Marine Toxins
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Sequence analysis of the cDNA encoding for SpCTx: a lethal factor from scorpionfish venom ( Scorpaena plumieri )
Abstract Background: Lethal factors are multifunctional oligomeric proteins found in the venomous apparatus of Scorpaeniformes fish. These toxins elicit not only an array of biological responses in vitro but also cardiovascular disorders and strong hemolytic, nociceptive and edematogenic activities in vivo. This work describes the cloning and molecular iden
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 21/09/2018
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2. 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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3. Antiproliferative activity of marine stingray Dasyatis sephenvenom on human cervical carcinoma cell line
AbstractBackgroundVenoms comprise mixtures of numerous bioactive compounds that have a wide range of pharmacologic actions. Toxins from venomous animals have attracted the attention of researchers because of their affinity for primary sites responsible for lethality and their efficacy at extremely low concentrations. The venoms of marine stingrays have not b
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 10/11/2015
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4. Cathepsin B/X is secreted by Echinometra lucunter sea urchin spines, a structure rich in granular cells and toxins
Background Echinometra lucunter is a common American sea urchin responsible for the majority of the marine accidents in Brazil. Although not lethal, these accidents are reported to be extremely painful. Recently, our group described the presence of toxins in its spines that contribute to the pathological reactions. Additionally, we have observed that the E.
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 16/12/2013
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5. Aumento de radicais livres induzidos pelo veneno de Bunodosoma caissarum / Increase of free radicals induced by the venom of Bunodosoma caissarum
A anémona do mar Bunodosoma caissarum possui mais de 40 proteínas diferentes, como mostrado através da eletroforese 2-D, o que pode levar a uma variedade de efeitos biológicos. Foram investigados também alguns parâmetros farmacológicos, onde se pode verificar a capacidade desta toxina em interagir com modelos de homeostase sanguínea, no caso em parti
Publicado em: 2010
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6. Biochemical and biological characterization of toxins in the venom and mucus of the catfish Cathorops spixii. / Caracterização bioquímica e biológica de toxinas presentes na peçonha e no muco do bagre Cathorops spixii.
Of the venomous fish found in Brazil, catfish noteworthy for the number of accidents they cause. The objective of this study was to characterize the toxic compounds present in the venom and mucus. We obtained an average protein intake of 3,1 mg / mL (venom) and 1,4 mg / mL (mucus). The electrophoretic profile of venom and mucus has a few protein bands. Fract
Publicado em: 2009
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7. Análise da expressão de enterolobina em sementes e calos vegetais de Enterolobium contortisiliquum
Cytolytic toxins are produced by a variety of living organisms, particularly bacteria, certain insects, poisonous reptiles and stinging marine invertebrates. Many of these toxins appear to function simply by forming pores in cell membranes, disrupting the permeability barrier and leading eventually to cell death. However, few examples have been studied in pl
Publicado em: 2007
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8. Pseudoalteromonas Bacteria Are Capable of Degrading Paralytic Shellfish Toxins▿ †
Marine bacterial isolates cultured from the digestive tracts of blue mussels (Mytilus edulis) contaminated with paralytic shellfish toxins (PSTs) were screened for the ability to reduce the toxicity of a PST mixture. Seven isolates reduced the overall toxicity of the algal extract by ≥90% within 3 days. These isolates shared at least 99% 16S rRNA gene sequ
American Society for Microbiology (ASM).
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9. Exohemagglutinins: new products of vibrios.
A number of vibrio strains isolated from marine water produced high units of phytohemagglutinin-like agglutinins. Sugar specificity of the hemagglutinins was different from that of the sugar-binding bacterial toxins and that of the sugar-binding pili on the bacterial cell surfaces.
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10. Comparison of putative virulence factors in Aeromonas hydrophila strains isolated from the marine environment and human diarrheal cases in southern Italy.
Aeromonas hydrophila strains isolated from the same geographical region (southern Italy) but from different sources (sea sediments and human diarrhea cases) were characterized for the production of potential virulence determinants, such as production of cytotoxins, cytotonic toxins, hemolysin, and dermonecrotic factors and their capacity to adhere to human i
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11. Microhabitats within Venomous Cone Snails Contain Diverse Actinobacteria▿ †
Actinomycetes can be symbionts in diverse organisms, including both plants and animals. Some actinomycetes benefit their host by producing small molecule secondary metabolites; the resulting symbioses are often developmentally complex. Actinomycetes associated with three cone snails were studied. Cone snails are venomous tropical marine gastropods which have
American Society for Microbiology (ASM).
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12. Biotransformations of Paralytic Shellfish Toxins by Bacteria Isolated from Bivalve Molluscs
Due to the possibility that bacteria could be involved in the clearance of paralytic shellfish toxins (PST) from bivalve molluscs, investigations into which, if any, bacteria were able to grow at the expense of PST focused on several common shellfish species. These species were blue mussels, oysters, razor fish, cockles, and queen and king scallops. Bacteria
American Society for Microbiology.