Fish Venom
Mostrando 1-11 de 11 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. A review on the Scorpaena plumieri fish venom and its bioactive compounds
Abstract The most poisonous fish species found along the Brazilian coast is the spotted scorpionfish Scorpaena plumieri. Though hardly ever life-threatening to humans, envenomation by S. plumieri can be quite hazardous, provoking extreme pain and imposing significant socioeconomic costs, as the victims may require days to weeks to recover from their injuries
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 19/01/2017
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3. Thalassophryne nattereri fish venom: from the envenoming to the understanding of the immune system
Thalassophryne nattereri (niquim) is a venomous fish found off North and Northeast coast of Brazil, where it is known by the severity of the accidents involving humans. This review article is divided into four topics. The first one provides a brief description of the animal biology and its distribution off Brazilian coastal waters, the venom apparatus, signs
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 02/09/2014
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4. Modulation of macrophage function by Nattectin: a C-type lectin from Thalassophryne nattereri fish venom. / Modulação da função de macrófagos pela nattectina: uma lectina tipo C do veneno de Thalassophryne nattereri.
A Nattectina é uma toxina isolada do veneno de Thalassophryne nattereri que possui homologia com lectinas tipo C. Este estudo consistiu em avaliar a ação da Nattectina sobre as funções de macrófagos e a influência de citocinas Th1/Th2 nessa ativação. Nossos resultados mostram que a Nattectina induziu o aumento da expressão de moléculas coestimulad
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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5. Acutolysin C, a weak hemorrhagic toxin from the venom of Agkistrodon acutus with leucoagglutination activity
The properties and agglutination activity of acutolysin C, a hemorrhagic metalloproteinase obtained from Agkistrodon acutus venom, were studied herein. Acutolysin C is a basic glycoprotein consisting of a single polypeptide chain with a molecular weight of 23.1 kDa and pI 8.7, containing one Zn2+ and one Ca²+ per molecule. It possesses caseinolytic, weak le
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2011
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6. Papel dos receptores inatos TLR na formação de memória humoral e linfócitos B de longa vida: ação das proteases natterinas, toxinas majoritárias do veneno de Thalassophryne nattereri. / Role of innate TLR receptors in formation of humoral memory and long-life lymphocytes B: action of natterins proteases, majority toxins of Thalassophryne nattereri venom.
A contribuição de células B para a memória imunológica se dá por duas distintas populações: células B de memória e células produtoras de anticorpos de longa vida (ASC). A inter-relação entre estas células bem como os mecanismos envolvidos para a manutenção destas tem sido pouco entendida. O veneno de Thalassophryne nattereri tem se mostrado c
Publicado em: 2010
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7. Peptídeos antimicrobianos: síntese, ensaios biológicos, estudos termodinâmicos e análise estrutural por RMN em meios biomiméticos
Many organisms employ noxious chemicals (e.g., amines, steroid derivatives, alkaloids and peptides) to defend themselves against predators and pathogenic microrganisms. Among these chemical agents stand out peptides that can be found in a wide variety of organisms including bacteria, fungi, plants, insects, fish, amphibians,arachnids and mammals. The vast ma
Publicado em: 2010
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8. 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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9. Antivenom action on renal effects induced by Thalassophryne nattereri venom
Thalassophryne nattereri (niquim) is a venomous fish responsible for numerous accidents involving fishermen in northern and northeastern Brazil. The aim of the present investigation was to evaluate the action of antivenom on renal effects caused by Thalassophryne nattereri venom. Isolated kidneys of Wistar rats were perfused with a previously dialyzed Krebs-
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2009
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10. Papel das citocinas IL-5 e IL-17A na diferenciação de células produtoras de anticorpos de vida longa (ASC) induzida pelo veneno do peixe Thalassophryne nattereri / The role of IL-5 and IL-17A in the differentiation of long-lived antibody secreting cells (ASC) induced by Thalassophryne nattereri fish venom
O veneno do T.nattereri induz uma resposta de memória com a diferenciação de células B B220neg, indicativo de células produtoras de anticorpos de vida longa (ASC). Para avaliar o efeito do veneno na diferenciação de ASCs, camundongos BALB/c foram imunizados e sacrificados nos dias 21, 28, 48, 74 e 120 para avaliação de anticorpos plasmáticos e cél
Publicado em: 2009
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11. The secondary structure of oocyte and somatic 5S ribosomal RNAs of the fish Misgurnus fossilis L. from nuclease hydrolyses and chemical modification data.
We have studied the accessibility of 5'- 32P labeled oocyte and somatic 5S rRNAs from the fish Misgurnus fossilis L. to S1, T1 and cobra venom nucleases and have found that the cleavage sites of 5S rRNAs closely related in primary structures differ in these molecules. The data of nuclease hydrolyses revealed the existence of two conformers corresponding to r