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| Registros recuperados: 12 | |
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| Zeni,A. L. B.; Becker,A.; Krug,M.; Albuquerque,C. A. C.. |
| Snake venom is characterized by hemorrhagic, coagulant, proteolytic and myotoxic activities which in Bothrops jaracussu venom are related to intraspecific variations. In the present study, female Swiss mice were divided into two groups: treated with 25µg or 50µg venom. These were subdivided into three groups of six animals each, according to blood collection: 2, 4 or 24h after venom injection. Animals were anesthetized using diethyl-ether inhalation and 1ml of blood was collected by heart puncture. Then, the following organs were removed: spleen, skeletal muscle, kidneys, liver and lungs; histological sections were obtained and stained with hematoxylin-eosin (HE). The following biochemical parameters were analyzed: aspartate aminotransferase (AST/GOT),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bothrops jararacussu; Snake venoms; Sublethal doses; In vivo studies; Biochemical parameters; Histopathological alterations. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000300009 |
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| SOARES,A. M.; ANZALONI PEDROSA,L. H.; FONTES,M. R. M.; DA SILVA,R. J.; GIGLIO,J. R.. |
| Polyacrylamide gel electrophoresis (PAGE) for basic proteins may be a useful tool for the characterization of whole snake venoms and for the taxonomic classification of snakes of the Elapidae and Viperidae families. However, due to the close proximity of molecular weights among toxins bearing different net charges, sodium dodecyl sulfate (SDS) - PAGE was not able to provide an efficient differentiation. This article reports the electrophoretic analysis of several venoms from the genera Micrurus, Bothrops, Bothriopsis, Crotalus and Lachesis and shows a typical and distinctive electrophoretic profile for each species, with intraspecific and geographic variations. Even in cases in which extreme morphological similarities were present, such as between B.... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Snake venoms; Basic toxins; Polyacrylamide gel electrophoresis; Elapidae; Viperidae. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301998000200005 |
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| Menaldo,Danilo L.; Jacob-Ferreira,Anna L.; Bernardes,Carolina P.; Cintra,Adélia C. O.; Sampaio,Suely V.. |
| Background Snake venoms are complex mixtures of inorganic and organic components, mainly proteins and peptides. Standardization of methods for isolating bioactive molecules from snake venoms is extremely difficult due to the complex and highly variable composition of venoms, which can be influenced by factors such as age and geographic location of the specimen. Therefore, this study aimed to standardize a simple purification methodology for obtaining a P-I class metalloprotease (MP) and an acidic phospholipase A2 (PLA 2 ) from Bothrops atroxvenom, and biochemically characterize these molecules to enable future functional studies.Methods To obtain the toxins of interest, a method has been standardized using consecutive isolation steps. The purity level of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Snake venoms; Bothrops atrox; Toxins; Metalloprotease; Phospholipase A2; Isolation; Characterization; Chromatography. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992015000100337 |
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| Costa,Tássia R; Burin,Sandra M; Menaldo,Danilo L; Castro,Fabíola A de; Sampaio,Suely V. |
| The L-amino acid oxidases (LAAOs) constitute a major component of snake venoms and have been widely studied due to their widespread presence and various effects, such as apoptosis induction, cytotoxicity, induction and/or inhibition of platelet aggregation, hemorrhage, hemolysis, edema, as well as antimicrobial, antiparasitic and anti-HIV activities. The isolated and characterized snake venom LAAOs have become important research targets due to their potential biotechnological applications in pursuit for new drugs of interest in the scientific and medical fields. The current study discusses the antitumor effects of snake venom LAAOs described in the literature to date, highlighting the mechanisms of apoptosis induction proposed for this class of proteins. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Snake venoms; L-amino acid oxidases; Antitumor effects; Apoptosis. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992014000200206 |
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| Lomonte,Bruno; Calvete,Juan J.. |
| Abstract This work offers a general overview on the evolving strategies for the proteomic analysis of snake venoms, and discusses how these may be combined through diverse experimental approaches with the goal of achieving a more comprehensive knowledge on the compositional, toxic, and immunological characteristics of venoms. Some recent developments in this field are summarized, highlighting how strategies have evolved from the mere cataloguing of venom components (proteomics/venomics), to a broader exploration of their immunological (antivenomics) and functional (toxicovenomics) characteristics. Altogether, the combination of these complementary strategies is helping to build a wider, more integrative view of the life-threatening protein cocktails... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Snake venoms; Proteomics; Venomics; Antivenomics; Toxicovenomics. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100206 |
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| SARTORI FILHO,R.; PRESTES,N. C.; THOMAZINI,I. A.; MENDES-GIANNINI,M. J.; TOSCANO,E.; CANAVESSI,A. M. O.; BARRAVIERA,B.. |
| Sequelae due to testicular biopsy such as hemorrhage, adhesion and fibrosis may be limiting factors to the use of this surgical procedure. Fibrin glue (FG) derived from snake venom was used to minimize these sequelae, as well as to evaluate its healing property in tunica vaginalis and scrotal skin of rams. Applicability of fibrin glue derived from snake venom was tested in different tissues of other animals such as in sciatic nerve and colon of rats and skin of rabbits. In the present study, 30 healthy adult rams were used. They were divided into 3 groups of 10 animals each as follows: G1: fibrin glue group (application of fibrin glue on puncture sites and skin incisions after bilateral testicular biopsy with a Tru-Cut needle); G2: swab/nylon group... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fibrin tecidual adhesive; Snake venoms; Biopsy; Testicle; Ovine. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301998000100003 |
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| Registros recuperados: 12 | |
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