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| Registros recuperados: 63 | |
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| de Roodt,Adolfo R; Lanari,Laura C. |
| Bothrops jararacussu is one of the most venomous snakes of medical importance in South America, mainly due to the toxicity of their venom and the large amount of that which can be injected in a single bite. The venom of this snake is required for the production, process and control of the therapeutic antivenoms used to treat Bothrops envenomation, so it is one of the Bothrops species common in Serpentariums located in Argentina and Brazil dedicated to the production of antivenoms. We reported two cases of ophiophagy due captive adult B. jararacussu females on Bothrops and Philodryas snakes and the aggression of specimens of this species is also described. Despite well known resistance to homologous venom of Bothrops species, the bite of this specie on... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Ophiophagy; Natural resistance; Bite; Venom. |
| Ano: 2015 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-37432015000300004 |
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| SILVA,NATHALIA A.; ALBUQUERQUE,CLEIDE M.R.; MARINHO,ALINE D.; JORGE,ROBERTA J.B.; SILVA NETO,ANTONIO G.; MONTEIRO,HELENA S.A.; SILVA,TÚLIO D.; SILVA,MÁRCIA V.; CORREIA,MARIA TEREZA S.; PEREIRA,TICIANA P.; MARTINS,ALICE M.C.; MENEZES,DALGIMAR B.; XIMENES,RAFAEL M.; MARTINS,RENÉ D.. |
| ABSTRACT Scorpions belonging to the Tityus genus are of medical interest in Brazil. Among them, Tityus stigmurus is the main scorpion responsible for stings in the Northeast region. After a sting, the scorpion venom distributes rapidly to the organs, reaching the kidneys quickly. However, there are few studies concerning the renal pathophysiology of scorpion poisoning. In this study, we evaluated the effects of T. stigmurus venom (TsV) on renal parameters in isolated rat kidneys. Wistar rats (n = 6), weighing 250-300 g, were perfused with Krebs-Henseleit solution containing 6 g/100 mL bovine serum albumin. TsV at 0.3 and 1.0 μg/mL was tested, and the effects on perfusion pressure (PP), renal vascular resistance (RVR), urinary flow (UF), glomerular... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2D-PAGE; Kidney; MDCK; Venom; Tityus stigmurus. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000200665 |
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| Veiga,S.S.; Zanetti,V.C.; Braz,A.; Mangili,O.C.; Gremski,W.. |
| Loxoscelism, the term used to describe lesions and clinical manifestations induced by brown spider's venom (Loxosceles genus), has attracted much attention over the last years. Brown spider bites have been reported to cause a local and acute inflammatory reaction that may evolve to dermonecrosis (a hallmark of envenomation) and hemorrhage at the bite site, besides systemic manifestations such as thrombocytopenia, disseminated intravascular coagulation, hemolysis, and renal failure. The molecular mechanisms by which Loxosceles venoms induce injury are currently under investigation. In this review, we focused on the latest reports describing the biological and physiopathological aspects of loxoscelism, with reference mainly to the proteases recently... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brown spider; Venom; Extracellular matrix; Proteolytic effect. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000700002 |
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| Kamiguti,A.S.; Zuzel,M.; Theakston,R.D.G.. |
| Metalloproteinases and disintegrins are important components of most viperid and crotalid venoms. Large metalloproteinases referred to as MDC enzymes are composed of an N-terminal Metalloproteinase domain, a Disintegrin-like domain and a Cys-rich C-terminus. In contrast, disintegrins are small non-enzymatic RGD-containing cysteine-rich polypeptides. However, the disintegrin region of MDC enzymes bears a high degree of structural homology to that of the disintegrins, although it lacks the RGD motif. Despite these differences, both components share the property of being able to recognize integrin cell surface receptors and thereby to inhibit integrin-dependent cell reactions. Recently, several membrane-bound MDC enzymes, closely related to soluble venom MDC... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Venom; Metalloproteinase; Disintegrin; Platelet; Integrin; Signaling. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000700001 |
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| Prezoto,B.C.; Maffei,F.H.A.; Mattar,L.; Chudzinski-Tavassi,A.M.; Curi,P.R.. |
| The venom of Lonomia obliqua caterpillar may induce a hemorrhagic syndrome in humans, and blood incoagulability by afibrinogenemia when intravenously injected in laboratory animals. The possible antithrombotic and thrombolytic activities of L. obliqua caterpillar bristle extract (LOCBE) were evaluated in this study. The minimal intravenous dose of the extract necessary to induce afibrinogenemia and anticoagulation was 3.0 and 10.0 µg protein/kg body weight for rabbits and rats, respectively. In rabbits, this dose induced total blood incoagulability for at least 10 h and did not reduce the weight of preformed venous thrombi, in contrast to streptokinase (30,000 IU/kg). In rats, pretreatment with 5.0 and 10.0 µg/kg LOCBE prevented the formation of thrombi... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thrombosis; Fibrinolysis; Anticoagulant; Venom; Lonomia obliqua caterpillar. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000600011 |
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| SILVA,R. J. DA; FECCHIO,D.; BARRAVIERA,B.. |
| The effect of Crotalus durissus terrificus (LAURENTI, 1768) venom on the evolution of Ehrlich ascites tumor cells was evaluated. Thus, 30-day-old male mice of the Swiss strain were inoculated intraperitoneally with 1x10<img SRC="http:/img/fbpe/jvat/v3n2/image1947.gif"> tumor cells. Then, 7 groups of animals were formed: 3 control groups (physiological, venom and tumor) and 4 experimental groups that received different doses of venom. The experimental groups received 5 intraperitoneal venom injections on the 1<img SRC="http:/img/fbpe/jvat/v3n2/image1948.gif"> , 4<img SRC="http:/img/fbpe/jvat/v3n2/image1949.gif"> , 7<img SRC="http:/img/fbpe/jvat/v3n2/image1949.gif"> , 10<img SRC="http:/img/fbpe/jvat/v3n2/image1949.gif"> and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Venom; Inflammation; Tumor growth; Crotalus durissus terrificus. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301997000200008 |
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| Segura-Puertas,L.; Avila-Soria,G.; Sánchez-Rodríguez,J.; Ramos-Aguilar,M. E.; Burnett,J. W.. |
| Aurelia aurita is a scyphozoan, abundant in the Mexican Caribbean during summer. Although usually innocuous, there is evidence of it causing harm to humans. This work investigates the biological activities of crude and fractionated extracts of A. aurita. Live specimens were collected between July and September 1999 from the Mexican Caribbean. The tentacular margin was dissected immediately and frozen at -50ºC. A nematocyst suspension was prepared, discharged, and the supernatants lyophilized. Hemolytic assay was performed with lyophilized crude extract on bovine, sheep, and human red blood cells. Erythrocyte sensitivity to the toxin was ranked in descending order: human, sheep, and bovine. Toxic activity on Artemia nauplii was evaluated using the same... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aurelia aurita; Sting; Hemolytic activity; Crustacean lethality; Venom. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302002000200007 |
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| BARRAVIERA,B.; SARTORI,A.; PEREIRA DA SILVA,M. F.; KANENO,R.; PERAÇOLI,M. T. S.. |
| A sandwich-type ELISA technique for specific and sensitive detection of Crotalus durissus terrificus venom antigens, horse-antivenom, human IgG and IgM antibodies was set up. Sixteen patients, 13 males and 3 females aged between 13 to 63 years (mean 33 ± 15) bitten by Crotalus durissus terrificus snakes were studied. Of the 15 patients, 6 had previously received anti-Crotalus venom and no seric venom was detected. For the other 9 patients studied, the venom levels ranged from 2 to 108 ng/ml according to the severity of each case. Seric antivenom was detected up to 44 days after the bite. IgM human antibody levels against Crotalus venom were higher between 3 and 18 days after specific treatment. IgG human antibody levels against Crotalus venom were detected... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzyme-linked immunosorbent assay; Crotalus durissus terrificus; Venom; Antivenom; Antibodies; Cerebrospinal fluid. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000100003 |
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| SAKATE,M.; OLIVEIRA,P. C. LUCAS DE. |
| Toads (order: Anura; family: Bufonidae; genus: Bufo) are distributed throughout the world, but more species are found in areas of tropical and humid temperate climates. Although toads do not have a venom inoculation system, they are venomous animals because the glands covering the whole surface of their bodies secrete a milk-like venom of which composition is not yet completely known. Some of these glands are the bilateral glands located in post-orbital position. These glands, which are somewhat diamond-shaped and can be seen by the naked eye, are known as parotids. Toad envenoming in dogs may cause local and systemic alterations and may cause death by cardiac ventricular fibrillation. The electrocardiographic alterations observed consist of gradual... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Toad; Bufo; Venom; Dogs; Envenoming. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000100003 |
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| LIMA,P. R. M. DE; BROCHETTO-BRAGA,M. R.; CHAUD-NETTO,J.. |
| Some properties of a Africanized honeybee venom proteases were determined by enzymatic assays in solution, electrophoresis in SDS-PAGE, and gel filtration. Bee venom extracts were obtained by reservoir disruption, selective dialysis (cut off 12 kDa) to eliminate small components, such as the protease inhibitor present in the venom, and then fractionation of the dialyzed extract by gel filtration on a Sephadex G-100 column. The optimal conditions for the caseinolytic assays were pH 9.5, 2-hour digestion at 37 °C, and 1% casein concentration. The proteolytic activity was also determined by electrophoresis in SDS-PAGE with co-polymerized gelatin with three major bands of 66.0, 41.6, and 25.1 kDa. A principal serine-protease-like mechanism was revealed in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Venom; Africanized bee; Apis mellifera; Proteolytic activity; Gel filtration chromatography. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000100004 |
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| Vonorax,E. J.; Tyler,M. I.; Atkinson,R. K.; Howden,M. E. H.. |
| Australian funnel-web spiders are relatively large primitive hunting spiders. Male Atrax robustus spiders have been responsible for a number of human deaths. Venom was collected from the species Hadronyche infensa (Hickman) [female], H. formidabilis [male and female], H. versuta [female], and A. robustus (Cambridge) [male] and was fractionated by high performance liquid chromatography. This resulted in the isolation and purification of a homologous series of 7 insecticidal peptides of relatively low molecular mass (approximately 4kDa). The amino acid sequences of these toxins consisted of 36 or 37 amino acids and were named atracotoxins. For the major bioassay of these toxins, we used the cotton bollworm, Helicoverpa armigera (Hubner), due to the great... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Australian funnel-web spiders; Hadronyche and Atrax species; Venom; Insecticidal toxins; Peptides; Helicoverpa armigera. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992006000200005 |
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| Ozkan,O; Ciftci,G. |
| Mesobuthus gibbosus (Brullé, 1832) scorpions were collected from the Mugla province in the Aegean region of Turkey and housed in individual boxes. After extraction, the venom composition was analyzed using gel electrophoresis (SDS-PAGE). Interestingly, all scorpion venom samples contained only one protein band (~68 kDa) in common. Two protein bands (30 and 98 kDa) were common in six venom samples and were absent in the other venoms. Furthermore, two different protein bands (28 and 45 kDa) were detected in seven venom samples. This study proposes possible variations in the composition of individual scorpion venom samples collected from the same geographic region, based on the electrophoretic profile. Additional studies will be necessary in order to assess... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Scorpion; Mesobuthus gibbosus; Venom; Protein; Turkey. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992010000300017 |
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| Registros recuperados: 63 | |
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