bacteria, including putative N2-fixing and specially vibrios isol
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/04/2010
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7. As associações epizóicas de Hydrozoa (Cnidaria: Leptothecata, Anthoathecata e Limnomedusae): I) Estudo faunístico de hidrozoários epizóicos e seus organismos associados; II) Dinâmica de comunidades bentônicas em substratos artificiais em São Sebastião, SP. / The epizoic associations within Hydrozoa (Cnidária: Leptothecata, Anthoatehcata and Limnomedusae): I) Faunistic study of the epizoic hydrozoans and their associated organisms; II) The dinamics of benthic communities on artificial substrates from São Sebastião, SP.
2.1 The associations between animal groups and species of sponges are relatively well known and described in the literature. Of all the cnidarian groups, the most diverse associations with sponges are found among the hydrozoans. In this study, 117 species of epizoic hydroids were found on two classes of sponge substrates (Hexactinellida and Demospongiae). Th
Publicado em: 2007
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8. Estudos ecotoxicológicos da água e do sedimento do rio Corumbataí, SP. / Ecotoxicologic studies of water and sediment in the Corumbataí River, SP, Brazil.
The River Corumbataí possesses regional significance therefore its water has potential to supply the cities of Analândia, Corumbataí, Rio Claro and Piracicaba, in state of São Paulo, Brazil. The consumption for ends of domestic supplying, recreation, irrigation and protection of aquatic life demands that the standards of quality of its water are attended
Publicado em: 2005
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9. Gametogênese e desenvolvimento embrionário de Nausithoe aurea (Scyphozoa, Coronatae) do canal de São Sebastião - SP. / Gametogenesis and embryonic development of Nausithoe aurea (Scyphozoa, Coronatae) from the São Sebastião Channel - SP.
Nausithoe aurea Silveira &Morandini, 1997 é uma espécie metagenética e dióica com fecundação externa. Os oócitos são liberados continuamente (55 dias em laboratório), porém com grandes variações no número a cada dia. No desenvolvimento embrionário a clivagem, após o estágio de 8 células, passa de holoblástica e igual para pseudoespiral. A g
Publicado em: 1999
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10. CnidBase: The Cnidarian Evolutionary Genomics Database
CnidBase, the Cnidarian Evolutionary Genomics Database, is a tool for investigating the evolutionary, developmental and ecological factors that affect gene expression and gene function in cnidarians. In turn, CnidBase will help to illuminate the role of specific genes in shaping cnidarian biodiversity in the present day and in the distant past. CnidBase high
Oxford University Press.
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11. Class-level relationships in the phylum Cnidaria: evidence from mitochondrial genome structure.
The phylogenetic relationships of the Recent cnidarian classes remain one of the classic problems in invertebrate zoology. We survey the structure of the mitochondrial genome in representatives of the four extant cnidarian classes and in the phylum Ctenophora. We find that all anthozoan species tested possess mtDNA in the form of circular molecules, whereas
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12. Precambrian animal diversity: Putative phosphatized embryos from the Doushantuo Formation of China
Putative fossil embryos and larvae from the Precambrian phosphorite rocks of the Doushantuo Formation in Southwest China have been examined in thin section by bright field and polarized light microscopy. Although we cannot completely exclude a nonbiological or nonmetazoan origin, we identified what appear to be modern cnidarian developmental stages, includin
The National Academy of Sciences.